Android 具有自定义对象重新排序的数组列表

我有一个

ArrayList

在媒体项中有一个

Boolean

字段名为isdownload

我想要一个循环，它可以按isdownload字段从true到false对项目进行排序

试试下面的内容

int ff = 0; // First false index
  CustomObject pf = list.get(0); // photo with false

for (int i = 0; i < list.size(); i++)
  {
    CustomObject p = list.get(i);
    if (p. IsDownloaded())
    {
      // Replace it with the current photo with false
      list.set(i, pf);
      // Put the selected photo in place of the first false photo (and move this index)
      list.set(ff++, p);
      // Next photo is the next to swap (might also advance ff up to the next unselected photo)
      pf = list.get(ff);
    }
  }



for (CustomObject p : list) {
    println(p.selected + "," + p.index);
  }

int ff=0；//第一假索引
CustomObject pf=list.get（0）；//假照片
对于（int i=0；i

在做任何事情之前，请先阅读：谢谢，它成功了。