Android：在对话框中使用datepicker和timepicker [英] Android: use a datepicker and timepicker from within a Dialog

问题描述

我正面临一个问题，我不知道如何解决...
我有一个活动，当我点击链接到这个活动的菜单的一个特定的项目，一个对话框显示并用于添加一个物品。这个项目有一个日期和时间，但是我在这个对话框中没有设置一个DatePicker和TimePicker。我也尝试将活动传递给对话框，并使用它来显示datepicker，但这不起作用。
在此之前，我在另一个Activity中处理了这样的项目的创建。在这种情况下，它工作正常。但是我发现对话性别... :-)
你有什么想法吗？
希望我不太困惑.....
感谢很多，
Luc

我编辑这篇文章来分享代码我有困难。

我有一个基本的Dialog类试图使用DatePicker和TimePicker。基本上，Eclipse抱怨说：

• showDialog未定义为View.OnClickListener（）


• onCreateDialog方法：类型为EventCreateDialog的方法onCreateDialog（int）必须重写或实现超类型方法


• DatePickerDialog未定义（因为这不是acitvity）






所有这些东西都是从一个活动中起作用的，但我不能使用对话框。





非常感谢，
Luc

 
 package com.android.myapp; 
 import ... 
 public class TestDialog extends Dialog实现android.view.View.OnClickListener {
 private TextView mDateDisplay; 
私人按钮mPickDate; 
私人按钮mPickTime; 
 private int mYear; 
 private int mMonth; 
 private int mDay; 
 private int mHour; 
 private int mMinute; 
 static final int DATE_DIALOG_ID = 0; 
 static final int TIME_DIALOG_ID = 1; 
 
私人按钮mButton_ok; 
 
私人按钮mButton_ko; 
 
 private ReadyListener readyListener; 
 
私有上下文上下文; 
 
 public TestDialog（Context context，ReadyListener readyListener）{
 super（context）; 
 this.context = context; 
 this.readyListener = readyListener; 
} 
 
 @Override 
 protected void onCreate（Bundle savedInstanceState）{
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.event_create）; 
 
 mButton_ok =（Button）findViewById（R.id.button_ok）; 
 mButton_ko =（Button）findViewById（R.id.button_ko）; 
 
 //添加监听器
 mButton_ok.setOnClickListener（this）; 
 mButton_ko.setOnClickListener（this）; 
 
 mDateDisplay =（TextView）findViewById（R.id.dateDisplay）; 
 mPickDate =（Button）findViewById（R.id.pickDate）; 
 mPickTime =（Button）findViewById（R.id.pickTime）; 
 //添加点击监听器到按钮
 mPickDate.setOnClickListener（new View.OnClickListener（）{
 public void onClick（View v）{showDialog（DATE_DIALOG_ID）;} 
 }）; 
 mPickTime.setOnClickListener（new View.OnClickListener（）{
 public void onClick（View v）{showDialog（TIME_DIALOG_ID）;} 
}）; 
 //获取当前日期
 final Calendar c = Calendar.getInstance（）; 
 mYear = c.get（Calendar.YEAR）; 
 mMonth = c.get（Calendar.MONTH）; 
 mDay = c.get（Calendar.DAY_OF_MONTH）; 
 mHour = c.get（Calendar.HOUR_OF_DAY）; 
 mMinute = c.get（Calendar.MINUTE）; 
 updateDisplay（）; 
} 
 
 @Override 
 protected Dialog onCreateDialog（int id）{
 switch（id）{
 case DATE_DIALOG_ID：
 return new DatePickerDialog （这个，mDateSetListener，mYear，mMonth，mDay）; 
 case TIME_DIALOG_ID：
 return new TimePickerDialog（this，mTimeSetListener，mHour，mMinute，false）; 
} 
返回null; 
} 
 private void updateDisplay（）{
 mDateDisplay.setText（
 new StringBuilder（）
 //月份为0，因此添加1 
 .append （$ 1）.append（ - ）
 .append（mDay）.append（ - ）
 .append（mYear）.append（）
 .append pad（mHour））。append（：）
 .append（pad（mMinute）））; 
} 
 
