Biometric Authentication adalah analisis authentifikasi yang sumbernya adalah data biologis seperti fingerprint jari atau iris mata. Di dalam Pass SDK terdapat beberapa proses yang dapat digunakan untuk melakukan proses identifikasi secara biometric yang datanya diambil dari fingerprint device Samsung.

Beberapa manfaat yang bisa didapatkan dengan menggunakan biometric authentication adalah:

• Meningkatkan security pada aplikasi.
• Memberikan proses user identifikasi yang lebih nyaman.

Beberapa fitur yang bisa dilakukan oleh Pass SDK adalah:

• Request fingerprint recognition.
• Cancel fingerprint recognition requests.
• Memverifikasi apakah inputan fingerprint cocok dengan fingerprint yang teregistrasi di device.
• Register fingerprint menggunakan Enroll Screen.
• Mendapatkan index dari fingerprint yang teridentifikasi.
• Mendapatkan nama atau unique id dari fingerprint yang sudah pernah diregistrasikan.
• Menset index fingerprint yang bisa di terima ketika request.
• Menambahkan title pada user interface fingerprint.
• Menambahkan logo ikon pada user interface fingerprint.
• Mengubah transparansi pada user interface fingerprint.
• Mendeteksi touch di luar interface fingerprint untuk menutup interface fingerprint.
• Broadcast action ketika terjadi perbuahan pada fingerprint yang sudah diregistrasi.
• Mendapatkan guide untuk kualitas yang tidak bagus pada saat request fingerprint.
• Set tombol pada user interface fingerprint.
• Mengubah standby string pada user interface fingerprint.

Device Support

Untuk devices yang support Biometric Authentication tentunya adalah device Samsung yang memiliki sensor dan sensor fingerprint dengan API minimal 17 Jelly Bean (Android 4.2).

Latihan

Fingerprint telah di manfaatkan oleh beberapa aplikasi yang bisa kalian temukan di Samsung Apps seperti 1Password, LastPass, PayPal, dan lain sebagainya. Kali ini kita langsung saja praktik membuat aplikasi sederhana menggunakan Samsung Pass SDK. Kelas yang akan kita gunakan untuk semua hal yang berhubungan dengan Pass SDK adalah Pass yang di dalamnya terdapat beberapa method untuk inisialisasi Pass SDK, mendapatkan Pass version number dan name, mengecek ketersediaan fitur, dll. Proses inisialisasi perlu dilakukan sekali agar kita dapat mengetahui apakah Pass SDK dapat berjalan pada device tersebut.

Langsung saja kita mulai dengan mengikuti langkah-langkah berikut:

1. Buat Project baru dan beri nama PassSample.
   Pastikan kamu telah memasukkan library Pass SDK ke dalam project kamu. Untuk instalasi Samsung SDK dan cara memasukkan library SDK terkait ke dalam project telah kita bahas di artikel sebelumnya (https://www.dicoding.com/blog/tutorial-samsung-galaxy-sdk-instalasi/)
2. Buat file dimens.xml (letaknya di res -> values), fungsi dari file dimens ini untuk mengatur default margin yang akan digunakan untuk mengatur tampilan layout selanjutnya. Kita bisa sesuaikan isinya dengan code di bawah ini:
   
   XHTML

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   <resources>     <!-- Default screen margins, per the Android Design guidelines. -->     <dimen name="activity_horizontal_margin">16dp</dimen>     <dimen name="activity_vertical_margin">16dp</dimen> </resources>

   
   
   

   Dari code di atas kita menentukan batas margin vertical dan horizontal masing-masing sebesar 16dp, nantinya kita tinggal panggil nilai dari dimen ini ke dalam tampilan layout kita.

3. Modifikasi tampilan layout main_activity.xml seperti di bawah ini :
   
   
   XHTML

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   <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:paddingBottom="@dimen/activity_vertical_margin"     android:paddingLeft="@dimen/activity_horizontal_margin"     android:paddingRight="@dimen/activity_horizontal_margin"     android:paddingTop="@dimen/activity_vertical_margin"       tools:context="com.dicoding.dhahedda.passsample.MainActivity">       <TextView         android:id="@+id/textView"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Ini adalah aplikasi rahasia"         android:textSize="24dp"         android:layout_centerHorizontal="true"/>       <Button         android:id="@+id/btn_secret"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Secret"         android:layout_centerVertical="true"         android:layout_centerHorizontal="true" />       <Button         android:id="@+id/btn_setting"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_centerHorizontal="true"         android:layout_alignParentBottom="true"         android:text="Security Setting" />   </RelativeLayout>

   Dari tampilan yang kita buat di atas, tombol “SECRET” akan di gunakan untuk berpindah ke activity lain dengan menggunakan fingerprint sebagai authentication-nya. Sedangkan tombol “SECURITY SETTING”, seperti namanya, tombol ini akan di gunakan untuk berpindah ke activity yang akan kita gunakan untuk mengatur aktivitas Pass SDK.

