安卓4.4报错，4.4以上没有问题

[anzhuojinjie]

java.lang.NullPointerException
    at android.support.v4.view.ViewPager.draw(ViewPager.java:2450)
    at com.joey.loanmarket.widget.YViewPager.draw(YViewPager.java:3446)
    at android.view.View.getDisplayList(View.java:13362)
    at android.view.View.getDisplayList(View.java:13404)
    at android.view.View.draw(View.java:14182)
    at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
    at android.view.View.getDisplayList(View.java:13357)
    at android.view.View.getDisplayList(View.java:13404)
    at android.view.View.draw(View.java:14182)
    at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
    at android.view.View.draw(View.java:14468)
    at android.widget.FrameLayout.draw(FrameLayout.java:472)
    at android.view.View.getDisplayList(View.java:13362)
    at android.view.View.getDisplayList(View.java:13404)
    at android.view.View.draw(View.java:14182)
    at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
    at android.view.View.getDisplayList(View.java:13357)
    at android.view.View.getDisplayList(View.java:13404)
    at android.view.View.draw(View.java:14182)
    at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
    at android.view.View.draw(View.java:14468)
    at android.widget.FrameLayout.draw(FrameLayout.java:472)
    at android.view.View.getDisplayList(View.java:13362)
    at android.view.View.getDisplayList(View.java:13404)
    at android.view.View.draw(View.java:14182)
    at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
    at android.view.View.getDisplayList(View.java:13357)
    at android.view.View.getDisplayList(View.java:13404)
    at android.view.View.draw(View.java:14182)
    at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
    at android.view.View.getDisplayList(View.java:13357)
    at android.view.View.getDisplayList(View.java:13404)
    at android.view.View.draw(View.java:14182)
    at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
    at android.view.View.getDisplayList(View.java:13357)
    at android.view.View.getDisplayList(View.java:13404)
    at android.view.View.draw(View.java:14182)
    at android.view.ViewGroup.drawChild(ViewGroup.java:3103)
    at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2940)
    at android.view.View.draw(View.java:14468)
    at android.widget.FrameLayout.draw(FrameLayout.java:472)
    at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2326)
    at android.view.View.getDisplayList(View.java:13362)
    at android.view.View.getDisplayList(View.java:13404)
    at android.view.HardwareRenderer$GlRenderer.buildDisplayList(HardwareRenderer.java:1569)
    at android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java:1448)
    at android.view.ViewRootImpl.draw(ViewRootImpl.java:2381)
    at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2253)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1883)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1000)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5670)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
    at android.view.Choreographer.doCallbacks(Choreographer.java:574)
    at android.view.Choreographer.doFrame(Choreographer.java:544)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
    at android.os.Handler.handleCallback(Handler.java:733)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:136)
    at android.app.ActivityThread.main(ActivityThread.java:5017)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:515)
    at com.android.internal.os.ZygoteInit$M

[youngkaaa]

使用官方的ViewPager2吧，或者自己用RecyclerView实现

[anzhuojinjie]

使用官方的ViewPager2吧，或者自己用RecyclerView实现

感谢回复，刚知道官方出了ViewPager2