 //当用户设置对话框中的日期时收到的回调
 private DatePickerDialog.OnDateSetListener mDateSetListener = 
 new DatePickerDialog.OnDateSetListener（）{ 
 public void onDateSet（DatePicker view，int year，int monthOfYear，int dayOfMonth）{
 mYear = year; 
 mMonth = monthOfYear; 
 mDay = dayOfMonth; 
 updateDisplay（）; 
} 
}; 
 
 private TimePickerDialog.OnTimeSetListener mTimeSetListener = 
 new TimePickerDialog.OnTimeSetListener（）{
 public void onTimeSet（TimePicker view，int hourOfDay，int minute）{
 mHour = hourOfDay ; 
 mMinute =分钟; 
 updateDisplay（）; 
} 
}; 
 
 private static String pad（int c）{
 if（c> = 10）
 return String.valueOf（c）; 
 else 
返回0+ String.valueOf（c）; 
} 
 
 public interface ReadyListener {
 public void ready（MyObj myObj）; 
} 
 
 @Override 
 public void onClick（View v）{
 if（v == mButton_ok）{
 // Do stuff ... 
 
} 
 
 
 if（v == mButton_ko）{
 dismiss（）; 
} 
} 
} 
 
 




解决方案

这是我的工作原理：

  public class EditRecordDialog extends Dialog {
 protected Context _context; 
私人记录_record; 
 
 public EditRecordDialog（Context context，
 Record record）{
 super（context）; 
 _context = context; 
 _record = record 
按钮buttonDate; 
 buttonDate.setText（_record.getRecordDate（））; //返回'mm-dd-yy'
 
} // EditRecordDialog 
 
 
 // showDatePickerDialog ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ view）{
 String dateString; 
 int年，月，日; 
 
 dateString = buttonDate.getText（）。toString（）; 
 month = Integer.valueOf（dateString.substring（0，2）） -  1; //月是零基础
 day = Integer.valueOf（dateString.substring（3，5））; 
 year = Integer.valueOf（20+ dateString.substring（6，8））; 
 
 DatePickerDialog dpd = new DatePickerDialog（_context，dateSetListener，年，月，日）; 
 dpd.show（）; 
 
} // showDatePickerDialog -------------------------------------- -------------- 
 
 
 // OnDateSetListener +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++++++++++++++++++++++++ 
 DatePickerDialog.OnDateSetListener dateSetListener = new DatePickerDialog.OnDateSetListener（ ）{
 @Override public void onDateSet（DatePicker view，int year，int month，int day）{
 buttonDate.setText（ConfigObjectDAO.formatDate（（month + 1）+ - + day + - +年））; 
} // onDateSet 
}; // OnDateSetListener ----------------------------------------------- ------- 
} 
  




I am facing a problem I do not know how to solve... I have an activity, when I click on a particuliar item of the menu linked to this activity, a dialog is displayed and used to add an item. This item has a date and a time, but I do not manage to have a DatePicker and TimePicker within this dialog. I also try passing the activity to the dialog and use this one to display the datepicker., but that does not work. Before this, I handled the creation of such items within another Activity. In this case, it works fine. But I found the Dialog sexier... :-) Would you have any ideas ? Hope I am not too confused..... thanks a lot, Luc

I edit this post to share the code I have difficulties with.

I have a basic Dialog class that tried to use DatePicker and TimePicker. Basically, Eclipse complains that:

• the showDialog is undefined for View.OnClickListener()
• onCreateDialog method: The method onCreateDialog(int) of type EventCreateDialog must override or implement a supertype method
• DatePickerDialog is undefined (as this is not an acitvity)

All this stuff works from within an Activity but I cannot have it working from a Dialog.

Thanks a lot, Luc

 package com.android.myapp;
import ...
public class TestDialog extends Dialog implements android.view.View.OnClickListener{
private TextView mDateDisplay;
private Button mPickDate;
private Button mPickTime;
private int mYear;
private int mMonth;
private int mDay;
private int mHour;
private int mMinute;
static final int DATE_DIALOG_ID = 0;
static final int TIME_DIALOG_ID = 1;

private Button mButton_ok;

private Button mButton_ko;

private ReadyListener readyListener;

private Context context;    

    public TestDialog(Context context, ReadyListener readyListener) {
        super(context);
        this.context = context;
        this.readyListener = readyListener;
    }