4. Selanjutnya buatlah Activity baru dengan nama SecretActivity. Seperti yang telah di jelaskan sebelumnya, activity ini berfungsi untuk mengecek apakah proses authentifikasi fingerprint sudah berjalan dengan benar. Pada halaman layoutnya tampilannya bisa kalian sesuaikan dengan seperti contoh tampilan di bawah ini:
   
   
   XHTML

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   <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     tools:context="com.dicoding.dhahedda.passsample.SecretActivity">       <TextView         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:textSize="24sp"         android:layout_centerHorizontal="true"         android:layout_centerVertical="true"         android:text="Finger Recognition BERHASIL !"/>   </RelativeLayout>

5. Buatlah activity baru lagi dengan nama SettingPassActivity. Activity ini nantinya akan kita gunakan sebagai UI untuk mengatur konfigurasi Fingerprint kita. Seperti biasa sesuaikan tampilan layoutnya seperti di bawah ini:
   
   
   XHTML

   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161

   <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:paddingBottom="@dimen/activity_vertical_margin"     android:paddingLeft="@dimen/activity_horizontal_margin"     android:paddingRight="@dimen/activity_horizontal_margin"     android:paddingTop="@dimen/activity_vertical_margin"     tools:context="com.dicoding.dhahedda.passsample.SettingPassActivity">       <LinearLayout         android:orientation="vertical"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:layout_alignParentTop="true"         android:layout_alignParentEnd="true">           <ScrollView             android:layout_width="match_parent"             android:layout_height="match_parent">             <LinearLayout                 android:layout_width="match_parent"                 android:layout_height="match_parent"                 android:orientation="vertical" >                 <RelativeLayout                     android:layout_width="match_parent"                     android:layout_height="match_parent"                     android:orientation="horizontal"                     android:paddingLeft="@dimen/activity_horizontal_margin"                     android:paddingRight="@dimen/activity_horizontal_margin"                     android:paddingTop="@dimen/activity_vertical_margin"                     android:paddingBottom="@dimen/activity_vertical_margin">                     <TextView                         android:layout_width="wrap_content"                         android:layout_height="wrap_content"                         android:text="Fingerprint Active"                         android:textSize="24sp"                         android:layout_alignParentLeft="true"                         android:layout_centerVertical="true"                         android:textColor="@android:color/black"/>                     <Switch                         android:layout_width="wrap_content"                         android:layout_height="wrap_content"                         android:id="@+id/switch_active"                         android:layout_centerVertical="true"                         android:layout_alignParentRight="true"                         />                 </RelativeLayout>                   <RelativeLayout                     android:layout_width="match_parent"                     android:layout_height="match_parent"                     android:paddingLeft="@dimen/activity_horizontal_margin"                     android:paddingRight="@dimen/activity_horizontal_margin"                     android:paddingTop="@dimen/activity_vertical_margin"                     android:paddingBottom="@dimen/activity_vertical_margin">                     <TextView                         android:layout_width="wrap_content"                         android:layout_height="wrap_content"                         android:text="Identify With UI"                         android:textSize="24sp"                         android:textColor="@android:color/black"                         android:layout_alignParentLeft="true"                         android:layout_centerVertical="true"                         />                     <Button                         android:layout_width="wrap_content"                         android:layout_height="wrap_content"                         android:id="@+id/btn_identify_with_ui"                         android:text="start"                         android:enabled="false"                         android:layout_alignParentTop="true"                         android:layout_alignParentEnd="true">                     </Button>                 </RelativeLayout>                   <RelativeLayout                     android:layout_width="match_parent"                     android:layout_height="match_parent"                     android:paddingLeft="@dimen/activity_horizontal_margin"                     android:paddingRight="@dimen/activity_horizontal_margin"                     android:paddingTop="@dimen/activity_vertical_margin"                     android:paddingBottom="@dimen/activity_vertical_margin">                       <TextView                         android:layout_width="wrap_content"                         android:layout_height="wrap_content"                         android:text="Identify Without UI"                         android:textSize="24sp"                         android:layout_alignParentLeft="true"                         android:layout_centerVertical="true"                         android:textColor="@android:color/black"/>                       <Button                         android:layout_width="wrap_content"                         android:layout_height="wrap_content"                         android:layout_centerVertical="true"                         android:layout_alignParentRight="true"                         android:id="@+id/btn_identify_without_ui"                         android:text="start"                         android:enabled="false">                     </Button>                 </RelativeLayout>                   <RelativeLayout                     android:layout_width="match_parent"                     android:layout_height="match_parent"                     android:paddingLeft="@dimen/activity_horizontal_margin"                     android:paddingRight="@dimen/activity_horizontal_margin"                     android:paddingTop="@dimen/activity_vertical_margin"                     android:paddingBottom="@dimen/activity_vertical_margin">                       <TextView                         android:layout_width="match_parent"                         android:layout_height="wrap_content"                         android:text="Register Finger"                         android:textSize="24sp"                         android:layout_alignParentLeft="true"                         android:layout_centerVertical="true"                         android:textColor="@android:color/black"/>                       <Button                         android:id="@+id/btn_fingerregister"                         android:layout_width="wrap_content"                         android:layout_height="wrap_content"                         android:layout_alignParentRight="true"                         android:layout_centerVertical="true"                         android:enabled="false"                         android:text="register"></Button>                 </RelativeLayout>                 <RelativeLayout                     android:layout_width="match_parent"                     android:layout_height="match_parent"                     android:paddingLeft="@dimen/activity_horizontal_margin"                     android:paddingRight="@dimen/activity_horizontal_margin"                     android:paddingTop="@dimen/activity_vertical_margin"                     android:paddingBottom="@dimen/activity_vertical_margin">                       <TextView                         android:layout_width="match_parent"                         android:layout_height="wrap_content"                         android:text="Set Intended Finger"                         android:textSize="24sp"                         android:layout_alignParentLeft="true"                         android:layout_centerVertical="true"                         android:textColor="@android:color/black"/>                       <Button                         android:layout_width="wrap_content"                         android:layout_height="wrap_content"                         android:layout_centerVertical="true"                         android:layout_alignParentRight="true"                         android:id="@+id/btn_show_intended_finger"                         android:text="select"                         android:enabled="false">                     </Button>                 </RelativeLayout>             </LinearLayout>         </ScrollView>     </LinearLayout> </RelativeLayout>

