Android 评级栏在自定义对话框中不起作用，在调试器中显示排序栏：null（值）？

Question

public static float i=0;
public static String tst;
private RatingBar ratingBar;
private  Dialog dialog;
private  Button dialog_btn;

//这里继续创建方法等..

protected Dialog onCreateDialog(int id)
    {  
      dialog = new Dialog(this); 
      dialog.setContentView(R.layout.customdialog); 
      dialog.setTitle("Рејтинг"); 

      ratingBar = (RatingBar) findViewById(R.id.ratingbarD);
      dialog_btn = (Button) dialog.findViewById(R.id.rank_dialog_button); 


      dialog_btn.setOnClickListener(new View.OnClickListener()  
      {

        public void onClick(View arg0) {

            i=ratingBar.getRating();
                 tst=Float.toString(i); 
                Toast.makeText(vicp.this,tst,Toast.LENGTH_SHORT).show(); 
                dialog.dismiss();

        } 

      });
                return dialog;

    }

//我有自定义对话框的xml，上面有评级栏和按钮，我得到的错误是在线的(i = ratingbar.getRating();)

Answer 1

您没有忘记在对话框上执行 findViewById() 吗？换句话说，不应该是：

ratingBar = (RatingBar) dialog.findViewById(R.id.ratingbarD);