DatePickerDialog已涂黑androidx.fragment.app.DialogFragment中的按钮 [英] DatePickerDialog has blacked out buttons in androidx.fragment.app.DialogFragment

问题描述

这个简单的类:

class DateSelectionDialogFragment : DialogFragment() {

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        val calendar = Calendar.getInstance()
        val year = calendar.get(Calendar.YEAR)
        val month = calendar.get(Calendar.MONTH)
        val dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH)
        return DatePickerDialog(requireContext(), this, year, month, dayOfMonth)
    }
}

导致按钮行为异常.重要的是我没有为对话框指定任何样式. DialogFragment来自androidx.fragment.app软件包.

results in strangely behaving buttons. What's important I didn't specify any style for the dialog. The DialogFragment is from androidx.fragment.app package.

推荐答案

问题来自Theme.MaterialComponents.Light.NoActionBar.

这是很新的(和alpha版本)，它应该替代Theme.Design.Light.NoActionBar，但是正如我们看到的那样，它还不够好.

It's pretty new (and alpha) and it should replace Theme.Design.Light.NoActionBar but as we can see, it's not good enough yet.

您的解决方案是只使用Theme.Design.Light.NoActionBar.

Your solution would be to just use Theme.Design.Light.NoActionBar.

但是如果您真的要使用Theme.MaterialComponents.Light.NoActionBar ...问题是由主题中的此设置引起的:

But if you really want to use Theme.MaterialComponents.Light.NoActionBar... The problem is caused by this setting in theme:

<item name="viewInflaterClass">com.google.android.material.theme.MaterialComponentsViewInflater</item>

您可以将其替换为另一个*ViewInflater，但没有太多选择，但是:

You could replace it with another *ViewInflater and there is not much choice but:

<item name="viewInflaterClass">androidx.appcompat.app.AppCompatViewInflater</item>

它可以工作，但是我不会过分依赖，因为从其他软件包中使用Inflater可能会引起奇怪的问题.

It works, but I would not rely on it too much, as using Inflater from another package might cause weird issues.

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