如何从Apple手表拨打电话？

Question

有没有办法从WatchKit分机拨打电话？

以下是我的代码。

NSExtensionContext *ctx = [[NSExtensionContext alloc] init];
NSString *cleanedString = [[@"1234567890" componentsSeparatedByCharactersInSet:[[NSCharacterSet characterSetWithCharactersInString:@"0123456789-+()"] invertedSet]] componentsJoinedByString:@""];
NSURL *telURL = [NSURL URLWithString:[NSString stringWithFormat:@"tel:%@", cleanedString]];
[ctx openURL:telURL completionHandler:^(BOOL success) {
    NSLog(@"fun=%s after completion. success=%d", __func__, success);
}];