有这样的代码:
case R.id.button:
int id=randImage();
imgView1.setImageResource(id);
public int randImage() {
Random rand= new Random();
int randomNumber=rand.nextInt(24)+1;
String randomImage="img"+randomNumber;
int id = getResources().getIdentifier(randomImage, "drawable", getPackageName());
return id;
}
case R.id.imgView1:
Intent i= new Intent();
i.putExtra("imgId", id); //IS UNREACHABLE
如何在设置后获得可绘制ID?
答案 0 :(得分:1)
不确定您是否可以在设置后恢复它,但您可以将标记与组件关联:
int id = randImage();
imgView1.setImageResource(id);
imgView1.setTag(id);
当你需要获得身份证时,你只需:
int id = imgView1.getTag();
答案 1 :(得分:0)
先保存它:
int Id=randImage();
imgView1.setImageResource(Id);