runOnUiThread的片段 [英] runOnUiThread in fragment

问题描述

我想要一个活动转换为片段。在 runOnUiThread 错误标记。 在过去的：

I'm trying to convert an Activity to fragment. The error mark on runOnUiThread. on the past:

GoogleActivityV2从活动延伸。 runOnUiThread类   ExecuteTask。嵌套的活动类ExecuteTask。

GoogleActivityV2 extends from Activity. runOnUiThread in class ExecuteTask. class ExecuteTask nested on activity.

（运行正常） 现在：

GoogleActivityV2从片段延伸。 runOnUiThread类   ExecuteTask。嵌套的活动类ExecuteTask。 （上的错误   runOnUiThread）

GoogleActivityV2 extends from Fragment. runOnUiThread in class ExecuteTask. class ExecuteTask nested on activity. (Error on runOnUiThread)

这是我的code

public class GoogleActivityV2 extends SherlockMapFragment implements OnMapClickListener , OnMapLongClickListener , OnCameraChangeListener , TextWatcher {


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        View rootView = inflater.inflate(R.layout.activity_googlev2, container, false);
        Init();
        adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_dropdown_item_1line);
        textView = (AutoCompleteTextView) getView().findViewById(R.id.autoCompleteTextView1);
        return rootView;
    }

    public void onCameraChange(CameraPosition arg0){
        // TODO Auto-generated method stub
    }

    public void onMapLongClick(LatLng arg0){
        llLoc = arg0;
        stCommand = "onTouchEvent";
        lp = new ExecuteTask();
        lp.execute();
    }

    public void onMapClick(LatLng arg0){
        // TODO Auto-generated method stub
    }

    class ExecuteTask extends AsyncTask<String, String, String> {
        @Override
        protected void onPreExecute(){
            super.onPreExecute();
            if(stCommand.compareTo("AutoCompleteTextView") != 0) {
                pDialog = new ProgressDialog(getActivity());
                pDialog.setMessage(Html.fromHtml("<b>Search</b><br/>Loading ..."));
                pDialog.setIndeterminate(false);
                pDialog.setCancelable(false);
                pDialog.show();
            }
        }

        protected String doInBackground(String ... args){
            do something
            return null;
        }

        @Override
        protected void onPostExecute(String file_url){
            if(stCommand.compareTo("AutoCompleteTextView") != 0) pDialog.dismiss();
            runOnUiThread(new Runnable() {
                public void run(){
                    do something
                }
            });
        }
    }
    public void afterTextChanged(Editable s){
        // TODO Auto-generated method stub
    }

    public void beforeTextChanged(CharSequence s, int start, int count, int after){
        // TODO Auto-generated method stub
    }

    public void onTextChanged(CharSequence s, int start, int before, int count){
        // TODO Auto-generated method stub
    }
}

错误说：

the error says:

我该如何解决这个问题？

how can I fix this error?

推荐答案

试试这个： getActivity（）runOnUiThread（新的Runnable ...

这是因为：

1）隐这在调用 runOnUiThread 是指AsyncTask的，不是你的片段。

1) the implicit this in your call to runOnUiThread is referring to AsyncTask, not your fragment.

2）片段没有runOnUiThread

2) Fragment doesn't have runOnUiThread

（<一href="http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/4.2.2_r1/android/app/Fragment.java?av=f">http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/4.2.2_r1/android/app/Fragment.java?av=f)

然而活动作用：

（<一href="http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/4.2.2_r1/android/app/Activity.java?av=f">http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/4.2.2_r1/android/app/Activity.java?av=f)

请注意，这只是执行的Runnable 如果您已经在主线程，并使用处理程序如果你不是在主线程。您可以在片段实施处理程序如果你不想担心这，它实际上上下文非常简单：

Note that this just executes the Runnable if you're already on the main thread, and uses a Handler if you aren't on the main thread. You can implement a Handler in your fragment if you don't want to worry about the context of this, it's actually very easy:

<一个href="http://developer.android.com/reference/android/os/Handler.html">http://developer.android.com/reference/android/os/Handler.html

编辑：@rciovati是对的，你是在 onPostExecute ，这是已经在主线程

@rciovati is right, you are in onPostExecute, that's already on the main thread.

这篇关于runOnUiThread的片段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！