Develop Reference

UnityPlayerActivity oncreate errors

I am trying to run very simple program which start with:
MainActivity extends UnityPlayerActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
But on the on create i get this error:
04-02 09:38:39.227: E/AndroidRuntime(32578): Device fingerprint: samsung/GT-I9100/GT-I9100:4.1.2/JZO54K/I9100XWLSW:user/release-keys
04-02 09:38:39.227: E/AndroidRuntime(32578): Caused by:java.lang.ExceptionInInitializerError
04-02 09:38:39.227: E/AndroidRuntime(32578): at com.unity3d.player.UnityPlayerActivity.onCreate(Unknown Source)
04-02 09:38:39.227: E/AndroidRuntime(32578): at com.example.t.MainActivity.onCreate(MainActivity.java:17)
04-02 09:38:39.227: E/AndroidRuntime(32578): at android.app.Activity.performCreate(Activity.java:5206)
04-02 09:38:39.227: E/AndroidRuntime(32578): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
04-02 09:38:39.227: E/AndroidRuntime(32578): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2074)
04-02 09:38:39.227: E/AndroidRuntime(32578): Caused by: java.lang.UnsatisfiedLinkError: Couldn't load main: findLibrary returned null
04-02 09:38:39.227: E/AndroidRuntime(32578): at java.lang.Runtime.loadLibrary(Runtime.java:365)
04-02 09:38:39.227: E/AndroidRuntime(32578): at java.lang.System.loadLibrary(System.java:535)
04-02 09:38:39.227: E/AndroidRuntime(32578): at com.unity3d.player.UnityPlayer.<clinit>(Unknown Source)
I use compiler 1.6 and took the jar - classes.jar from the unity folder
What can be wrong?

I think the problem is in the manifest.
Come here and follow the instructions!

