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Merge change 22521 into eclair

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* changes:
  Revert volume if it wasn't okayed by user.
This commit is contained in:
Android (Google) Code Review
2009-08-25 10:23:29 -07:00
parent 678771b811 9b4742cf25
commit 91ba1c3f9d
1 changed files with 106 additions and 12 deletions
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118
core/java/android/preference/VolumePreference.java
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@@ -16,15 +16,17 @@
package android.preference;
import android.app.Dialog;
import android.content.Context;
import android.content.res.TypedArray;
import android.database.ContentObserver;
import android.media.AudioManager;
import android.media.Ringtone;
import android.media.RingtoneManager;
import android.media.AudioManager;
import android.net.Uri;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.os.Parcel;
import android.os.Parcelable;
import android.provider.Settings;
import android.provider.Settings.System;
import android.util.AttributeSet;
@@ -42,7 +44,7 @@ public class VolumePreference extends SeekBarPreference implements
private static final String TAG = "VolumePreference";
private int mStreamType;
/** May be null if the dialog isn't visible. */
private SeekBarVolumizer mSeekBarVolumizer;
@@ -54,7 +56,7 @@ public class VolumePreference extends SeekBarPreference implements
mStreamType = a.getInt(android.R.styleable.VolumePreference_streamType, 0);
a.recycle();
}
public void setStreamType(int streamType) {
mStreamType = streamType;
}
@@ -65,7 +67,7 @@ public class VolumePreference extends SeekBarPreference implements
final SeekBar seekBar = (SeekBar) view.findViewById(com.android.internal.R.id.seekbar);
mSeekBarVolumizer = new SeekBarVolumizer(getContext(), seekBar, mStreamType);
getPreferenceManager().registerOnActivityStopListener(this);
// grab focus and key events so that pressing the volume buttons in the
@@ -100,7 +102,7 @@ public class VolumePreference extends SeekBarPreference implements
if (!positiveResult && mSeekBarVolumizer != null) {
mSeekBarVolumizer.revertVolume();
}
cleanup();
}
@@ -113,19 +115,96 @@ public class VolumePreference extends SeekBarPreference implements
*/
private void cleanup() {
getPreferenceManager().unregisterOnActivityStopListener(this);
if (mSeekBarVolumizer != null) {
Dialog dialog = getDialog();
if (dialog != null && dialog.isShowing()) {
// Stopped while dialog was showing, revert changes
mSeekBarVolumizer.revertVolume();
}
mSeekBarVolumizer.stop();
mSeekBarVolumizer = null;
}
}
protected void onSampleStarting(SeekBarVolumizer volumizer) {
if (mSeekBarVolumizer != null && volumizer != mSeekBarVolumizer) {
mSeekBarVolumizer.stopSample();
}
}
@Override
protected Parcelable onSaveInstanceState() {
final Parcelable superState = super.onSaveInstanceState();
if (isPersistent()) {
// No need to save instance state since it's persistent
return superState;
}
final SavedState myState = new SavedState(superState);
if (mSeekBarVolumizer != null) {
mSeekBarVolumizer.onSaveInstanceState(myState.getVolumeStore());
}
return myState;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
if (state == null || !state.getClass().equals(SavedState.class)) {
// Didn't save state for us in onSaveInstanceState
super.onRestoreInstanceState(state);
return;
}
SavedState myState = (SavedState) state;
super.onRestoreInstanceState(myState.getSuperState());
if (mSeekBarVolumizer != null) {
mSeekBarVolumizer.onRestoreInstanceState(myState.getVolumeStore());
}
}
public static class VolumeStore {
public int volume = -1;
public int originalVolume = -1;
}
private static class SavedState extends BaseSavedState {
VolumeStore mVolumeStore = new VolumeStore();
public SavedState(Parcel source) {
super(source);
mVolumeStore.volume = source.readInt();
mVolumeStore.originalVolume = source.readInt();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
super.writeToParcel(dest, flags);
dest.writeInt(mVolumeStore.volume);
dest.writeInt(mVolumeStore.originalVolume);
}
VolumeStore getVolumeStore() {
return mVolumeStore;
}
public SavedState(Parcelable superState) {
super(superState);
}
public static final Parcelable.Creator<SavedState> CREATOR =
new Parcelable.Creator<SavedState>() {
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
/**
* Turns a {@link SeekBar} into a volume control.
*/
@@ -139,7 +218,7 @@ public class VolumePreference extends SeekBarPreference implements
private int mOriginalStreamVolume;
private Ringtone mRingtone;
private int mLastProgress;
private int mLastProgress = -1;
private SeekBar mSeekBar;
private ContentObserver mVolumeObserver = new ContentObserver(mHandler) {
@@ -153,7 +232,7 @@ public class VolumePreference extends SeekBarPreference implements
}
}
};
public SeekBarVolumizer(Context context, SeekBar seekBar, int streamType) {
mContext = context;
mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
@@ -207,7 +286,7 @@ public class VolumePreference extends SeekBarPreference implements
postSetVolume(progress);
}
private void postSetVolume(int progress) {
void postSetVolume(int progress) {
// Do the volume changing separately to give responsive UI
mLastProgress = progress;
mHandler.removeCallbacks(this);
@@ -249,5 +328,20 @@ public class VolumePreference extends SeekBarPreference implements
}
postSetVolume(mSeekBar.getProgress());
}
public void onSaveInstanceState(VolumeStore volumeStore) {
if (mLastProgress >= 0) {
volumeStore.volume = mLastProgress;
volumeStore.originalVolume = mOriginalStreamVolume;
}
}
public void onRestoreInstanceState(VolumeStore volumeStore) {
if (volumeStore.volume != -1) {
mOriginalStreamVolume = volumeStore.originalVolume;
mLastProgress = volumeStore.volume;
postSetVolume(mLastProgress);
}
}
}
}