6. Sekarang buat kelas baru dan beri nama PassPreferences, sesuaikan codenya sebagai berikut:
   
   Java

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   public class PassPreferences {     private String PREFS_NAME = "PassPrefs";     private String KEY_ACTIVE = "PassActive";     private String KEY_DESIGNATED = "PassDesignated";     private SharedPreferences preferences;     private SharedPreferences.Editor editor;       private String TAG = "PREFERENCES TAG";     public PassPreferences(Context context){         preferences = context.getSharedPreferences(PREFS_NAME, Context.MODE_PRIVATE);         editor = preferences.edit();     }       public void setActive(boolean active){         editor.putBoolean(KEY_ACTIVE, active);         editor.apply();     }       public Boolean getActive(){         return preferences.getBoolean(KEY_ACTIVE, false);     }       public void setDesignated(Integer[] input){           StringBuilder str = new StringBuilder();         for (int i = 0; i < input.length; i++) {             str.append(input[i]).append(",");         }         editor.putString(KEY_DESIGNATED, str.toString());         editor.apply();     }       public Integer[] getDesignated(){           String savedString = preferences.getString(KEY_DESIGNATED, "");         Log.d(TAG, "getDesignated: saved string "+savedString);           if (savedString == "") return new Integer[0];         String[] designatedStringArr= savedString.split(",");         Integer[] designatedIntArr = new Integer[designatedStringArr.length];         Log.d(TAG, "getDesignated: "+designatedStringArr.length);         for (int i = 0 ; i < designatedStringArr.length ; i++){             designatedIntArr[i] = Integer.parseInt(designatedStringArr[i]);           }           return designatedIntArr;     } }

7. Selanjutnya kita buat satu kelas baru lagi dengan nama MyPass. Kelas ini yang nantinya akan kita gunakan untuk semua hal yang berhubungan dengan Pass SDK, bisa dibilang kelas MyPass.java ini merupakn pusat pengaturan dari aplikasi PassSample ini. Modifikasi isi codenya menjadi seperti berikut:
   
