问题
How to disable BottomSheetDialogFragment
dragging by finger?
I saw similar questions, but they're all about BottomSheet
not BottomSheetDialogFragment
.
回答1:
Having created MyActivity
as follows:
public class MyActivity extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
new MyBottomSheetFragment().show(getSupportFragmentManager(), "tag");
}
public static class MyBottomSheetFragment extends BottomSheetDialogFragment {
@Override
public void setupDialog(Dialog dialog, int style) {
BottomSheetDialog bottomSheetDialog = (BottomSheetDialog) dialog;
bottomSheetDialog.setContentView(R.layout.sample);
try {
Field behaviorField = bottomSheetDialog.getClass().getDeclaredField("behavior");
behaviorField.setAccessible(true);
final BottomSheetBehavior behavior = (BottomSheetBehavior) behaviorField.get(bottomSheetDialog);
behavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
@Override
public void onStateChanged(@NonNull View bottomSheet, int newState) {
if (newState == BottomSheetBehavior.STATE_DRAGGING{
behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
}
}
@Override
public void onSlide(@NonNull View bottomSheet, float slideOffset) {
}
});
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
}
}
Where R.layout.sample
is a simple layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<View
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#e479da" />
<View
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#798de4" />
<View
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#e4db79" />
</LinearLayout>
You'll get following output:
A part of solution is borrowed from this answer.
回答2:
If you want to disable BottomSheetDialog
dragging, try to set setCancelable(false)
.
回答3:
This is the Kotlin version of azizbekian's answer since someone asked about using data binding
@SuppressLint("RestrictedApi")
override fun setupDialog(d: Dialog?, style: Int) {
super.setupDialog(d, style)
dialogExampleBinding = DataBindingUtil
.inflate(LayoutInflater.from(context), R.layout.dialogExample, null, false) //This is for data binding only
d?.setContentView(R.layout.dialogExample)
val myDialog:BottomSheetDialog = d as BottomSheetDialog
val dField = myDialog.javaClass.getDeclaredField("behavior") //This is the correct name of the variable in the BottomSheetDialog class
dField.isAccessible = true
val behavior = dField.get(d) as BottomSheetBehavior<*>
behavior.setBottomSheetCallback(object : BottomSheetBehavior.BottomSheetCallback() {
override fun onStateChanged(bottomSheet: View, newState: Int) {
if (newState == BottomSheetBehavior.STATE_DRAGGING) {
behavior.state = BottomSheetBehavior.STATE_EXPANDED
}
}
override fun onSlide(bottomSheet: View, slideOffset: Float) {}
})
}
回答4:
My version. It works perfectly.
class FragMenuBDrawer : BottomSheetDialogFragment() {
...
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
val dialog = super.onCreateDialog(savedInstanceState) as BottomSheetDialog
dialog.setOnShowListener {
val bottomSheet = (it as BottomSheetDialog).findViewById<View>(com.google.android.material.R.id.design_bottom_sheet) as FrameLayout?
val behavior = BottomSheetBehavior.from(bottomSheet!!)
behavior.state = BottomSheetBehavior.STATE_EXPANDED
behavior.setBottomSheetCallback(object : BottomSheetBehavior.BottomSheetCallback() {
override fun onStateChanged(bottomSheet: View, newState: Int) {
if (newState == BottomSheetBehavior.STATE_DRAGGING) {
behavior.state = BottomSheetBehavior.STATE_EXPANDED
}
}
override fun onSlide(bottomSheet: View, slideOffset: Float) {}
})
}
// Do something with your dialog like setContentView() or whatever
return dialog
}
...
}
回答5:
Just Add bottomSheetBehavior.setHideable(false);
You can get Object of BottomshitBehaviour in BottomshitDialogFragment.
CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) ((View) view.getParent()).getLayoutParams();
CoordinatorLayout.Behavior behavior = params.getBehavior();
View parent = (View) view.getParent();
getHeight(view);
((BottomSheetBehavior) behavior).setFitToContents(true);
BottomSheetBehavior bottomSheetBehavior = BottomSheetBehavior.from(parent);
bottomSheetBehavior.setHideable(false);
来源:https://stackoverflow.com/questions/46861306/how-to-disable-bottomsheetdialogfragment-dragging