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POApp force closes after splash screen on testing
primarykey
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6586939
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AcceptedAnswerId
0
AnswerCount
3
ClosedDate
CommentCount
5
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CreationDate
2011-07-05T18:07:40.003
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2011-07-05T19:47:23.003
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2011-07-05T19:47:23.003
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Body
<pre><code>package com.ave; import com.ave.R; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.ImageButton; public class Menu extends Activity{ ImageButton select; int isClicked = 0; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.main); select = (ImageButton)findViewById(R.id.select); select.setOnClickListener(new OnClickListener() { public void onClick(View v) { if (isClicked == 0){ select.setImageResource(R.drawable.select_pressed); isClicked = 1; } else{ select.setImageResource(R.drawable.select); isClicked = 0; } }}); } ImageButton audio; int isClicked1 = 0;{ audio = (ImageButton)findViewById(R.id.audio); audio.setOnClickListener(new OnClickListener() { public void onClick(View v) { if (isClicked1 == 0){ audio.setImageResource(R.drawable.audio_pressed); isClicked1 = 1; } else{ audio.setImageResource(R.drawable.audio); isClicked1 = 0; } } }); } } </code></pre> <p>============LogCat=================</p> <pre><code>E AndroidRuntime: FATAL EXCEPTION: main E AndroidRuntime: java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.ave/com.ave.Menu}: java.lang.NullPointerException E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1618) E AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1716) E AndroidRuntime: at android.app.ActivityThread.access$1500(ActivityThread.java:124) E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:968) E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99) E AndroidRuntime: at android.os.Looper.loop(Looper.java:123) E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:3806) E AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method) E AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:507) E AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) E AndroidRuntime: at dalvik.system.NativeStart.main(Native Method) E AndroidRuntime: Caused by: java.lang.NullPointerException E AndroidRuntime: at android.app.Activity.findViewById(Activity.java:1693) E AndroidRuntime: at com.ave.Menu.(Menu.java:41) E AndroidRuntime: at java.lang.Class.newInstanceImpl(Native Method) E AndroidRuntime: at java.lang.Class.newInstance(Class.java:1409) E AndroidRuntime: at android.app.Instrumentation.newActivity(Instrumentation.java:1021) E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1610) E AndroidRuntime: ... 11 more </code></pre> <p>I have no errors within xml or class and everything is referenced properly but when i try to test the app through AVD or my phone it force stops after the splash screen. And produces what you see in the LogCat. Again no errors in the xml or classes and everything is referenced. So what am i doing wrong? Or what needs to be added. It all stopped working after adding the second imageButton method, but if i remove it. It works fine.</p> <pre><code> <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/droid_background"> <TextView android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="center_horizontal" android:text="@string/hello" android:textColor="#FFFFFF" android:textStyle="bold"/> <ImageButton android:src="@drawable/select" android:id="@+id/select" android:layout_height="30dp" android:layout_width="120dp" android:background="@null" android:layout_alignParentLeft="true" android:layout_alignParentBottom="true"/> <ImageButton android:src="@drawable/audio" android:id="@+id/audio" android:layout_height="30dp" android:layout_width="120dp" android:background="@null" android:layout_alignParentRight="true" android:layout_alignParentBottom="true"/> </RelativeLayout>' </code></pre>
Tags
<java><android><xml>
Title
App force closes after splash screen on testing
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