Change the size of ImageView on zooming

Question

I am using chrisbanes PhotoView to implement pinch zoom..Image zooms on pinching and double tapping but i can\'t see that my image streched to full screen on zooming..on zooming

Answer 1

I use imageviewtouch and have same problem. To solve it you can wrap imageview inside layout without any other children. Example :

<LinearLayout
android:id="@+id/layout"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_marginBottom="200dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/toplayout">

    <com.android.volley.toolbox.NetworkImageView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:scaleType="fitCenter"
    android:background="@android:color/transparent"
    android:id="@+id/imageitem"/>
</LinearLayout>

Answer 2

It is because the ImageView has a view height of "wrap_content". Change it to "match_parent" and set the scaleType of the image to be "centerInside" to fix your problem.