一些资料

Android异常分析(转)

http://www.cnblogs.com/xiyuan2016/p/6740623.html 

Mtklog 分析(学习)

http://www.cnblogs.com/xiyuan2016/p/6740521.html

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frameworks/base/services/core/java/com/android/server/am/BroadcastQueue.java

final void processNextBroadcast(boolean fromMsg) {

在  boolean skip = false; 下边添加

final String action = r.intent.getAction();final String clsName = info.activityInfo.name;if("android.intent.action.CONFIGURATION_CHANGED".equals(action) &&        "应用类名".equals(clsName)){    skip = true;}

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去掉多用户后想让下拉单的多用户图标显示出来

/code2/lq80/frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java

protected void updateVisibilities() {    updateAlarmVisibilities();    mEmergencyOnly.setVisibility(mExpanded && mShowEmergencyCallsOnly            ? View.VISIBLE : View.INVISIBLE);    mSettingsContainer.setVisibility(mExpanded ? View.VISIBLE : View.INVISIBLE);    mSettingsContainer.findViewById(R.id.tuner_icon).setVisibility(            TunerService.isTunerEnabled(mContext) ? View.VISIBLE : View.INVISIBLE);    mMultiUserSwitch.setVisibility(mExpanded && mMultiUserSwitch.hasMultipleUsers()            ? View.VISIBLE : View.INVISIBLE);}

    mMultiUserSwitch.setVisibility(mExpanded && mMultiUserSwitch.hasMultipleUsers()            ? View.VISIBLE : View.INVISIBLE);

这句话就是控制那个多用户现实不显示的

不支持多用户后点击多用户按钮会进入添加联系人的界面

frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/phone/MultiUserSwitch.java

的onClick方法里的else里将原来的intent替换为

        Intent intent = new Intent(Intent.ACTION_INSERT);
        intent.setType("vnd.android.cursor.dir/person");
        intent.setType("vnd.android.cursor.dir/contact");
        intent.setType("vnd.android.cursor.dir/raw_contact");

就可以了。

设置里边多去掉多用户的菜单

packages/apps/Settings/AndroidManifest.xml

<activity android:name="Settings$UserSettingsActivity"

这个activity里注释掉

<meta-data android:name="com.android.settings.category"    android:value="com.android.settings.category.device" />

就可以了。这个以后解释。

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播放声音

int max = mAudioManager.getStreamMaxVolume(AudioManager.STREAM_VOICE_CALL);mAudioManager.setStreamVolume(AudioManager.STREAM_VOICE_CALL, max, 0);mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, 16, 0);setVolumeControlStream(AudioManager.STREAM_VOICE_CALL);//A: zhaopenglin for cannot play mp3 at once 20170607if (mMediaPlayer != null) {    mMediaPlayer.stop();    mMediaPlayer.release();    mMediaPlayer = null;}try {    mMediaPlayer = new MediaPlayer();    AssetFileDescriptor assetFileDescriptor = this.getResources().openRawResourceFd(R.raw.testmusic);    if (assetFileDescriptor == null) return;    mMediaPlayer.setDataSource(assetFileDescriptor.getFileDescriptor(), assetFileDescriptor.getStartOffset(),            assetFileDescriptor.getLength());    assetFileDescriptor.close();    mMediaPlayer.setAudioStreamType(AudioManager.STREAM_VOICE_CALL);    mMediaPlayer.prepare();} catch (IllegalStateException e) {    e.printStackTrace();} catch (Exception e) {    e.printStackTrace();}mMediaPlayer.setVolume(max, max);mMediaPlayer.start();mMediaPlayer.setLooping(true);

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可分屏应用调用不能分屏应用，分屏报错

frameworks/base/packages/SystemUI/src/com/android/systemui/recents/Recents.java

@Overridepublic boolean dockTopTask(int dragMode, int stackCreateMode, Rect initialBounds,        int metricsDockAction) {

…………………………

boolean screenPinningActive = ssp.isScreenPinningActive();boolean isRunningTaskInHomeStack = runningTask != null &&        SystemServicesProxy.isHomeStack(runningTask.stackId);//add startif(runningTask != null && runningTask.topActivity.getPackageName().equals("不能分屏应用的包名")) {    Toast.makeText(mContext, R.string.recents_incompatible_app_message,            Toast.LENGTH_SHORT).show();    return false;}//add end

/code1/lq80/frameworks/base/packages/SystemUI/src/com/android/systemui/recents/views/RecentsViewTouchHandler.java

public final void onBusEvent(DragStartEvent event) {

……………………

if (!event.task.isDockable        || event.task.getTopComponent().getPackageName().equals("不能分屏应用的包名")) {    EventBus.getDefault().send(new ShowIncompatibleAppOverlayEvent());} else {

public final void onBusEvent(DragEndEvent event) {

……………………

if (!mDragTask.isDockable        || mDragTask.getTopComponent().getPackageName().equals("不能分屏应用包名")) {     EventBus.getDefault().send(new HideIncompatibleAppOverlayEvent());}

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