   Java

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   public class MyPass implements Handler.Callback {     private SpassFingerprint mSpassFingerprint;     private Spass mSpass;     private boolean isFeatureEnabled;       private String TAG = "Test Pass";     private Context context;     private MyPassCallback myPassCallback;     private PassPreferences passPrefs;       public boolean isFeatureEnabled_index = false;     public boolean isFeatureEnabled_custom = false;     public boolean isFeatureEnabled_uniqueId = false;     public boolean isFeatureEnabled_backupPw = false;     public boolean hasRegisteredFinger = false;         private static final int MSG_AUTH_DIALOG = 1000;     private static final int MSG_AUTH_WITHOUT_DIALOG = 1002;     private static final int MSG_REGISTER = 1003;     private static final int MSG_CANCEL = 10004;       private String MSG_BUNDLE = "msg_bundle";       private Handler mHandler;     public MyPass(Context context){         mSpass = new Spass();         this.context = context;         passPrefs = new PassPreferences(context);         mHandler = new Handler(this);       }       public void setCallback(MyPassCallback myPassCallback){         this.myPassCallback = myPassCallback;     }       public boolean initialize() throws SsdkUnsupportedException,UnsupportedOperationException{           mSpass.initialize(context);           isFeatureEnabled = mSpass.isFeatureEnabled(Spass.DEVICE_FINGERPRINT);           if(isFeatureEnabled){               mSpassFingerprint = new SpassFingerprint(context);             checkAvalailableFeatures();             checkRegistered();         } else {               return false;         }           return true;     }         private void checkAvalailableFeatures(){         isFeatureEnabled_index = mSpass.isFeatureEnabled(Spass.DEVICE_FINGERPRINT_FINGER_INDEX);         isFeatureEnabled_custom = mSpass.isFeatureEnabled(Spass.DEVICE_FINGERPRINT_CUSTOMIZED_DIALOG);         isFeatureEnabled_uniqueId = mSpass.isFeatureEnabled(Spass.DEVICE_FINGERPRINT_UNIQUE_ID);         isFeatureEnabled_backupPw = mSpass.isFeatureEnabled(Spass.DEVICE_FINGERPRINT_AVAILABLE_PASSWORD);     }       //Menyimpan kondisi aktif security di dalam shared preferences     public void setActive(boolean active){         passPrefs.setActive(active);     }       public boolean getActive(){         return passPrefs.getActive();     }       //Menyimpan data designated index di dalam shared preferences     public void setDesignatedIndex(Integer[] input){         passPrefs.setDesignated(input);     }       public Integer[] getDesignatedIndex(){         return passPrefs.getDesignated();     }       public void identifyByIndex(){           Integer[] designatedArray = getDesignatedIndex();           //Karena intendedFingerPrint dimulai dari index ke 1 maka perlu di sesuaikan pada default index 0         for(int i = 0 ; i < designatedArray.length ; i++){             designatedArray[i] = designatedArray[i] + 1;         }         ArrayList<Integer> newDesignatedArray = new ArrayList<>(Arrays.asList(designatedArray));         mSpassFingerprint.setIntendedFingerprintIndex(newDesignatedArray);     }         //Check apakah sudah ada data yang diregistrasi     public void checkRegistered() throws UnsupportedOperationException{           hasRegisteredFinger = mSpassFingerprint.hasRegisteredFinger();       }         //HANDLER REGISTER     public void handleRegisterFinger(){         mHandler.sendEmptyMessage(MSG_REGISTER);     }       //REGISTER FINGER 1003     private void registerFinger(){           mSpassFingerprint.registerFinger(context,mRegisterListener);       }       public CharSequence[] getFingerprintName() {           SparseArray<String> fingerSparse= null;           List<String> fingerList = new ArrayList<>();           fingerSparse = mSpassFingerprint.getRegisteredFingerprintName();           if (fingerSparse == null) {               Log.d(TAG, "getFingerprintName: ZERO SIZE");             return fingerList.toArray(new String[fingerList.size()]);           } else {               Log.d(TAG, "getFingerprintName: "+fingerSparse.size());               for (int i = 0; i < fingerSparse.size(); i++) {                 int index = fingerSparse.keyAt(i);                 String name = fingerSparse.get(index);                 fingerList.add(name);               }             return fingerList.toArray(new String[fingerList.size()]);         }     }       private boolean onReadyIdentify = false;     private boolean needRetryIdentify = false;           //HANDLER IDENTIFY FINGER     public void handleIdentifyWithDialog(boolean designated){           Message msg = new Message();         msg.what = MSG_AUTH_DIALOG;           Bundle bundle = new Bundle();         bundle.putBoolean(MSG_BUNDLE,designated);         msg.setData(bundle);         mHandler.sendMessage(msg);     }       //IDENTIFY FINGER 1001     private void identifyFingerWithDialog(boolean designated){           if (onReadyIdentify == false) {             onReadyIdentify = true;             try {                 if (mSpassFingerprint != null) { //                    setIdentifyIndexDialog();                       //Jika designated true maka request menyesuaikan dengan index yang diinginkan                     if(designated) {                         identifyByIndex();                     }                       mSpassFingerprint.startIdentifyWithDialog(context, mIdentifyListenerDialog, false);                 }                   //if (designatedFingersDialog != null) {                 //  log("Please identify finger to verify you with " + designatedFingersDialog.toString() + " finger");                 //} else {                 //  log("Please identify finger to verify you");                 //}             } catch (IllegalStateException e) {                 onReadyIdentify = false;                 //resetIdentifyIndexDialog();                 //log("Exception: " + e);             }         } else {             //log("The previous request is remained. Please finished or cancel first");         }       }       //HANDLER IDENTIFY FINGER WITHOUT DIALOG     public void handleIdentifyWithoutDialog(){         mHandler.sendEmptyMessage(MSG_AUTH_WITHOUT_DIALOG);     }       //IDENTIFY FINGER WITHOUT DIALOG 1002     private void identifyFingerWithoutDialog() {         Log.d(TAG, "startIdentify: "+onReadyIdentify);         if (onReadyIdentify == false) {             try {                 onReadyIdentify = true;                 if (mSpassFingerprint != null) {                     //setIdentifyIndex();                     mSpassFingerprint.startIdentify(mIdentifyListener);                 }                 /*                 if (designatedFingers != null) {                     log("Please identify finger to verify you with " + designatedFingers.toString() + " finger");                 } else {                     log("Please identify finger to verify you");                 }                 */             } catch (SpassInvalidStateException ise) {                 onReadyIdentify = false;                 //resetIdentifyIndex();                 if (ise.getType() == SpassInvalidStateException.STATUS_OPERATION_DENIED) {                     //log("Exception: " + ise.getMessage());                     Log.d(TAG, "startIdentify: "+ ise.getMessage());                 }             } catch (IllegalStateException e) {                 onReadyIdentify = false;                 //resetIdentifyIndex();                 //log("Exception: " + e);                 Log.d(TAG, "startIdentify: "+e.getMessage());             }         } else {             //log("The previous request is remained. Please finished or cancel first");         }     }           private SpassFingerprint.RegisterListener mRegisterListener = new SpassFingerprint.RegisterListener() {         @Override         public void onFinished() {               checkRegistered();             myPassCallback.onFinishedRegister(hasRegisteredFinger);         }     };         private SpassFingerprint.IdentifyListener mIdentifyListenerDialog = new SpassFingerprint.IdentifyListener() {         @Override         public void onFinished(int eventStatus) {               myPassCallback.onFinishedIdentify(eventStatus);               //log("identify finished : reason =" + getEventStatusName(eventStatus));             int FingerprintIndex = 0;             boolean isFailedIdentify = false;             onReadyIdentify = false;             try {                 FingerprintIndex = mSpassFingerprint.getIdentifiedFingerprintIndex();                 Log.d(TAG, "onFinished: "+FingerprintIndex);             } catch (IllegalStateException ise) {                 //  log(ise.getMessage());             }             if (eventStatus == SpassFingerprint.STATUS_AUTHENTIFICATION_SUCCESS) {                 //log("onFinished() : Identify authentification Success with FingerprintIndex : " + FingerprintIndex);             } else if (eventStatus == SpassFingerprint.STATUS_AUTHENTIFICATION_PASSWORD_SUCCESS) {                 //log("onFinished() : Password authentification Success");             } else if (eventStatus == SpassFingerprint.STATUS_USER_CANCELLED                     || eventStatus == SpassFingerprint.STATUS_USER_CANCELLED_BY_TOUCH_OUTSIDE) {                 // log("onFinished() : User cancel this identify.");             } else if (eventStatus == SpassFingerprint.STATUS_TIMEOUT_FAILED) {                 //log("onFinished() : The time for identify is finished.");             } else if (!mSpass.isFeatureEnabled(Spass.DEVICE_FINGERPRINT_AVAILABLE_PASSWORD)) {                 if (eventStatus == SpassFingerprint.STATUS_BUTTON_PRESSED) {                     //  log("onFinished() : User pressed the own button");                     //Toast.makeText(mContext, "Please connect own Backup Menu", Toast.LENGTH_SHORT).show();                 }             } else {                 //log("onFinished() : Authentification Fail for identify");                 isFailedIdentify = true;             }             if (!isFailedIdentify) {                 //resetIdentifyIndexDialog();             }           }           @Override         public void onReady() {             //log("identify state is ready");         }           @Override         public void onStarted() {             //log("User touched fingerprint sensor");         }           @Override         public void onCompleted() {             //log("the identify is completed");         }     };       private SpassFingerprint.IdentifyListener mIdentifyListener = new SpassFingerprint.IdentifyListener() {         @Override         public void onFinished(int eventStatus) {             //log("identify finished : reason =" + getEventStatusName(eventStatus));               myPassCallback.onFinishedIdentify(eventStatus);                 int FingerprintIndex = 0;             String FingerprintGuideText = null;             try {                 FingerprintIndex = mSpassFingerprint.getIdentifiedFingerprintIndex();             } catch (IllegalStateException ise) {                 //log(ise.getMessage());             }             if (eventStatus == SpassFingerprint.STATUS_AUTHENTIFICATION_SUCCESS) {                 //log("onFinished() : Identify authentification Success with FingerprintIndex : " + FingerprintIndex);             } else if (eventStatus == SpassFingerprint.STATUS_AUTHENTIFICATION_PASSWORD_SUCCESS) {                 //log("onFinished() : Password authentification Success");             } else if (eventStatus == SpassFingerprint.STATUS_OPERATION_DENIED) {                 //log("onFinished() : Authentification is blocked because of fingerprint service internally.");             } else if (eventStatus == SpassFingerprint.STATUS_USER_CANCELLED) {                 //log("onFinished() : User cancel this identify.");             } else if (eventStatus == SpassFingerprint.STATUS_TIMEOUT_FAILED) {                 //log("onFinished() : The time for identify is finished.");             } else if (eventStatus == SpassFingerprint.STATUS_QUALITY_FAILED) {                 //log("onFinished() : Authentification Fail for identify.");                 needRetryIdentify = true;                 FingerprintGuideText = mSpassFingerprint.getGuideForPoorQuality();                 Toast.makeText(context, FingerprintGuideText, Toast.LENGTH_SHORT).show();             } else {                 //log("onFinished() : Authentification Fail for identify");                 needRetryIdentify = true;             }             if (!needRetryIdentify) {                 //resetIdentifyIndex();             }         }           @Override         public void onReady() {             //log("identify state is ready");         }           @Override         public void onStarted() {             //log("User touched fingerprint sensor");         }           @Override         public void onCompleted() {             //log("the identify is completed");             onReadyIdentify = false;             Log.d(TAG, "onCompleted: onready "+onReadyIdentify);             Log.d(TAG, "onCompleted: need "+needRetryIdentify);               if (needRetryIdentify) {                 needRetryIdentify = false;                   mHandler.sendEmptyMessageDelayed(MSG_AUTH_WITHOUT_DIALOG, 100);             }         }     };         //HANDLER CANCEL IDENTIFY     public void handleCancelIdentify(){           mHandler.sendEmptyMessage(MSG_CANCEL);     }       //CANCEL FINGER 1004     private void cancelIdentify() {         if (onReadyIdentify == true) {             try {                 if (mSpassFingerprint != null) {                     mSpassFingerprint.cancelIdentify();                 }                 //log("cancelIdentify is called");             } catch (IllegalStateException ise) {                 //log(ise.getMessage());             }             onReadyIdentify = false;             needRetryIdentify = false;         } else {             //log("Please request Identify first");         }     }       public static String getEventStatusName(int eventStatus) {         switch (eventStatus) {             case SpassFingerprint.STATUS_AUTHENTIFICATION_SUCCESS:                 return "STATUS_AUTHENTIFICATION_SUCCESS";             case SpassFingerprint.STATUS_AUTHENTIFICATION_PASSWORD_SUCCESS:                 return "STATUS_AUTHENTIFICATION_PASSWORD_SUCCESS";             case SpassFingerprint.STATUS_TIMEOUT_FAILED:                 return "STATUS_TIMEOUT";             case SpassFingerprint.STATUS_SENSOR_FAILED:                 return "STATUS_SENSOR_ERROR";             case SpassFingerprint.STATUS_USER_CANCELLED:                 return "STATUS_USER_CANCELLED";             case SpassFingerprint.STATUS_QUALITY_FAILED:                 return "STATUS_QUALITY_FAILED";             case SpassFingerprint.STATUS_USER_CANCELLED_BY_TOUCH_OUTSIDE:                 return "STATUS_USER_CANCELLED_BY_TOUCH_OUTSIDE";             case SpassFingerprint.STATUS_BUTTON_PRESSED:                 return "STATUS_BUTTON_PRESSED";             case SpassFingerprint.STATUS_OPERATION_DENIED:                 return "STATUS_OPERATION_DENIED";             case SpassFingerprint.STATUS_AUTHENTIFICATION_FAILED:             default:                 return "STATUS_AUTHENTIFICATION_FAILED";         }     }         @Override     public boolean handleMessage(Message message) {         switch (message.what) {             case MSG_AUTH_DIALOG:                 boolean designated = message.getData().getBoolean(MSG_BUNDLE);                 identifyFingerWithDialog(designated);                 break;             case MSG_AUTH_WITHOUT_DIALOG:                 identifyFingerWithoutDialog();                 break;             case MSG_REGISTER:                 registerFinger();                 break;             case MSG_CANCEL:                 cancelIdentify();                 break;         }         return true;     } }   interface MyPassCallback{       void onFinishedIdentify(int eventStatus);     void onFinishedRegister(boolean register);   }

