editText获取文本kotlin [英] editText get text kotlin

问题描述

如何在kotlin中获取editText并与吐司一起显示.

How to get editText in kotlin and display with toast.

var editTextHello = findViewById(R.id.editTextHello)

我尝试过但是显示对象

Toast.makeText(this,editTextHello.toString(),Toast.LENGTH_SHORT).show()

推荐答案

您缺少从findViewById到EditText的View的转换:

var editTextHello = findViewById(R.id.editTextHello) as EditText

然后，您想在烤面包中显示EditText的text属性:

Then, you want to display the text property of the EditText in your toast:

Toast.makeText(this, editTextHello.text, Toast.LENGTH_SHORT).show()

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作为记录，这只是更惯用的Kotlin，等效于在EditText上调用getText()，就像您在Java中那样:

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For the record, this is just the more idiomatic Kotlin equivalent to calling getText() on your EditText, like you'd do it in Java:

Toast.makeText(this, editTextHello.getText(), Toast.LENGTH_SHORT).show()

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