java - 如何重新启动或恢复 Activity

Question

如果连接被禁用，当我更改 WiFi 设置菜单时，我想重新启动 Activity 。这是我的代码(onCreate 方法):

        boolean status = ConnectionManager.getConnectivityStatusString(this);

    if(status){
        networkStatus.setText("SEI CONNESSO AD INTERNET !");
    }else{
        networkStatus.setText("connection not present");
        FragmentManager fragmentManager = getSupportFragmentManager();
        MsgAlertConnection newAlertConnection = new MsgAlertConnection();
        newAlertConnection.show(fragmentManager, "Fragment");
    }

这是显示对话框的代码:

    @Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Use the Builder class for convenient dialog construction
    // 1. Instantiate an AlertDialog.Builder with its constructor
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    // 2. Chain together various setter methods to set the dialog characteristics
    builder.setTitle("Connection Error !")
           .setMessage("Please check your Internet Connection for start the application.")
           .setPositiveButton("Back to Settings", new DialogInterface.OnClickListener() {
               public void onClick(DialogInterface dialog, int id) {
                   Intent intent=new Intent();
                   intent.setComponent(new ComponentName("com.android.settings", "com.android.settings.WirelessSettings"));
                   startActivity(intent);
               }
           });
    // Create the AlertDialog object and return it
    return builder.create();
}

当用户将 wifi 网络更改为“ON”时，我如何重新启动或恢复应用程序以检查网络连接？

谢谢

Answer 1

我认为，如果您需要重新启动 Activity - 那么您的设计就有问题 - 无论如何

startActivity(getIntent());
finish();

这样就可以了