8. Sekarang kembali ke kelas SettingPassActivity.java, sesuaikan tampilan codenya sebagai berikut:
   
   Java

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   public class SettingPassActivity extends AppCompatActivity implements MyPassCallback, View.OnClickListener,CompoundButton.OnCheckedChangeListener  {       MyPass myPass;     Switch switchActive;     Button btnIdWithUi, btnIdWithoutUi, btnRegister , btnIntended;       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_setting_pass);           myPass = new MyPass(this);         myPass.setCallback(this);           try{               myPass.initialize();               initButton();               if (myPass.getActive()){                   switchActive.setChecked(true);                 setEnableButton();             }             }catch (SsdkUnsupportedException e){               showErrorDialog("SDK PASS",e.getMessage());             return;           }catch (UnsupportedOperationException e){               showErrorDialog("OPERATION PASS",e.getMessage());             return;         }       }         void initButton(){           switchActive = (Switch)findViewById(R.id.switch_active);         switchActive.setOnCheckedChangeListener(this);           btnIdWithUi = (Button)findViewById(R.id.btn_identify_with_ui);         btnIdWithUi.setOnClickListener(this);           btnIdWithoutUi = (Button)findViewById(R.id.btn_identify_without_ui);         btnIdWithoutUi.setOnClickListener(this);           btnRegister = (Button)findViewById(R.id.btn_fingerregister);         btnRegister.setOnClickListener(this);           btnIntended = (Button)findViewById(R.id.btn_show_intended_finger);         btnIntended.setOnClickListener(this);       }       void setEnableButton(){           if (myPass.hasRegisteredFinger) {             btnIdWithUi.setEnabled(true);             btnIdWithoutUi.setEnabled(true);             btnRegister.setEnabled(true);             btnIntended.setEnabled(true);           }       }       void setDisableButton(){         btnIdWithUi.setEnabled(false);         btnIdWithoutUi.setEnabled(false);         btnRegister.setEnabled(false);         btnIntended.setEnabled(false);     }           @Override     public void onCheckedChanged(CompoundButton compoundButton, boolean enabled) {         int id = compoundButton.getId();         switch (id){             case R.id.switch_active:                 if(enabled){                     if (myPass.hasRegisteredFinger){                         myPass.setActive(true);                         setEnableButton();                         Log.d(TAG, "onCheckedChanged: switch already registered");                     }else {                           //Change to handler                         myPass.handleRegisterFinger();                     }                 }else{                     myPass.setActive(false);                     setDisableButton();                 }                 break;             default:                 break;         }     }       private String TAG = "Setting Pass";     @Override     public void onFinishedIdentify(int eventStatus) {         Log.d(TAG, "onFinishedIdentify: "+eventStatus);         Log.d(TAG, "onFinishedIdentify: "+MyPass.getEventStatusName(eventStatus));       }       @Override     public void onFinishedRegister(boolean register) {           if(!register) {             switchActive.setChecked(false);             myPass.setActive(false);             setDisableButton();           }else{             myPass.setActive(true);             setEnableButton();         }     }       @Override     public void onClick(View view) {         int id = view.getId();           switch(id){             case R.id.btn_identify_with_ui:                   //Change to handler                 myPass.handleIdentifyWithDialog(false);                 break;             case R.id.btn_identify_without_ui:                 setDisableButton();                   //Change to handler                 myPass.handleIdentifyWithoutDialog();                 break;             case R.id.btn_fingerregister:                   //Change to handler                 myPass.handleRegisterFinger();                 break;             case R.id.btn_show_intended_finger:                 //Change to handler                 showDialogIndex();                 break;           }       }       ArrayList selectedItems = new ArrayList();       void showDialogIndex(){             CharSequence[] fingerItems = myPass.getFingerprintName();         Integer[] designatedIndex = myPass.getDesignatedIndex();           boolean[] fingerChecked = getCheckedIndex(fingerItems,designatedIndex);           selectedItems = new ArrayList<>(Arrays.asList(designatedIndex));           AlertDialog dialogIndex = new AlertDialog.Builder(SettingPassActivity.this)                 .setTitle("Select designated finger.")                 .setMultiChoiceItems(fingerItems, fingerChecked, new DialogInterface.OnMultiChoiceClickListener() {                     @Override                     public void onClick(DialogInterface dialog, int indexSelected, boolean isChecked) {                         if (isChecked) {                             // If the user checked the item, add it to the selected items                             selectedItems.add(indexSelected);                         } else if (selectedItems.contains(indexSelected)) {                             // Else, if the item is already in the array, remove it                             selectedItems.remove(Integer.valueOf(indexSelected));                         }                     }                 }).setPositiveButton("OK", new DialogInterface.OnClickListener() {                     @Override                     public void onClick(DialogInterface dialog, int id) {                         //  Your code when user clicked on OK                         //  You can write the code  to save the selected item here                           Log.d(TAG, "onClick: "+ selectedItems.toString());                         if (selectedItems.size() > 0) {                             Integer[] selectedArray = (Integer[]) selectedItems.toArray(new Integer[selectedItems.size()]);                               myPass.setDesignatedIndex(selectedArray);                         }                     }                 }).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {                     @Override                     public void onClick(DialogInterface dialog, int id) {                         //  Your code when user clicked on Cancel                     }                 }).create();           dialogIndex.show();     }       boolean[] getCheckedIndex(CharSequence[] input, Integer[] designated){           boolean[] checkedIndex = new boolean[input.length];           Arrays.fill(checkedIndex,false);           for (int i = 0  ; i < designated.length ; i++){               if (designated[i] < input.length){                 checkedIndex[designated[i]] = true;             }           }           return checkedIndex;       }       void showErrorDialog(String title,String message){           new AlertDialog.Builder(this)                 .setTitle(title)                 .setMessage(message)                 .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {                     public void onClick(DialogInterface dialog, int which) {                           SettingPassActivity.this.finish();                     }                 })                 .setIcon(android.R.drawable.ic_dialog_alert)                 .show();     } }