Android Google Map API V2 - Error Inflating Class Fragment

I have been following Googles guide to making an app that allows you to view an app on an Android phone. I have followed many tutorials, but always end up with the same error! I have also searched around the web and figured my error is something to do with the "fragment". Here are my files:
MainActivity.java
package com.example.theapp;
import android.app.Activity;
import android.os.Bundle;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.MapFragment"/>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.theapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<permission
android:name="com.example.theapp.permission.MAPS_RECEIVE"
android:protectionLevel="signature"/>
<uses-permission android:name="com.example.theapp.permission.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!-- The following two permissions are not required to use
Google Maps Android API v2, but are recommended. -->
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="--REMOVED--"/>
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.theapp.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
</application>
I am using Android 2.3. Here is the log cat messages:
04-02 22:43:45.890: D/AndroidRuntime(23773): Shutting down VM
04-02 22:43:45.890: W/dalvikvm(23773): threadid=1: thread exiting with uncaught exception (group=0x40018578)
04-02 22:43:45.898: E/AndroidRuntime(23773): FATAL EXCEPTION: main
04-02 22:43:45.898: E/AndroidRuntime(23773): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.theapp/com.example.theapp.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.os.Handler.dispatchMessage(Handler.java:99)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.os.Looper.loop(Looper.java:130)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.app.ActivityThread.main(ActivityThread.java:3687)
04-02 22:43:45.898: E/AndroidRuntime(23773): at java.lang.reflect.Method.invokeNative(Native Method)
04-02 22:43:45.898: E/AndroidRuntime(23773): at java.lang.reflect.Method.invoke(Method.java:507)
04-02 22:43:45.898: E/AndroidRuntime(23773): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
04-02 22:43:45.898: E/AndroidRuntime(23773): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
04-02 22:43:45.898: E/AndroidRuntime(23773): at dalvik.system.NativeStart.main(Native Method)
04-02 22:43:45.898: E/AndroidRuntime(23773): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.view.LayoutInflater.inflate(LayoutInflater.java:386)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
04-02 22:43:45.898: E/AndroidRuntime(23773): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:209)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.app.Activity.setContentView(Activity.java:1657)
04-02 22:43:45.898: E/AndroidRuntime(23773): at com.example.theapp.MainActivity.onCreate(MainActivity.java:11)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
04-02 22:43:45.898: E/AndroidRuntime(23773): ... 11 more
04-02 22:43:45.898: E/AndroidRuntime(23773): Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader dalvik.system.PathClassLoader[/data/app/com.example.theapp-1.apk]
04-02 22:43:45.898: E/AndroidRuntime(23773): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
04-02 22:43:45.898: E/AndroidRuntime(23773): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
04-02 22:43:45.898: E/AndroidRuntime(23773): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.view.LayoutInflater.createView(LayoutInflater.java:471)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:549)
04-02 22:43:45.898: E/AndroidRuntime(23773): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
04-02 22:43:45.898: E/AndroidRuntime(23773): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
04-02 22:43:45.898: E/AndroidRuntime(23773): ... 19 more
04-02 22:55:53.289: D/AndroidRuntime(23942): Shutting down VM
04-02 22:55:53.289: W/dalvikvm(23942): threadid=1: thread exiting with uncaught exception (group=0x40018578)
04-02 22:55:53.304: E/AndroidRuntime(23942): FATAL EXCEPTION: main
04-02 22:55:53.304: E/AndroidRuntime(23942): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.theapp/com.example.theapp.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.os.Handler.dispatchMessage(Handler.java:99)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.os.Looper.loop(Looper.java:130)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.app.ActivityThread.main(ActivityThread.java:3687)
04-02 22:55:53.304: E/AndroidRuntime(23942): at java.lang.reflect.Method.invokeNative(Native Method)
04-02 22:55:53.304: E/AndroidRuntime(23942): at java.lang.reflect.Method.invoke(Method.java:507)
04-02 22:55:53.304: E/AndroidRuntime(23942): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
04-02 22:55:53.304: E/AndroidRuntime(23942): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
04-02 22:55:53.304: E/AndroidRuntime(23942): at dalvik.system.NativeStart.main(Native Method)
04-02 22:55:53.304: E/AndroidRuntime(23942): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.view.LayoutInflater.inflate(LayoutInflater.java:386)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
04-02 22:55:53.304: E/AndroidRuntime(23942): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:209)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.app.Activity.setContentView(Activity.java:1657)
04-02 22:55:53.304: E/AndroidRuntime(23942): at com.example.theapp.MainActivity.onCreate(MainActivity.java:11)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
04-02 22:55:53.304: E/AndroidRuntime(23942): ... 11 more
04-02 22:55:53.304: E/AndroidRuntime(23942): Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader dalvik.system.PathClassLoader[/data/app/com.example.theapp-2.apk]
04-02 22:55:53.304: E/AndroidRuntime(23942): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
04-02 22:55:53.304: E/AndroidRuntime(23942): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
04-02 22:55:53.304: E/AndroidRuntime(23942): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.view.LayoutInflater.createView(LayoutInflater.java:471)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:549)
04-02 22:55:53.304: E/AndroidRuntime(23942): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
04-02 22:55:53.304: E/AndroidRuntime(23942): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
04-02 22:55:53.304: E/AndroidRuntime(23942): ... 19 more
Any help would be appreciated. Thank you in advance.

package com.example.theapp;
import android.app.Activity;
import android.os.Bundle;
public class MainActivity extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
and in manifest add one more meta tag below previous one.
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="Api key" />

As far as I remember, You should include android-support-v4.jar file from Android SDK folder "sdk/extras/android/support/v4/android-support-v4.jar". If You dont have that file, in Your SDK Manager install Android Support Library, which is found under Extras.

Please check the following steps:
In android manifest you have the NETWORK STATE permission like this
< uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
In android manifest make sure you have the following code as well-
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value=" YOUR KEY HERE" />
<meta-data
android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
Lastly if you are testing your application on android API 5.x then make sure you modify your map code like this-
Instead of this
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
write this
map = getMapFragment().getMap();
and add a small method like this
private MapFragment getMapFragment() {
FragmentManager fm = null;
Log.d("", "sdk: " + Build.VERSION.SDK_INT);
Log.d("", "release: " + Build.VERSION.RELEASE);
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
Log.d("", "using getFragmentManager");
fm = getFragmentManager();
} else {
Log.d("", "using getChildFragmentManager");
fm = getChildFragmentManager();
}
return (MapFragment) fm.findFragmentById(R.id.map);
}
And make sure for step 3 your min sdk version in your manifest file is 17 like this
<uses-sdk
android:minSdkVersion="17"
android:targetSdkVersion="21" />

