android如何设置网络

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>

 

private boolean NetWorkStatus() {        boolean netSataus = false;        ConnectivityManager cwjManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);        cwjManager.getActiveNetworkInfo();        if (cwjManager.getActiveNetworkInfo() != null) {            netSataus = cwjManager.getActiveNetworkInfo().isAvailable();        }        if (netSataus) {            Builder b = new AlertDialog.Builder(this).setTitle("没有可用的网络")                    .setMessage("是否对网络进行设置？");            b.setPositiveButton("是", new DialogInterface.OnClickListener() {                public void onClick(DialogInterface dialog, int whichButton) {                    Intent mIntent = new Intent("/");                    ComponentName comp = new ComponentName(                            "com.android.settings",                            "com.android.settings.WirelessSettings");                    mIntent.setComponent(comp);                    mIntent.setAction("android.intent.action.VIEW");                    startActivityForResult(mIntent,0);  // 如果在设置完成后需要再次进行操作，可以重写操作代码，在这里不再重写                }            }).setNeutralButton("否", new DialogInterface.OnClickListener() {                public void onClick(DialogInterface dialog, int whichButton) {                    dialog.cancel();                }            }).show();        }        return netSataus;    }

 通过上面的代码即可完成对网络状态的判断！

该日志标签: 互联网, Android, 检查网络

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仅有一条评论 »
pan
 November 15th, 2011 at 01:36 pm
以上代码在2.X系统下运行没问题，但是在3.X或者4.0下运行崩溃

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package com.dx;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.NetworkInfo.State;
import android.os.Bundle;
import android.widget.TextView;

public class Main extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//        setContentView(R.layout.main);
        TextView textView = new TextView(this);
        textView.setText("网络检测");
        setContentView(textView);

        if(checkNetWorkInfo()){
            goToNetWork();
        };
    }

    private boolean goToNetWork() {
        // TODO Auto-generated method stub
        ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo info = connectivityManager.getActiveNetworkInfo();
        if(info == null || !info.isAvailable()){
            new AlertDialog.Builder(this).setMessage("没有可以使用的网络").setPositiveButton("Ok", null).show();
            return false;
        }
        else{
            new AlertDialog.Builder(this).setMessage("网络正常可以使用").setPositiveButton("Ok", null).show();
            return true;
        }


    }

    private boolean checkNetWorkInfo() {
        // TODO Auto-generated method stub
        ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        State wifi  = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();
        if(wifi != null){
            new AlertDialog.Builder(this).setMessage(wifi.toString()).setPositiveButton("wifi", null).show();//显示wifi网络连接状态
            return true;

        }else{
            State mobile  = manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();
            if(mobile != null){
                new AlertDialog.Builder(this).setMessage(mobile.toString()).setPositiveButton("3G", null).show();//显示3G网络连接状态
                return true;
            }
        }
        return false;

    }
}