android - 进度对话框 UI 卡住/缓慢

Question

我有一个进度对话框，用于我程序的一部分，我在后台执行时间密集型操作，但是当显示对话框时，UI 或微调器图标卡住/缓慢/犹豫，使程序看起来好像它卡住。在我的 AsyncTask 的 onPostExecute 中，我关闭了对话框。

既然我在后台完成所有工作，为什么会发生这种情况？

这是我的代码

pDialog = ProgressDialog.show(FullGame.this,"Starting New Game","Please Wait...", true);
new StartNewGame().execute(); 

    private class StartNewGame extends AsyncTask<Void,Void,Boolean>{

    @Override
    protected Boolean doInBackground(Void... params) {
        try{
            ContentValues values = new ContentValues();
            Cursor c = getContentResolver().query(Games.PART1_URI,new String[] {Games.PART1_NUM},
                    Games.PART1_GAME_ID+"="+gameID+" AND "+Games.PART1_FRAME_NUM+"="+10,null,null);
            c.moveToFirst();
            String num = c.getString(0);
            int part1 =0;
            if(num.equals("-")){
                part1=0;
            }else{
                part1=Integer.parseInt(num);
            }

            c = getContentResolver().query(Games.PART2_URI,new String[] {Games.PART2_NUM},
                    Games.PART2_GAME_ID+"="+gameID+" AND "+Games.PART2_FRAME_NUM+"="+10,null,null);
            c.moveToFirst();
            int part2 = 0;
            if(num.equals("-")){
                part2=0;
            }else{
                part2=Integer.parseInt(num);
            }

            c = getContentResolver().query(Games.PART3_URI,new String[] {Games.PART3_NUM},
                    Games.PART3_GAME_ID+"="+gameID,null,null);
            c.moveToFirst();
            int part3 = 0;
            if(num.equals("-")){
                part3=0;
            }else{
                part3=Integer.parseInt(num);
            }

            if(part1 == 10){
                values.clear();
                values.put(Games.STRIKES_FRAME_NUM,10);
                values.put(Games.STRIKES_BOWLER_ID,bowlerClickedID);
                values.put(Games.STRIKES_GAME_ID,gameID);
                getContentResolver().insert(Games.STRIKES_URI, values);
            }
            if(part2 == 10){
                values.clear();
                values.put(Games.STRIKES_FRAME_NUM,10);
                values.put(Games.STRIKES_BOWLER_ID,bowlerClickedID);
                values.put(Games.STRIKES_GAME_ID,gameID);
                getContentResolver().insert(Games.STRIKES_URI, values);
            }
            if(((part2+part3) == 10) && !score.checkSpare(10)){
                values.clear();
                values.put(Games.SPARES_BOWLER_ID,bowlerClickedID);
                values.put(Games.SPARES_FRAME_NUM,10);
                values.put(Games.SPARES_GAME_ID,gameID);
                getContentResolver().insert(Games.SPARES_URI, values);
            }
            if(part3 == 10){
                values.clear();
                values.put(Games.STRIKES_FRAME_NUM,10);
                values.put(Games.STRIKES_BOWLER_ID,bowlerClickedID);
                values.put(Games.STRIKES_GAME_ID,gameID);
                getContentResolver().insert(Games.STRIKES_URI, values);
            }
        c.close();
        }catch(Exception e){
            Log.d("FullGame",e.toString());
        }

        Date date = new Date(System.currentTimeMillis());
        DateFormat df = new SimpleDateFormat("MM/dd/yyyy");
        String newDate = df.format(date);

