android时间选择器使用方法,android 时间选择器（TimePicker ）学习与应用
1、新建工程
2、修改修改已经生成的res/layout/main.xml，整体替换为：
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:textSize="20sp" />
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="设置日期"/>
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="right"
android:text="设置时间"/>
3、添加关键代码
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.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;
import android.widget.TimePicker;
public class Timepicker extends Activity {
private TextView mDateDisplay;
private Button button,button1;
private int mYear;
private int mMonth;
private int mDay;
private int h;
private int m;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mDateDisplay = (TextView) findViewById(R.id.dateDisplay);
button = (Button)findViewById(R.id.button);
button1 = (Button)findViewById(R.id.button1);
//设置日期选择监听
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(0);
}
});
//设置时间选择监听
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(1);
}
});
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
h = c.get(Calendar.HOUR_OF_DAY);
m = c.get(Calendar.MINUTE);
//显示当前时间
updateDisplay();
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case 0:
return new DatePickerDialog(this,
mDateSetListener,
mYear, mMonth, mDay);
case 1:
return new TimePickerDialog(this, mtimesetListener, h, m, true);
}
return null;
}
// 将时间显示到文本框中
private void updateDisplay() {
mDateDisplay.setText(
new StringBuilder().append(mYear).append("-")
.append(formateTime(mMonth+1)).append("-")
.append(formateTime(mDay)).append(" ")
.append(formateTime(h)).append(":")
.append(formateTime(m)));
}
//获得当前日期
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();
}
};
//获得当前时间
private TimePickerDialog.OnTimeSetListener mtimesetListener =
new TimePickerDialog.OnTimeSetListener(){
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// TODO Auto-generated method stub
h = hourOfDay;
m = minute;
updateDisplay();
}
};
private String formateTime(int time) {
String timeStr = "";
if (time < 10){
timeStr = "0" + String.valueOf(time);
}else {
timeStr = String.valueOf(time);
}
return timeStr;
}
}
小结：
配置文件里没有直接使用Datepicker、TimePicker等标签。而是用按钮控制Dialog来显示日期、时间。这两种类型的对象最大的差别在于DatePicker与TimePicker是直接显示在屏幕画面上，而DatePickerDialog与TimePickerDialog对象则是以跳出Dialog的方式来显示。