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POAndroid: NullPointerException happened in DrawableContainer$DrawableContainerState.addChild
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2013-12-26T12:36:45.633
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First, this crash happened only few times, randomly. And from the crash log, it should not a OOM problem for i cannot see any clue about "OutOfMemoryError". Neither it is resource not found because it should throw Resources$NotFoundException. The crashlog is as below (the root exception) <pre><code>java.lang.NullPointerException at android.graphics.drawable.DrawableContainer$DrawableContainerState.addChild(DrawableContainer.java:349) at android.graphics.drawable.StateListDrawable$StateListState.addStateSet(StateListDrawable.java:265) at android.graphics.drawable.StateListDrawable.inflate(StateListDrawable.java:173) at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:796) at android.graphics.drawable.Drawable.createFromXml(Drawable.java:737) at android.content.res.Resources.loadDrawable(Resources.java:1722) at android.content.res.TypedArray.getDrawable(TypedArray.java:601) at android.view.View.<init>(View.java:1885) at android.view.View.<init>(View.java:1834) at java.lang.reflect.Constructor.constructNative(Native Method) at java.lang.reflect.Constructor.newInstance(Constructor.java:446) at android.view.LayoutInflater.createView(LayoutInflater.java:500) at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563) at android.view.LayoutInflater.rInflate(LayoutInflater.java:618) at android.view.LayoutInflater.rInflate(LayoutInflater.java:621) at android.view.LayoutInflater.parseInclude(LayoutInflater.java:702) at android.view.LayoutInflater.rInflate(LayoutInflater.java:614) at android.view.LayoutInflater.rInflate(LayoutInflater.java:621) at android.view.LayoutInflater.rInflate(LayoutInflater.java:621) at android.view.LayoutInflater.inflate(LayoutInflater.java:407) at android.view.LayoutInflater.inflate(LayoutInflater.java:320) at android.view.LayoutInflater.inflate(LayoutInflater.java:276) at bes.a(VideoDetailFragement.java:332) at android.support.v4.app.Fragment.b(Fragment.java:1460) at u.a(FragmentManager.java:911) at u.a(FragmentManager.java:1088) at h.run(BackStackRecord.java:682) at u.e(FragmentManager.java:1444) at n.onStart(FragmentActivity.java:551) at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1129) at android.app.Activity.performStart(Activity.java:3800) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2710) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2753) at android.app.ActivityThread.access$2500(ActivityThread.java:129) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2107) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:143) at android.app.ActivityThread.main(ActivityThread.java:4701) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) at dalvik.system.NativeStart.main(Native Method) </code></pre> I checked the layout file, and I'm sure the drawables are right there, while only in xhdpi folder. From the following link <a href="https://stackoverflow.com/questions/15394499/resouce-not-found-but-its-in-its-place">resouce not found but it's in its place</a> It gives the resolution that <blockquote> In my application I solved my problem by making the copies of the drawables in all the folders of the drawables i.e. drawable-ldpi, drawable-mdpi, drawable-hdpi, drawable-xhdpi </blockquote> I didn't try, but, if so, then why? From the <a href="https://developer.android.com/guide/topics/resources/providing-resources.html" rel="nofollow noreferrer">Android doc</a>, it says <blockquote> Screen pixel density is the one qualifier that is not eliminated due to a contradiction. Even though the screen density of the device is hdpi, drawable-port-ldpi/ is not eliminated because every screen density is considered to be a match at this point </blockquote> So in my opinion, in a low dpi device, it should find a drawable from the xhdpi one and scale it down to a appropriate size. So i dont know why it sometimes throws such exception. -------------------------------------UPDATE-------------------------- As request, i post the another layout file and the crash log, which also the same problem.. XML file: <pre><code><?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/advert_view" android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="center_horizontal" > <ImageView android:id="@+id/advert_img" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_gravity="center_horizontal" android:scaleType="fitXY" /> <RelativeLayout android:id="@+id/advert_close" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignRight="@id/advert_img" android:layout_alignTop="@id/advert_img" android:paddingBottom="9dp" android:paddingLeft="9dp" android:paddingRight="9dp" android:paddingTop="9dp" android:visibility="gone" > <ImageView android:id="@+id/advert_close_img" android:layout_width="24dp" android:layout_height="24dp" android:src="@drawable/advert_close" /> </RelativeLayout> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignBottom="@id/advert_img" android:layout_alignLeft="@id/advert_img" android:paddingBottom="38dp" android:paddingLeft="53dp" > <ImageView android:id="@+id/advert_goto" android:layout_width="75dp" android:layout_height="26dp" android:background="@drawable/advert_goto_bt_selector" android:visibility="gone" /> </RelativeLayout> </RelativeLayout> </code></pre> the drawable advert_goto_bt_selector is <pre><code><?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_pressed="true" android:drawable="@drawable/advert_goto_btn_press" /> <item android:drawable="@drawable/advert_goto_btn" /> </selector> </code></pre> I am quite sure the advert_goto_btn_press.png and advert_goto_btn.png， advert_close exist in the xhdpi in the apk file Crash log <pre><code>java.lang.NullPointerException at android.graphics.drawable.DrawableContainer$DrawableContainerState.addChild(DrawableContainer.java:349) at android.graphics.drawable.StateListDrawable$StateListState.addStateSet(StateListDrawable.java:265) at android.graphics.drawable.StateListDrawable.inflate(StateListDrawable.java:173) at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:796) at android.graphics.drawable.Drawable.createFromXml(Drawable.java:737) at android.content.res.Resources.loadDrawable(Resources.java:1722) at android.content.res.TypedArray.getDrawable(TypedArray.java:601) at android.view.View.<init>(View.java:1885) at android.widget.ImageView.<init>(ImageView.java:176) at android.widget.ImageView.<init>(ImageView.java:172) at java.lang.reflect.Constructor.constructNative(Native Method) at java.lang.reflect.Constructor.newInstance(Constructor.java:446) at android.view.LayoutInflater.createView(LayoutInflater.java:500) at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563) at android.view.LayoutInflater.rInflate(LayoutInflater.java:618) at android.view.LayoutInflater.rInflate(LayoutInflater.java:621) at android.view.LayoutInflater.inflate(LayoutInflater.java:407) at android.view.LayoutInflater.inflate(LayoutInflater.java:320) at com.xxxx.video.ui.widget.AdvertView.a(AdvertView.java:111) at com.xxxx.video.ui.widget.AdvertView.<init>(AdvertView.java:89) at java.lang.reflect.Constructor.constructNative(Native Method) at java.lang.reflect.Constructor.newInstance(Constructor.java:446) at android.view.LayoutInflater.createView(LayoutInflater.java:500) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565) at android.view.LayoutInflater.rInflate(LayoutInflater.java:618) at android.view.LayoutInflater.inflate(LayoutInflater.java:407) at android.view.LayoutInflater.inflate(LayoutInflater.java:320) at android.view.LayoutInflater.inflate(LayoutInflater.java:276) at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:203) at android.app.Activity.setContentView(Activity.java:1666) at com.xxxx.video.player.PlayerActivity.onCreate(PlayerActivity.java:236) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2701) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2753) at android.app.ActivityThread.access$2500(ActivityThread.java:129) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2107) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:143) at android.app.ActivityThread.main(ActivityThread.java:4701) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) at dalvik.system.NativeStart.main(Native Method) </code></pre> the Java code is quite simple, it is inflating the layout file.
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Android: NullPointerException happened in DrawableContainer$DrawableContainerState.addChild
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