UI 未在某些设备上更新

Question

I have an app which has SlidingPaneLayout on the left (hidden by default) and main layout on the visible part of the screen. UI elements, such as TextView s, icons (using vectors ) and SeekBar are displayed in this main layout and are updated based on user interactions. Layout is created using ConstraintLayout .

<com....SlidingPaneLayout
    layout_width="match_parent"
    layout_height="match_parent">

    <android.support.constraint.ConstraintLayout
        android:id="@+id/left_panel"
        layout_width="200dp"
        layout_height="match_parent">
        ...
    </android.support.constraint.ConstraintLayout>

    <android.support.constraint.ConstraintLayout
        android:id="@+id/main_layout"
        layout_width="match_parent"
        layout_height="match_parent">
       ...
        <ImageView
        android:id="@+id/iv_example_icon"
        app:srcCompat="@drawable/ic_icon" />
       ...
    </android.support.constraint.ConstraintLayout>

</com....SlidingPaneLayout>

There's nothing strange in this layout. Components are updating using methods like setText , setImageResource etc, called from the main thread. The problem is, on some devices (last occurence on Samsung J3, Android 5.1.1), these methods are not working (it works on thousands of other devices). Element is clicked, but content is not updated (eg changing icon when user touches the icon). It is updated only after SlidingPane is displayed (swiped from the left), or activity is resumed. Does anybody know what can prevent app from updating those elements? It worked well before new update. New update brought: ConstraintLayout , png background, vector icons.

Thanks.

Answer 1

Found out the problem. Setting fade color from semi-transparent to transparent solved the issue.

this.setSliderFadeColor(ContextCompat.getColor(context, android.R.color.transparent));

However I still do not know reason of this.