给动态生成的View添加水波纹效果

xml里：

android:background="?android:attr/selectableItemBackground"

Java代码里：

int[] attrs =new int[]{R.attr.selectableItemBackground};

TypedArray typedArray =getContext().obtainStyledAttributes(attrs);

int backgroundResource =typedArray.getResourceId(0, 0);

view.setBackgroundResource(backgroundResource);

typedArray.recycle();