        ContentValues values = new ContentValues();
        values.put(Games.GAMES_BOWLER_ID,bowlerClickedID);
        values.put(Games.GAMES_TEAM_ID,1);
        values.put(Games.GAMES_DATE,newDate);
        values.put(Games.GAME_SEASON, pref.getLong(Preferences.SELECTED_SEASON, 1));
        values.put(Games.GAMES_TOURNAMENT_ID, tournamentID);
        Uri uri = getContentResolver().insert(Games.GAMES_URI, values);
        gameID = ContentUris.parseId(uri);
        int gameid = Integer.valueOf(String.valueOf(gameID));
        values.clear();
        Cursor cName = getContentResolver().query(BowlersDB.CONTENT_URI,new String[] {BowlersDB.FIRST_NAME},BowlersDB.ID+"="+bowlerClickedID,null,null);
        cName.moveToFirst();
        String name = cName.getString(0);
        for(int i = 0;i<10;i++){
            int num = i+1;
            values.put(Games.NAMES_FRAME_NUM,num);
            values.put(Games.NAMES_GAME_ID,gameid);
            values.put(Games.NAMES_NAME,name);
            getContentResolver().insert(Games.NAMES_URI, values);
            names(i,name);
            values.clear();
            values.put(Games.PART1_FRAME_NUM,num);
            values.put(Games.PART1_NUM,"0");
            values.put(Games.PART1_GAME_ID,gameid);
            getContentResolver().insert(Games.PART1_URI, values);
            values.clear();
            values.put(Games.PART2_FRAME_NUM,num);
            values.put(Games.PART2_NUM,"0");
            values.put(Games.PART2_GAME_ID,gameid);
            getContentResolver().insert(Games.PART2_URI, values);
            values.clear();
            values.put(Games.TOTALS_FRAME_NUM,num);
            values.put(Games.TOTALS_FRAME_TOTAL,"0");
            values.put(Games.TOTALS_GAME_ID,gameid);
            getContentResolver().insert(Games.TOTALS_URI, values);
            values.clear();
            values.put(Games.POCKETS_BOWLER_ID,bowlerClickedID);
            values.put(Games.POCKETS_FRAME_NUM,i);
            values.put(Games.POCKETS_GAME_ID,gameID);
            values.put(Games.POCKETS_TEAM_ID, teamSelectedID);
            values.put(Games.POCKETS_TOURNAMENT_ID, tournamentID);
            values.put(Games.POCKETS_NUM, 0);
            values.put(Games.POCKETS_SEASON, pref.getLong(Preferences.SELECTED_SEASON, 1));
            getContentResolver().insert(Games.POCKETS_URI, values);
            values.clear();
        }

        values.put(Games.PART3_GAME_ID,gameid);
        values.put(Games.PART3_NUM,"0");
        getContentResolver().insert(Games.PART3_URI, values);
        cName.close();
        part1Array = new int[10];
        part2Array = new int[10];
        totalsArray = new int[10];
        part3 = 0;
        mPinsUp = new ArrayList<Long>();
        mPinsUp.add((long) 1);
        mPinsUp.add((long) 2);
        mPinsUp.add((long) 3);
        mPinsUp.add((long) 4);
        mPinsUp.add((long) 5);
        mPinsUp.add((long) 6);
        mPinsUp.add((long) 7);
        mPinsUp.add((long) 8);
        mPinsUp.add((long) 9);
        mPinsUp.add((long) 10);
        return true;
    }

    protected void onPostExecute(Boolean result){
            pDialog.dismiss();
    }

}

更新:昨晚在 Debug模式下运行代码，它似乎开始在 for 循环中执行，但所有这些仍然是在一个单独的线程中完成的，我只是将值插入我的数据库

更新 2如果我注释掉 for 循环，进度对话框会显示不到一秒钟，所以即使我在 AsyncTask 中执行所有操作，插入内容仍必须在 UI 线程中运行

Answer 1

这可能是因为您的后台线程占用了 100% 的设备 CPU。当 CPU 忙于处理一个线程时，UI 线程将不会更新，因此您会看到它已卡住

尝试通过从 doInBackground 中删除部分代码并再次运行应用来检测什么是最激进的操作。还可以尝试查看当设备未通过 USB 插入时它的性能如何 - 这有时会产生奇怪的结果