本文实例分析了android开发之timepicker控件用法。分享给大家供大家参考，具体如下：
新建项目：
new android project->
project name:hellospinner
build target:android 2.2
application name:hellospinner
package name:com.b510
create activity:mainactivity
min sdk version:9
finish
运行效果：
如果：
return new timepickerdialog(this, mtimesetlistener, mhour, mminute, false);
代码部分：
mainactivity.java：
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package com.b510;import java.util.calendar;import android.app.activity;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.textview;import android.widget.timepicker;public class hellotimepicker extends activity { /* 显示时间信息 */ private textview tvtimepickerdisplay; /* 设置时间按钮 */ private button btntimepicker; /* 小时 */ private int mhour; /* 分钟 */ private int mminute; /* 标识 dialog的id */ static final int time_dialog_id = 0; /** called when the activity is first created. */ @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.main); this.tvtimepickerdisplay = (textview) this .findviewbyid(r.id.tv_timepicker_display); this.btntimepicker = (button) findviewbyid(r.id.btn_timepicker); btntimepicker.setonclicklistener(listener); // get the current time final calendar c = calendar.getinstance(); mhour = c.get(calendar.hour_of_day); mminute = c.get(calendar.minute); // display the current date updatedisplay(); } private onclicklistener listener = new onclicklistener() { @override public void onclick(view v) { showdialog(time_dialog_id); } }; // updates the time we display in the textview private void updatedisplay() { tvtimepickerdisplay.settext(new stringbuilder().append(pad(mhour)).append(":") .append(pad(mminute))); } private static string pad(int c) { if (c >= 10) return string.valueof(c); else return "0" + string.valueof(c); } // the callback received when the user "sets" the time in the dialog private timepickerdialog.ontimesetlistener mtimesetlistener = new timepickerdialog.ontimesetlistener() { public void ontimeset(timepicker view, int hourofday, int minute) { mhour = hourofday; mminute = minute; updatedisplay(); } }; @override protected dialog oncreatedialog(int id) { switch (id) { case time_dialog_id: return new timepickerdialog(this, mtimesetlistener, mhour, mminute, true); } return null; }} |
main.xml：
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<?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:id="@+id/tv_timepicker_display" android:layout_width="fill_parent" android:layout_height="wrap_content"/><button android:id="@+id/btn_timepicker" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="change the time"/></linearlayout> |
希望本文所述对大家android程序设计有所帮助。
