警告对话框不适应黑暗模式和 non-dark 模式

Question

为什么我的警报对话框不适应我的 phone 的深色模式？当在我的 phone 中激活深色模式时，两个按钮的文本几乎看不见，而标题和消息的颜色是颠倒的。为什么按钮的颜色也不反转？该图标在 non-dark 模式下也显示不佳。如何解决所有这些问题？

  val builder = AlertDialog.Builder(this)
  builder.setTitle(getString(R.string.title))
  builder.setMessage(getString(R.string.message))

  builder.setPositiveButton(getString(R.string.positive)) { dialog, which ->
        
    Toast.makeText(applicationContext, getString(R.string.pos_toast), Toast.LENGTH_LONG).show()
  }

  builder.setNegativeButton(getString(R.string.negative)) { dialog, which ->

    Toast.makeText(applicationContext, getString(R.string.negative_toast), Toast.LENGTH_LONG).show()
  }

  builder.setIcon(android.R.drawable.ic_dialog_alert)
  builder.show()

我的stiles.xml:

<resources>

  <!-- Base application theme. -->
  <style name="MyTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
  </style>

  <style name="generalnotitle" parent="MyTheme">
    <item name="android:windowNoTitle">true</item>
  </style>

</resources>

Answer 1

由于您使用的是 Material 组件主题，只需使用 MaterialAlertDialogBuilder 而不是 AlertDialog.Builder:

    MaterialAlertDialogBuilder(this)
            .setTitle("Title")
            .setMessage("Message")
            .setNegativeButton("CANCEL") { dialog, which ->
                // Respond to neutral button press
            }
            .setPositiveButton("OK") { dialog, which ->
                // Respond to positive button press
            }
            .show()

按钮的默认文本颜色基于此选择器：

<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:alpha="1.00" android:color="?attr/colorPrimary" android:state_checkable="true" android:state_checked="true" android:state_enabled="true"/>
  <item android:alpha="0.60" android:color="?attr/colorOnSurface" android:state_checkable="true" android:state_checked="false" android:state_enabled="true"/>
  <item android:alpha="1.00" android:color="?attr/colorPrimary" android:state_enabled="true"/>
  <item android:alpha="0.38" android:color="?attr/colorOnSurface"/>
</selector>

只需检查在您的应用主题中为深色模式定义的 colorPrimary。

如果您想更改按钮的文本颜色，您可以使用以下方法覆盖 colorPrimary：

MaterialAlertDialogBuilder(this, R.style.Theme_MyApp_Dialog_Alert)

与：

<style name="Theme.MyApp.Dialog.Alert" parent="@style/ThemeOverlay.MaterialComponents.MaterialAlertDialog">

    <!-- Text Color for Buttons -->
    <item name="colorPrimary">@color/...</item>

</style>

警告对话框不适应黑暗模式和 non-dark 模式

Alert Dialog doesn't adapt to Dark Mode and non-dark mode

android

android-theme

android-alertdialog

kotlin

material-components-android