iOS 直接撥打號碼

iOS 直接撥打號碼

直接代碼：

類

 

// ACETelPrompt.h

 

 

#import

 

@interface ACETelPrompt : NSObject

 

typedef void (^ACETelCallBlock)(NSTimeInterval duration);

typedef void (^ACETelCancelBlock)(void);

 

+ (BOOL)callPhoneNumber:(NSString *)phoneNumber

call:(ACETelCallBlock)callBlock

cancel:(ACETelCancelBlock)cancelBlock;

 

@end

// ACETelPrompt.m

 

#import "ACETelPrompt.h"

#import "AppDelegate.h"

 

// the time required to launch the phone app and come back (will be substracted to the duration)

#define kCallSetupTime 3.0

 

@interface ACETelPrompt ()

@property (nonatomic, strong) NSDate *callStartTime;

 

@property (nonatomic, copy) ACETelCallBlock callBlock;

@property (nonatomic, copy) ACETelCancelBlock cancelBlock;

@end

 

@implementation ACETelPrompt

 

+ (instancetype)sharedInstance

{

static ACETelPrompt *_instance = nil;

static dispatch_once_t oncePredicate;

dispatch_once(&oncePredicate, ^{

_instance = [[self alloc] init];

});

return _instance;

}

 

+ (BOOL)callPhoneNumber:(NSString *)phoneNumber

call:(ACETelCallBlock)callBlock

cancel:(ACETelCancelBlock)cancelBlock

{

if ([self validPhone:phoneNumber]) {

 

ACETelPrompt *telPrompt = [ACETelPrompt sharedInstance];

 

// observe the app notifications

[telPrompt setNotifications];

 

// set the blocks

telPrompt.callBlock = callBlock;

telPrompt.cancelBlock = cancelBlock;

 

// clean the phone number

NSString *simplePhoneNumber =

[[phoneNumber componentsSeparatedByCharactersInSet:

[[NSCharacterSet decimalDigitCharacterSet] invertedSet]] componentsJoinedByString:@""];

 

// call the phone number using the telprompt scheme

NSString *stringURL = [@"telprompt://" stringByAppendingString:simplePhoneNumber];

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:stringURL]];

 

return YES;

}

return NO;

}

 

+ (BOOL)validPhone:(NSString*) phoneString

{

NSTextCheckingType type = [[NSTextCheckingResult phoneNumberCheckingResultWithRange:NSMakeRange(0, phoneString.length)

phoneNumber:phoneString] resultType];

return type == NSTextCheckingTypePhoneNumber;

}

 

 

#pragma mark - Notifications

 

- (void)setNotifications

{

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(applicationDidEnterBackground:)

name:UIApplicationDidEnterBackgroundNotification

object:nil];

 

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(applicationDidBecomeActive:)

name:UIApplicationDidBecomeActiveNotification

object:nil];

 

}

 

 

#pragma mark - Events

 

- (void)applicationDidEnterBackground:(NSNotification *)notification

{

// save the time of the call

self.callStartTime = [NSDate date];

}

 

- (void)applicationDidBecomeActive:(NSNotification *)notification

{

// now it's time to remove the observers

[[NSNotificationCenter defaultCenter] removeObserver:self];

 

if (self.callStartTime != nil) {

 

// I'm coming back after a call

if (self.callBlock != nil) {

self.callBlock(-([self.callStartTime timeIntervalSinceNow]) - kCallSetupTime);

}

 

// reset the start timer

self.callStartTime = nil;

 

} else if (self.cancelBlock != nil) {

 

// user didn't start the call

self.cancelBlock();

}

}

 

調用

 

- (IBAction)connectUs:(id)sender {

[ACETelPrompt callPhoneNumber:@"020-38880808080"

call:^(NSTimeInterval duration) {

NSLog(@"User made a call of %.1f seconds", duration);

 

} cancel:^{

NSLog(@"User cancelled the call");

}];

}

 

@end