Java tutorial
//package com.java2s; import android.annotation.TargetApi; import android.graphics.Bitmap; import android.os.Build; public class Main { @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR1) private static void setAlphaIfAvailable(Bitmap bitmap, boolean hasAlpha) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1 && bitmap != null) { bitmap.setHasAlpha(hasAlpha); } } }