intent跳转 android系统应用

Intent it = new Intent(Settings.ACTION_WIFI_SETTINGS);
it.putExtra("extra_prefs_show_button_bar", true);    //是否显示button bar
it.putExtra("extra_prefs_set_next_text", "返回");
it.putExtra("extra_prefs_set_back_text", "确认");
startActivityForResult(it, 202);     //直接进入手机中的wifi网络设置界面，返回时可以触发回调

Intent it = new Intent();
ComponentName cn = new ComponentName("com.android.settings","com.android.settings.wifi.WifiSettings");
it.setComponent(cn);
it.putExtra("extra_prefs_show_button_bar", true);    //是否显示button bar
it.putExtra("extra_prefs_set_next_text", "返回");
startActivity(it);