set transparent background android code example

Example 1: how to make background image transparent in android studio

android:backgroundTint="#80FFFFFF"
android:backgroundTintMode="src_over"
>>for setting background as transparent in android studio(only bg)
android:alpha="0.4"
>>for all views

Example 2: android java transparent background

100% — FF
95% — F2
90% — E6
85% — D9
80% — CC
75% — BF
70% — B3
65% — A6
60%99
55%8C
50%80
45%73
40%66
35%59
30%4D
25%40
20%33
15%26
10%1A
5%0D
0%00

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Java Example