MaterialDialog.java 文件源码

/**
 * Sets the fonts used in the dialog, by file names. This also uses TypefaceHelper in order to
 * avoid any un-needed allocations (it recycles typefaces for you).
 *
 * @param medium The name of font in assets/fonts used on titles and action buttons (null uses
 *     device default). E.g. [your-project]/app/main/assets/fonts/[medium]
 * @param regular The name of font in assets/fonts used everywhere else, like content and list
 *     items (null uses device default). E.g. [your-project]/app/main/assets/fonts/[regular]
 * @return The Builder instance so you can chain calls to it.
 */
public Builder typeface(@Nullable String medium, @Nullable String regular) {
  if (medium != null && !medium.trim().isEmpty()) {
    this.mediumFont = TypefaceHelper.get(this.context, medium);
    if (this.mediumFont == null) {
      throw new IllegalArgumentException("No font asset found for \"" + medium + "\"");
    }
  }
  if (regular != null && !regular.trim().isEmpty()) {
    this.regularFont = TypefaceHelper.get(this.context, regular);
    if (this.regularFont == null) {
      throw new IllegalArgumentException("No font asset found for \"" + regular + "\"");
    }
  }
  return this;
}