一般实现 我们知道,一般实现双击事件,可以通过new OnClickListener()监听点击事件,然后记录前后两次点击距离开机的时间,由时间差在一定范围实现,代码如下: lon…
工具类:校验某个服务是否还活着 import java.util.List; import android.app.ActivityManager; import android.…
问题分析 在移动端项目开发中,基于加载大数据量的原因,经常出现内存溢出的现象,那么减少内存占用,在真实开发中着实很重要,下面介绍下ListView加载数据量大时解决思路: 我们应该…
web开发中,一个系统的普通需求也包括导出excel,一般采用POI做统计报表导出excel。 导出excel工具类: import java.io.FileOutputStrea…
import java.applet.Applet; import java.applet.AudioClip; import java.awt.Dimension; import…
首先我们要实现走马灯这样一个效果,通常来说都是在TextView这个控件中来实现的,而且其中的文字一定是单行显示,如果多行显示,那走马灯效 果也就失去了存在的意义。谈到TextVi…
因为页面的滑动效果在整个应用中使用较多,所有抽取成父类来介绍,看代码注释 import android.app.Activity; import android.content.S…
1、创建SelectContactActivity类,在AndroidManifest.xml添加类 import java.util.ArrayList; import java…
1、读取sim卡信息 private TelephonyManager tm; tm = (TelephonyManager) getSystemService(TELEPHONY…
1、项目Src下创建…service包,然后新建GPSService类 package com.zebra.mobilesafe.service; import jav…
1、项目Src下新建anim包 创建anim包,存放动画xml 2、下一步动画 位移动画 解释-100%p p:代表父窗体,100%:代表整个窗体,-:代码向左移动; 前一页面移出…
HttpClient4 设置代理 DefaultHttpClient client = new DefaultHttpClient(); HttpHost proxy = new …
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