android中实现简单的流量管理功能

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>