PhotoViewAttacher.getScaleType()' on a null object reference

[kelinZhou]

my app use ViewPager2 + PhotoView + Glide, to see a few picture, the app crash.
version 1.3.1

java.lang.NullPointerException: Attempt to invoke virtual method 'android.widget.ImageView$ScaleType uk.co.senab.photoview.PhotoViewAttacher.getScaleType()' on a null object reference
at uk.co.senab.photoview.PhotoView.getScaleType(PhotoView.java:115)
at com.bumptech.glide.RequestBuilder.into(RequestBuilder.java:680)

[kelinZhou]

And the touch event for ViewPager2 still works during scaling.

[kelinZhou]

Issues：The touch event for ViewPager2 still works during scaling.

You can call parent.requestDisallowInterceptTouchEvent(true) method when MotionEvent.getPointerCount() > 1.

[TonyNikolov]

@kelinZhou where exactly do you make this check?

[PontonMao]

<---?xml version="1.0" encoding="utf-8"?-->

<---LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:gravity="center">

<com.github.chrisbanes.photoview.PhotoView
    android:id="@+id/pvPhotoView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

<--/LinearLayout-->

try this...

[Lupin-Appsynth]

I'm using this approach with waiting for an image view display by the GlobalLayout listener to solve this issue.

Thanks!!