ContextUtils.java 文件源码

/**
 * Obtain a {@link SubscriptionManager} instance associated with specified {@link Context}
 *
 * @param context Context
 * @return {@link SubscriptionManager} associated with specified {@link Context}
 * @throws InvalidContextException if {@link SubscriptionManager} can't be obtained
 *                                 from specified {@link Context}
 */
@NonNull
@RequiresApi(Build.VERSION_CODES.LOLLIPOP_MR1)
public static SubscriptionManager getSubscriptionManager(@NonNull Context context) {
    return validate(context.getSystemService(Context.TELEPHONY_SUBSCRIPTION_SERVICE));
}