Android 插拔充电器增加声音

修改方法如下：
需要修改的文件路径如下
frameworks/base/services/core/java/com/android/server/notification/NotificationManagerService.java。
在这个类中的如下代码增加修改：

 private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            String action = intent.getAction();              //省略若干 ........           //通过增加对如下广播的监听，实现需要的效果。注意增加广播的注册            else if (action.equals(Intent.ACTION_POWER_CONNECTED) || action.equals(Intent.ACTION_POWER_DISCONNECTED)){              android.util.Log.d("fxjsound","charging sounds");            final boolean enabled = Settings.Global.getInt(getContext().getContentResolver(),                            Settings.Global.CHARGING_SOUNDS_ENABLED, 1) != 0;                 if (enabled) {                     final Uri soundUri = Uri.parse("file://" + "/system/media/ChargingStartOrEnd.ogg");                     if (soundUri != null) {                         final Ringtone sfx = RingtoneManager.getRingtone(getContext(), soundUri);                         if (sfx != null) {                             sfx.setStreamType(AudioManager.STREAM_SYSTEM);                             sfx.play();                         }                     }                }            }            // end        }    };

广播的具体含义如下。

  /**     * Broadcast Action:  External power has been connected to the device.     * This is intended for applications that wish to register specifically to this notification.     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to     * stay active to receive this notification.  This action can be used to implement actions     * that wait until power is available to trigger.     *     * This is a protected intent that can only be sent     * by the system.     */  //直观意思就是充电器连上  // public static final String ACTION_POWER_CONNECTED = "android.intent.action.ACTION_POWER_CONNECTED";    /**     * Broadcast Action:  External power has been removed from the device.     * This is intended for applications that wish to register specifically to this notification.     * Unlike ACTION_BATTERY_CHANGED, applications will be woken for this and so do not have to     * stay active to receive this notification.  This action can be used to implement actions     * that wait until power is available to trigger.     *     * This is a protected intent that can only be sent     * by the system.     */  //直观意思就是充电器断开 //  public static final String ACTION_POWER_DISCONNECTED = "android.intent.action.ACTION_POWER_DISCONNECTED";

除了上面这中广播之外，还可以监听android.hardware.usb.action.USB_STATE这个广播，也可以达到类似的效果。。

更多精彩文章，请关注如下二维码对应公众号“代码视觉”。转载请联系授权！

代码视觉

更多相关文章

随机推荐