Kotlin单击打开文件 [英] Kotlin Open file on button click

问题描述

我是Kotlin的新手.有人可以告诉我如何在单击按钮时打开文件吗?是否有一些命令，如:

I am new to Kotlin. Can someone please tell me how to open a file on click of a button? Is there some command like:

Button.setOnAction {
File.Open(*//specified file path*)  
        }

我正在使用 Kotlin进行Java开发，而不是用于Andriod.我有一个 .fxml 文件，在其中定义了此按钮，我需要在kotlin(.kt)文件中定义以上功能.谢谢你.

I am using Kotlin for Java development and not for andriod. I have a .fxml file where I have defined this button and I need to define the above feature in a kotlin (.kt) file. Thank you.

推荐答案

活动中

btnBack.setOnClickListener {

    val intent = Intent()
            .setType("*/*")
            .setAction(Intent.ACTION_GET_CONTENT)

    startActivityForResult(Intent.createChooser(intent, "Select a file"), 111)

}

仍在您的活动中，插入该行以获取结果

still in your activity, insert this to catch the result

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    if (requestCode == 111 && resultCode == RESULT_OK) {
        val selectedFile = data?.data //The uri with the location of the file
    }
}

参考

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