检索和设置从DialogFragment数据（的DatePicker） [英] Retrieve and set data from DialogFragment (DatePicker)

问题描述

我的DialogFragment类被调用时，我preSS上的活动按钮。我想日通过这一DialogFragment设置为上的按钮显示的文本。 FindViewById拒绝被由类认可。

我发现了一个类似的问题但我无法把它与我的情况。

code：

1. 按钮它调用对话片段：

    公共无效的日期选择器（视图v）{
       DialogFragment newFragment =新DatePickerFragment（）;
       newFragment.show（getFragmentManager（），日期选择器）;
   }
    

2. code对话片段：

    公共类DatePickerFragment扩展DialogFragment工具
       DatePickerDialog.OnDateSetListener {
   
       @覆盖
       公共对话onCreateDialog（包savedInstanceSateate）{
   
           最后的日历C = Calendar.getInstance（）;
               INT年= c.get（Calendar.YEAR）;
               INT月= c.get（Calendar.MONTH）;
               INT天= c.get（Calendar.DAY_OF_MONTH）;
   
               返回新DatePickerDialog（getActivity（），这，年，月，日）;
           }
   
           公共无效onDateSet（DatePicker的观点，年整型，INT月，日整型）{
               //做一些与所选择的日期
           }
       }
   }
    

解决方案

在你的DialogFragment的方法是主管当用户设置的日期被通知，做到这一点

 按钮activityButton =（按钮）getActivity（）findViewById（R.id.myButton）。
activityButton.setText（指明MyDate）;
 

My DialogFragment class is invoked when I press a button on a activity. I want the date set through this DialogFragment to be displayed on the buttons text. FindViewById refuses to be recognized by the class.

I found a similar question but I'm unable to relate it to my case.

Code:

1. Button which calls the Dialogue fragment:

   public void datepicker(View v) {
       DialogFragment newFragment = new DatePickerFragment();
       newFragment.show(getFragmentManager(), "datePicker"); 
   }
   

2. Code for dialogue fragment:

   public class DatePickerFragment extends DialogFragment implements
       DatePickerDialog.OnDateSetListener {
   
       @Override
       public Dialog onCreateDialog(Bundle savedInstanceSateate) {
   
           final Calendar c = Calendar.getInstance();
               int year = c.get(Calendar.YEAR);
               int month = c.get(Calendar.MONTH);
               int day = c.get(Calendar.DAY_OF_MONTH);
   
               return new DatePickerDialog(getActivity(), this, year, month, day);
           }
   
           public void onDateSet(DatePicker view, int year, int month, int day) {
               // Do something with the date chosen
           }
       }
   }
   

解决方案

In the method in your DialogFragment that is in charge of being notified when the user sets the date, do this

Button activityButton = (Button)getActivity().findViewById(R.id.myButton);
activityButton.setText (myDate);

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