利用openURL接口來調用打電話功能。代碼還具備根據正則表達式判斷電話好嗎輸入的合法性。

1 - (void)makeCall:(NSString *)number 2 { 3 NSString *txt = number; 4 NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"[0-9]{4}[-]{0,1}[0-9]{4}?" options:NSRegularExpressionSearch error:nil]; 5 NSTextCheckingResult *result = [regex firstMatchInString:txt options:0 range:NSMakeRange(0, [txt length])]; 6 NSString *cleanedString = [[[txt substringWithRange:[result range]] componentsSeparatedByCharactersInSet:[[NSCharacterSet characterSetWithCharactersInString:@"0123456789-+()"] invertedSet]] componentsJoinedByString:@""]; 7 NSString *escapedPhoneNumber = [cleanedString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 8 NSURL *telURL = [NSURL URLWithString:[NSString stringWithFormat:@"tel://%@", escapedPhoneNumber]]; 9 [[UIApplication sharedApplication] openURL:telURL]; 10 }

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轉載于:https://www.cnblogs.com/ubersexual/archive/2013/03/29/2988789.html

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