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Merge pull request #143 from unbiaseduser/flash_off_on_screen_off
Add option to turn off flash on screen off
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59 changes: 59 additions & 0 deletions
59
app/src/main/java/rocks/poopjournal/flashy/receivers/ScreenOffBroadcastReceiver.java
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package rocks.poopjournal.flashy.receivers; | ||
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import static java.util.Objects.requireNonNull; | ||
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import android.content.BroadcastReceiver; | ||
import android.content.Context; | ||
import android.content.Intent; | ||
import android.content.IntentFilter; | ||
import android.os.Build; | ||
import android.view.Display; | ||
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import androidx.annotation.RequiresApi; | ||
import androidx.core.hardware.display.DisplayManagerCompat; | ||
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import rocks.poopjournal.flashy.utils.CameraHelper; | ||
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public class ScreenOffBroadcastReceiver extends BroadcastReceiver { | ||
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private boolean isRegistered = false; | ||
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public void registerWith(Context context) { | ||
if (isRegistered) { | ||
return; | ||
} | ||
context.registerReceiver(this, new IntentFilter(Intent.ACTION_SCREEN_OFF)); | ||
isRegistered = true; | ||
} | ||
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public void unregisterWith(Context context) { | ||
if (!isRegistered) { | ||
return; | ||
} | ||
context.unregisterReceiver(this); | ||
isRegistered = false; | ||
} | ||
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@RequiresApi(api = Build.VERSION_CODES.KITKAT_WATCH) | ||
@Override | ||
public void onReceive(Context context, Intent intent) { | ||
String action = intent.getAction(); | ||
if (action == null) { | ||
return; | ||
} | ||
if (Intent.ACTION_SCREEN_OFF.equals(action) && !isScreenOn(context)) { | ||
CameraHelper helper = CameraHelper.getInstance(context); | ||
helper.turnOffAll(context); | ||
} | ||
} | ||
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/** | ||
* Checks if the screen is actually turned off because {@link Intent#ACTION_SCREEN_OFF} doesn't necessarily indicate that the screen is off. | ||
* @return true if screen is actually turned off | ||
*/ | ||
@RequiresApi(api = Build.VERSION_CODES.KITKAT_WATCH) | ||
private boolean isScreenOn(Context context) { | ||
Display display = requireNonNull(DisplayManagerCompat.getInstance(context).getDisplay(Display.DEFAULT_DISPLAY)); | ||
return display.getState() != Display.STATE_OFF; | ||
} | ||
} |
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