android 错误只有创建视图层次结构的原始线程可以触及它的视图

Question

我有 class 名称 Main1，它从主 class 获取图像链接数组和文本数组，并将它们显示在 listview 上。我收到错误 "only the original thread that created a view hierarchy can touch its views" 所以我搜索解决方案我发现我使用 runOnUithread 但它只能在 oncreate 上使用所以我不知道那是解决方案。这是从 main1 class

得到的

main1 class 是

public class Main1 extends ArrayAdapter<String> {

private final Activity context;
private final String[] Cat_Name;
private final String[] logo;
public Main1(Activity context,String[] Cat_Name, String[] logo) {
super(context, R.layout.main1, Cat_Name);
this.context = context;
this.Cat_Name = Cat_Name;
this.logo = logo;
}
@Override

public View getView(final int position, View convertView, ViewGroup parent) {





    LayoutInflater inflater = context.getLayoutInflater();
    View rowView= inflater.inflate(R.layout.main1, null, true);
    TextView txtTitle = (TextView) rowView.findViewById(R.id.textView1);


    final ImageView imageView = (ImageView) rowView.findViewById(R.id.imageView1);
    txtTitle.setText(Cat_Name[position]);


    Thread thread = new Thread() {
        @Override
        public void run() {
            try {


                                    String img_url=logo[position]; //url of the image
        //      System.out.println(img_url);
                URL url = new URL(img_url);
                final Bitmap bmp; 
                bmp=BitmapFactory.decodeStream(url.openConnection().getInputStream());
                        imageView.setImageBitmap(bmp);


            } catch (MalformedURLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }


        }
    };


    thread.start();



    return rowView;

}



}

Answer 1

在 runOnUiThread 方法中设置图像，如下所示

  ((Activity) context).runOnUiThread(new Runnable() {
        @Override
        public void run() {
            imageView.setImageBitmap(bmp);
        }
    });

希望对您有所帮助。

android 错误只有创建视图层次结构的原始线程可以触及它的视图

android error only the original thread that created a view hierarchy can touch its views

android

android-listview

android-runonuithread