第一种

Intent intent = new Intent();intent.setAction("android.net.wifi.PICK_WIFI_NETWORK");startActivity(intent);

第二种

startActivity(new Intent(android.provider.Settings.ACTION_WIFI_SETTINGS));

第三种

Intent i = new Intent();if(android.os.Build.VERSION.SDK_INT >= 11){    //Honeycomb    i.setClassName("com.android.settings", "com.android.settings.Settings$WifiSettingsActivity"); }else{    //other versions     i.setClassName("com.android.settings"     , "com.android.settings.wifi.WifiSettings"); } startActivity(i);

第四种

Intent wifiSettingsIntent = new Intent("android.settings.WIFI_SETTINGS");  startActivity(wifiSettingsIntent);