Android：如何在Java中获取Activity的背景颜色？

Question

如何获取Java中活动的背景颜色和文本颜色（子视图的默认值）？

Answer 1

TypedArray array = getTheme().obtainStyledAttributes(new int[] {  
    android.R.attr.colorBackground, 
    android.R.attr.textColorPrimary, 
}); 
int backgroundColor = array.getColor(0, 0xFF00FF); 
int textColor = array.getColor(1, 0xFF00FF); 
array.recycle();

Answer 2

背景

TypedArray array = context.getTheme().obtainStyledAttributes(new int[] {
        android.R.attr.windowBackground});
    int backgroundColor = array.getColor(0, 0xFF00FF);
    array.recycle();
    view.setBackgroundColor(backgroundColor);