android23

来源：http://gundumw100.iteye.com/blog/1051235

 1 /** 判断是否有网络 */  
 2     private boolean checkNetwork() {  
 3         boolean flag = false;  
 4         ConnectivityManager cwjManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);  
 5         if (cwjManager.getActiveNetworkInfo() != null)  
 6             flag = cwjManager.getActiveNetworkInfo().isAvailable();  
 7         if (!flag) {  
 8             Builder b = new AlertDialog.Builder(this).setTitle("没有可用的网络").setMessage("请开启GPRS或WIFI网络连接");  
 9             b.setPositiveButton("确定", new DialogInterface.OnClickListener() {  
10                 public void onClick(DialogInterface dialog, int whichButton) {  
11                     Intent mIntent = new Intent("/");  
12                     ComponentName comp = new ComponentName("com.android.settings",  
13                             "com.android.settings.WirelessSettings");  
14                     mIntent.setComponent(comp);  
15                     mIntent.setAction("<span class="hilite">android</span>.intent.action.VIEW");  
16                     startActivity(mIntent);  
17                 }  
18             }).setNeutralButton("取消", new DialogInterface.OnClickListener() {  
19                 public void onClick(DialogInterface dialog, int whichButton) {  
20                     dialog.cancel();  
21                 }  
22             }).create();  
23             b.show();  
24         }  
25   
26         return flag;  
27     }

 1 Android编程获取网络连接状态(3G/Wifi)及调用网络配置界面 
 2 http://www.cnblogs.com/mainroadlee/archive/2011/01/11/Android_Network_State_Checking_And_Setting.html 
 3 
 4 Java代码  
 5 /** 
 6      * 检测是否开启wify或gprs 
 7      * @param context 
 8      * @return 
 9      */  
10     public boolean checkNetwork(final Context context){  
11         ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);  
12   
13         //mobile 3G Data Network  
14         State mobile = manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();  
15         //wifi  
16         State wifi = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();  
17           
18         //如果3G网络和wifi网络都未连接，且不是处于正在连接状态 则进入Network Setting界面 由用户配置网络连接  
19         if(mobile==State.CONNECTED||mobile==State.CONNECTING)  
20             return true;  
21         if(wifi==State.CONNECTED||wifi==State.CONNECTING)  
22             return true;  
23           
24           
25         Builder b = new android.app.AlertDialog.Builder(context).setTitle("没有可用的网络").setMessage("请开启GPRS或WIFI网络连接");  
26         b.setPositiveButton("设置网络", new DialogInterface.OnClickListener() {  
27             public void onClick(DialogInterface dialog, int whichButton) {  
28                 context.startActivity(new Intent(Settings.ACTION_WIRELESS_SETTINGS));//进入无线网络配置界面  
29 //              context.startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS)); //进入手机中的wifi网络设置界面  
30             }  
31         }).setNeutralButton("取消", new DialogInterface.OnClickListener() {  
32             public void onClick(DialogInterface dialog, int whichButton) {  
33                 dialog.cancel();  
34             }  
35         }).create();  
36         b.show();  
37         return false;  
38           
39     }