Android RecyclerView 滑動時圖片加載的優化

RecyclerView 滑動時的優化處理

在滑動時停止加載圖片，在滑動停止時開始加載圖片，這里用了Glide.pause 和Glide.resume.這里為了避免重復設置增加開銷，設置了一個標志變量來做判斷。

mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
    super.onScrollStateChanged(recyclerView, newState);
    if (newState == RecyclerView.SCROLL_STATE_DRAGGING || newState == RecyclerView.SCROLL_STATE_SETTLING) {
        sIsScrolling = true;
        Glide.with(VipMasterActivity.this).pauseRequests();
    } else if (newState == RecyclerView.SCROLL_STATE_IDLE) {
        if (sIsScrolling == true) {
            Glide.with(VipMasterActivity.this).resumeRequests();
        }
        sIsScrolling = false;
    }
}

@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
    super.onScrolled(recyclerView, dx, dy);
  }
});