英文:
Android Studio Throws an error if a user reaches the character limit
问题
我使用了maxLength方法。我希望您被通知“此处限制字符为10个字符”。
我知道用户无论如何都无法添加字符，但我仍然希望收到通知。
当用户仍在尝试添加字符时，如何获得通知以抛出错误？
英文:
I used the maxLength method. I want you to be notified "Limit characters here are 10 characters"
I know the user can't add characters anyway, but I still want to be notified.
How do i get when the user is still trying to add characters to throw him an error?
答案1
得分: 0
我猜你在谈论一个 EditText 视图。
你使用哪个？Android 的小部件还是 Material 的？
因为 Material TextField（https://material.io/develop/android/components/text-fields）有一个易于使用的字符计数器：
如果你还想额外显示错误（例如使用 Toast），你可以通过调用 yourTextInputLayout.getCounterMaxLength 来获取最大长度计数器并进行检查。
英文:
I suppose you are talking about an EditText view.
Which one do you use? The Android widget one or the Material one?
Because the Material TextField (https://material.io/develop/android/components/text-fields) has an easy to use character counter:
If you then want to additionally show an error (e.g. with a Toast) you can get the max length counter by calling yourTextInputLayout.getCounterMaxLenght and check it.
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