具有以下结构:
<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/nestedScrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<AppGridView
android:id="@+id/appGridView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
我在NestedScrollView里面的AppGridView需要使用onTouchEvent方法来捕获一个动作,但是当它在NestedScrollView里面时,AppGridView的onTouchEvent是:
1) Only called when the is ACTION_DOWN or ACTION_MOVE to left or right
2) When is ACTION_MOVE to top or bottom, it's never called
3) if only ACTION_DOWN or ACTION_DOWN + ACTION_MOVE to the sides, then it calls ACTION_UP
我已经尝试使用这些方法禁用nestedScrollView(在AppGridView类中,在ACTION_DOWN onTouch上调用,然后在ACTION_UP上调用),但不会工作:
private void onTouchStarted() {
nestedScrollView.startNestedScroll(ViewCompat.SCROLL_AXIS_HORIZONTAL| ViewCompat.SCROLL_AXIS_VERTICAL);
}
private void onTouchEnd() {
nestedScrollView.stopNestedScroll();
}
我还需要在活动中插入这个以结束AppGridView正在保存的移动...
nestedScrollView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
appGridView.actionMoveUp();
}
return false;
}
});
有没有办法可以禁用NestedScrollView的滚动?或者可以删除它可以集中的所有方式......
我在google上搜索了很多这个,但是有了“去年”的日期选项,有一次我没有搜索过,发现这篇博文:https://mobiarch.wordpress.com/2013/11/21/prevent-touch-event-theft-in-android/
在此之后,我刚刚改变了
private void onTouchStarted() {
nestedScrollView.startNestedScroll(ViewCompat.SCROLL_AXIS_HORIZONTAL| ViewCompat.SCROLL_AXIS_VERTICAL);
}
private void onTouchEnd() {
nestedScrollView.stopNestedScroll();
}
对此:
private void startTouch() {
nestedScrollView.requestDisallowInterceptTouchEvent(true);
}
private void endTouch() {
nestedScrollView.requestDisallowInterceptTouchEvent(false);
}
它工作得很好