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Merge "Implemented nested scrolling parent in TextReadingPreviewPager" into main

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Treehugger Robot
2024-01-09 01:16:08 +00:00
committed by Android (Google) Code Review
parent 901a3bf4b6 ed3d2f9171
commit a5e48292a7
2 changed files with 23 additions and 10 deletions
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3
res/layout/accessibility_text_reading_preview.xml
View File

@@ -42,7 +42,8 @@
android:id="@+id/preview_pager"
android:layout_width="match_parent"
android:layout_height="217dp"
android:contentDescription="@string/preview_pager_content_description" />
android:contentDescription="@string/preview_pager_content_description"
android:nestedScrollingEnabled="true" />
<com.android.settings.widget.DotsPageIndicator
android:id="@+id/page_indicator"

30
src/com/android/settings/accessibility/TextReadingPreviewPager.java
View File

@@ -18,8 +18,7 @@ package com.android.settings.accessibility;
import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.ViewGroup;
import android.view.View;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
@@ -29,18 +28,31 @@ import androidx.viewpager.widget.ViewPager;
* The view pager is used for displaying screen preview with different size configuration changes.
*/
public class TextReadingPreviewPager extends ViewPager {
public TextReadingPreviewPager(@NonNull Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
final ViewGroup parent = (ViewGroup) getParent();
if (parent != null) {
// Avoid conflicting with the nested scroll view.
parent.requestDisallowInterceptTouchEvent(true);
}
public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) {
return (nestedScrollAxes & View.SCROLL_AXIS_VERTICAL) != 0;
}
return super.onInterceptTouchEvent(ev);
@Override
public void onNestedScrollAccepted(View child, View target, int axes) {
super.onNestedScrollAccepted(child, target, axes);
// Allow the nested scrollview inside of the view pager to be scrollable.
getParent().requestDisallowInterceptTouchEvent(true);
}
@Override
public void onNestedScroll(
View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
if (dyUnconsumed != 0) {
// Assume dyUnconsumed != 0 means the target has been scrolled to the end vertically.
// We could let the parent to consume the rest of the dyUnconsumed
getParent().requestDisallowInterceptTouchEvent(false);
}
super.onNestedScroll(target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
}
}