將數據從Kotlin活動傳遞到Java DialogFragment

Question

需要幫助，我一直在嘗試尋找一種方法，以便可以將數據從kotlin傳遞到DialogFragment的newInstance。 下面的kotlin代碼

private var messageDialog: MessageDialog? = null

override fun onLoginFail(value: String?) {
    //TODO:find hpw to implement this
    messageDialog = MessageDialog.newInstance(getString(R.string.sign_title),getString(R.string.signin_msg,value)
    messageDialog?.show(supportFragmentManager,null)
}

下面的DialogFragment

public static MessageDialog newInstance(String title, String msg){
    Bundle args = new Bundle();
    args.putString(EXTRA_MSG,msg);
    args.putString(EXTRA_TITLE,title);
    MessageDialog messageDialog = new MessageDialog();
    messageDialog.setArguments(args);
    return messageDialog;
}

Answer 1

在kotlin中，我們使用伴隨對象來制作靜態方法，這是您可以根據需要執行的操作：

在消息對話框中：

 companion object {
    /**
     * Use this factory method to create a new instance of
     * this fragment using the provided parameters.
     *
     * @return A new instance of fragment Message Dialog Fragment.
     */
    @JvmStatic
    fun newInstance(title: String, msg: String) = MessageDialog().apply {
        arguments = Bundle().apply {
            putString(EXTRA_TITLE, tile) 
            putString(EXTRA_MSG, msg)
        }
    }
}

在“ 消息對話框片段” onCreate方法中：

var title =""
var msg = ""

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)

    arguments?.let {
        title= it.getString(EXTRA_TITLE)
        msg = it.getString(EXTRA_MSG)
    }

}

現在，您可以調用MessageDialog.newInstance("Sample title","Sample msg")