9. Terakhir buka kembali kelas MainActivity.java. Modifikasi code di dalamnya sedemikian rupa seperti contoh di bawah ini:
   
   Java

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   public class MainActivity extends AppCompatActivity implements MyPassCallback, View.OnClickListener{       MyPass myPass;     Button btnSetting,btnSecret;       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);           myPass = new MyPass(this);         myPass.setCallback(this);           try {               myPass.initialize();           }catch (SsdkUnsupportedException e){               showErrorDialog("SDK PASS",e.getMessage());             return;           }catch (UnsupportedOperationException e){               showErrorDialog("OPERATION PASS",e.getMessage());             return;         }           btnSecret = (Button)findViewById(R.id.btn_secret);         btnSetting = (Button)findViewById(R.id.btn_setting);           btnSecret.setOnClickListener(this);         btnSetting.setOnClickListener(this);     }       @Override     protected void onResume() {         super.onResume();     }       @Override     protected void onPause() {         super.onPause();     }           @Override     public void onClick(View view) {         int id = view.getId();         switch (id){             case R.id.btn_secret:                   if (myPass.getActive()){                       myPass.handleIdentifyWithDialog(true);                     }else{                       showErrorDialog("Fingerprint Activated","You need to activate the fingerprint security..");                 }                   break;             case R.id.btn_setting:                   Intent setting = new Intent(MainActivity.this,SettingPassActivity.class);                 MainActivity.this.startActivity(setting);                   break;         }     }       void showErrorDialog(String title,String message){           new AlertDialog.Builder(this)                 .setTitle(title)                 .setMessage(message)                 .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {                     public void onClick(DialogInterface dialog, int which) {                       }                 })                 .setIcon(android.R.drawable.ic_dialog_alert)                 .show();     }       @Override     public void onFinishedIdentify(int eventStatus) {           if (eventStatus == SpassFingerprint.STATUS_AUTHENTIFICATION_SUCCESS) {             Intent secret = new Intent(MainActivity.this, SecretActivity.class);             this.startActivity(secret);           }     }       @Override     public void onFinishedRegister(boolean register) {       } }

10. Sekarang silahkan run program.
    

    Pada demo di atas kita mencoba membuka intent pada button “SECRET” dengan menggunakan fingerprint. Yang harus kita lakukan terlebih dahulu adalah masuk ke menu “SECURITY SETTING” dan mengaktifkan fungsi fingerprint. Kita bisa melihat data fingerprint yang telah terdaftar di menu “Set Intended Finger”, di situ juga kita bisa menentukan data sidik jari mana yang akan kita pakai. Untuk mendaftarkan identitas jari yang baru, kita bisa menggunakan menu “Register Finger” kemudian ikuti petunjuk selanjutnya. Kita bisa memastikan sidik jari yang telah di buat bisa di gunakan dengan menu “Identify With UI” dan juga “Identify Without UI”, tetapi pastikan kamu sudah mengaktifkan sidik jari yang akan kamu gunakan pada menu “Set Intended Finger”. Jika sidik jari yang kamu gunakan match (sesuai) dengan sidik jari yang telah di daftarkan maka kita bisa membuka halaman “SECRET” yang ingin kita tuju sebelumnya.