Created
December 27, 2016 14:33
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import android.content.ComponentName; | |
import android.content.Context; | |
import android.content.Intent; | |
import android.content.ServiceConnection; | |
import android.os.IBinder; | |
import java.util.concurrent.CountDownLatch; | |
public class ServiceConnector<T> { | |
private static final String TAG = ServiceConnector.class.getSimpleName(); | |
private T service; | |
CountDownLatch latch = new CountDownLatch(0); | |
private ServiceConnection serviceConnection = new ServiceConnection() { | |
@Override | |
public void onServiceConnected(ComponentName name, IBinder service) { | |
LOG.d(TAG + ".onServiceConnected for " + serviceIntent); | |
ServiceConnector.this.service = serviceFactory.call(service); | |
latch.countDown(); | |
} | |
@Override | |
public void onServiceDisconnected(ComponentName name) { | |
LOG.d(TAG + ".onServiceDisconnected for " + serviceIntent); | |
latch.countDown(); | |
ServiceConnector.this.service = null; | |
} | |
}; | |
private Intent serviceIntent; | |
private Func1<IBinder, T> serviceFactory; | |
public ServiceConnector(Intent serviceIntent, Func1<IBinder, T> serviceFactory) { | |
this.serviceIntent = serviceIntent; | |
this.serviceFactory = serviceFactory; | |
} | |
/** | |
* This is blocking call!!! | |
* <p/> | |
* Should only be called from background thread. | |
* | |
* @return service | |
*/ | |
public T getService(Context context) { | |
if (service == null) { | |
try { | |
latch = new CountDownLatch(1); | |
LOG.d(TAG + ".onCreate bind service " + serviceConnection); | |
context.bindService(serviceIntent, serviceConnection, Context.BIND_AUTO_CREATE); | |
latch.await(); | |
} catch (InterruptedException e) { | |
LOG.e(TAG + ".getService() - interrupted error"); | |
} | |
} | |
return service; | |
} | |
public void unbindService(Context context) { | |
context.unbindService(serviceConnection); | |
} | |
} |
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