Android 从timePickerDialog获取输入

我在一个项目中工作，用户在TimePickerDialog中输入时间。我想将该输入存储在另一个变量中，并将其显示为textView

 public class MainActivity extends Activity {

Button b1;
TextView tv;
int hour,min;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    b1 = (Button)findViewById(R.id.b1);
    tv = (TextView)findViewById(R.id.tv1);

    b1.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            TimePickerDialog tpd = new TimePickerDialog(MainActivity.this, new OnTimeSetListener() {

                @Override
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    // TODO Auto-generated method stub
                    hour = hourOfDay;
                    min = minute;
                }
            }, hour, min, false);
            tpd.show();
            tv.setText(hour + ":" + min);
        }

        });
    }


}

---

当我第一次运行此应用程序时，textview显示0:0。我按下按钮，对话框出现，我设置时间，然后按done，但textview不会更改，只有在我再次按下按钮后，textview才会更改为以前的输入。我想要的是，当我在timepickerdialog中按done时，textview将显示我设置的时间。它将显示该值，但仅在我再次按下按钮后显示。

单击“完成”按钮时，您需要更新

文本视图。现在，您的
TextView
在拾取完成后不会得到更新。只需更改代码，如下所示：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    b1 = (Button)findViewById(R.id.b1);
    tv = (TextView)findViewById(R.id.tv1);

    b1.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            TimePickerDialog tpd = new TimePickerDialog(MainActivity.this, new OnTimeSetListener() {

                @Override
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    // TODO Auto-generated method stub
                    hour = hourOfDay;
                    min = minute;

                    //Place it here
                    tv.setText(hour + ":" + min);
                }
            }, hour, min, false);
            tpd.show();
        }

        });
    }
}

试试这个

public class MainActivity extends Activity {

Button b1;
TextView tv;
int hour,min;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    b1 = (Button)findViewById(R.id.b1);
    tv = (TextView)findViewById(R.id.tv1);

    b1.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            TimePickerDialog tpd = new TimePickerDialog(MainActivity.this, new OnTimeSetListener() {

                @Override
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    // TODO Auto-generated method stub
                    hour = hourOfDay;
                    min = minute;
                    tv.setText(hour + ":" + min);
                }
            }, hour, min, false);
            tpd.show();
         }
     });
   }
}

tv.setText（小时+：“+min）将这一行移到
onTimeSet
函数内可能很完美