Question

Does the documentation ( or anyone) talks about the dpi values of the default

• Large TextView {android:textAppearance="?android:attr/textAppearanceLarge"}
• Medium TextView {android:textAppearance="?android:attr/textAppearanceMedium"}
• Small TextView { android:textAppearance="?android:attr/textAppearanceSmall"}

widgets in the SDK ?

To put it in another way, can we replicate the appearance of these text views without using the android:textAppearance attribute?

Answer 1

See in the android sdk directory.

In \platforms\android-X\data\res\values\themes.xml:

    <item name="textAppearanceLarge">@android:style/TextAppearance.Large</item>
    <item name="textAppearanceMedium">@android:style/TextAppearance.Medium</item>
    <item name="textAppearanceSmall">@android:style/TextAppearance.Small</item>

In \platforms\android-X\data\res\values\styles.xml:

<style name="TextAppearance.Large">
    <item name="android:textSize">22sp</item>
</style>

<style name="TextAppearance.Medium">
    <item name="android:textSize">18sp</item>
</style>

<style name="TextAppearance.Small">
    <item name="android:textSize">14sp</item>
    <item name="android:textColor">?textColorSecondary</item>
</style>

TextAppearance.Large means style is inheriting from TextAppearance style, you have to trace it also if you want to see full definition of a style.

Link: http://developer.android.com/design/style/typography.html