can't call void android.view.View.setElevation(float) on null obj in call to CallVoidMethodV

来源：互联网发布：贵阳公安数据铁笼编辑：程序博客网时间：2024/06/07 01:26

哦更新了stuido版本 sdk 也升级了结果demo上得程序运行得时候CoordinatorLayout折叠得时候发生了闪退然后日志就是一大堆

E/art: JNI DETECTED ERROR IN APPLICATION: can't call void android.view.View.setElevation(float) on null object
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     in call to CallVoidMethodV
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     from void android.animation.PropertyValuesHolder.nCallFloatMethod(java.lang.Object, long, float)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art: "main" prio=5 tid=1 Runnable
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:   | group="main" sCount=0 dsCount=0 obj=0x74fb32a0 self=0xf48b6a00
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:   | sysTid=24418 nice=0 cgrp=default sched=0/0 handle=0xf72e6de4
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:   | state=R schedstat=( 3412609692 114173453 1170 ) utm=279 stm=62 core=4 HZ=100
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:   | stack=0xff3db000-0xff3dd000 stackSize=8MB
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:   | held mutexes= "mutator lock"(shared held)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.animation.PropertyValuesHolder.nCallFloatMethod(Native method)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.animation.PropertyValuesHolder.access$400(PropertyValuesHolder.java:37)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.animation.PropertyValuesHolder$FloatPropertyValuesHolder.setAnimatedValue(PropertyValuesHolder.java:1296)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.animation.ObjectAnimator.animateValue(ObjectAnimator.java:981)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.animation.ValueAnimator.animationFrame(ValueAnimator.java:1384)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.animation.ValueAnimator.doAnimationFrame(ValueAnimator.java:1427)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.animation.ValueAnimator$AnimationHandler.doAnimationFrame(ValueAnimator.java:759)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.animation.ValueAnimator$AnimationHandler$1.run(ValueAnimator.java:801)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:896)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.view.Choreographer.doCallbacks(Choreographer.java:698)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.view.Choreographer.doFrame(Choreographer.java:630)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:882)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.os.Handler.handleCallback(Handler.java:815)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.os.Handler.dispatchMessage(Handler.java:104)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.os.Looper.loop(Looper.java:207)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at android.app.ActivityThread.main(ActivityThread.java:5791)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at java.lang.reflect.Method.invoke!(Native method)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901)
12-21 15:06:23.716 24418-24418/com.xgs.financepay E/art:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:762)
12-21 15:06:23.719 24418-24418/com.xgs.financepay E/AEE/LIBAEE: shell: cant create socket with aed: Connection refused
12-21 15:06:23.719 24418-24418/com.xgs.financepay A/art: art/runtime/java_vm_ext.cc:440] JNI DETECTED ERROR IN APPLICATION: can't call void android.view.View.setElevation(float) on null object
12-21 15:06:23.719 24418-24418/com.xgs.financepay A/art: art/runtime/java_vm_ext.cc:440]     in call to CallVoidMethodV
12-21 15:06:23.719 24418-24418/com.xgs.financepay A/art: art/runtime/java_vm_ext.cc:440]     from void android.animation.PropertyValuesHolder.nCallFloatMethod(java.lang.Object, long, float)
12-21 15:06:23.719 24418-24418/com.xgs.financepay A/art: art/runtime/java_vm_ext.cc:440] "main" prio=5 tid=1 Runnable

好吧求助度娘

<android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:stateListAnimator="@null">

It shows warning that android:stateListAnimator="@null" attribute stateListAnimator is only used in API level 21. But I've checked source code of the library and it crashes in theSearchBehavior class when it tries to set mAppBarLayout.setStateListAnimator(null);

所以在

AppBarLayout 里面加上stateListAniimator=“@null”

果然治好了多年的老寒腿不对是这个bug

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