Android 添加充拔电提示音
原生充电提示音
问题：在设置中有充电提示音的打开选项，但打开后，插上充电线也是听不到充电音
实际情况：需要无线充电的时候才会发出声音
PowerManagerService.java中插拔充电线会执行updateIsPoweredLocked()
private void updateIsPoweredLocked(int dirty) {
......
// Update wireless dock detection state.
final boolean dockedOnWirelessCharger = mWirelessChargerDetector.update(
mIsPowered, mPlugType, mBatteryLevel);
......
// Tell the notifier whether wireless charging has started so that
// it can provide feedback to the user.
if (dockedOnWirelessCharger) {
mNotifier.onWirelessChargingStarted();
}
......
}
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接着如果dockedOnWirelessCharger的值为true调用playWirelessChargingStartedSound 播放充电提示音
frameworks/base/services/core/java/com/android/server/power/Notifier.java
/**
* Called when wireless charging has started so as to provide user feedback.
*/
public void onWirelessChargingStarted() {
if (DEBUG) {
Slog.d(TAG, "onWirelessChargingStarted");
}
mSuspendBlocker.acquire();
Message msg = mHandler.obtainMessage(MSG_WIRELESS_CHARGING_STARTED);
msg.setAsynchronous(true);
mHandler.sendMessage(msg);
}
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查看android/frameworks/base/services/core/java/com/android/server/power/WirelessChargerDetector.java的update方法，发现只有无线充电的情况下才有充电提示音。
注：如果要有线也有提示音可以将onWirelessChargingStarted的条件去掉，但是这样插入充电播放提示音，拔掉充电线也会有提示音。
添加有线连接充电的提示音
原生的播放方式
android/frameworks/base/services/core/java/com/android/server/power/Notifier.java
private void playWirelessChargingStartedSound() {
701 final boolean enabled = Settings.Global.getInt(mContext.getContentResolver(),
702 Settings.Global.CHARGING_SOUNDS_ENABLED, 1) != 0;
703 final String soundPath = Settings.Global.getString(mContext.getContentResolver(),
704 Settings.Global.WIRELESS_CHARGING_STARTED_SOUND);
705 if (enabled && soundPath != null) {
706 final Uri soundUri = Uri.parse("file://" + soundPath);
707 if (soundUri != null) {
708 final Ringtone sfx = RingtoneManager.getRingtone(mContext, soundUri);
709 if (sfx != null) {
710 sfx.setStreamType(AudioManager.STREAM_SYSTEM);
711 sfx.play();
712 }
713 }
714 }
715
716 mSuspendBlocker.release();
717 }
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添加方式一：在NotificationManagerService中通过接收广播播放提示音
接收：Intent.ACTION_POWER_CONNECTED
android/frameworks/base/services/core/java/com/android/server/notification/NotificationManagerService.java
在onStart()中注册广播
@Override
1340 public void onStart() {
......
// register for various Intents
1371 IntentFilter filter = new IntentFilter();
1372 filter.addAction(Intent.ACTION_SCREEN_ON);
1373 filter.addAction(Intent.ACTION_SCREEN_OFF);
1374 filter.addAction(TelephonyManager.ACTION_PHONE_STATE_CHANGED);
1375 filter.addAction(Intent.ACTION_USER_PRESENT);
1376 filter.addAction(Intent.ACTION_USER_STOPPED);
1377 filter.addAction(Intent.ACTION_USER_SWITCHED);
filter.addAction(Intent.ACTION_POWER_CONNECTED);//添加Intent Action
......
getContext().registerReceiver(mIntentReceiver, filter);
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接收广播播放提示音
private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
......
}else if (action.equals(Intent.ACTION_POWER_CONNECTED)){
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/audio/ui/WirelessChargingStarted.ogg");
if (soundUri != null) {
final Ringtone sfx = RingtoneManager.getRingtone(getContext(), soundUri);
if (sfx != null) {
sfx.setStreamType(AudioManager.STREAM_SYSTEM);
sfx.play();
}
}
}
}
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添加方式二：通过BatteryController接收广播播放提示音
接收：Intent.ACTION_POWER_CONNECTED
android/frameworks/base/services/core/java/com/android/server/job/controllers/BatteryController.java
在startTracking()中注册广播
public void startTracking() {
IntentFilter filter = new IntentFilter();
// Battery health.
filter.addAction(Intent.ACTION_BATTERY_LOW);
filter.addAction(Intent.ACTION_BATTERY_OKAY);
// Charging/not charging.
filter.addAction(BatteryManager.ACTION_CHARGING);
filter.addAction(BatteryManager.ACTION_DISCHARGING);
filter.addAction(Intent.ACTION_POWER_CONNECTED);
mContext.registerReceiver(this, filter);
......
}添加音频文件
路径： /frameworks/base/data/sounds/AudioPackageGo.mk
PRODUCT_COPY_FILES += \
$(LOCAL_PATH)/notifications/ogg/Alya.ogg:system/media/audio/notifications/Alya.ogg \
$(LOCAL_PATH)/notifications/ogg/Argon.ogg:system/media/audio/notifications/Argon.ogg \
$(LOCAL_PATH)/notifications/Canopus.ogg:system/media/audio/notifications/Canopus.ogg \
$(LOCAL_PATH)/effects/ogg/LowBattery.ogg:system/media/audio/ui/LowBattery.ogg \
+ $(LOCAL_PATH)/effects/ogg/WirelessChargingStarted.ogg:system/media/audio/ui/WirelessChargingStarted.ogg \