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

        mButton_ok = (Button)findViewById(R.id.button_ok);
        mButton_ko = (Button)findViewById(R.id.button_ko);

        // Add listeners
        mButton_ok.setOnClickListener(this);
        mButton_ko.setOnClickListener(this);

            mDateDisplay = (TextView) findViewById(R.id.dateDisplay);
            mPickDate = (Button) findViewById(R.id.pickDate);
            mPickTime = (Button) findViewById(R.id.pickTime);
            // add a click listener to the button
            mPickDate.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) { showDialog(DATE_DIALOG_ID); }
            });
            mPickTime.setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) { showDialog(TIME_DIALOG_ID); }
            });
            // get the current date
            final Calendar c = Calendar.getInstance();
            mYear = c.get(Calendar.YEAR);
            mMonth = c.get(Calendar.MONTH);
            mDay = c.get(Calendar.DAY_OF_MONTH);
            mHour = c.get(Calendar.HOUR_OF_DAY);
            mMinute = c.get(Calendar.MINUTE);
            updateDisplay();
    }   

        @Override
        protected Dialog onCreateDialog(int id) {
            switch (id) {
            case DATE_DIALOG_ID:
                return new DatePickerDialog(this, mDateSetListener, mYear, mMonth, mDay);
            case TIME_DIALOG_ID:
                return new TimePickerDialog(this, mTimeSetListener, mHour, mMinute, false);
            }
            return null;
        }
        private void updateDisplay() {
            mDateDisplay.setText(
                new StringBuilder()
                    // Month is 0 based so add 1
                    .append(mMonth + 1).append("-")
                    .append(mDay).append("-")
                    .append(mYear).append(" ")
                    .append(pad(mHour)).append(":")
                   .append(pad(mMinute)));
        }

        // the callback received when the user "sets" the date in the dialog
        private DatePickerDialog.OnDateSetListener mDateSetListener =
            new DatePickerDialog.OnDateSetListener() {
                public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                    mYear = year;
                    mMonth = monthOfYear;
                    mDay = dayOfMonth;
                    updateDisplay();
                }
        };

        private TimePickerDialog.OnTimeSetListener mTimeSetListener =
            new TimePickerDialog.OnTimeSetListener() {
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    mHour = hourOfDay;
                    mMinute = minute;
                    updateDisplay();
                }
        };

        private static String pad(int c) {
            if (c >= 10)
                return String.valueOf(c);
            else
                return "0" + String.valueOf(c);
        }

    public interface ReadyListener { 
        public void ready(MyObj myObj); 
    } 

     @Override
        public void onClick(View v) {
        if (v == mButton_ok) {
            // Do stuff....

        }


        if(v == mButton_ko){
            dismiss();
        }
     }
}

解决方案

Here's what I have that works:

public class EditRecordDialog extends Dialog {
  protected Context _context;
  private   Record  _record;

  public EditRecordDialog( Context context,
                           Record  record ) {
    super( context );
    _context = context;
    _record  = record
    Button buttonDate;
    buttonDate.setText( _record.getRecordDate() ); // returns 'mm-dd-yy'

  } // EditRecordDialog


// showDatePickerDialog ++++++++++++++++++++++++++++++++++++++++++++++++++++++
private void showDatePickerDialog( View view ) {
  String dateString;
  int    year, month, day;

  dateString = buttonDate.getText().toString();
  month = Integer.valueOf( dateString.substring( 0, 2 ) ) - 1; // month is zero based
  day   = Integer.valueOf( dateString.substring( 3, 5 ) );
  year  = Integer.valueOf( "20" + dateString.substring( 6, 8 ) );

  DatePickerDialog dpd = new DatePickerDialog( _context, dateSetListener, year, month, day );
  dpd.show();

} // showDatePickerDialog ----------------------------------------------------


// OnDateSetListener +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
DatePickerDialog.OnDateSetListener dateSetListener = new DatePickerDialog.OnDateSetListener() {
  @Override public void onDateSet( DatePicker view, int year, int month, int day ) {
    buttonDate.setText( ConfigObjectDAO.formatDate( (month+1) + "-" + day + "-" + year ) );
  } // onDateSet
}; // OnDateSetListener ------------------------------------------------------
}

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