我决定在Android上尝试使用重大警报dialogs。我遇到的问题是尝试应用某些样式时。检查文档,我发现了这个:
<item name="materialAlertDialogTheme">@style/ThemeOverlay.MaterialComponents.MaterialAlertDialog</item>
所以我决定尝试一下:
<style name="BaseTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
<item name="materialAlertDialogTheme">@style/Theme.App.MaterialDialogAlert</item>
</style>
<style name="Theme.App.MaterialDialogAlert" parent="ThemeOverlay.MaterialComponents.Dialog.Alert">
<!-- FIXME: this does not work. it does not change the title appearance. -->
<!-- <item name="materialAlertDialogTitleTextStyle">@style/TextAppearance.App.MaterialDialogAlert.Title.Text</item>-->
<!-- FIXME: this change only the title font, not the message appearance -->
<item name="android:fontFamily">@font/nunito_semi_bold</item>
<item name="buttonBarPositiveButtonStyle">@style/Widget.App.Button.TextButton</item>
<item name="buttonBarNegativeButtonStyle">@style/Widget.App.Button.TextButton</item>
</style>
<style name="TextAppearance.App.MaterialDialogAlert.Title.Text" parent="MaterialAlertDialog.MaterialComponents.Title.Text">
<item name="android:fontFamily">@font/nunito_semi_bold</item>
</style>
但是到目前为止,我可以成功设置按钮的样式。关于标题和消息,我有一些问题。现在,我可以通过以下方式将某些样式应用于标题:
<item name="android:fontFamily">@font/nunito_semi_bold</item>
但是我认为这不是正确的方法。首先,这不会将字体应用于消息部分。其次,我想应用其他文本样式,一种用于标题,一种用于消息部分。
我也尝试过检查这种样式:MaterialAlertDialog.MaterialComponents.Title.Text
,可以在某处看到此项目的应用:
<item name="android:textAppearance">?attr/textAppearanceSubtitle1</item>
所以我决定在基本主题中声明这一点:
<style name="BaseTheme" parent="Theme.MaterialComponents.DayNight.NoActionBar">
<item name="textAppearanceSubtitle1">@style/TextAppearance.App.Subtitle1</item>
</style>
<style name="TextAppearance.App.Subtitle1" parent="TextAppearance.MaterialComponents.Subtitle1">
<item name="android:fontFamily">@font/nunito_semi_bold</item>
</style>
但没有任何改变。
所以我的问题是:
您可以使用此样式来自定义标题和正文:
<style name="Theme.App.MaterialDialogAlert" parent="ThemeOverlay.MaterialComponents.Dialog.Alert">
<!-- Title -->
<item name="materialAlertDialogTitleTextStyle">@style/MyTitle_MaterialAlertDialog</item>
<!-- Body -->
<item name="materialAlertDialogBodyTextStyle">@style/BodyMaterialAlertDialog.MaterialComponents.Body.Text</item>
</style>
然后定义标题:
的样式<style name="MyTitle_MaterialAlertDialog" parent="@style/MaterialAlertDialog.MaterialComponents.Title.Text">
<item name="android:textAppearance">@style/MyTitle_TextAppearance.MaterialComponents.Subtitle1</item>
</style>
<style name="MyTitle_TextAppearance.MaterialComponents.Subtitle1" parent="TextAppearance.MaterialComponents.Subtitle1">
<item name="fontFamily">.....</item>
<item name="android:fontFamily">....</item>
<item name="android:textStyle">.....</item>
</style>
然后定义body:
<style name="BodyMaterialAlertDialog.MaterialComponents.Body.Text" parent="MaterialAlertDialog.MaterialComponents.Body.Text">
<item name="android:textAppearance">@style/BodyTextAppearance</item>
</style>
<style name="BodyTextAppearance" parent="@style/TextAppearance.MaterialComponents.Body2">
<item name="fontFamily">.....</item>
<item name="android:fontFamily">....</item>
<item name="android:textStyle">.....</item>
<item name="android:textSize">....</item>
</style>