Android Navigation View transparency

问题

everyone. Is it possible to make Navigation View transparent? I have custom layout and try to set 50% transparent background for this layout, Navigation View or Drawer Layout.

android:background="#80000000"

but it doesn't give expected result.

Anybody tried to do this? I would appreciate help.

回答1:

you can try:

navigationView.getBackground().setAlpha(122);

Here you can set the opacity between 0 (fully transparent) to 255 (completely opaque).

you can also use XML value alpha that takes double values.

The range is from 0f to 1f (inclusive), 0f being transparent and 1f being opaque:

android:alpha="0.0" invisible

android:alpha="0.5" see-through

android:alpha="1.0" full visible

回答2:

If you want transparency with a color try this..

NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
View headerView = navigationView.getHeaderView(0);
------
// you can even change only one from above to and keep the other one normally 
       navigationView.getBackground().setColorFilter(0x80000000, PorterDuff.Mode.MULTIPLY);
       headerView.getBackground().setColorFilter(0x80000000, PorterDuff.Mode.MULTIPLY);

Output:

If you need more deatals about which colour codes you can apply check my answer here

Or if you only want to set alpha use navigationView.getBackground().setAlpha(intNumberTill256);

p.s Nav headder dark colour is due to it's background colour that i have given in its XML

回答3:

To make navigation view completely transparent, this worked for me.

android:background="@android:color/transparent"

回答4:

To make transparent for navigation , please try below code

final Window window = getWindow();
    ObjectAnimator animator = ObjectAnimator.ofInt(window,
            "navigationBarColor", window.getNavigationBarColor(), Color.TRANSPARENT);
    animator.setEvaluator(new ArgbEvaluator());
    animator.setDuration(0);
    animator.start();

来源：https://stackoverflow.com/questions/41674469/android-navigation-view-transparency

标签

android

navigation-drawer

transparency

navigationview