Android:在对话框中使用日期选择器和时间选择器

我面临着一个我不知道如何解决的问题。

我有一个活动,当我点击链接到此活动的菜单中的特定项目时,会显示一个对话框并用于添加项目。 这个项目有一个日期和时间,但我没有设法在这个对话框中有一个DatePickerTimePicker 。 我也尝试将活动传递给对话框,并使用这个来显示DatePicker,但这不起作用。 在此之前,我在另一项活动中处理了这些项目的创建。 在这种情况下,它工作正常。 但是我发现Dialog更性感...... :-)你有什么想法吗? 希望我不会太困惑.....非常感谢,

我编辑这篇文章来分享我遇到的困难。

我有一个基本的Dialog类,试图使用DatePickerTimePicker. 基本上, Eclipse抱怨说:

  • showDialog未定义为View.OnClickListener()
  • onCreateDialog方法: EventCreateDialog类型的onCreateDialog(int)方法必须覆盖或实现超类型方法
  • DatePickerDialog是未定义的(因为这不是一个活动)
  • 所有这些东西都是在一个Activity内工作的,但我无法通过一个Dialog工作。

    非常感谢,

    包com.android.myapp;

    public class TestDialog extends Dialog implements android.view.View.OnClickListener {
        static final int DATE_DIALOG_ID = 0;
        static final int TIME_DIALOG_ID = 1;
        private TextView mDateDisplay;
        private Button mPickDate;
        private Button mPickTime;
        private int mYear;
        private int mMonth;
        private int mDay;
        private int mHour;
        private int mMinute;
        private Button mButton_ok;
        private Button mButton_ko;
    
        private ReadyListener readyListener;
    
        private Context context;
        // 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();
                    }
                };
    
        public TestDialog(Context context, ReadyListener readyListener) {
            super(context);
            this.context = context;
            this.readyListener = readyListener;
        }
    
        private static String pad(int c) {
            if (c >= 10)
                return String.valueOf(c);
            else
                return "0" + String.valueOf(c);
        }
    
        @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)));
        }
    
        @Override
        public void onClick(View v) {
            if (v == mButton_ok) {
                // Do stuff....
            }
            if (v == mButton_ko) {
                dismiss();
            }
        }
    
        public interface ReadyListener {
            public void ready(MyObj myObj);
        }
    }
    

    以下是我的工作原理:

    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 ------------------------------------------------------
    }
    

    PickerViewSample.java

    package com.sai.samples.views;
    
    import java.util.Calendar;
    
    import android.app.Activity;
    import android.app.DatePickerDialog;
    import android.app.Dialog;
    import android.app.TimePickerDialog;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.DatePicker;
    import android.widget.TextView;
    import android.widget.TimePicker;
    
    public class PickerViewSample extends Activity {
    
        static final int DATE_DIALOG_ID = 1;
        static final int TIME_DIALOG_ID = 2;
        private TextView dateDisplay;
        private Button pickDate;
        private int year, month, day;
        private TextView timeDisplay;
        private Button pickTime;
        private int hours, min;
    
        /** Called when the activity is first created. */
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
    
            dateDisplay = (TextView)findViewById(R.id.TextView01);
            pickDate = (Button)findViewById(R.id.Button01);
    
            pickDate.setOnClickListener( new OnClickListener() {
    
                @Override
                public void onClick(View v) {
                    showDialog(DATE_DIALOG_ID);
                }
    
            });
    
            final Calendar cal = Calendar.getInstance();
            year = cal.get(Calendar.YEAR);
            month = cal.get(Calendar.MONTH);
            day = cal.get(Calendar.DAY_OF_MONTH);
    
            updateDate();
    
            timeDisplay = (TextView)findViewById(R.id.TextView02);
            pickTime = (Button)findViewById(R.id.Button02);
    
            pickTime.setOnClickListener( new OnClickListener () {
    
                @Override
                public void onClick(View v) {
                    showDialog(TIME_DIALOG_ID);
    
                }
    
            });
    
            hours = cal.get(Calendar.HOUR);
            min = cal.get(Calendar.MINUTE);
    
            updateTime();
        }
    
        private void updateTime() {
            timeDisplay.setText(new StringBuilder().append(hours).append(':')
                    .append(min));
    
        }
    
        private void updateDate() {
            dateDisplay.setText(new StringBuilder().append(day).append('-')
                    .append(month + 1).append('-').append(year));
    
        }
    
        private DatePickerDialog.OnDateSetListener dateListener = 
            new DatePickerDialog.OnDateSetListener() {
    
                @Override
                public void onDateSet(DatePicker view, int yr, int monthOfYear,
                        int dayOfMonth) {
                    year = yr;
                    month = monthOfYear;
                    day = dayOfMonth;
                    updateDate();
                }
        };
    
        private TimePickerDialog.OnTimeSetListener timeListener = 
            new TimePickerDialog.OnTimeSetListener() {
    
                @Override
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    hours = hourOfDay;
                    min = minute;
                    updateTime();
                }
    
        };
        protected Dialog onCreateDialog(int id){
            switch(id) {
            case DATE_DIALOG_ID:
                return new DatePickerDialog(this, dateListener, year, month, day);
            case TIME_DIALOG_ID:
                return new TimePickerDialog(this, timeListener, hours, min, false);
            }
            return null;
    
        }
    }
    

    main.xml中

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        >
    <TextView android:text="@string/date_text" 
        android:id="@+id/TextView01" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:textSize="26px" 
        android:typeface="sans"></TextView>
    <Button android:text="@string/date_button" 
        android:id="@+id/Button01" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content"></Button>
    
    <TextView android:text="@string/time_text" 
        android:id="@+id/TextView02" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content"
        android:textSize="26px" 
        android:typeface="sans"></TextView>
    <Button android:text="@string/time_button" 
        android:id="@+id/Button02" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content"></Button>
    </LinearLayout>
    

    datepickerlayout.xml

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content">
    <DatePicker 
        android:id="@+id/DatePicker01" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content"></DatePicker>
    </LinearLayout>
    

    在全局中声明变量为:

    private int year, month, day, Hour, Minute;
    
    public static final int DATE_PICKER_ID = 1111;
    

    在onCreate()

    // Get current date by calender
    final Calendar c = Calendar.getInstance();
    
    year = c.get(Calendar.YEAR);
    
    month = c.get(Calendar.MONTH);
    
    day = c.get(Calendar.DAY_OF_MONTH);
    

    从按钮点击调用datepicker

    showDialog(Constant.DATE_PICKER_ID);
    

    方法:

      @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {
            case Constant.DATE_PICKER_ID:
    
                // open datepicker dialog.
                // set date picker for current date
                // add pickerListener listner to date picker
                return new DatePickerDialog(this, pickerListener, year, month, day);
    
            case Constant.TIME_PICKER_ID:
                return new TimePickerDialog(this, timeSetListener, Hour, Minute, false);
        }
        return null;
    }
    
    private DatePickerDialog.OnDateSetListener pickerListener = new DatePickerDialog.OnDateSetListener() {
    
        // when dialog box is closed, below method will be called.
        @Override
        public void onDateSet(DatePicker view, int selectedYear,
                              int selectedMonth, int selectedDay) {
    
            year = selectedYear;
            month = selectedMonth;
            day = selectedDay;
    
    
    
    
    
    
    
                text_date.setText(new StringBuilder().append(month + 1)
                        .append("/").append(day).append("/").append(year)
                        .append(" "));
    
    
        }
    };
    
    链接地址: http://www.djcxy.com/p/32017.html

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