BlackjackGTV sample - OutOfMemory

I'm trying to get the Blackjack Google TV sample working on a Vizio Co-Star (Google TV). I downloaded the sample code from https://code.google.com/p/googletv-android-samples/ but when I deploy it to the Vizio, I get an OutOfMemory error.
Has anyone gotten the Blackjack GTV sample working?
Full Stack Trace:
04-02 13:32:56.364: E/dalvikvm-heap(4027): Out of memory on a 78655376-byte allocation.
04-02 13:32:56.374: E/AndroidRuntime(4027): FATAL EXCEPTION: main
04-02 13:32:56.374: E/AndroidRuntime(4027): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.google.android.tv.blackjack/com.google.android.tv.blackjack.BlackJackTableActivity}: android.view.InflateException: Binary XML file line #17: Error inflating class
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1836)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1852)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.app.ActivityThread.access$500(ActivityThread.java:124)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1038)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.os.Handler.dispatchMessage(Handler.java:99)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.os.Looper.loop(Looper.java:132)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.app.ActivityThread.main(ActivityThread.java:4196)
04-02 13:32:56.374: E/AndroidRuntime(4027): at java.lang.reflect.Method.invokeNative(Native Method)
04-02 13:32:56.374: E/AndroidRuntime(4027): at java.lang.reflect.Method.invoke(Method.java:491)
04-02 13:32:56.374: E/AndroidRuntime(4027): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
04-02 13:32:56.374: E/AndroidRuntime(4027): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
04-02 13:32:56.374: E/AndroidRuntime(4027): at dalvik.system.NativeStart.main(Native Method)
04-02 13:32:56.374: E/AndroidRuntime(4027): Caused by: android.view.InflateException: Binary XML file line #17: Error inflating class
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.view.LayoutInflater.createView(LayoutInflater.java:596)
04-02 13:32:56.374: E/AndroidRuntime(4027): at com.android.internal.policy.impl.tv.TvLayoutInflater.onCreateView(TvLayoutInflater.java:50)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:644)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:669)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.view.LayoutInflater.inflate(LayoutInflater.java:457)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.view.LayoutInflater.inflate(LayoutInflater.java:391)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.view.LayoutInflater.inflate(LayoutInflater.java:347)
04-02 13:32:56.374: E/AndroidRuntime(4027): at com.android.internal.policy.impl.tv.TvWindow.setContentView(TvWindow.java:248)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.app.Activity.setContentView(Activity.java:1809)
04-02 13:32:56.374: E/AndroidRuntime(4027): at com.google.android.tv.blackjack.BlackJackTableActivity.onCreate(BlackJackTableActivity.java:58)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.app.Activity.performCreate(Activity.java:4438)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1800)
04-02 13:32:56.374: E/AndroidRuntime(4027): ... 11 more
04-02 13:32:56.374: E/AndroidRuntime(4027): Caused by: java.lang.reflect.InvocationTargetException
04-02 13:32:56.374: E/AndroidRuntime(4027): at java.lang.reflect.Constructor.constructNative(Native Method)
04-02 13:32:56.374: E/AndroidRuntime(4027): at java.lang.reflect.Constructor.newInstance(Constructor.java:416)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.view.LayoutInflater.createView(LayoutInflater.java:576)
04-02 13:32:56.374: E/AndroidRuntime(4027): ... 23 more
04-02 13:32:56.374: E/AndroidRuntime(4027): Caused by: java.lang.OutOfMemoryError
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.graphics.Bitmap.nativeCreate(Native Method)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.graphics.Bitmap.createBitmap(Bitmap.java:604)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.graphics.Bitmap.createBitmap(Bitmap.java:551)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:437)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.graphics.BitmapFactory.finishDecode(BitmapFactory.java:524)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:499)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:351)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:738)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.content.res.Resources.loadDrawable(Resources.java:1918)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.view.View.(View.java:2477)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.view.ViewGroup.(ViewGroup.java:379)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.widget.FrameLayout.(FrameLayout.java:94)
04-02 13:32:56.374: E/AndroidRuntime(4027): at android.widget.FrameLayout.(FrameLayout.java:90)
04-02 13:32:56.374: E/AndroidRuntime(4027): ... 26 more

