如何动态设置相对布局背景图像？

Question

如何动态设置相对布局背景？我的相对布局在顶部,无法设置id

Answer 1

假设您有ID的相对布局relativeLayout.您可以使用以下方法设置背景:

RelativeLayout rLayout = (RelativeLayout) findViewById(R.id.relativeLayout);
Resources res = getResources(); //resource handle
Drawable drawable = res.getDrawable(R.drawable.newImage); //new Image that was added to the res folder

rLayout.setBackgroundDrawable(drawable);