这里有新鲜出炉的精品教程,程序狗速度看过来!
Android是一种基于Linux的自由及开放源代码的操作系统,主要使用于移动设备,如智能手机和平板电脑,由Google公司和开放手机联盟领导及开发。尚未有统一中文名称,中国大陆地区较多人使用“安卓”或“安致”。
这篇文章主要介绍了Android编程实现简单流量管理功能的方法,结合实例形式分析了Android实现流量监控所涉及的功能模块与布局技巧,需要的朋友可以参考下
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:
- 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
- <?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
- <?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
- <?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。
来源: http://www.phperz.com/article/17/0914/348994.html