PrefUtil.java 文件源码

static void setLayoutResource(
    Context context, Preference preference, @Nullable AttributeSet attrs) {
  boolean foundLayout = false;
  if (attrs != null) {
    for (int i = 0; i < attrs.getAttributeCount(); i++) {
      final String namespace = ((XmlResourceParser) attrs).getAttributeNamespace(0);
      if (namespace.equals("http://schemas.android.com/apk/res/android")
          && attrs.getAttributeName(i).equals("layout")) {
        foundLayout = true;
        break;
      }
    }
  }

  boolean useStockLayout = false;
  if (attrs != null) {
    TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.Preference, 0, 0);
    try {
      useStockLayout = a.getBoolean(R.styleable.Preference_useStockLayout, false);
    } finally {
      a.recycle();
    }
  }

  if (!foundLayout && !useStockLayout) {
    preference.setLayoutResource(R.layout.md_preference_custom);
  }
}