Thursday 16 November 2017

Caused by: android.os.NetworkOnMainThreadException





Hi all Viewers and readers, I am using href="http://www.androidhive.info/2012/02/android-custom-listview-with-image-and-text/">link.
Whenever I run this code in separate package it works fine, but whenever I am trying to
embed this sample in my app, getting Unfortunately app has stopped, only when i click on
tab that particular tab which calling it, and Logcat says:-



Caused by:
            android.os.NetworkOnMainThreadException

10-30 15:07:35.341:
            E/AndroidRuntime(732): at
            android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117),


please
tell me what i need to do make it useful for me, except this particular tab whole app
working fine.



 10-30 15:07:26.770:
            D/dalvikvm(732): GC_FOR_ALLOC freed 61K, 3% free 8035K/8259K, paused 39ms, total
            46ms
 10-30 15:07:26.781: I/dalvikvm-heap(732): Grow heap (frag case) to
            8.481MB for 614416-byte allocation
 10-30 15:07:26.850: D/dalvikvm(732):
            GC_CONCURRENT freed 1K, 4% free 8634K/8903K, paused 27ms+13ms, total 71ms

            10-30 15:07:26.881: D/dalvikvm(732): GC_FOR_ALLOC freed 0K, 4% free 8634K/8903K, paused
            28ms, total 28ms
 10-30 15:07:26.900: I/dalvikvm-heap(732): Grow heap (frag
            case) to 9.798MB for 1382416-byte allocation

 10-30 15:07:26.970:
            D/dalvikvm(732): GC_CONCURRENT freed 0K, 4% free 9984K/10311K, paused 28ms+5ms, total
            72ms
 10-30 15:07:27.110: D/gralloc_goldfish(732): Emulator without GPU
            emulation detected.
 10-30 15:07:30.591: D/dalvikvm(732): GC_FOR_ALLOC freed
            675K, 8% free 9875K/10695K, paused 33ms, total 62ms
 10-30 15:07:30.671:
            D/dalvikvm(732): GC_FOR_ALLOC freed 519K, 9% free 9806K/10695K, paused 30ms, total
            31ms
 10-30 15:07:30.740: D/dalvikvm(732): GC_FOR_ALLOC freed 310K, 10% free
            9713K/10695K, paused 28ms, total 29ms
 10-30 15:07:30.751:
            I/dalvikvm-heap(732): Grow heap (frag case) to 10.488MB for 1000016-byte
            allocation
 10-30 15:07:30.820: D/dalvikvm(732): GC_CONCURRENT freed <1K,
            9% free 10690K/11719K, paused 25ms+5ms, total 74ms
 10-30 15:07:30.911:
            D/dalvikvm(732): GC_FOR_ALLOC freed 0K, 9% free 10690K/11719K, paused 36ms, total
            36ms
 10-30 15:07:30.931: I/dalvikvm-heap(732): Grow heap (frag case) to
            12.633MB for 2250016-byte allocation
 10-30 15:07:31.030: D/dalvikvm(732):
            GC_CONCURRENT freed 0K, 8% free 12887K/13959K, paused 32ms+16ms, total
            93ms

 10-30 15:07:31.211: D/dalvikvm(732): GC_FOR_ALLOC freed
            3683K, 30% free 10314K/14599K, paused 35ms, total 38ms
 10-30 15:07:31.211:
            I/dalvikvm-heap(732): Grow heap (frag case) to 11.439MB for 1382416-byte
            allocation
 10-30 15:07:31.360: D/dalvikvm(732): GC_CONCURRENT freed <1K,
            21% free 11663K/14599K, paused 81ms+5ms, total 144ms
 10-30 15:07:31.551:
            D/dalvikvm(732): GC_FOR_ALLOC freed 2555K, 32% free 9936K/14599K, paused 32ms, total
            38ms
 10-30 15:07:31.561: I/dalvikvm-heap(732): Grow heap (frag case) to
            10.706MB for 1000016-byte allocation
 10-30 15:07:31.701: D/dalvikvm(732):
            GC_CONCURRENT freed 1K, 26% free 10912K/14599K, paused 78ms+16ms, total 139ms

            10-30 15:07:31.770: D/dalvikvm(732): GC_FOR_ALLOC freed 0K, 26% free 10912K/14599K,
            paused 31ms, total 31ms
 10-30 15:07:31.770: I/dalvikvm-heap(732): Grow heap
            (frag case) to 12.850MB for 2250016-byte allocation
 10-30 15:07:31.871:
            D/dalvikvm(732): GC_CONCURRENT freed 0K, 11% free 13109K/14599K, paused 29ms+6ms, total
            91ms
 10-30 15:07:32.060: D/dalvikvm(732): GC_FOR_ALLOC freed 1134K, 11% free
            13102K/14599K, paused 35ms, total 39ms

