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我的应用程序使用 CallLog 收集数据并将其放入列表视图中。由于这需要时间，我尝试使用 progressdialog 向用户显示加载状态。不幸的是（我之前使用过progressdialog）eclipse给我一个错误：ERROR/AndroidRuntime(771): android.view.ViewRoot$CalledFromWrongThreadException: 只有创建视图层次结构的原始线程才能触摸它的视图。

    public class Calls extends Activity {
    //declaring variables
    public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.calls);

                lv1 = (ListView) findViewById(R.id.ListView01);

                pd = new ProgressDialog(Calls.this);
                pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                pd.setMessage("Loading contacts");
                pd.show();

                //Thread thread = new Thread() {  
                //public void run() {
                Calls.this.runOnUiThread(new Runnable() {

                @Override
                public void run() {

        //collecting data from CallLog, putting data into an array
    //Here comes the hard part, which is the root of the problem:


        final ArrayList<SearchResults> results = new ArrayList<SearchResults>();
             SearchResults sr1 = new SearchResults();

            for (int b=0; b<storage.length; b++)
            {
                for (int e=0; e<storage[b].length; e++)
                {
                    if (e+3 < storage[b].length)
                    {
                        arr_split_all.add(storage[b][e] + " " + storage[b][e+1] + " " + storage[b][e+2] + " " + storage[b][e+3]);
                        sr1 = new SearchResults();
                        sr1.setData1(storage[b][e+2]);
                        sr1.setData2(storage[b][e]);
                        sr1.setData3(storage[b][e+1]);
                        sr1.setData4(storage[b][e+3]);
                        sr1.setBitmap2(bitmaparray[b]);  //bitmaparray has the same size as storage, and there is no problem with this
                        results.add(sr1);
                    }
                }
            }


            lv1.setAdapter(new MyCustomBaseAdapter(Calls.this, results));  //problematic row
            handler.sendEmptyMessage(0);
            }
           };
           thread.start();
          }
    }//end of onCreate       

   private Handler handler = new Handler() {
      @Override
      public void handleMessage(Message msg) {
            pd.dismiss();
      }
  });    //ADDED a )


     }//end of class 
    //    SearchResults is another class:

            public class SearchResults extends Application{
             private String data1 = "";
             private String data2 = "";
             private String data3 = "";
             private String data4 = "";
             private String bitmap = "";
             private Bitmap bitmap2;


             public void setData1(String data1) {
              this.data1 = data1;
             }

             public String getData1() {
              return data1;
             }

            //etc...
            }

我正在使用 BaseAdapter 类将数据放入列表视图的适当位置（由一个图像视图和四个文本视图组成），但我认为现在不相关。

根据 Logcat 的说法，问题出 lv1.setAdapter(new MyCustomBaseAdapter(Calls.this, results));在行上。如果我将一个数组列表附加到列表视图，它工作正常。如果没有progressdialog，所有文本视图和列表视图每一行的图像视图都会正确加载。

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1 回答 1

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问题是您findViewById()给您的电话ListView01（以及后来的setAdapter()电话）。您不能从自定义线程修改（或访问）视图。这必须在 UI 线程上完成，通过runOnUiThread()或在 UI 线程运行的地方。

于 2011-10-08T09:15:21.800 回答