底层 Android- 滚动问题 [英] Bottom Sheet Android- Scrolling issue
问题描述
我需要底页停在两个位置.我有底部工作表的以下代码.
I need the bottom sheet to stop at two positions. I have the following code for Bottom Sheet.
<android.support.design.widget.CoordinatorLayout 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/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
....
</RelativeLayout>
<FrameLayout
android:id="@+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="android.support.design.widget.BottomSheetBehavior">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/white"
android:minHeight="1000dp"
android:orientation="vertical">
....
</LinearLayout>
</ScrollView>
</FrameLayout>
和
View bottomSheet = coordinatorLayout.findViewById(R.id.bottom_sheet);
final BottomSheetBehavior behavior = BottomSheetBehavior.from(bottomSheet);
behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
@Override
public void onStateChanged(@NonNull View bottomSheet, int newState) {
// React to state change
Log.e("onStateChanged", "onStateChanged:" + newState);
if (newState == BottomSheetBehavior.STATE_EXPANDED) {
behavior.setPeekHeight(600);
showAgain.setVisibility(View.GONE);
mMap.getUiSettings().setScrollGesturesEnabled(false);
} else if (newState == BottomSheetBehavior.STATE_COLLAPSED) {
if (behavior.getPeekHeight() == 600) {
behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
behavior.setPeekHeight(80);
mMap.getUiSettings().setScrollGesturesEnabled(false);
} else if (behavior.getPeekHeight() == 80) {
showAgain.setVisibility(View.VISIBLE);
mMap.getUiSettings().setScrollGesturesEnabled(true);
}
}
}
@Override
public void onSlide(@NonNull View bottomSheet, float slideOffset) {
// React to dragging events
Log.e("onSlide", "onSlide " + slideOffset);
}
});
behavior.setPeekHeight(600);
除了一件事之外,这段代码工作正常.第一次我必须向上滚动底部工作表,然后我可以向下滚动它.我无法直接向下滚动工作表.
This code works fine except one thing. The very first time I have to scroll up the bottom sheet and then I can down scroll it. I cannot directly down scroll the sheet.
任何帮助将不胜感激.
推荐答案
你可以使用 NestedScrollView 代替滚动视图使用 CoordinatorLayout 效果更好确保使用 app:layout_behavior="@string/appbar_scrolling_view_behavior" 在 NestedScrollView 中平滑滚动内容
Instead of using scrollview you can use NestedScrollView that works better with CoordinatorLayout make sure to use app:layout_behavior="@string/appbar_scrolling_view_behavior" for smooth scrolling of content inside NestedScrollView
mBottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
@Override
public void onStateChanged(@NonNull View bottomSheet, int newState) {
if (newState == BottomSheetBehavior.STATE_COLLAPSED) {
mBottomSheetBehavior.setPeekHeight(0);
}
}
@Override
public void onSlide(@NonNull View bottomSheet, float slideOffset) {
}
});
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_negetive: {
mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
mBottomSheetBehavior.setPeekHeight(Constants.PEEK_HEIGHT);
mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
break;
}
case R.id.btn_positive: {
//some code
}
}
}
使用此链接,上述解决方案对我有用:https://code.tutsplus.com/articles/how-to-use-bottom-sheets-with-the-design-support-library--cms-26031
the above solution worked for me using this link: https://code.tutsplus.com/articles/how-to-use-bottom-sheets-with-the-design-support-library--cms-26031
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