If you open the layout file and remove the android:background="#drawable/green_background" from the source then it will work for you. There was a memory partition change recently and the sample has not been updated to reduce its memory footprint (eg. Big Bitmap image)

Failure delivering result ResultInfo in Action Bar Sherlock, Facebook

I'm using the Action bar sherlock library in my application and I currently have one two tabs as fragments:
Tab A : Users views information in a list
Tab B : Users can log into facebook
I need the onActivityResult() to handle Facebook sessions in Tab B so I have this code in my Main Activity :
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
}
However, this creates this error log when i press the Back Button in Tab A:
04-02 19:46:07.488: E/AndroidRuntime(1380): FATAL EXCEPTION: main
04-02 19:46:07.488: E/AndroidRuntime(1380): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=65537, result=0, data=null} to activity {com.example.chartviewer/com.example.chartviewer.MainActivity}: java.lang.NullPointerException
04-02 19:46:07.488: E/AndroidRuntime(1380): at android.app.ActivityThread.deliverResults(ActivityThread.java:3141)
04-02 19:46:07.488: E/AndroidRuntime(1380): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3184)
04-02 19:46:07.488: E/AndroidRuntime(1380): at android.app.ActivityThread.access$1100(ActivityThread.java:130)
04-02 19:46:07.488: E/AndroidRuntime(1380): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1243)
04-02 19:46:07.488: E/AndroidRuntime(1380): at android.os.Handler.dispatchMessage(Handler.java:99)
04-02 19:46:07.488: E/AndroidRuntime(1380): at android.os.Looper.loop(Looper.java:137)
04-02 19:46:07.488: E/AndroidRuntime(1380): at android.app.ActivityThread.main(ActivityThread.java:4745)
04-02 19:46:07.488: E/AndroidRuntime(1380): at java.lang.reflect.Method.invokeNative(Native Method)
04-02 19:46:07.488: E/AndroidRuntime(1380): at java.lang.reflect.Method.invoke(Method.java:511)
04-02 19:46:07.488: E/AndroidRuntime(1380): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
04-02 19:46:07.488: E/AndroidRuntime(1380): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
04-02 19:46:07.488: E/AndroidRuntime(1380): at dalvik.system.NativeStart.main(Native Method)
04-02 19:46:07.488: E/AndroidRuntime(1380): Caused by: java.lang.NullPointerException
04-02 19:46:07.488: E/AndroidRuntime(1380): at com.example.chartviewer.MainActivity.onActivityResult(MainActivity.java:91)
04-02 19:46:07.488: E/AndroidRuntime(1380): at android.app.Activity.dispatchActivityResult(Activity.java:5192)
04-02 19:46:07.488: E/AndroidRuntime(1380): at android.app.ActivityThread.deliverResults(ActivityThread.java:3137)
04-02 19:46:07.488: E/AndroidRuntime(1380): ... 11 more
Any idea how to handle this?

Android: Unable to resume activity

I am trying to integrate Twitter in my Application. I want a pop-up to be shown in which the user can enter his tweet.
Now when the user is already logged in, the application is working fine, but if the user needs to log-in first then the applications opens the twitter web-interface of login. From there, I am not able to come back to my application and show the 'enter-tweet' popup.
Please help.
Exception:
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): java.lang.RuntimeException: Unable to resume activity {mad.android.MyTwitterApp/mad.android.MyTwitterApp.AndroidTwitterSample}: java.lang.NullPointerException
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3128)
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3143)
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2059)
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at android.os.Handler.dispatchMessage(Handler.java:99)
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at android.os.Looper.loop(Looper.java:123)
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at java.lang.reflect.Method.invokeNative(Native Method)
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at java.lang.reflect.Method.invoke(Method.java:521)
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:871)
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)
04-02 00:16:53.511: ERROR/AndroidRuntime(5992): at dalvik.system.NativeStart.main(Native Method)