android - lineSpacingExtra 不适用于 TextView

Question

我有一个 TextView 自定义 TextAppearance 改变行间距:

<style name="CustomAppearance">
    <item name="android:lineSpacingExtra">30sp</item>
</style>

<TextView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="Lorem ipsum lorem ipsum lorem ipsum lorem ipsum..."
  android:textAppearance="@style/CustomAppearance" />

问题是 lineSpacingExtra 值在应用程序启动时被忽略。 (尽管如果我通过 style 而不是 textAppearance 属性使用 CustomAppearance 会起作用)

Answer 1

它不起作用，因为 lineSpacingExtra 在 TextAppearance 中不受支持:

Some common TextView attributes not included are lineHeight[Multiplier|Extra], lines, breakStrategy & hyphenationFrequency. TextAppearance works at the character level, not paragraph so attributes affecting the whole layout are not supported. TextView styling by Nick Butcher

我的解决方案是使用 MaterialTextView连同 lineHeight 属性:

<com.google.android.material.textview.MaterialTextView
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="Lorem ipsum lorem ipsum lorem ipsum lorem ipsum..."
          android:textAppearance="@style/CustomAppearance" />

<style name="CustomAppearance">
        <item name="lineHeight">30sp</item>
</style>