android - 以编程方式获取主题属性

Question

如何以编程方式获取主题属性的值？

例如:

主题:

<style name="Theme">
    ... truncated ....
    <item name="textAppearanceLarge">@android:style/TextAppearance.Large</item>
</style>

代码:

int textSize = ???? // how do I get Theme.textAppearanceLarge? 

编辑:没有解决问题的答案太多。

Answer 1

使用这个函数:

myView.setTextAppearance(Context context, int resid)
//Sets the text color, size, style, hint color, and highlight color from the specified TextAppearance resource.

参见:http://developer.android.com/reference/android/widget/TextView.html#setTextAppearance%28android.content.Context,%20int%29

在 TextView.java 中，上面的函数是这样做的:

public void setTextAppearance(Context context, int resid) {
    TypedArray appearance =
        context.obtainStyledAttributes(resid,
                                       com.android.internal.R.styleable.TextAppearance);

    int color;
    ColorStateList colors;
    int ts;

    .
    .
    .
    ts = appearance.getDimensionPixelSize(com.android.internal.R.styleable.
                                          TextAppearance_textSize, 0);
    if (ts != 0) {
        setRawTextSize(ts);
    }

    int typefaceIndex, styleIndex;

    typefaceIndex = appearance.getInt(com.android.internal.R.styleable.
                                      TextAppearance_typeface, -1);
    styleIndex = appearance.getInt(com.android.internal.R.styleable.
                                   TextAppearance_textStyle, -1);

    setTypefaceByIndex(typefaceIndex, styleIndex);
    appearance.recycle();
}

这是另一种方法。请确保回收外观(TypedArray 对象)。希望这对您有所帮助!