Unable to show images in android emulator over 4.0 version?

Question

I am trying to show one image from web service by consuming it.Well its working fine.If i test my project with android versions like 2 - 3 versions its working fine.But it is not supporting over 4.0 and above. Why?

How to overcome this issue?

Following is my code,

Bitmap bitmap = BitmapFactory.decodeStream((InputStream)new URL(img_url).getContent());
imgvw.setImageBitmap(bitmap);

Logcat

03-23 14:59:17.696: I/System.out(386): Intent { cmp=com.example.png/.tab_cameraActivity }
03-23 14:59:17.696: I/System.out(386): LB 3
03-23 14:59:17.716: D/AndroidRuntime(386): Shutting down VM
03-23 14:59:17.716: W/dalvikvm(386): threadid=1: thread exiting with uncaught exception (group=0x40014760)
03-23 14:59:17.736: E/AndroidRuntime(386): FATAL EXCEPTION: main
03-23 14:59:17.736: E/AndroidRuntime(386): java.lang.RuntimeException: Unable to start  activity ComponentInfo{com.example.png/com.example.png.tab_cameraActivity}: android.os.NetworkOnMainThreadException
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1736)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.app.ActivityThread.startActivityNow(ActivityThread.java:1577)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:130)
03-23 14:59:17.736: E/AndroidRuntime(386):  at  android.app.LocalActivityManager.startActivity(LocalActivityManager.java:342)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:680)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.widget.TabHost.setCurrentTab(TabHost.java:349)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.widget.TabHost$2.onTabSelectionChanged(TabHost.java:149)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.widget.TabWidget$TabClickListener.onClick(TabWidget.java:556)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.view.View.performClick(View.java:3100)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.view.View$PerformClick.run(View.java:11644)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.os.Handler.handleCallback(Handler.java:587)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.os.Handler.dispatchMessage(Handler.java:92)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.os.Looper.loop(Looper.java:126)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.app.ActivityThread.main(ActivityThread.java:3997)
03-23 14:59:17.736: E/AndroidRuntime(386):  at java.lang.reflect.Method.invokeNative(Native Method)
03-23 14:59:17.736: E/AndroidRuntime(386):  at java.lang.reflect.Method.invoke(Method.java:491)
03-23 14:59:17.736: E/AndroidRuntime(386):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
03-23 14:59:17.736: E/AndroidRuntime(386):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
03-23 14:59:17.736: E/AndroidRuntime(386):  at dalvik.system.NativeStart.main(Native Method)
03-23 14:59:17.736: E/AndroidRuntime(386): Caused by: android.os.NetworkOnMainThreadException
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1077)
03-23 14:59:17.736: E/AndroidRuntime(386):  at java.net.InetAddress.lookupHostByName(InetAddress.java:481)
03-23 14:59:17.736: E/AndroidRuntime(386):  at java.net.InetAddress.getAllByNameImpl(InetAddress.java:281)
03-23 14:59:17.736: E/AndroidRuntime(386):  at java.net.InetAddress.getAllByName(InetAddress.java:249)
03-23 14:59:17.736: E/AndroidRuntime(386):  at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:69)
03-23 14:59:17.736: E/AndroidRuntime(386):  at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:48)
03-23 14:59:17.736: E/AndroidRuntime(386):  at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection$Address.connect(HttpConnection.java:304)
03-23 14:59:17.736: E/AndroidRuntime(386):  at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:89)
03-23 14:59:17.736: E/AndroidRuntime(386):  at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHttpConnection(HttpURLConnectionImpl.java:292)
03-23 14:59:17.736: E/AndroidRuntime(386):  at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.makeConnection(HttpURLConnectionImpl.java:274)
03-23 14:59:17.736: E/AndroidRuntime(386):  at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:217)
 03-23 14:59:17.736: E/AndroidRuntime(386):     at org.ksoap2.transport.ServiceConnectionSE.connect(ServiceConnectionSE.java:76)
03-23 14:59:17.736: E/AndroidRuntime(386):  at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:153)
03-23 14:59:17.736: E/AndroidRuntime(386):  at org.ksoap2.transport.HttpTransportSE.call(HttpTransportSE.java:95)
03-23 14:59:17.736: E/AndroidRuntime(386):  at com.example.png.tab_cameraActivity.getImagesDetails(tab_cameraActivity.java:73)
03-23 14:59:17.736: E/AndroidRuntime(386):  at   com.example.png.tab_cameraActivity.onCreate(tab_cameraActivity.java:57)
03-23 14:59:17.736: E/AndroidRuntime(386):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
 03-23 14:59:17.736: E/AndroidRuntime(386):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1700)
03-23 14:59:17.736: E/AndroidRuntime(386):  ... 18 more

Answer 1

You are getting exception.

NetworkOnMainThreadException: The exception that is thrown when an application attempts to perform a networking operation on its main thread.

so you have to use AsyncTask.

Here is example of AsyncTask.

http://android-developers.blogspot.in/2009/05/painless-threading.html

Answer 2

Chances are that you execute this code inside the UI Thread. This is prohibited in Android HoneyComb and above. You should consider using an AsyncTask or an Android Service to perform this request. Different options are available to help you with that. As a contributor of RoboSpice, I believe this library would help.