iOS代码技巧之判断设备及状态

来源：互联网发布：成都培训java多少人编辑：程序博客网时间：2024/06/05 11:46

目录[-]

一、判断设备

二、判断网络连接状态

三、设备不显示的解决办法

一、判断设备

//设备名称return [UIDevice currentDevice].name;//设备型号，只可得到是何设备，无法得到是第几代设备return [UIDevice currentDevice].model;//系统版本型号,如iPhone OS return [UIDevice currentDevice].systemVersion;//系统版本名称，如6.1.3return [UIDevice currentDevice].systemName;

//判断是否为iPhone#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)//判断是否为iPad#define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)//判断是否为ipod#define IS_IPOD ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"])//判断是否为iPhone5#define IS_IPHONE_5_SCREEN [[UIScreen mainScreen] bounds].size.height >= 568.0f && [[UIScreen mainScreen] bounds].size.height < 1024.0f

二、判断网络连接状态

1、导入SystemConfiguration.framework,并#import<SystemConfiguration/SCNetworkReachability.h>

2、判断设备是否联网

+ (BOOL)connectedToNetwork{        //创建零地址，0.0.0.0的地址表示查询本机的网络连接状态        struct sockaddr_storage zeroAddress;        bzero(&zeroAddress, sizeof(zeroAddress));    zeroAddress.ss_len = sizeof(zeroAddress);    zeroAddress.ss_family = AF_INET;        // Recover reachability flags    SCNetworkReachabilityRef defaultRouteReachability = SCNetworkReachabilityCreateWithAddress(NULL, (struct sockaddr *)&zeroAddress);    SCNetworkReachabilityFlags flags;        //获得连接的标志    BOOL didRetrieveFlags = SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags);    CFRelease(defaultRouteReachability);        //如果不能获取连接标志，则不能连接网络，直接返回    if (!didRetrieveFlags)    {        return NO;    }    //根据获得的连接标志进行判断    BOOL isReachable = flags & kSCNetworkFlagsReachable;    BOOL needsConnection = flags & kSCNetworkFlagsConnectionRequired;    return (isReachable&&!needsConnection) ? YES : NO;}

三、设备不显示的解决办法

PS:如果设备已经插上，但是XCode不显示当前设备，仍为iOS Device的状态，如下图所示

解决步骤

1.点击XCode右上角的Organizer->Devices,看自己的设备是否为绿灯状态，如果为黄灯或是没有灯，说明设备未连接好，请重新再插一次

2.如果设备已经连接好，但是还是不显示，则说明是系统版本不匹配，如果设备是ios5的系统，则XCode的iOS Deployment Target 必须是5.0或以上，XCode才可分辨此设备

选中TARGETS->Summary-Deployment Target 修改iOS版本号(假设设为6.1)

如果还是不识别，在PROJECT->Info->iOS Deployment Target下将版本号也修改为6.1

使用 UI_USER_INTERFACE_IDIOM() 进行区分 (ios 3.2 >=) 无法区分iphone和ipod

if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

// <define your constants here>

} else {

// <define your constants here>

}

区分目前UI_USER_INTERFACE_IDIOM()有2个返回值

UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad

UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone

使用 UIDevice.model 进行区分 (ios 2.0 >=)

NSString *deviceType = [UIDevice currentDevice].model;

if([deviceType isEqualToString:@"iPhone"]) {

//iPhone

}

else if([deviceType isEqualToString:@"iPod touch"]) {

//iPod Touch

}

else {

//iPad

}

使用系统的一个函数sysctlbyname 来获取设备名称

- (NSString *) platformString

{

size_t size;

sysctlbyname("hw.machine", NULL, &size, NULL, 0);

char *machine = malloc(size);

sysctlbyname("hw.machine", machine, &size, NULL, 0);

NSString *platform = [NSString stringWithUTF8String:machine];

free(machine);

if ([platform isEqualToString:@"iPhone1,1"]) return @"iPhone 1G";

if ([platform isEqualToString:@"iPhone1,2"]) return @"iPhone 3G";

if ([platform isEqualToString:@"iPhone2,1"]) return @"iPhone 3GS";

if ([platform isEqualToString:@"iPhone3,1"]) return @"iPhone 4";

if ([platform isEqualToString:@"iPhone3,3"]) return @"Verizon iPhone 4";

if ([platform isEqualToString:@"iPod1,1"]) return @"iPod Touch 1G";

if ([platform isEqualToString:@"iPod2,1"]) return @"iPod Touch 2G";

if ([platform isEqualToString:@"iPod3,1"]) return @"iPod Touch 3G";

if ([platform isEqualToString:@"iPod4,1"]) return @"iPod Touch 4G";

if ([platform isEqualToString:@"iPad1,1"]) return @"iPad";

if ([platform isEqualToString:@"iPad2,1"]) return @"iPad 2 (WiFi)";

if ([platform isEqualToString:@"iPad2,2"]) return @"iPad 2 (GSM)";

if ([platform isEqualToString:@"iPad2,3"]) return @"iPad 2 (CDMA)";

if ([platform isEqualToString:@"i386"]) return @"Simulator";

return @"";

}

在添加一些收集到的

//iPhone
    if ([deviceString isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";
    if ([deviceString isEqualToString:@"iPhone5,1"])    return @"iPhone 5(AT&T)";
    if ([deviceString isEqualToString:@"iPhone5,2"])    return @"iPhone 5(GSM/CDMA)";
//iPod Touch
    if ([deviceString isEqualToString:@"iPod5,1"])      return @"iPod Touch 5G";
//iPad
    if ([deviceString isEqualToString:@"iPad2,5"])      return @"iPad Mini (WiFi)";
    if ([deviceString isEqualToString:@"iPad2,6"])      return @"iPad Mini (GSM)";
    if ([deviceString isEqualToString:@"iPad2,7"])      return @"iPad Mini (CDMA)";
    if ([deviceString isEqualToString:@"iPad3,1"])      return @"iPad 3 (WiFi)";
    if ([deviceString isEqualToString:@"iPad3,2"])      return @"iPad 3 (GSM)";
    if ([deviceString isEqualToString:@"iPad3,3"])      return @"iPad 3 (CDMA)";
    if ([deviceString isEqualToString:@"iPad3,4"])      return @"iPad 4 (WiFi)";
    if ([deviceString isEqualToString:@"iPad3,5"])      return @"iPad 4 (GSM)";
    if ([deviceString isEqualToString:@"iPad3,6"])      return @"iPad 4 (CDMA)";
//Simulator
    if ([deviceString isEqualToString:@"i386"])         return @"Simulator";
    if ([deviceString isEqualToString:@"x86_64"])       return @"Simulator";

转载的没有那么多个机型逐个实验.所以不敢保证都正确.

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