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从诺亚·威瑟斯彭在从我的iPhone应用程序拨打电话

  

模拟器不支持大量的iOS的URL方案,包括为手机,地图,YouTube和SMS的应用程序。这也是像iPod touch和iPad上,不具有电话功能的设备的情况;经由-openURL使用任何URL方案之前:,应使用-canOpenURL :,这将返回YES检查支持该方案或NO根据当前设备是否支持您使用URL方案

所以查询[[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"tel://"]] 发现如果该装置可进行呼叫。

iphonedevelopment.blogspot.com

#import <sys/utsname.h>

enum {
    MODEL_IPHONE_SIMULATOR,
    MODEL_IPOD_TOUCH,
    MODEL_IPHONE,
    MODEL_IPHONE_3G
};

@interface DeviceDetection : NSObject

+ (uint) detectDevice;
+ (NSString *) returnDeviceName:(BOOL)ignoreSimulator;

@end


@implementation DeviceDetection

+ (uint) detectDevice {
    NSString *model= [[UIDevice currentDevice] model];

    // Some iPod Touch return "iPod Touch", others just "iPod"

    NSString *iPodTouch = @"iPod Touch";
    NSString *iPodTouchLowerCase = @"iPod touch";
    NSString *iPodTouchShort = @"iPod";

    NSString *iPhoneSimulator = @"iPhone Simulator";

    uint detected;

    if ([model compare:iPhoneSimulator] == NSOrderedSame) {
        // iPhone simulator
        detected = MODEL_IPHONE_SIMULATOR;
    } else if ([model compare:iPodTouch] == NSOrderedSame) {
        // iPod Touch
        detected = MODEL_IPOD_TOUCH;
    } else if ([model compare:iPodTouchLowerCase] == NSOrderedSame) {
        // iPod Touch
        detected = MODEL_IPOD_TOUCH;
    } else if ([model compare:iPodTouchShort] == NSOrderedSame) {
        // iPod Touch
        detected = MODEL_IPOD_TOUCH;
    } else {
        // Could be an iPhone V1 or iPhone 3G (model should be "iPhone")
        struct utsname u;

        // u.machine could be "i386" for the simulator, "iPod1,1" on iPod Touch, "iPhone1,1" on iPhone V1 & "iPhone1,2" on iPhone3G

        uname(&u);

        if (!strcmp(u.machine, "iPhone1,1")) {
            detected = MODEL_IPHONE;
        } else {
            detected = MODEL_IPHONE_3G;
        }
    }
    return detected;
}


+ (NSString *) returnDeviceName:(BOOL)ignoreSimulator {
    NSString *returnValue = @"Unknown";

    switch ([DeviceDetection detectDevice]) {
        case MODEL_IPHONE_SIMULATOR:
            if (ignoreSimulator) {
                returnValue = @"iPhone 3G";
            } else {
                returnValue = @"iPhone Simulator";
            }
            break;
        case MODEL_IPOD_TOUCH:
            returnValue = @"iPod Touch";
            break;
        case MODEL_IPHONE:
            returnValue = @"iPhone";
            break;
        case MODEL_IPHONE_3G:
            returnValue = @"iPhone 3G";
            break;
        default:
            break;
    }        
    return returnValue;
}

@end

下面是我用它来检查设备模型简单的代码片段是一个电话,而不是一个模拟器,以确保它可以拨打电话。

if ([[[UIDevice currentDevice] model] rangeOfString:@"Phone"].location != NSNotFound &&
    [[[UIDevice currentDevice] model] rangeOfString:@"Simulator"].location == NSNotFound ) {
            [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"tel:%@", number]  ] ];
}
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