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POList all the images on android device
 

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    <p>I was trying to list all the images in android device with their paths since 14 hours straight but I wasn't able to .. It keeps giving me "java.lang.RuntimeException: Unable to start activity ComponentInfo" error.</p> <p>I don't understand why.. </p> <p>Any help?? </p> <pre><code>package com.example.allpicsexample; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.provider.MediaStore; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.GridView; import android.widget.ImageView; import android.widget.AdapterView.OnItemClickListener; /** * Displays images from an SD card. */ public class MainActivity extends Activity { /** * Cursor used to access the results from querying for images on the SD card. */ private Cursor cursor; /* * Column index for the Thumbnails Image IDs. */ private int columnIndex; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); String filePath = cursor.getString(cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA)); System.out.println("the path is : "+filePath); } } </code></pre> <p>and here is the LogCat info:</p> <blockquote> <p>11-14 08:29:01.739: D/AndroidRuntime(16788): Shutting down VM 11-14 08:29:01.739: W/dalvikvm(16788): threadid=1: thread exiting with uncaught exception (group=0x40018578) 11-14 08:29:01.749: E/AndroidRuntime(16788): FATAL EXCEPTION: main 11-14 08:29:01.749: E/AndroidRuntime(16788): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.allpicsexample/com.example.allpicsexample.MainActivity}: java.lang.NullPointerException 11-14 08:29:01.749: E/AndroidRuntime(16788): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651) 11-14 08:29:01.749: E/AndroidRuntime(16788): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667) 11-14 08:29:01.749: E/AndroidRuntime(16788): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 11-14 08:29:01.749: E/AndroidRuntime(16788): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 11-14 08:29:01.749: E/AndroidRuntime(16788): at android.os.Handler.dispatchMessage(Handler.java:99) 11-14 08:29:01.749: E/AndroidRuntime(16788): at android.os.Looper.loop(Looper.java:130) 11-14 08:29:01.749: E/AndroidRuntime(16788): at android.app.ActivityThread.main(ActivityThread.java:3687) 11-14 08:29:01.749: E/AndroidRuntime(16788): at java.lang.reflect.Method.invokeNative(Native Method) 11-14 08:29:01.749: E/AndroidRuntime(16788): at java.lang.reflect.Method.invoke(Method.java:507) 11-14 08:29:01.749: E/AndroidRuntime(16788): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867) 11-14 08:29:01.749: E/AndroidRuntime(16788): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625) 11-14 08:29:01.749: E/AndroidRuntime(16788): at dalvik.system.NativeStart.main(Native Method) 11-14 08:29:01.749: E/AndroidRuntime(16788): Caused by: java.lang.NullPointerException 11-14 08:29:01.749: E/AndroidRuntime(16788): at com.example.allpicsexample.MainActivity.onCreate(MainActivity.java:37) 11-14 08:29:01.749: E/AndroidRuntime(16788): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 11-14 08:29:01.749: E/AndroidRuntime(16788): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615) 11-14 08:29:01.749: E/AndroidRuntime(16788): ... 11 more</p> </blockquote> <p>Here is the 2nd crash log after implementing Abhishek's code</p> <blockquote> <p>11-14 10:00:20.159: D/AndroidRuntime(19266): Shutting down VM 11-14 10:00:20.159: W/dalvikvm(19266): threadid=1: thread exiting with uncaught exception (group=0x40018578) 11-14 10:00:20.189: E/AndroidRuntime(19266): FATAL EXCEPTION: main 11-14 10:00:20.189: E/AndroidRuntime(19266): android.app.SuperNotCalledException: Activity {com.example.allpicsexample/com.example.allpicsexample.MainActivity} did not call through to super.onCreate() 11-14 10:00:20.189: E/AndroidRuntime(19266): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1617) 11-14 10:00:20.189: E/AndroidRuntime(19266): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667) 11-14 10:00:20.189: E/AndroidRuntime(19266): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 11-14 10:00:20.189: E/AndroidRuntime(19266): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 11-14 10:00:20.189: E/AndroidRuntime(19266): at android.os.Handler.dispatchMessage(Handler.java:99) 11-14 10:00:20.189: E/AndroidRuntime(19266): at android.os.Looper.loop(Looper.java:130) 11-14 10:00:20.189: E/AndroidRuntime(19266): at android.app.ActivityThread.main(ActivityThread.java:3687) 11-14 10:00:20.189: E/AndroidRuntime(19266): at java.lang.reflect.Method.invokeNative(Native Method) 11-14 10:00:20.189: E/AndroidRuntime(19266): at java.lang.reflect.Method.invoke(Method.java:507) 11-14 10:00:20.189: E/AndroidRuntime(19266): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867) 11-14 10:00:20.189: E/AndroidRuntime(19266): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625) 11-14 10:00:20.189: E/AndroidRuntime(19266): at dalvik.system.NativeStart.main(Native Method)</p> </blockquote>
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    1. COHi, could you please provide a full log? Make sure you didn't forget to declare your activity inside the application's manifest. Cheers!
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    2. CO@k3v1n4ud3 I've pasted the full logcat log, you can check now.. Thanks :)
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    3. CO@k3v1n4ud3 you can also tell me a method to list all the images in an android device....
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