How to create transparent activity in android?

问题:

How to create transparent activity in android in that screen tap to dismiss button automatically dismiss the activity. please provide any solution.

回答1:

There are two ways to achieve this

• use the following theme for activity.

android:theme="@android:style/Theme.Translucent"

• Set background of the activity as a trans parent png image or a transparent code

eg.

android:background="@drawable/transparent_bg"

or

android:background="#33BBFFFF"

this is a semi transparent color

Related Links

How to make a background 20% transparent on Android

Understanding colors on Android (six characters)

• To dismiss activity on tap implement onTouchListener and when touch event is detected call finish();

Hope it helps !!

回答2:

Works better with noTitleBar to create a full transparent activity

android:theme="@android:style/Theme.Translucent.NoTitleBar"

and remember extends your activity from Activity and not from AppCompactActivity

If you need to use AppCompact then declare a new theme:

<style name="Theme.AppCompat.Translucent" parent="Theme.AppCompat.NoActionBar">
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:colorBackgroundCacheHint">@null</item>
    <item name="android:windowIsTranslucent">true</item>
    <item name="android:windowAnimationStyle">@android:style/Animation</item>
</style>