本文实例讲述了android编程实现简单流量管理功能的方法。分享给大家供大家参考，具体如下：
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package cn.itcast.mobilesafe.ui;import java.util.list;import android.app.activity;import android.content.intent;import android.content.pm.packagemanager;import android.content.pm.resolveinfo;import android.graphics.drawable.drawable;import android.net.trafficstats;import android.os.bundle;import android.view.view;import android.view.viewgroup;import android.widget.baseadapter;import android.widget.imageview;import android.widget.listview;import android.widget.textview;import cn.itcast.mobilesafe.r;import cn.itcast.mobilesafe.util.textformater;public class trafficmanageractivity extends activity { private textview _3gtotal; private textview wifitotal; private listview content; private string mobiletraffic; private string wifitraffic; private packagemanager pm; private trafficadapter adapter; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); pm = getpackagemanager(); setcontentview(r.layout.traffic_manager); _3gtotal = (textview) this.findviewbyid(r.id._3gtotal); wifitotal = (textview) this.findviewbyid(r.id.wifitotal); content = (listview) this.findviewbyid(r.id.content); settotaldata(); adapter = new trafficadapter(); content.addheaderview(view.inflate(this, r.layout.traffic_title, null)); content.setadapter(adapter); } private void settotaldata() { long mobilerx = trafficstats.getmobilerxbytes(); long mobiletx = trafficstats.getmobiletxbytes(); long totalrx = trafficstats.gettotalrxbytes(); long totaltx = trafficstats.gettotaltxbytes(); long wifirx = totalrx - mobilerx; long wifitx = totaltx - mobiletx; mobiletraffic = textformater.getdatasize(mobilerx + mobiletx); _3gtotal.settext(mobiletraffic); wifitraffic = textformater.getdatasize(wifitx + wifirx); wifitotal.settext(wifitraffic); } private class trafficadapter extends baseadapter{ list<resolveinfo> resolveinfos ; public trafficadapter() { super(); intent intent = new intent(); intent.setaction("android.intent.action.main"); intent.addcategory("android.intent.category.launcher"); resolveinfos = pm.queryintentactivities(intent, packagemanager.match_default_only); } @override public int getcount() { return resolveinfos.size(); } @override public object getitem(int position) { return position; } @override public long getitemid(int position) { return position; } @override public view getview(int position, view convertview, viewgroup parent) { view view ; if(null == convertview){ view = view.inflate(getapplicationcontext(), r.layout.traffic_item, null); }else{ view = convertview; } viewholder holder = new viewholder(); holder.iv_traffic_icon = (imageview) view.findviewbyid(r.id.iv_traffic_icon); holder.tv_traffic_name = (textview) view.findviewbyid(r.id.tv_traffic_name); holder.tv_traffic_tx = (textview) view.findviewbyid(r.id.tv_traffic_tx); holder.tv_traffic_rx = (textview) view.findviewbyid(r.id.tv_traffic_rx); resolveinfo info = resolveinfos.get(position); string appname = info.loadlabel(pm).tostring(); holder.tv_traffic_name.settext(appname); drawable icon = info.loadicon(pm); holder.iv_traffic_icon.setimagedrawable(icon); int uid = info.activityinfo.applicationinfo.uid; holder.tv_traffic_rx.settext(textformater.getdatasize(trafficstats.getuidrxbytes(uid))); holder.tv_traffic_tx.settext(textformater.getdatasize(trafficstats.getuidtxbytes(uid))); return view; } } static class viewholder{ imageview iv_traffic_icon; textview tv_traffic_name; textview tv_traffic_tx; textview tv_traffic_rx; }} |
traffic_manager.xml
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<?xml version="1.0" encoding="utf-8"?><linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <tablelayout android:layout_width="fill_parent" android:layout_height="wrap_content" > <tablerow android:layout_width="fill_parent" android:layout_height="wrap_content" > <textview android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:text="2g/3g总流量" /> <textview android:id="@+id/_3gtotal" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" /> </tablerow> <tablerow android:layout_width="fill_parent" android:layout_height="wrap_content" > <textview android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:text="wifi总流量" /> <textview android:id="@+id/wifitotal" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" /> </tablerow> </tablelayout> <slidingdrawer android:id="@+id/ll_sd_traffic" android:layout_width="match_parent" android:layout_height="match_parent" android:content="@+id/content" android:handle="@+id/handle" android:orientation="vertical" > <imageview android:id="@id/handle" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/notification" /> <listview android:id="@id/content" android:layout_width="fill_parent" android:layout_height="fill_parent" > </listview> </slidingdrawer></linearlayout> |
traffic_manager_item.xml
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<?xml version="1.0" encoding="utf-8"?><linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_vertical" android:orientation="horizontal" > <imageview android:id="@+id/iv_traffic_icon" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:src="@drawable/ic_launcher" /> <textview android:id="@+id/tv_traffic_name" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center_horizontal" android:text="名称" /> <textview android:id="@+id/tv_traffic_tx" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center_horizontal" android:text="上传" /> <textview android:id="@+id/tv_traffic_rx" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center_horizontal" android:text="下载" /></linearlayout> |
traffic_title.xml
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<?xml version="1.0" encoding="utf-8"?><linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_vertical" android:orientation="horizontal" > <textview android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center_horizontal" android:text="图标" /> <textview android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center_horizontal" android:text="名称" /> <textview android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center_horizontal" android:text="上传" /> <textview android:layout_width="0dip" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="center_horizontal" android:text="下载" /></linearlayout> |
希望本文所述对大家android程序设计有所帮助。
