本文介绍了如何实现固定高度的BottomSheetDialogFragment的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我需要实现 BottomSheetDialogFragment
并面对问题.我需要我的 BottomSheetDialogFragment
具有固定的高度.有人知道怎么做吗?
I need to implement BottomSheetDialogFragment
and face with the problem.I need that my BottomSheetDialogFragment
has fixed height. Does anyone has an idea how to do it?
这是我的 xml 片段内容
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="@dimen/bottom_sheet_height"
android:background="@android:color/white"
android:orientation="vertical">
<TextView
android:id="@+id/drag_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="24sp"
android:textColor="#FF0000"
android:text="Title"/>
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="@android:color/white"
android:layout_weight="1"/>
<TextView
android:id="@+id/ok_button"
android:layout_width="match_parent"
android:layout_height="54dp"
android:background="@android:color/holo_blue_dark"
android:gravity="center"
android:text="Hello"
android:textColor="@android:color/white"
android:textSize="24sp"/>
</LinearLayout>
然后在 setupDialog()
中,我这样做:
@Override
public void setupDialog(Dialog dialog, int style) {
super.setupDialog(dialog, style);
View contentView = View.inflate(getContext(), R.layout.bottom_sheet_dialog_content_view, null);
dialog.setContentView(contentView);
CoordinatorLayout.LayoutParams layoutParams = ((CoordinatorLayout.LayoutParams) ((View) contentView.getParent()).getLayoutParams());
CoordinatorLayout.Behavior behavior = layoutParams.getBehavior();
if (behavior != null && behavior instanceof BottomSheetBehavior) {
((BottomSheetBehavior) behavior).setBottomSheetCallback(bottomSheetCallback);
((BottomSheetBehavior) behavior).setPeekHeight(getResources().getDimensionPixelSize(R.dimen.bottom_sheet_height));
}
initRecyclerView(contentView);
}
行为很普遍:
private BottomSheetBehavior.BottomSheetCallback bottomSheetCallback = new BottomSheetBehavior.BottomSheetCallback() {
@Override
public void onStateChanged(@NonNull View bottomSheet, int newState) {
if (newState == BottomSheetBehavior.STATE_HIDDEN) {
dismiss();
}
}
@Override
public void onSlide(@NonNull View bottomSheet, float slideOffset) {
}
};
UPD::通过将固定高度设置为RecyclerView来解决.有谁知道更好的方法?
UPD: Solved by set the fixed height to RecyclerView. Does anyone know the better approach?
推荐答案
您可以通过创建样式直接给出固定高度.
You can directly give the fix height by Creating it style.
在 styles.xml
<style name="BottomSheetDialog" parent="Theme.Design.Light.BottomSheetDialog">
<item name="bottomSheetStyle">@style/bottomSheetStyleWrapper</item>
</style>
<style name="bottomSheetStyleWrapper" parent="Widget.Design.BottomSheet.Modal">
<item name="behavior_peekHeight">500dp</item>
</style>
更新:
BottomSheetDialog dialog = new BottomSheetDialog(this, R.style.BottomSheetDialog);
dialog.setContentView(R.layout.layout_bottom_sheet);
dialog.show();
或第二种方式:
CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) ((View) contentView.getParent()).getLayoutParams();
CoordinatorLayout.Behavior behavior = params.getBehavior();
if( behavior != null && behavior instanceof BottomSheetBehavior ) {
((BottomSheetBehavior) behavior).setBottomSheetCallback(mBottomSheetBehaviorCallback);
((BottomSheetBehavior) behavior).setPeekHeight(300);
}
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