android之TimePicker
TimePicker:时间选择器。这个和DatePicker的设置基本差不多,下面就不多说了,基本注释都在代码中。效果:
程序开始画面
点击按钮后就会显示时间选择器对话框
在对话框上面设置时间:
当用户设置好时间后,将时间显示到TextView上面:
layout中的xml文件:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<TextView
android:id="@+id/textview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="设置的时间:"
/>
<Button
android:id="@+id/timepickerBut"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="改变时间"
/>
</LinearLayout>
Activaty.java文件:
package com.cheng.timepickerproject;
import java.util.Calendar;
import android.os.Bundle;
import android.app.Activity;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;
public class TimePickerActivity extends Activity {
private Button mButton; //定义按钮
private TextView mTextView;//定义文本框
private int mHour; //存放时间的小时
private int mMinute; //存放时间的分钟
private static final int TIMEPICKER_DIALOG_1 = 0; //设置Dialog的id
//时间易做图,当用户改变时间的时候将会调用它
OnTimeSetListener otsl = new OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// TODO Auto-generated method stub
//设置小时、分钟,并把时间显示在文本框上
mHour = hourOfDay;
mMinute = minute;
mTextView.setText("当前时间:" + mHour +":"+mMinute);
}
};
//从写onCreateDialog,创建一个对话框
protected Dialog onCreateDialog(int id) {
switch (id) {
case TIMEPICKER_DIALOG_1:
//新建一个TimePickerDialog
return new TimePickerDialog(TimePickerActivity.this, otsl, mHour, mMinute, true);
default:
break;
}
return null;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
super.setContentView(R.layout.main);
//给按钮和文本框赋值
mButton = (Button)findViewById(R.id.timepickerBut);
mTextView = (TextView)findViewById(R.id.textview);
//点击易做图
View.OnClickListener ocl = new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//获得当前的时间的小时和分钟
Calendar calendar = Calendar.getInstance();
mHour = calendar.get(Calendar.HOUR);
mMinute = calendar.get(Calendar.MINUTE);
//显示对话框
showDialog(TIMEPICKER_DIALOG_1);
}
};
//将点击时间绑定到按钮上面
mButton.setOnClickListener(ocl);
}
@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;
}
}
补充:移动开发 , Android ,