我有以下测试底部表单实现。当我将peekHeight设置为小于500的值时，它可以工作。但是在某个值之后，无论增加多少peek高度都不会改变底部表单的扩展方式，只能手动拖动。如何以编程方式设置peekHeight，以确保底部表单自动扩展到peek高度。
bottom_sheet_dialog_main
bottom_sheet_dialog_main<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/locUXCoordinatorLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="@+id/locUXView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:orientation="vertical"
app:behavior_hideable="false"
app:behavior_peekHeight="0dp"
app:layout_behavior="@string/bottom_sheet_behavior">
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="1 Value" />
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="2 Value" />
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="3 Value" />
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="4 Value" />
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="5 Value" />
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="6 Value" />
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="7 Value" />
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="8 Value" />
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="9 Value" />
<TextView
android:layout_width="match_parent"
android:layout_height="100dp"
android:text="First Value" />
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
Java代码
public class MyBottomSheetDialogFragment extends BottomSheetDialogFragment {
private static BottomSheetBehavior bottomSheetBehavior;
private static View bottomSheetInternal;
private static MyBottomSheetDialogFragment INSTANCE;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
getDialog().setOnShowListener(new DialogInterface.OnShowListener() {
@Override
public void onShow(DialogInterface dialog) {
BottomSheetDialog d = (BottomSheetDialog) dialog;
CoordinatorLayout coordinatorLayout = (CoordinatorLayout)d.findViewById(R.id.locUXCoordinatorLayout);
bottomSheetInternal = d.findViewById(R.id.locUXView);
bottomSheetBehavior = BottomSheetBehavior.from(bottomSheetInternal);
bottomSheetBehavior.setPeekHeight(bottomSheetInternal.getHeight());
bottomSheetInternal.requestLayout();
coordinatorLayout.getLayoutParams().height = bottomSheetInternal.getHeight();
Toast.makeText(getActivity(), "Height is" + bottomSheetInternal.getHeight() + " " + coordinatorLayout.getLayoutParams().height, Toast.LENGTH_LONG).show();
}
});
INSTANCE = this;
return inflater.inflate(R.layout.bottom_sheet_dialog_main, container, false);
}
}