 10-30 15:07:32.070:
            I/dalvikvm-heap(732): Grow heap (frag case) to 14.162MB for 1382416-byte
            allocation
 10-30 15:07:32.150: D/dalvikvm(732): GC_FOR_ALLOC freed <1K,
            10% free 14451K/16007K, paused 36ms, total 36ms
 10-30 15:07:32.161:
            I/Choreographer(732): Skipped 460 frames! The application may be doing too much work on
            its main thread.
 10-30 15:07:35.280: D/AndroidRuntime(732): Shutting down
            VM
 10-30 15:07:35.280: W/dalvikvm(732): threadid=1: thread exiting with
            uncaught exception (group=0x40a13300)
 10-30 15:07:35.341:
            E/AndroidRuntime(732): FATAL EXCEPTION: main
 10-30 15:07:35.341:
            E/AndroidRuntime(732): java.lang.RuntimeException: Unable to start activity
            ComponentInfo{com.erachnida.restaurant.versionoct/com.erachnida.restaurant.versionoct.CustomizedListView}:
            android.os.NetworkOnMainThreadException
 10-30 15:07:35.341:
            E/AndroidRuntime(732): at
            android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            android.app.ActivityThread.startActivityNow(ActivityThread.java:1900)
 10-30
            15:07:35.341: E/AndroidRuntime(732): at
            android.app.LocalActivityManager.moveToState(LocalActivityManager.java:135)


            10-30 15:07:35.341: E/AndroidRuntime(732): at
            android.app.LocalActivityManager.startActivity(LocalActivityManager.java:347)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:694)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            android.widget.TabHost.setCurrentTab(TabHost.java:358)
 10-30 15:07:35.341:
            E/AndroidRuntime(732): at
            android.widget.TabHost$2.onTabSelectionChanged(TabHost.java:150)
 10-30
            15:07:35.341: E/AndroidRuntime(732): at
            android.widget.TabWidget$TabClickListener.onClick(TabWidget.java:546)
 10-30
            15:07:35.341: E/AndroidRuntime(732): at
            android.view.View.performClick(View.java:4084)
 10-30 15:07:35.341:
            E/AndroidRuntime(732): at android.view.View$PerformClick.run(View.java:16966)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            android.os.Handler.handleCallback(Handler.java:615)
 10-30 15:07:35.341:
            E/AndroidRuntime(732): at android.os.Handler.dispatchMessage(Handler.java:92)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            android.os.Looper.loop(Looper.java:137)

 10-30 15:07:35.341:
            E/AndroidRuntime(732): at
            android.app.ActivityThread.main(ActivityThread.java:4745)
 10-30 15:07:35.341:
            E/AndroidRuntime(732): at java.lang.reflect.Method.invokeNative(Native
            Method)
 10-30 15:07:35.341: E/AndroidRuntime(732): at
            java.lang.reflect.Method.invoke(Method.java:511)
 10-30 15:07:35.341:
            E/AndroidRuntime(732): at
            com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
 10-30
            15:07:35.341: E/AndroidRuntime(732): at dalvik.system.NativeStart.main(Native
            Method)
 10-30 15:07:35.341: E/AndroidRuntime(732): Caused by:
            android.os.NetworkOnMainThreadException
 10-30 15:07:35.341:
            E/AndroidRuntime(732): at
            android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            java.net.InetAddress.lookupHostByName(InetAddress.java:385)
 10-30
            15:07:35.341: E/AndroidRuntime(732): at
            java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)

 10-30
            15:07:35.341: E/AndroidRuntime(732): at
            java.net.InetAddress.getAllByName(InetAddress.java:214)
 10-30 15:07:35.341:
            E/AndroidRuntime(732): at
            org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:137)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            com.erachnida.restaurant.versionoct.XMLParser.getXmlFromUrl(XMLParser.java:45)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            com.erachnida.restaurant.versionoct.CustomizedListView.onCreate(CustomizedListView.java:42)


            10-30 15:07:35.341: E/AndroidRuntime(732): at
            android.app.Activity.performCreate(Activity.java:5008)
 10-30 15:07:35.341:
            E/AndroidRuntime(732): at
            android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)

            10-30 15:07:35.341: E/AndroidRuntime(732): at
            android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)

            10-30 15:07:35.341: E/AndroidRuntime(732): ... 18 more
 10-30 15:07:42.250:
            I/Process(732): Sending signal. PID: 732 SIG:
            9

itemprop="text">
class="normal">Answer



There are
two Solution of this Problem.



1) Don't write
network call in Main UI Thread, Use Async Task for
that.




2) Write below code into your
MainActivity file after
setContentView(R.layout.activity_main);



if
            (android.os.Build.VERSION.SDK_INT > 9) {
 StrictMode.ThreadPolicy policy =
            new StrictMode.ThreadPolicy.Builder().permitAll().build();

            StrictMode.setThreadPolicy(policy);
}


And
below import statement into your java
file.




import
            android.os.StrictMode;


-

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