Android打開網絡設置連接網絡

想訪問網絡狀態，首先得添加權限<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>  
State state = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).getState();  
  if(State.CONNECTED==state){  
   Log.i("通知", "GPRS網絡已連接");  
  }  
    
  state = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).getState();  
  if(State.CONNECTED==state){  
   Log.i("通知", "WIFI網絡已連接");  
  }  
// 跳轉到無線網絡設置界面  
  startActivity(new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS));  
  // 跳轉到無限wifi網絡設置界面  
  startActivity(new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS));