IconCache.java 文件源码

/**
 * 根据ActivityInfo绘制图标
 * @param info
 * @return
 */
public Drawable getFullResIcon(ActivityInfo info) {
    Resources resources;
    try {
        resources = mPackageManager.getResourcesForApplication(
                info.applicationInfo);
    } catch (PackageManager.NameNotFoundException e) {
        resources = null;
    }
    if (resources != null) {
        int iconId = info.getIconResource();
        if (iconId != 0) {
            return getFullResIcon(resources, iconId);
        }
    }

    return getFullResDefaultActivityIcon();
}