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我正在尝试加载一个包含 3 个片段的活动。对于每个片段，我使用 Asynctask，并在每个片段的 onPostExecute() 方法上加载 Ui 元素。问题是，当我在 Asynctask 加载 ui 元素时从片段滑动到片段时，应用程序真的很慢。我试图通过调用 onUiThread() 来解决这个问题，它稍微降低了速度。Asynctasks 用于片段的 onCreateView 方法。

我能做些什么来摆脱这种滞后？

这是一个 Asynctask ：

public class MovieCommentsAsynctask extends AsyncTask<String, Void, String> {
private String TAG = "MovieCommentsAsynctask";
private Context context;
private boolean test;
private HttpClient client;
private List<MovieCommentsObject> comments;
private LayoutInflater inflater;
private Activity activity;
//
private RelativeLayout rl;
private ProgressBar pb;
private PullToRefreshScrollView sv;
private LinearLayout ll;
private Button btn;

public MovieCommentsAsynctask(Context context, RelativeLayout rl,
        boolean test, Activity activity) {
    this.context = context;
    this.activity = activity;
    this.rl = rl;
    this.test = test;
    client = new DefaultHttpClient();
    bind();
    inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}

private void bind() {
    ll = (LinearLayout) rl.findViewById(R.id.ll_fragment_movie_comments);
    sv = (PullToRefreshScrollView) rl
            .findViewById(R.id.sv_fragment_movie_comments);
    pb = (ProgressBar) rl.findViewById(R.id.pb_fragment_movie_comments);
    btn = (Button) rl.findViewById(R.id.btn_fragment_movie_comments_add);

}

@Override
protected void onPreExecute() {
    super.onPreExecute();
    Log.i(TAG, "onPreExecute");
    if (test) {
        pb.setVisibility(View.VISIBLE);
    } else {

    }
}

@Override
protected String doInBackground(String... params) {
    Log.i(TAG, "doInBackground");
    String url = params[0];
    BasicResponseHandler handler = new BasicResponseHandler();
    HttpGet get = new HttpGet(url);
    try {
        return client.execute(get, handler);
    } catch (ClientProtocolException e) {
        e.printStackTrace();
        return null;
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

@Override
protected void onPostExecute(String result) {
    super.onPostExecute(result);
    Log.i(TAG, "onPostExecute");
    pb.setVisibility(View.GONE);
    if (result != null && result.startsWith("[")) {
        Log.i(TAG, "restult = " + result);
        Gson gson = new Gson();
        Type type = new TypeToken<List<MovieCommentsObject>>() {
        }.getType();
        comments = gson.fromJson(result, type);
        init();
    }
}

private void init() {
    for (int i = 0; i < comments.size(); i++) {
        MovieCommentsObject comment = comments.get(i);
        addComment(comment);
    }
    ll.setVisibility(View.VISIBLE);
}

private void addComment(final MovieCommentsObject comment) {

    activity.runOnUiThread(new Runnable() {

        @Override
        public void run() {
            final View v = inflater.inflate(R.layout.adapter_movie_comments, null);
            SmartImageView siv = (SmartImageView) v
                    .findViewById(R.id.siv_adapter_movie_comments);
            WebView wv_user = (WebView) v
                    .findViewById(R.id.wv_adapter_movie_comments_user);
            WebView wv_date = (WebView) v
                    .findViewById(R.id.wv_adapter_movie_comments_date);

            WebView wv_text = (WebView) v
                    .findViewById(R.id.wv_adapter_movie_comments_text);
            TextView tv_type = (TextView) v.findViewById(R.id.tv_adapter_movie_comments_type);
            wv_text.setOnTouchListener(new View.OnTouchListener() {

                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    return true;
                }
            });
            wv_user.setOnTouchListener(new View.OnTouchListener() {

                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    return true;
                }
            });
            wv_date.setOnTouchListener(new View.OnTouchListener() {

                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    return true;
                }
            });

            long date = comment.getInserted();
            if (date > 0) {
                FunctionsGeneral.justify(wv_date, FunctionsGeneral.getTime(date));
            }
            FunctionsGeneral.justify(wv_user, comment.getUser().getUsername());
            FunctionsGeneral.justify(wv_text, comment.getText_html());
            String image = comment.getUser().getAvatar();
            if (image != null && image.trim().length() > 0) {
                siv.setImageUrl(image);
            }
            if(comment.getType() != null){
                tv_type.setText(comment.getType());
            }
            final LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                    LinearLayout.LayoutParams.FILL_PARENT,
                    LinearLayout.LayoutParams.WRAP_CONTENT);
            params.bottomMargin = 10;
            ll.addView(v, params);
        }
    });

}

}
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