DialogFragment with clear background (not dimmed)

问题:

I'm trying to get the background of a DialogFragment to be completely clear.

With setting the style item android:windowIsFloating to true (the default), the DialogFragment displays exactly how I want it to, but has a very dimmed background.

By setting android:windowIsFloating to false, I get the clear background I want, but the DialogFragment blows up to about 95% of the screen, leaving only a tiny gap around it where you can see through to the view it overlays.

I've tried ton's of tweaks and cannot seem to override this behavior.

Do I need to use a PopupWindow to achieve the desired effects, or are there some style items that I can override ?

回答1:

What works for me is to adjust the WinowManager.LayoutParams in onStart() of the DialogFragment:

@Override public void onStart() {     super.onStart();      Window window = getDialog().getWindow();     WindowManager.LayoutParams windowParams = window.getAttributes();     windowParams.dimAmount = 0.90f;     windowParams.flags |= WindowManager.LayoutParams.FLAG_DIM_BEHIND;     window.setAttributes(windowParams); } 

回答2:

You need to get a handle to your DialogFrament (sometime after .show is called), and do this in a Posted Runnable:

DialogFragment dialog;  ...  WindowManagerLayoutParams wlp = dialog.Dialog.Window.Attributes; wlp.Flags &= ~WindowManagerFlags.DimBehind; dialog.Dialog.Window.Attributes = wlp; 

I got it from Aleks G's answer to Changing position of the Dialog on screen android .

回答3:

Even a simpler solution is to change the style in the onCreate of the DialogFragment:

@Override public void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     setStyle(STYLE_NO_FRAME, getTheme()); } 

回答4:

Create your own Customized dialog extends with FragmentDailog and override this method

@Override public Dialog onCreateDialog(Bundle savedInstanceState) {     Dialog dialog = super.onCreateDialog(savedInstanceState);      //set the dialog to non-modal and disable dim out fragment behind     Window window = dialog.getWindow();     window.setFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,             WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL);     window.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);     return dialog; } 

NOTE: This answer works for me in case of DialogFragment and BottomSheetDialogFragment

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