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copied!<p>For me those methods didn't work. So I used other scenario (not trivial) to make my screen off.</p> <p>Android has 2 flags that responsible to be awake: </p> <ul> <li>Display --> Screen TimeOut </li> <li>Application --> Development --> <em>Stay awake while charging</em> check box.</li> </ul> <p>I used followed flow:</p> <ol> <li><p>1st of all save your previous configuration, for example screen timeout was 1 min and <em>Stay awake while charging</em> checked.</p></li> <li><p>After, I uncheck <em>Stay awake while charging</em> and set screen timeout to minimal time.</p></li> <li><p>I register to broadcast receiver service to get event from android that screen turned off.</p></li> <li><p>When I got event on screen off, I set previous configuration to default: screen timeout was 1 min and <em>Stay awake while charging</em> checked.</p></li> <li><p>Unregister receiver</p></li> </ol> <p>After 15 sec. device sleeps</p> <p>Here is snippets of code:</p> <p><strong>BroadcastReceiver</strong></p> <pre><code>import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; /** * Catch Screen On/Off * */ public class BroadcastReceiverScreenListener extends BroadcastReceiver{ private BroadCastListenerCallBackItf mBroadCastListenerCallBack = null; public BroadcastReceiverScreenListener( BroadCastListenerCallBackItf broadCastListenerCallBack) { this.mBroadCastListenerCallBack = broadCastListenerCallBack; } @Override public void onReceive(Context arg0, Intent intent) { if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) { mBroadCastListenerCallBack.broadCastListenerCallBack__ScreenOff_onResponse(); } } } </code></pre> <p><strong>Interface used as callback</strong></p> <pre><code>public interface BroadCastListenerCallBackItf { public void broadCastListenerCallBack__ScreenOff_onResponse(); } </code></pre> <p><strong>2 methods from main class:</strong></p> <pre><code>.... AndroidSynchronize mSync = new AndroidSynchronize(); .... public void turnScreenOff(int wait){ IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON); filter.addAction(Intent.ACTION_SCREEN_OFF); BroadCastListenerCallBackItf broadCastListenerCallBack = this; BroadcastReceiver mReceiver = new BroadcastReceiverScreenListener(broadCastListenerCallBack); m_context.registerReceiver(mReceiver, filter); //set Development --> disable STAY_ON_WHILE_PLUGGED_IN Settings.System.putInt( m_context.getContentResolver(), Settings.System.STAY_ON_WHILE_PLUGGED_IN, 0 ); // take current screen off time int defTimeOut = Settings.System.getInt(m_context.getContentResolver(), Settings.System.SCREEN_OFF_TIMEOUT, 3000); // set 15 sec Settings.System.putInt(m_context.getContentResolver(), Settings.System.SCREEN_OFF_TIMEOUT, 15000); // wait 200 sec till get response from BroadcastReceiver on Screen Off mSync.doWait(wait*1000); // set previous settings Settings.System.putInt(m_context.getContentResolver(), Settings.System.SCREEN_OFF_TIMEOUT, defTimeOut); // switch back previous state Settings.System.putInt( m_context.getContentResolver(), Settings.System.STAY_ON_WHILE_PLUGGED_IN, BatteryManager.BATTERY_PLUGGED_USB); m_context.unregisterReceiver(mReceiver); } public void broadCastListenerCallBack__ScreenOff_onResponse() { mSync.doNotify(); } .... </code></pre> <p><strong>AndroidSynchronize class</strong></p> <pre><code>public class AndroidSynchronize { public void doWait(long l){ synchronized(this){ try { this.wait(l); } catch(InterruptedException e) { } } } public void doNotify() { synchronized(this) { this.notify(); } } public void doWait() { synchronized(this){ try { this.wait(); } catch(InterruptedException e) { } } } } </code></pre> <p><strong>[EDIT]</strong></p> <p>You need to register permission:</p> <pre><code>android.permission.WRITE_SETTINGS </code></pre>

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