android学习笔记19——对话框(DatePickerDialog、TimePickerDialog)

DatePickerDialog、TimePickerDialog

==>

DatePickerDialog、TimePickerDialog功能、用法都比较简单，操作步骤：

　　1.通过new关键字创建DatePickerDialog、TimePickerDialog实例，调用它的show()方法即可将日期选择对话框、时间选择对话框显示出来；

　　2.通过为DatePickerDialog、TimePickerDialog绑定监听器，来获取用户设置的事件...

实例:

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

布局文件==》
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >
 
    <EditText
        android:id="@+id/edtContent"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
 
    <Button
        android:id="@+id/btnDatePickerDialog"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="DatepickerDialog" />
 
    <Button
        android:id="@+id/btnTimePickerDialog"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="TimePickerDialog" />
 
</LinearLayout>
 
代码实现==》
package com.example.mydatepickerdialog;
 
import java.util.Calendar;
 
import android.os.Bundle;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TimePicker;
 
public class MainActivity extends Activity
{
    EditText EditContent;
 
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        Button datepicker = (Button) this.findViewById(R.id.btnDatePickerDialog);
        Button timepicker = (Button) this.findViewById(R.id.btnTimePickerDialog);
        EditContent = (EditText) findViewById(R.id.edtContent);
 
        datepicker.setOnClickListener(new ButtonOnClickLinstener());
        timepicker.setOnClickListener(new ButtonOnClickLinstener());
    }
 
    private class ButtonOnClickLinstener implements OnClickListener
    {
        @Override
        public void onClick(View v)
        {
            switch (v.getId())
            {
            case R.id.btnDatePickerDialog:
                Calendar calendar = Calendar.getInstance();
                // 创建DatePickerDialog对话框并显示
                new DatePickerDialog(MainActivity.this, new DatePickerDialog.OnDateSetListener()
                {
                    @Override
                    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth)
                    {
                        StringBuffer str = new StringBuffer();
                        str.append("你选择了:");
                        str.append(year);
                        str.append("年");
                        str.append(monthOfYear);
                        str.append("月");
                        str.append(dayOfMonth);
                        str.append("日");
 
                        EditContent.setText(str);
                    }
                }, calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
                        calendar.get(Calendar.DAY_OF_MONTH)).show();
                break;
 
            case R.id.btnTimePickerDialog:
                Calendar c = Calendar.getInstance();
                new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener()
                {
                    @Override
                    public void onTimeSet(TimePicker view, int hourOfDay, int minute)
                    {
                        StringBuffer str = new StringBuffer();
                        str.append("你选择了:");
                        str.append(hourOfDay);
                        str.append("时");
                        str.append(minute);
                        str.append("分");
                         
                        EditContent.setText(str);
                    }
                }, c.get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE), true).show();// true标识采用24小时制
                break;
            }
        }
    }
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
}