Question

我正在尝试在imageview上显示facebook和google plus个人资料图片。

为此我尝试了一些像......

URL img_value = null;
                img_value = new URL("http://graph.facebook.com/"+ userProfileID +"/picture?type=square");
                Bitmap mIcon1 = BitmapFactory.decodeStream(img_value.openConnection().getInputStream());
                user_picture.setImageBitmap(mIcon1);

这项工作在较低版本中很有用，但在较高版本中却没有。

我需要为更高版本做些什么。

更新

首先，我为同一个启动了一个AsyncTask ..有点像..

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                    //new RegistrationAsyncTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,(String[]) null);
                    new DownloadImageTask(user_picture).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, "http://graph.facebook.com/"+ userProfileID +"/picture?type=square");
                } else{
                    new DownloadImageTask(user_picture).execute("http://graph.facebook.com/"+ userProfileID +"/picture?type=square");

                }

这是我的AsyncTask类..

private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {

       // private ProgressDialog mDialog;
        private ImageView bmImage;

        public DownloadImageTask(ImageView bmImage) {
            this.bmImage = bmImage;
        }

        protected void onPreExecute() {

           // mDialog = ProgressDialog.show(ChartActivity.this,"Please wait...", "Retrieving data ...", true);
        }

        protected Bitmap doInBackground(String... urls) {
            Log.d("image", "do in");
            String urldisplay = urls[0];
            Bitmap mIcon11 = null;
            try {
                Log.d("image", "do 1");
                InputStream in = new java.net.URL(urldisplay).openStream();
                mIcon11 = BitmapFactory.decodeStream(in);
                Log.d("image", "do 2");
            } catch (Exception e) {
                Log.e("Error", "image download error");
                Log.e("Error", e.getMessage());
                e.printStackTrace();
                Log.d("image", "do catch");
            }
            Log.d("image", "do out");
            return mIcon11;
        }

        protected void onPostExecute(Bitmap result) {
            //set image of your imageview
            Log.d("image", "post");
            bmImage.setImageBitmap(result);
            //close
            //mDialog.dismiss();
        }
    }

现在它再次像低版本的魅力一样工作，但在更高版本的android中却没有。

Answer 1

您应该在后台线程中获取位图，因为在较高版本中不允许使用 NetworkOnUiThread 。所以它会抛出 NetworkOnUiThread Exception 。我正在 ICS 上发布完整的工作代码，并在清单中提供 INTERNET 权限。

   import java.net.MalformedURLException;
   import java.net.URL;

     import android.app.Activity;
     import android.graphics.Bitmap;
  import android.graphics.BitmapFactory;
    import android.os.AsyncTask;
    import android.os.Bundle;
      import android.widget.ImageView;

    public class MainActivity extends Activity {
private ImageView user_picture;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    user_picture=(ImageView)findViewById(R.id.user);
    new ImageTask().execute();
}



private class ImageTask extends AsyncTask<Void, Integer, Void> {
    Bitmap mIcon1;


    @Override
    protected Void doInBackground(Void... params) {
     try {
        URL img_value = null;
                img_value = new URL("http://graph.facebook.com/"+ userID +"/picture?type=square");
               mIcon1 = BitmapFactory.decodeStream(img_value.openConnection().getInputStream());
    } catch (MalformedURLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }


        return null;
    }

    @Override
    protected void onPostExecute(Void result) {

    if(mIcon1!=null)
  {
  user_picture.setImageBitmap(mIcon1);
   }
    }
}

   }

在更高版本中显示Facebook / Google plus个人资料图片

1 个答案: