am 74e2bdba: Settings: Keep SeekBarVolumizer in sync with audio stream. (3a9b632e) · Commits · e / os / android_frameworks_base

core/java/android/preference/SeekBarVolumizer.java

+77 −14

Original line number	Diff line number	Diff line
		@@ -16,7 +16,10 @@

		package android.preference;

		import android.content.BroadcastReceiver;
		import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.database.ContentObserver;
		import android.media.AudioManager;
		import android.media.Ringtone;
		@@ -45,11 +48,14 @@ public class SeekBarVolumizer implements OnSeekBarChangeListener, Handler.Callba

		private final Context mContext;
		private final Handler mHandler;
		private final H mUiHandler = new H();
		private final Callback mCallback;
		private final Uri mDefaultUri;
		private final AudioManager mAudioManager;
		private final int mStreamType;
		private final int mMaxStreamVolume;
		private final Receiver mReceiver = new Receiver();
		private final Observer mVolumeObserver;

		private int mOriginalStreamVolume;
		private Ringtone mRingtone;
		@@ -63,17 +69,6 @@ public class SeekBarVolumizer implements OnSeekBarChangeListener, Handler.Callba
		private static final int MSG_INIT_SAMPLE = 3;
		private static final int CHECK_RINGTONE_PLAYBACK_DELAY_MS = 1000;

		private ContentObserver mVolumeObserver = new ContentObserver(new Handler()) {
		@Override
		public void onChange(boolean selfChange) {
		super.onChange(selfChange);
		if (mSeekBar != null && mAudioManager != null) {
		int volume = mAudioManager.getStreamVolume(mStreamType);
		mSeekBar.setProgress(volume);
		}
		}
		};

		public SeekBarVolumizer(Context context, int streamType, Uri defaultUri,
		Callback callback) {
		mContext = context;
		@@ -85,10 +80,11 @@ public class SeekBarVolumizer implements OnSeekBarChangeListener, Handler.Callba
		mHandler = new Handler(thread.getLooper(), this);
		mCallback = callback;
		mOriginalStreamVolume = mAudioManager.getStreamVolume(mStreamType);
		mVolumeObserver = new Observer(mHandler);
		mContext.getContentResolver().registerContentObserver(
		System.getUriFor(System.VOLUME_SETTINGS[mStreamType]),
		false, mVolumeObserver);

		mReceiver.setListening(true);
		if (defaultUri == null) {
		if (mStreamType == AudioManager.STREAM_RING) {
		defaultUri = Settings.System.DEFAULT_RINGTONE_URI;
		@@ -103,6 +99,9 @@ public class SeekBarVolumizer implements OnSeekBarChangeListener, Handler.Callba
		}

		public void setSeekBar(SeekBar seekBar) {
		if (mSeekBar != null) {
		mSeekBar.setOnSeekBarChangeListener(null);
		}
		mSeekBar = seekBar;
		mSeekBar.setOnSeekBarChangeListener(null);
		mSeekBar.setMax(mMaxStreamVolume);
		@@ -150,7 +149,11 @@ public class SeekBarVolumizer implements OnSeekBarChangeListener, Handler.Callba
		mCallback.onSampleStarting(this);
		}
		if (mRingtone != null) {
		try {
		mRingtone.play();
		} catch (Throwable e) {
		Log.w(TAG, "Error playing ringtone, stream " + mStreamType, e);
		}
		}
		}
		}
		@@ -172,6 +175,8 @@ public class SeekBarVolumizer implements OnSeekBarChangeListener, Handler.Callba
		postStopSample();
		mContext.getContentResolver().unregisterContentObserver(mVolumeObserver);
		mSeekBar.setOnSeekBarChangeListener(null);
		mReceiver.setListening(false);
		mHandler.getLooper().quitSafely();
		}

		public void revertVolume() {
		@@ -252,4 +257,62 @@ public class SeekBarVolumizer implements OnSeekBarChangeListener, Handler.Callba
		postSetVolume(mLastProgress);
		}
		}

		private final class H extends Handler {
		private static final int UPDATE_SLIDER = 1;

		@Override
		public void handleMessage(Message msg) {
		if (msg.what == UPDATE_SLIDER) {
		if (mSeekBar != null) {
		mSeekBar.setProgress(msg.arg1);
		mLastProgress = mSeekBar.getProgress();
		}
		}
		}

		public void postUpdateSlider(int volume) {
		obtainMessage(UPDATE_SLIDER, volume, 0).sendToTarget();
		}
		}

		private final class Observer extends ContentObserver {
		public Observer(Handler handler) {
		super(handler);
		}

		@Override
		public void onChange(boolean selfChange) {
		super.onChange(selfChange);
		if (mSeekBar != null && mAudioManager != null) {
		final int volume = mAudioManager.getStreamVolume(mStreamType);
		mUiHandler.postUpdateSlider(volume);
		}
		}
		}

		private final class Receiver extends BroadcastReceiver {
		private boolean mListening;

		public void setListening(boolean listening) {
		if (mListening == listening) return;
		mListening = listening;
		if (listening) {
		final IntentFilter filter = new IntentFilter(AudioManager.VOLUME_CHANGED_ACTION);
		mContext.registerReceiver(this, filter);
		} else {
		mContext.unregisterReceiver(this);
		}
		}

		@Override
		public void onReceive(Context context, Intent intent) {
		if (!AudioManager.VOLUME_CHANGED_ACTION.equals(intent.getAction())) return;
		final int streamType = intent.getIntExtra(AudioManager.EXTRA_VOLUME_STREAM_TYPE, -1);
		final int streamValue = intent.getIntExtra(AudioManager.EXTRA_VOLUME_STREAM_VALUE, -1);
		if (mSeekBar != null && streamType == mStreamType && streamValue != -1) {
		mUiHandler.postUpdateSlider(streamValue);
		}
		}
		}
		}