Android自定义View展示Wifi信号强弱指示方法示例
程序员文章站
2023-12-14 17:09:16
前言
最近因为工作的需要,要自定义展示wifi信号强弱的需要,就通过利用系统广播的方式实现了一个自定义view——wifistateview,下面话不多说了,感兴趣的朋友...
前言
最近因为工作的需要,要自定义展示wifi信号强弱的需要,就通过利用系统广播的方式实现了一个自定义view——wifistateview,下面话不多说了,感兴趣的朋友们一起来看看详细的介绍吧。
实现的效果图如下所示:
用不同的图片来表示wifi信号的强弱,可以自定义wifi信号等级
图标简陋了点,根据需要来替换即可
/** * 作者: 叶应是叶 * 时间: 2017/8/22 18:25 * 描述: */ public class wifistateview extends appcompatimageview { private wifimanager wifimanager; private wifihandler wifihandler; //没有开启wifi或开启了wifi但没有连接 private static final int level_none = 0; //wifi信号等级(最弱) private static final int level_1 = 1; //wifi信号等级 private static final int level_2 = 2; //wifi信号等级 private static final int level_3 = 3; //wifi信号等级(最强) private static final int level_4 = 4; private final string tag = "wifistateview"; private static class wifihandler extends handler { //虚引用 private weakreference<wifistateview> stateviewweakreference; wifihandler(wifistateview wifistateview) { stateviewweakreference = new weakreference<>(wifistateview); } @override public void handlemessage(message msg) { wifistateview wifistateview = stateviewweakreference.get(); if (wifistateview == null) { return; } switch (msg.what) { case level_1: wifistateview.setimageresource(r.drawable.wifi_1); break; case level_2: wifistateview.setimageresource(r.drawable.wifi_2); break; case level_3: wifistateview.setimageresource(r.drawable.wifi_3); break; case level_4: wifistateview.setimageresource(r.drawable.wifi_4); break; case level_none: default: wifistateview.setimageresource(r.drawable.wifi_none); break; } } } private broadcastreceiver wifistatereceiver = new broadcastreceiver() { @override public void onreceive(context context, intent intent) { log.e(tag, "action " + intent.getaction()); switch (intent.getaction()) { case wifimanager.wifi_state_changed_action: if (wifimanager.getwifistate() == wifimanager.wifi_state_disabling) { wifihandler.sendemptymessage(level_none); } break; case wifimanager.rssi_changed_action: if (wifimanager.getwifistate() == wifimanager.wifi_state_disabled) { wifihandler.sendemptymessage(level_none); return; } wifiinfo wifiinfo = wifimanager.getconnectioninfo(); int level = wifimanager.calculatesignallevel(wifiinfo.getrssi(), 5); log.e(tag, "level:" + level); wifihandler.sendemptymessage(level); break; } } }; public wifistateview(context context) { this(context, null); } public wifistateview(context context, @nullable attributeset attrs) { this(context, attrs, 0); } public wifistateview(context context, @nullable attributeset attrs, int defstyleattr) { super(context, attrs, defstyleattr); wifimanager = (wifimanager) context.getapplicationcontext().getsystemservice(context.wifi_service); wifihandler = new wifihandler(this); } @override protected void onattachedtowindow() { super.onattachedtowindow(); intentfilter intentfilter = new intentfilter(); //wifi连接状态变化 intentfilter.addaction(wifimanager.wifi_state_changed_action); //wifi信号强度变化 intentfilter.addaction(wifimanager.rssi_changed_action); getcontext().registerreceiver(wifistatereceiver, intentfilter); } @override protected void ondetachedfromwindow() { super.ondetachedfromwindow(); wifihandler.removecallbacksandmessages(null); getcontext().unregisterreceiver(wifistatereceiver); } }
这里提供代码下载:
github地址:https://github.com/leavesc/wifistateview
本地下载:http://xiazai.jb51.net/201708/yuanma/wifistateview(jb51.net).rar
总结
以上就是这篇文章的全部内容了,希望本文的内容对各位android开发者们的学习或者工作能带来一定的帮助,如果有疑问大家可以留言交流,谢谢大家对的支持。