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获取Google Advertising ID作为唯一识别码

在Android程序中，有时候我们APP需要获取唯一识别码，来区别用户。在Android系统中提供了了AndroidId，但AndroidId有时候会为null，同时root手机用户，androidid可以改变。所以AndroidId并不能作为唯一识别码。

对于Google推荐使用Google Advertising ID，通过Google Service可以获取Google Advertising ID（如果没有Google Service就回去不到Google Advertising ID）。下面看看代码吧

AdvertisingIdClient类

public class AdvertisingIdClient {
       /**     * 这个方法是耗时的，不能在主线程调用     */    public static String getGoogleAdId(Context context) throws Exception {        if (Looper.getMainLooper() == Looper.myLooper()) {            return "Cannot call in the main thread, You must call in the other thread";        }        PackageManager pm = context.getPackageManager();        pm.getPackageInfo("com.android.vending", 0);        AdvertisingConnection connection = new AdvertisingConnection();        Intent intent = new Intent(                "com.google.android.gms.ads.identifier.service.START");        intent.setPackage("com.google.android.gms");        if (context.bindService(intent, connection, Context.BIND_AUTO_CREATE)) {            try {                AdvertisingInterface adInterface = new AdvertisingInterface(                        connection.getBinder());                return adInterface.getId();            } finally {                context.unbindService(connection);            }        }        return "";    }    private static final class AdvertisingConnection implements ServiceConnection {
           boolean retrieved = false;        private final LinkedBlockingQueue
   
     queue = new LinkedBlockingQueue<>(1);        public void onServiceConnected(ComponentName name, IBinder service) {            try {                this.queue.put(service);            } catch (InterruptedException localInterruptedException) {            }        }        public void onServiceDisconnected(ComponentName name) {        }        public IBinder getBinder() throws InterruptedException {            if (this.retrieved)                throw new IllegalStateException();            this.retrieved = true;            return this.queue.take();        }    }    private static final class AdvertisingInterface implements IInterface {
           private IBinder binder;        public AdvertisingInterface(IBinder pBinder) {            binder = pBinder;        }        public IBinder asBinder() {            return binder;        }        public String getId() throws RemoteException {            Parcel data = Parcel.obtain();            Parcel reply = Parcel.obtain();            String id;            try {                data.writeInterfaceToken("com.google.android.gms.ads.identifier.internal.IAdvertisingIdService");                binder.transact(1, data, reply, 0);                reply.readException();                id = reply.readString();            } finally {                reply.recycle();                data.recycle();            }            return id;        }        public boolean isLimitAdTrackingEnabled(boolean paramBoolean)                throws RemoteException {            Parcel data = Parcel.obtain();            Parcel reply = Parcel.obtain();            boolean limitAdTracking;            try {                data.writeInterfaceToken("com.google.android.gms.ads.identifier.internal.IAdvertisingIdService");                data.writeInt(paramBoolean ? 1 : 0);                binder.transact(2, data, reply, 0);                reply.readException();                limitAdTracking = 0 != reply.readInt();            } finally {                reply.recycle();                data.recycle();            }            return limitAdTracking;        }    }}
   

MainActivity类调用

public class MainActivity extends AppCompatActivity {
       @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Executors.newSingleThreadExecutor().execute(new Runnable() {            @Override            public void run() {                try {                    String adid = AdvertisingIdClient.getGoogleAdId(getApplicationContext());                    Log.e("MainActivity", "adid:  " + adid);                } catch (Exception e) {                    e.printStackTrace();                }            }        });    }}

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