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  1. POAndroid app crashes when the .xml file for animation is being called
    text
    copied!<p>I have this simple .xml file called "fadein.xml" to animate an image...</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;set xmlns:android="http://schemas.android.com/apk/res/android" android:shareInterpolator="false"&gt; &lt;alpha android:fromAlpha="0.0" android:toAlpha="1.0" duration="2000"/&gt; &lt;/set&gt; </code></pre> <p>And here is how I am referring to this animation file from my main java class...</p> <pre><code> ImageView logo; Animation myFadeInAnimation; logo = (ImageView) findViewById(R.id.logoImage); myFadeInAnimation = AnimationUtils.loadAnimation(this, R.anim.fadein); logo.startAnimation(myFadeInAnimation); </code></pre> <p>However my app crashes every time this part is supposed to run....can anyone suggest what I am doing wrong here? Thanks in advance!</p> <p><em><strong>EDIT</em></strong></p> <p>here is the logcat log....</p> <pre><code>11-03 22:26:37.579: ERROR/AndroidRuntime(1558): FATAL EXCEPTION: main 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.helloandroid2/com.example.helloandroid2.SplashScreen}: java.lang.NullPointerException 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1815) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1831) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at android.app.ActivityThread.access$500(ActivityThread.java:122) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1024) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at android.os.Handler.dispatchMessage(Handler.java:99) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at android.os.Looper.loop(Looper.java:132) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at android.app.ActivityThread.main(ActivityThread.java:4123) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at java.lang.reflect.Method.invokeNative(Native Method) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at java.lang.reflect.Method.invoke(Method.java:491) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at dalvik.system.NativeStart.main(Native Method) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): Caused by: java.lang.NullPointerException 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at com.example.helloandroid2.SplashScreen.onCreate(SplashScreen.java:28) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at android.app.Activity.performCreate(Activity.java:4397) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1779) 11-03 22:26:37.579: ERROR/AndroidRuntime(1558): ... 11 more </code></pre>
 

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