iOS獲取設(shè)備各種信息

一、目錄結(jié)構(gòu):

獲取屏幕寬度與高度

獲取設(shè)備版本號

獲取iPhone名稱

獲取app版本號

獲取電池電量

獲取當(dāng)前系統(tǒng)名稱

獲取當(dāng)前系統(tǒng)版本號

獲取通用的唯一識別碼UUID

獲取當(dāng)前設(shè)備IP

獲取總內(nèi)存大小

獲取當(dāng)前可用內(nèi)存

獲取精準(zhǔn)電池電量

獲取電池當(dāng)前的狀態(tài)（共有4種狀態(tài)）

獲取設(shè)備當(dāng)前的語言

二、具體內(nèi)容

1. 獲取屏幕寬度與高度

/// 屏幕寬度+ (CGFloat)getDeviceScreenWidth {

return [UIScreen mainScreen].bounds.size.width;

}

/// 屏幕高度+ (CGFloat)getDeviceScreenHeight {

return [UIScreen mainScreen].bounds.size.height;

}

[UIScreen mainScreen].bounds.size.width用的很普遍，一般來說定義成宏更好，然后根據(jù)屏幕寬高進(jìn)行尺寸的適配。

2. 獲取設(shè)備版本號

+ (NSString *)getDeviceName {

// 需要#import "sys/utsname.h"?

? struct utsname systemInfo;?

? uname(&systemInfo);?

? NSString *deviceString = [NSStringstringWithCString:systemInfo.machineencoding:NSUTF8StringEncoding];

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

if ([deviceStringisEqualToString:@"iPhone3,2"])return @"iPhone 4";

if ([deviceStringisEqualToString:@"iPhone3,3"])return @"iPhone 4";

if ([deviceStringisEqualToString:@"iPhone4,1"])return @"iPhone 4S";

if ([deviceStringisEqualToString:@"iPhone5,1"])return @"iPhone 5";

if ([deviceStringisEqualToString:@"iPhone5,2"])return @"iPhone 5 (GSM+CDMA)";

if ([deviceStringisEqualToString:@"iPhone5,3"])return @"iPhone 5c (GSM)";

if ([deviceStringisEqualToString:@"iPhone5,4"])return @"iPhone 5c (GSM+CDMA)";

if ([deviceStringisEqualToString:@"iPhone6,1"])return @"iPhone 5s (GSM)";

if ([deviceStringisEqualToString:@"iPhone6,2"])return @"iPhone 5s (GSM+CDMA)";

if ([deviceStringisEqualToString:@"iPhone7,1"])return @"iPhone 6 Plus";

if ([deviceStringisEqualToString:@"iPhone7,2"])return @"iPhone 6";

if ([deviceStringisEqualToString:@"iPhone8,1"])return @"iPhone 6s";

if ([deviceStringisEqualToString:@"iPhone8,2"])return @"iPhone 6s Plus";

if ([deviceStringisEqualToString:@"iPhone8,4"])return @"iPhone SE";

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

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

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

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

if ([deviceStringisEqualToString:@"iPod5,1"])return @"iPod Touch (5 Gen)";

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

if ([deviceStringisEqualToString:@"iPad1,2"])return @"iPad 3G";

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

if ([deviceStringisEqualToString:@"iPad2,2"])return @"iPad 2";

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

if ([deviceStringisEqualToString:@"iPad2,4"])return @"iPad 2";

if ([deviceStringisEqualToString:@"iPad2,5"])return @"iPad Mini (WiFi)";

if ([deviceStringisEqualToString:@"iPad2,6"])return @"iPad Mini";

if ([deviceStringisEqualToString:@"iPad2,7"])return @"iPad Mini (GSM+CDMA)";

if ([deviceStringisEqualToString:@"iPad3,1"])return @"iPad 3 (WiFi)";

if ([deviceStringisEqualToString:@"iPad3,2"])return @"iPad 3 (GSM+CDMA)";

if ([deviceStringisEqualToString:@"iPad3,3"])return @"iPad 3";

if ([deviceStringisEqualToString:@"iPad3,4"])return @"iPad 4 (WiFi)";

if ([deviceStringisEqualToString:@"iPad3,5"])return @"iPad 4";

if ([deviceStringisEqualToString:@"iPad3,6"])return @"iPad 4 (GSM+CDMA)";

if ([deviceStringisEqualToString:@"iPad4,1"])return @"iPad Air (WiFi)";

if ([deviceStringisEqualToString:@"iPad4,2"])return @"iPad Air (Cellular)";

if ([deviceStringisEqualToString:@"iPad4,4"])return @"iPad Mini 2 (WiFi)";

if ([deviceStringisEqualToString:@"iPad4,5"])return @"iPad Mini 2 (Cellular)";

if ([deviceStringisEqualToString:@"iPad4,6"])return @"iPad Mini 2";

if ([deviceStringisEqualToString:@"iPad4,7"])return @"iPad Mini 3";

if ([deviceStringisEqualToString:@"iPad4,8"])return @"iPad Mini 3";

if ([deviceStringisEqualToString:@"iPad4,9"])return @"iPad Mini 3";

if ([deviceStringisEqualToString:@"iPad5,1"])return @"iPad Mini 4 (WiFi)";

if ([deviceStringisEqualToString:@"iPad5,2"])return @"iPad Mini 4 (LTE)";

if ([deviceStringisEqualToString:@"iPad5,3"])return @"iPad Air 2";

if ([deviceStringisEqualToString:@"iPad5,4"])return @"iPad Air 2";

if ([deviceStringisEqualToString:@"iPad6,3"])return @"iPad Pro 9.7";

if ([deviceStringisEqualToString:@"iPad6,4"])return @"iPad Pro 9.7";

if ([deviceStringisEqualToString:@"iPad6,7"])return @"iPad Pro 12.9";

if ([deviceStringisEqualToString:@"iPad6,8"])return @"iPad Pro 12.9";

