ارور هنگام آپلود فایل 

زمانی که برای آپلود فایل از کد زیر استفاده می کنم، در ورژن 2.3.7 اندروید فایل آپلود میشه اما زمانی که در ورژن 4.1.1 اجرا می کنم با ارور مواجه میشم

 public void uploadImage(String url, String selectedPath) {
        HttpClient client = new DefaultHttpClient();
        HttpPost post = new HttpPost(url);

        MultipartEntityBuilder builder = MultipartEntityBuilder.create();
        builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
        File f = new File(selectedPath);
        if (f.exists())
        {
            builder.addTextBody("key", "vahid");
            builder.addBinaryBody("uploaded_file", f);
            HttpEntity entity = builder.build();
            //
            post.setEntity(entity);
            try {
                HttpResponse response = client.execute(post); //خط ارور
                HttpEntity entity1 = response.getEntity();

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

logCat

 11-11 07:20:33.032: E/AndroidRuntime(2033): FATAL EXCEPTION: main
11-11 07:20:33.032: E/AndroidRuntime(2033): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, 
request=2, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.uncocoder/com.uncocoder.myapp.ImageChooser}: 
android.os.NetworkOnMainThreadException
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at android.app.ActivityThread.deliverResults(ActivityThread.java:3141)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at android.app.ActivityThread.handleSendResult(ActivityThread.java:3184)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at android.app.ActivityThread.access$1100(ActivityThread.java:130)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1243)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at android.os.Handler.dispatchMessage(Handler.java:99)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at android.os.Looper.loop(Looper.java:137)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at android.app.ActivityThread.main(ActivityThread.java:4745)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at java.lang.reflect.Method.invokeNative(Native Method)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at java.lang.reflect.Method.invoke(Method.java:511)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at dalvik.system.NativeStart.main(Native Method)
11-11 07:20:33.032: E/AndroidRuntime(2033): Caused by: android.os.NetworkOnMainThreadException
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at libcore.io.IoBridge.connect(IoBridge.java:112)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at java.net.Socket.connect(Socket.java:842)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at org.apache.http.impl.conn.DefaultClientConnectionOperator.
openConnection(DefaultClientConnectionOperator.java:144)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at com.uncocoder.myapp.ImageChooser.uploadImage(ImageChooser.java:285)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at com.uncocoder.myapp.ImageChooser.onActivityResult(ImageChooser.java:160)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at android.app.Activity.dispatchActivityResult(Activity.java:5192)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	at android.app.ActivityThread.deliverResults(ActivityThread.java:3137)
11-11 07:20:33.032: E/AndroidRuntime(2033): 	... 11 more