How to set a Image to a Image View from a URL Android

Question

I am trying to download and show a image in my imageview from URL that i will get dyncamically .I have tried this way

 URL url = new URL(parsedWeatherRespo         


        

Answer 1

You are running the network related operation on the ui thread. So, you get NetworkOnMainThreadException.

Bitmap bmp = BitmapFactory.decodeStream(url.openConnection().getInputStream());

http://developer.android.com/reference/android/os/NetworkOnMainThreadException.html

You should use a Thread or Asynctask.

http://developer.android.com/reference/android/os/AsyncTask.html.

Check the docs there is an example.

Example:

public class MainActivity extends Activity {
    ImageView iv ;
    ProgressDialog pd; 
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    pd = new ProgressDialog(this);
    pd.setMessage("Downloading Image");
    iv = (ImageView) findViewById(R.id.imageView1);
    Button b1 = (Button) findViewById(R.id.button1);
    b1.setOnClickListener(new OnClickListener()
    {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
             new DownloadImageTask(iv).execute("http://a3.twimg.com/profile_images/740897825/AndroidCast-350_normal.png");
        }

    });

}
class DownloadImageTask extends AsyncTask {
    ImageView bmImage;

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

    @Override
    protected void onPreExecute() {
        // TODO Auto-generated method stub
        super.onPreExecute();
        pd.show();
    }

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

    @Override 
    protected void onPostExecute(Bitmap result) {
        super.onPostExecute(result);
        pd.dismiss();
        bmImage.setImageBitmap(result);
    }
  }
}

activity_main.xml

Snap