Question

The application may be doing too much work on its main thread处于活动状态时，偶尔会出现此错误MainActivity ...我正在使用线程，asyncTasks和服务但仍出现错误..

这是MainActivity代码（其中包含NavigationDrawer）：

/*
* Declerations are here
*/

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    //animAlpha = AnimationUtils.loadAnimation(this, R.anim.anim_alpha);
    //animRotate = AnimationUtils.loadAnimation(this, R.anim.anim_rotate);

    i_music = new Intent(this,PlayMusicService.class);
    i_music.putExtra("action", "com.example.neotavraham.PLAY");
    startService(i_music);
    music_flag = 1;

    //background_music = MediaPlayer.create(this, R.raw.yedid_nefesh);

    flipper = (ViewFlipper) findViewById(R.id.viewFlipper);
    flipper_thread = new Flipper(flipper);
    flipper_thread.execute();

    //background_music.start();

    Thread process_buttons = new Thread(){

        @Override
        public void run(){
            messages = (ImageButton) findViewById(R.id.messages_button);
            weekly_day_times = (ImageButton) findViewById(R.id.weekly_times_button);
            shabat_times = (ImageButton) findViewById(R.id.sat_times_button);
            events = (ImageButton) findViewById(R.id.events_button);
        }
    };

    Thread process_containers = new Thread(){

        @Override
        public void run(){
            mContainerView1 = (ViewGroup) findViewById(R.id.add_shabat_container);
            mContainerView2 = (ViewGroup) findViewById(R.id.add_weekly_container);
            mContainerView3 = (ViewGroup) findViewById(R.id.add_messages_container);
            mContainerView4 = (ViewGroup) findViewById(R.id.add_events_container);
            mContainerView5 = (ViewGroup) findViewById(R.id.add_friday_night_container);
            mContainerView6 = (ViewGroup) findViewById(R.id.add_friday_morning_container);
        }
    };

    Thread process_buttons_click_listener = new Thread(){

        @Override
        public void run(){
            messages.setOnClickListener(MainActivity.this);
            weekly_day_times.setOnClickListener(MainActivity.this);
            shabat_times.setOnClickListener(MainActivity.this);
            events.setOnClickListener(MainActivity.this);
        }
    };

    Thread process_nav_click_listener = new Thread(){

        @Override
        public void run(){
            findViewById(R.id.b_shabat_add).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_weekly_add).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_messages_add).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_events_add).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_friday_night_add).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_friday_morning_add).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_shabat_delete_all).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_friday_night_delete_all).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_friday_morning_delete_all).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_weekly_delete_all).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_messages_delete_all).setOnClickListener(MainActivity.this);
            findViewById(R.id.b_events_delete_all).setOnClickListener(MainActivity.this);

            findViewById(R.id.soundToggleButton).setOnClickListener(MainActivity.this);
        }
    };


    process_buttons.start();
    process_containers.start();
    process_buttons_click_listener.start();
    process_nav_click_listener.start();

    IntializeNavDrawer();

}

 private void IntializeNavDrawer() {

    mTitle = mDrawerTitle = getTitle();
    mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);


    mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,
            GravityCompat.START);

    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setHomeButtonEnabled(true);

    mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
            null, R.string.drawer_open,
            R.string.drawer_close) {
        public void onDrawerClosed(View view) {
            getSupportActionBar().setTitle(mTitle);
            invalidateOptionsMenu(); // creates call to
            // onPrepareOptionsMenu()
        }

        public void onDrawerOpened(View drawerView) {
            getSupportActionBar().setTitle(mDrawerTitle);
            invalidateOptionsMenu(); // creates call to
            // onPrepareOptionsMenu()
        }
    };

    mDrawerLayout.setDrawerListener(mDrawerToggle);
}

/*
 *more irrelevant funcs here..
 */

这也是背景音乐的服务：

public class PlayMusicService extends Service {
public static final String ACTION_PLAY = "com.example.neotavraham.PLAY";
MediaPlayer mMediaPlayer = null;

@Override
public int onStartCommand(Intent intent, int flags, int startId) {

    if (intent.getStringExtra("action").equals(ACTION_PLAY)) {
        mMediaPlayer = MediaPlayer.create(this, R.raw.yedid_nefesh);
        mMediaPlayer.setLooping(true); // Set looping
        mMediaPlayer.start();
    }
    return flags;
}


@Override
public IBinder onBind(Intent intent) {
    return null;
}

@Override
public void onDestroy() {
    super.onDestroy();
    mMediaPlayer.stop();
    mMediaPlayer.release();
}
}

这是鳍状肢的类：

public class Flipper extends AsyncTask<String,String,String> {

private final ViewFlipper vFlipper;

public Flipper(ViewFlipper vFlipper){
    this.vFlipper = vFlipper;
}
@Override
protected String doInBackground(String... params) {
    startFlipper();
    return null;
}

private void startFlipper() {

    vFlipper.setFlipInterval(5000);
    //flipper.setInAnimation(AnimationUtils.loadAnimation(this,android.R.anim.fade_in));
    //flipper.setOutAnimation(AnimationUtils.loadAnimation(this,android.R.anim.fade_out));
    vFlipper.startFlipping();
}
}

我在我自己的手机上测试了这个代码，我的Galaxy s4，所以这不是一个慢模拟器的问题......

任何想法我应该做些什么？

Answer 1

Android Service正在UI thread上运行，所以如果你想做太多工作或使用默认情况下在工作线程上运行的IntentService，你必须创建自己的线程但它是一次做一份工作，所以它只有一个线程。如果你想拥有多个线程，你必须使用普通服务并创建自己的线程。阅读：Services

首先，像活动一样，服务中的所有工作都是在一个默认情况下是单线程 - 事实上，如果你正在运行一个活动和一个来自同一个应用程序的服务，他们使用相同的线程（“主要线程“）默认情况下。因此，服务需要处理传入快速意图并且在响应时从不执行冗长的计算给他们。如果需要任何繁重的工作或阻止呼叫，您必须这样做这些任务是异步的：要么是你实现的另一个线程你自己，或者使用框架的许多异步工具处理

Link

跳过69帧！应用程序可能在其主线程上做了太多工作

1 个答案: