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POAndroid Application Crashes in Emulator
 

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    <p>My Android application crashes in the emulator with, with the following being output to the logs:</p> <pre><code>09-26 14:04:02.123: D/dalvikvm(716): GC_FOR_ALLOC freed 66K, 6% free 2675K/2844K, paused 29ms, total 30ms 09-26 14:04:02.123: I/dalvikvm-heap(716): Grow heap (frag case) to 3.455MB for 782224-byte allocation 09-26 14:04:02.173: D/dalvikvm(716): GC_FOR_ALLOC freed 2K, 5% free 3437K/3608K, paused 42ms, total 42ms 09-26 14:04:02.303: D/dalvikvm(716): GC_FOR_ALLOC freed &lt;1K, 5% free 3436K/3608K, paused 38ms, total 39ms 09-26 14:04:02.314: I/dalvikvm-heap(716): Grow heap (frag case) to 4.778MB for 1389712-byte allocation 09-26 14:04:02.363: D/dalvikvm(716): GC_FOR_ALLOC freed &lt;1K, 4% free 4793K/4968K, paused 52ms, total 52ms 09-26 14:04:02.423: D/AndroidRuntime(716): Shutting down VM 09-26 14:04:02.423: W/dalvikvm(716): threadid=1: thread exiting with uncaught exception (group=0x414c4700) 09-26 14:04:02.433: E/AndroidRuntime(716): FATAL EXCEPTION: main 09-26 14:04:02.433: E/AndroidRuntime(716): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.sample_proj/com.example.sample_proj.MainActivity}: java.lang.NullPointerException 09-26 14:04:02.433: E/AndroidRuntime(716): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211) 09-26 14:04:02.433: E/AndroidRuntime(716): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261) 09-26 14:04:02.433: E/AndroidRuntime(716): at android.app.ActivityThread.access$600(ActivityThread.java:141) 09-26 14:04:02.433: E/AndroidRuntime(716): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256) 09-26 14:04:02.433: E/AndroidRuntime(716): at android.os.Handler.dispatchMessage(Handler.java:99) 09-26 14:04:02.433: E/AndroidRuntime(716): at android.os.Looper.loop(Looper.java:137) 09-26 14:04:02.433: E/AndroidRuntime(716): at android.app.ActivityThread.main(ActivityThread.java:5103) 09-26 14:04:02.433: E/AndroidRuntime(716): at java.lang.reflect.Method.invokeNative(Native Method) 09-26 14:04:02.433: E/AndroidRuntime(716): at java.lang.reflect.Method.invoke(Method.java:525) 09-26 14:04:02.433: E/AndroidRuntime(716): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737) 09-26 14:04:02.433: E/AndroidRuntime(716): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 09-26 14:04:02.433: E/AndroidRuntime(716): at dalvik.system.NativeStart.main(Native Method) 09-26 14:04:02.433: E/AndroidRuntime(716): Caused by: java.lang.NullPointerException 09-26 14:04:02.433: E/AndroidRuntime(716): at com.example.sample_proj.MainActivity.onCreate(MainActivity.java:21) 09-26 14:04:02.433: E/AndroidRuntime(716): at android.app.Activity.performCreate(Activity.java:5133) 09-26 14:04:02.433: E/AndroidRuntime(716): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 09-26 14:04:02.433: E/AndroidRuntime(716): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175) 09-26 14:04:02.433: E/AndroidRuntime(716): ... 11 more </code></pre> <p>Would someone please help me in understanding why <code>NullPointerException</code> is being thrown and how I can resolve it?</p>
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    1. COPlease post some code. Logcat alone will not help.
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    2. COWhere is the code of your `MainActivity`?
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    3. COPost your MainActivity.java code here.
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