易采站长站为您分析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。，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;
}
}
