ios開發過程中 設備類型的判斷 系統版本號的判斷

簡單地判斷運行的設備的類型

/**
 *  判斷是否是iphone
 *
 *  @return YES 是
 */
+ (BOOL)isIphone
{
    NSString* deviceType = [UIDevice currentDevice].model;
    return [deviceType rangeOfString:@"iPhone"].length > 0;
}
/**
 *  判斷是否是ipod
 *
 *  @return YES 是
 */
+ (BOOL)isIpod
{
    NSString* deviceType = [UIDevice currentDevice].model;
    return [deviceType rangeOfString:@"iPod"].length > 0;
}

當然上邊的只是簡單的判斷 更詳細的判斷可以用下邊的方法，可以判斷詳細的設備信息，當然我的信息可能不是很全，每年都會新增很多不同的版本具體的可以自己擴展

//手機型號（這跟系統獲取的不一樣，這是獲取iPhone5，4，6之類的）要導入

- (NSString*)deviceString
{
    // 可能需要更新
    // 需要#import "sys/utsname.h"
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    if ([deviceString isEqualToString:@"iPhone1,1"])    return @"iPhone 1G";
    if ([deviceString isEqualToString:@"iPhone1,2"])    return @"iPhone 3G";
    if ([deviceString isEqualToString:@"iPhone2,1"])    return @"iPhone 3GS";
    if ([deviceString isEqualToString:@"iPhone3,1"])    return @"iPhone 4";
    if ([deviceString isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";
    if ([deviceString isEqualToString:@"iPhone5,2"])    return @"iPhone 5";
    if ([deviceString isEqualToString:@"iPhone3,2"])    return @"Verizon iPhone 4";
    if ([deviceString isEqualToString:@"iPod1,1"])      return @"iPod Touch 1G";
    if ([deviceString isEqualToString:@"iPod2,1"])      return @"iPod Touch 2G";
    if ([deviceString isEqualToString:@"iPod3,1"])      return @"iPod Touch 3G";
    if ([deviceString isEqualToString:@"iPod4,1"])      return @"iPod Touch 4G";
    if ([deviceString isEqualToString:@"iPad1,1"])      return @"iPad";
    if ([deviceString isEqualToString:@"iPad2,1"])      return @"iPad 2 (WiFi)";
    if ([deviceString isEqualToString:@"iPad2,2"])      return @"iPad 2 (GSM)";
    if ([deviceString isEqualToString:@"iPad2,3"])      return @"iPad 2 (CDMA)";
    if ([deviceString isEqualToString:@"i386"])         return @"Simulator";
    if ([deviceString isEqualToString:@"x86_64"])       return @"Simulator";
    NSLog(@"NOTE: Unknown device type: %@", deviceString);
    return deviceString;
}

判斷設備的版本號

/**
 *  判斷是否是ios8
 *
 *  @return YES 是
 */
+ (BOOL)isIos8
{
    return [[UIDevice currentDevice].systemVersion floatValue] >= 8.0;
}

雖然上邊可以把相應地方法寫成類方法，方便大家快速地調用，但是還是沒有抽成宏的方便

#define iPhone ([[UIDevice currentDevice].model rangeOfString:@"iPhone"].length > 0)
#define iPod  ([[UIDevice currentDevice].model rangeOfString:@"iPod"].length > 0)
#define ios8 ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0)

這樣的話就更加的方便了