Android Settings button Background transparent with translucent _ picture background transparent

button or ImageButton background is set to transparent or translucent translucent <button android:background= "#e0000000" .../>
Transparent <button android:background= "#00000000" .../>

The color and opacity (alpha) values are represented by hexadecimal notation. The range of values for any one color is 0 to 255 (00 to FF). For alpha,00, full transparency is expressed, and FF is completely opaque. The expression order is "Aabbggrr", where "Aa=alpha" (00 to FF), "Bb=blue" (00 to FF), "Gg=green" (00 to FF), "rr=red" (00 to FF). For example, if you want to apply a blue 50% opacity to an overlay, you should specify the following values: 7fff0000

Set background picture transparency (super simple)

Java code

1. View v = Findviewbyid (r.id.content);//Find the ID of the layout you want to set the transparent background
2. V.getbackground (). Setalpha (100);//0~255 Transparency Value

Android Settings button Background transparent with translucent _ picture background transparent