Android Open Source - Torch Flashlight Widget Receiver

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License

The source code is released under:

Apache License

Java Source Code

package com.batz.guidlight;
/*w w  w.ja v  a 2 s  .c om*/
import android.appwidget.AppWidgetManager;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.widget.RemoteViews;
import android.widget.Toast;

public class FlashlightWidgetReceiver extends BroadcastReceiver {
    private static boolean isLightOn = false;
    private static Camera camera;

    @Override
    public void onReceive(Context context, Intent intent) {
            RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_demo);

            if(isLightOn) {
                    views.setImageViewResource(R.id.imageButton1, R.drawable.won);
            } else {
                    views.setImageViewResource(R.id.imageButton1, R.drawable.woff);
            }

            AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
            appWidgetManager.updateAppWidget(new ComponentName(context,     FlashlightWidgetProvider.class),
                                                                             views);

            if (isLightOn) {
                    if (camera != null) {
                            camera.stopPreview();
                            camera.release();
                            camera = null;
                            isLightOn = false;
                    }

            } else {
                    // Open the default i.e. the first rear facing camera.
                    camera = Camera.open();

                    if(camera == null) {
                            //Toast.makeText(context, R.string.no_camera, Toast.LENGTH_SHORT).show();
                    } else {
                            // Set the torch flash mode
                            Parameters param = camera.getParameters();
                            param.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
                            try {
                                    camera.setParameters(param);
                                    camera.startPreview();
                                    isLightOn = true;
                            } catch (Exception e) {
                                    //Toast.makeText(context, R.string.no_flash, Toast.LENGTH_SHORT).show();
                            }
                    }
            }
    }
}

Java Source Code List

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