夏树正茂

花有重开日，人无再少年.

App中拨打电话一点小总结

| Comments

App内发起电话拨打的一点小技巧

一、拨打电话

在App内发起电话拨打主要有两种方式：

1、利用这种方式发起的电话拨打，通话结束后不会直接返回App内，而是停留在通信录里面：

 NSString *str = [[NSString alloc] initWithFormat:@"tel:%@",@"131xxxx1909"];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];

2、利用UIWebView实现电话拨打，会弹出拨打提示，并且拨打完成后会返回App内：

NSString *phone = @"131****1909";
NSString *cleanedString =[[phone componentsSeparatedByCharactersInSet:[[NSCharacterSet characterSetWithCharactersInString:@"0123456789-+()"] invertedSet]] componentsJoinedByString:@""];
NSString *escapedPhoneNumber = [cleanedString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *telURL = [NSURL URLWithString:[NSString stringWithFormat:@"tel://%@",escapedPhoneNumber]];
UIWebView *mCallWebview = [[UIWebView alloc] init] ;

[self.view addSubview:mCallWebview];
[mCallWebview loadRequest:[NSURLRequest requestWithURL:telURL]];

二、检测通话时间

利用CTCallCenter我们可以检测在使用App期间拨打电话出去以及电话打入的时机，以及通话结束的时机。实现如下：

 #import <CoreTelephony/CTCallCenter.h>
 #import <CoreTelephony/CTCall.h>

 @interface AppDelegate : UIResponder<UIApplicationDelegate>
 @property (nonatomic, strong) CTCallCenter *callCenter;
 @end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  self.callCenter = [[CTCallCenter alloc] init];
  [self handleCall];
  return YES;
}

-(void)handleCall
{
   self.callCenter.callEventHandler = ^(CTCall *call) {
    if ([call.callState isEqualToString: CTCallStateConnected])
    {
        NSLog(@"接通电话");
    }
    else if ([call.callState isEqualToString: CTCallStateDialing])
    {
        NSLog(@"发起呼叫");
    }
    else if ([call.callState isEqualToString: CTCallStateDisconnected])
    {
        NSLog(@"结束电话");
    }
    else if ([call.callState isEqualToString: CTCallStateIncoming])
    {
        NSLog(@"打入电话");
    }
   };
}

Comments