在 Recyclerview 的情況下，listview.getCount 的等價物是什么

Question

我已經使用了listview.getCount()在Recyclerview情況下如何獲得計數

id = receiver + "-" + splashList.getCount();

適配器中的自定義方法：

public void setImage(String my_image, String r_image) {
    byte[] decodedrimage = Base64.decode(r_image, Base64.DEFAULT);
    Bitmap decodedrByte = BitmapFactory.decodeByteArray(decodedrimage, 0,
            decodedrimage.length);
    if (my_image.equals("empty")) {
        imgflag = 1;
    } else {
        byte[] decodedmyimage = Base64.decode(my_image, Base64.DEFAULT);
        Bitmap decodedmyByte = BitmapFactory.decodeByteArray(
                decodedmyimage, 0, decodedmyimage.length);
        rimage = createCirclebitmap(decodedrByte);
        myimage = createCirclebitmap(decodedmyByte);
    }

}

並在另一個類中調用該方法：

CustomListAdapter1 mAdapter ;
mAdapter = new CustomListAdapter1(NewUI.this, dummy,
                imgpath, bitmap, id, dateList);
mAdapter.setImage(myimage, rimage);

Answer 1

沒有等價物。 RecyclerView對底層數據集沒有直接的了解。 最接近的是

int count = 0;
if (recyclerViewInstance.getAdapter() != null) {
     count = recyclerViewInstance.getAdapter().getItemCount();
}

或者如果您有對適配器的引用，只需調用

  int count = 0;
  if (mAdapter != null) {
     count = mAdapter.getItemCount();
  }

Answer 2

//use this method to return recycler adapter item count..
private int recyclerCount(){
 int Count = 0;
  if (mAdapter != null) {
     count = mAdapter.getItemCount();
  }
return count;
}