快速滑动，关闭Activity时崩溃

[buyi1987]

java.lang.IllegalArgumentException: You cannot start a load for a destroyed activity 首先加载几页数据，然后快速下滑，RecyclerView还在滚动的时候，按返回按钮关闭Activity，出现崩溃，必现bug。

[buyi1987]

public class MyBGARVOnScrollListener extends BGARVOnScrollListener { private Activity myActivity;

public MyBGARVOnScrollListener(Activity activity) {
	super(activity);
	myActivity=activity;
}

@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
	//super.onScrollStateChanged(recyclerView, newState);
	

// if(myActivity==null){ // return; // }

	if(!GlideUtil.isValidContextForGlide(myActivity)){
		return;
	}
	
	if (newState == RecyclerView.SCROLL_STATE_IDLE) {
		try{
			BGAImage.resume(myActivity);
		}catch (Exception e){
		}
	} else if (newState == RecyclerView.SCROLL_STATE_DRAGGING) {
		BGAImage.pause(myActivity);
	}
	
}

}