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androidbitmapimageurl

Image view image from imageurl giving exception

i am using image-URL to represent image in an imageView but my android application is throwing the following exception. i am using asynchronous task to fetch the image URL and putting it in imageview in onpostexecute() method.

Mycode 

protected void onPostExecute(Void result) {
            // TODO Auto-generated method stub
            super.onPostExecute(result);
            ImageView i=(ImageView)findViewById(R.id.imageView1);
            Bitmap bitmap;
            Drawable d;
            try {
                bitmap = BitmapFactory.decodeStream((InputStream)new URL(logo.get(0)).getContent());
                 i.setImageBitmap(bitmap); 


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

logcat exeception

03-05 06:34:25.148: E/AndroidRuntime(1653): FATAL EXCEPTION: main
03-05 06:34:25.148: E/AndroidRuntime(1653): android.os.NetworkOnMainThreadException
03-05 06:34:25.148: E/AndroidRuntime(1653):     at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at java.net.InetAddress.lookupHostByName(InetAddress.java:385)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at java.net.InetAddress.getAllByName(InetAddress.java:214)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at libcore.net.http.HttpConnection.<init>(HttpConnection.java:70)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:340)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:316)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at libcore.net.http.HttpEngine.connect(HttpEngine.java:311)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:290)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:240)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at libcore.net.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:81)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at java.net.URLConnection.getContent(URLConnection.java:190)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at java.net.URL.getContent(URL.java:447)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at com.example.slideoutmenu.LayerStack$logo.onPostExecute(LayerStack.java:249)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at com.example.slideoutmenu.LayerStack$logo.onPostExecute(LayerStack.java:1)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at android.os.AsyncTask.finish(AsyncTask.java:631)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at android.os.AsyncTask.access$600(AsyncTask.java:177)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at android.os.Handler.dispatchMessage(Handler.java:99)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at android.os.Looper.loop(Looper.java:137)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at android.app.ActivityThread.main(ActivityThread.java:5039)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at java.lang.reflect.Method.invokeNative(Native Method)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at java.lang.reflect.Method.invoke(Method.java:511)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
03-05 06:34:25.148: E/AndroidRuntime(1653):     at dalvik.system.NativeStart.main(Native Method)

how can i show the image from imageurl.

Solution

  • onPostExecute() method runs on the UI thread. You should move the following line to the doInBackground() method.

    bitmap = BitmapFactory.decodeStream((InputStream)new URL(logo.get(0)).getContent());