如何動態設置相對佈局背景圖片？

Question

如何動態設置相對佈局背景？ 我在頂部的相對佈局，不能設置ID

Answer 1

假設你有一個ID爲relativeLayout的相對佈局。您可以通過設置背景：

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); 

Answer 2

嘗試此Xamarin.Android（跨平臺）

的RelativeLayout的RelativeLayout =新的RelativeLayout（本）;
或
RelativeLayout relativeLayout =（RelativeLayout）FindViewById（Resource.Id.relativeLayout）;

relativeLayout.SetBackgroundDrawable（Resources.GetDrawable（Resource.Drawable.imageName））;