1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.camera; 18 19 import android.content.BroadcastReceiver; 20 import android.content.Context; 21 import android.content.Intent; 22 23 /** 24 * {@code CameraButtonIntentReceiver} is invoked when the camera button is 25 * long-pressed. 26 * 27 * It is declared in {@code AndroidManifest.xml} to receive the 28 * {@code android.intent.action.CAMERA_BUTTON} intent. 29 * 30 * After making sure we can use the camera hardware, it starts the Camera 31 * activity. 32 */ 33 public class CameraButtonIntentReceiver extends BroadcastReceiver { 34 35 @Override 36 public void onReceive(Context context, Intent intent) { 37 // Try to get the camera hardware 38 CameraHolder holder = CameraHolder.instance(); 39 ComboPreferences pref = new ComboPreferences(context); 40 int cameraId = CameraSettings.readPreferredCameraId(pref); 41 if (holder.tryOpen(null, cameraId, null) == null) { 42 return; 43 } 44 45 // We are going to launch the camera, so hold the camera for later use 46 holder.keep(); 47 holder.release(); 48 Intent i = new Intent(Intent.ACTION_MAIN); 49 i.setClass(context, CameraActivity.class); 50 i.addCategory(Intent.CATEGORY_LAUNCHER); 51 i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK 52 | Intent.FLAG_ACTIVITY_CLEAR_TOP); 53 context.startActivity(i); 54 } 55 } 56
