A07_TimePicker & DatePicker & AnalogClock & DigitalClock 的设置

目标：学习时间日期和时钟的设置

picker的计算机专业解释是“选择器”。

简单翻译一下：

TimePicker 时间选择器

DatePicker 日期选择器

AnalogClock 模拟时钟

DigitalClock 数字时钟

一、TimePicker

1.TimePicker使用的易做图接口是OnTimeChangedListener

2.TimePicker默认显示系统当前时间，可以使用setCurrentHour和setCurrentMinute两个方法设置默认显示时间

3.可使用setIs24HourView方法设置TimePicker以24小时制显示

4.获取TimePicker的当前时间，使用getCurrentHour和getCurrentMinute两个方法

模拟器android4.2显示效果（非24小时制）：

真机android2.3.7显示效果（非24小时制）：

真机android2.3.7显示效果（24小时制）：

Java代码：

[java]
package com.haut.a07_timepicker;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TimePicker;
import android.widget.TimePicker.OnTimeChangedListener;
import android.widget.Toast;

public class MainActivity extends Activity {

    private TimePicker timePicker;
    private Button button;

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

        timePicker = (TimePicker) findViewById(R.id.timePickerId);
        button = (Button) findViewById(R.id.buttonId);
        // 为timePicker创建易做图
        TimePickerListener timeListener = new TimePickerListener();
        timePicker.setOnTimeChangedListener(timeListener);
        // 为button创建易做图
        ButtonListener buttonListener = new ButtonListener();
        button.setOnClickListener(buttonListener);

        // TimePicker默认显示当前时间，可以手动制定它的默认显示时间
        timePicker.setCurrentHour(12);
        timePicker.setCurrentMinute(0);

        // 设置显示格式为24小时制
        timePicker.setIs24HourView(true);
    }

    class TimePickerListener implements OnTimeChangedListener {

        public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
            // 使用Toast显示TimePicker的时间
            String time = hourOfDay + "点:" + minute + "分";
            Toast.makeText(MainActivity.this, time, Toast.LENGTH_SHORT).show();
        }

    }

    class ButtonListener implements OnClickListener {

        public void onClick(View v) {
            String time = timePicker.getCurrentHour() + "点:"
                    + timePicker.getCurrentMinute() + "分";
            Toast.makeText(MainActivity.this, time, Toast.LENGTH_SHORT).show();
        }

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}

package com.haut.a07_timepicker;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TimePicker;
import android.widget.TimePicker.OnTimeChangedListener;
import android.widget.Toast;

public class MainActivity extends Activity {

private TimePicker timePicker;
private Button button;

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

  timePicker = (TimePicker) findViewById(R.id.timePickerId);
  button = (Button) findViewById(R.id.buttonId);
  // 为timePicker创建易做图
  TimePickerListener timeListener = new TimePickerListener();
  timePicker.setOnTimeChangedListener(timeListener);
  // 为button创建易做图
  ButtonListener buttonListener = new ButtonListener();
  button.setOnClickListener(buttonListener);

  // TimePicker默认显示当前时间，可以手动制定它的默认显示时间
  timePicker.setCurrentHour(12);
  timePicker.setCurrentMinute(0);

// 设置显示格式为24小时制
timePicker.setIs24HourView(true);
}

class TimePickerListener implements OnTimeChangedListener {

  public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
   // 使用Toast显示TimePicker的时间
   String time = hourOfDay + "点:" + minute + "分";
   Toast.makeText(MainActivity.this, time, Toast.LENGTH_SHORT).show();
  }

}

class ButtonListener implements OnClickListener {

  public void onClick(View v) {
   String time = timePicker.getCurrentHour() + "点:"
     + timePicker.getCurrentMinute() + "分";
   Toast.makeText(MainActivity.this, time, Toast.LENGTH_SHORT).show();
  }

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInfl

补充：移动开发 , Android ,