roy dragonborn

how to resolve being crash when switch song.. E/AndroidRuntime: FATAL EXCEPTION: main Process: com.x231.music, PID: 5548 java.lang.IllegalStateException: The application's PagerAdapter changed the adapter's contents without calling PagerAdapter#notifyDataSetChanged! Expected adapter item count: 50, found: 15 Pager id: com.x231.music:id/viewPager_song Pager class: class androidx.viewpager.widget.ViewPager Problematic adapter: class com.x231.music.BaseActivity$ImagePagerAdapter at androidx.viewpager.widget.ViewPager.populate(ViewPager.java:1143) at androidx.viewpager.widget.ViewPager.populate(ViewPager.java:1092) at androidx.viewpager.widget.ViewPager.onMeasure(ViewPager.java:1622) at android.view.View.measure(View.java:19857) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6110) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464) at android.widget.LinearLayout.measureVertical(LinearLayout.java:758) at android.widget.LinearLayout.onMeasure(LinearLayout.java:640) at android.view.View.measure(View.java:19857) at android.widget.RelativeLayout.measureChild(RelativeLayout.java:676) at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:479) at android.view.View.measure(View.java:19857) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6110) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464) at android.widget.LinearLayout.measureVertical(LinearLayout.java:758) at android.widget.LinearLayout.onMeasure(LinearLayout.java:640) at android.view.View.measure(View.java:19857) at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715) at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461) at android.view.View.measure(View.java:19857) at com.sothree.slidinguppanel.SlidingUpPanelLayout.onMeasure(SlidingUpPanelLayout.java:803) at android.view.View.measure(View.java:19857) at androidx.drawerlayout.widget.DrawerLayout.onMeasure(DrawerLayout.java:1119) at android.view.View.measure(View.java:19857) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6110) at android.widget.FrameLayout.onMeasure(FrameLayout.java:185) at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:145) at android.view.View.measure(View.java:19857) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6110) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464) at android.widget.LinearLayout.measureVertical(LinearLayout.java:758) at android.widget.LinearLayout.onMeasure(LinearLayout.java:640) at android.view.View.measure(View.java:19857) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6110) at android.widget.FrameLayout.onMeasure(FrameLayout.java:185) at android.view.View.measure(View.java:19857) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6110) at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1464) at android.widget.LinearLayout.measureVertical(LinearLayout.java:758) at android.widget.LinearLayout.onMeasure(LinearLayout.java:640) at android.view.View.measure(View.java:19857) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6110) at android.widget.FrameLayout.onMeasure(FrameLayout.java:185) at com.android.internal.policy.DecorView.onMeasure(DecorView.java:690) at android.view.View.measure(View.java:19857) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2275) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1366) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1619) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6338) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874) at android.view.Choreographer.doCallbacks(Choreographer.java:686) at android.view.Choreographer.doFrame(Choreographer.java:621) E/AndroidRuntime: at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860) at android.os.Handler.handleCallback(Handler.java:751) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:6145) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:892) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:782) @IKMomin can help me?

android: force closed. when changing play song. web: api url "invalid package", but working.. i think its nulled?

force closed.