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

if ([deviceStringisEqualToString:@"x86_64"])return @"Simulator";return deviceString;

}

3. 獲取iPhone名稱

/// 獲取iPhone名稱+ (NSString *)getiPhoneName {

return [UIDevice currentDevice].name;

}

獲取的是你 iPhone 的名字。

4. 獲取app版本號

/// 獲取app版本號+ (NSString *)getAPPVerion {

return [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];

}

5. 獲取電池電量

/// 獲取電池電量+ (CGFloat)getBatteryLevel {

return [UIDevice currentDevice].batteryLevel;

}

這個方法獲取電池電量不是很精確，下邊會介紹一個獲取精確電池電量的。

6. 獲取當(dāng)前系統(tǒng)名稱

/// 當(dāng)前系統(tǒng)名稱+ (NSString *)getSystemName {

return [UIDevice currentDevice].systemName;

}

7. 獲取當(dāng)前系統(tǒng)版本號

/// 當(dāng)前系統(tǒng)版本號+ (NSString *)getSystemVersion {

return [UIDevice currentDevice].systemVersion;

}

8. 獲取通用的唯一識別碼UUID

/// 通用唯一識別碼UUID+ (NSString *)getUUID {

return [[UIDevice currentDevice] identifierForVendor].UUIDString;

}

9. 獲取當(dāng)前設(shè)備IP

// 獲取當(dāng)前設(shè)備IP+ (NSString *)getDeviceIPAdress {? ?

NSString *address = @"an error occurred when obtaining ip address";

structifaddrs *interfaces = NULL;

structifaddrs *temp_addr = NULL;

int success =0;? ?

success = getifaddrs(&interfaces);

if (success ==0) {

// 0 表示獲取成功? ? ? ?

temp_addr = interfaces;while (temp_addr != NULL){

if( temp_addr->ifa_addr->sa_family == AF_INET) {

// Check if interface is en0 which is the wifi connection on the iPhone

if ([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"]) {

// Get NSString from C String? ? ? ? ? ? ? ? ? ?

address = [NSString stringWithUTF8String:inet_ntoa(((structsockaddr_in *)temp_addr->ifa_addr)->sin_addr)];? ?

? ? ? ? ? ? }? ? ?

? ? ? }? ? ? ? ?

? temp_addr = temp_addr->ifa_next;? ? ?

? }? ?

}? ?

freeifaddrs(interfaces);

return address;

}

10. 獲取總內(nèi)存大小

/// 獲取總內(nèi)存大小+ (longlong)getTotalMemorySize {

return [NSProcessInfo processInfo].physicalMemory;

}

11. 獲取當(dāng)前可用內(nèi)存

/// 獲取當(dāng)前可用內(nèi)存+ (longlong)getAvailableMemorySize {

vm_statistics_data_t vmStats;mach_msg_type_number_t infoCount = HOST_VM_INFO_COUNT;

kern_return_t kernReturn = host_statistics(mach_host_self(), HOST_VM_INFO, (host_info_t)&vmStats, &infoCount);

if (kernReturn != KERN_SUCCESS)? ? {

return NSNotFound;? ?

}

return ((vm_page_size * vmStats.free_count + vm_page_size * vmStats.inactive_count));

}

12. 獲取精準(zhǔn)電池電量

/// 獲取精準(zhǔn)電池電量+ (CGFloat)getCurrentBatteryLevel {

UIApplication *app = [UIApplication sharedApplication];

if (app.applicationState ==UIApplicationStateActive||app.applicationState==UIApplicationStateInactive) {?

? ? ? Ivar ivar=? class_getInstanceVariable([appclass],"_statusBar");

id status? = object_getIvar(app, ivar);

for (id aviewin [status subviews]) {

int batteryLevel =0;

for (id bviewin [aview subviews]) {

if ([NSStringFromClass([bviewclass]) caseInsensitiveCompare:@"UIStatusBarBatteryItemView"] ==NSOrderedSame&&[[[UIDevice currentDevice] systemVersion] floatValue] >=6.0) {? ?

? ? ? ? ? ? ? ? Ivar ivar=? class_getInstanceVariable([bviewclass],"_capacity");

if(ivar) {? ? ? ? ? ? ? ? ? ?

? ? batteryLevel = ((int (*)(id, Ivar))object_getIvar)(bview, ivar);

if (batteryLevel >0 && batteryLevel <=100) {

return batteryLevel;? ? ? ? ?

? ? ? ? ? ? ? }else {

return 0; ? ? ? ? ? ? ?

? ? ? ? ? ? } ? ? ? ? ? ??

? ? ? ? ? }? ? ? ? ? ?

? ? ? ?}? ?

? ? ?}? ?

? ?}

?}

return 0;

}

上面這個方法是通過 runtime 獲取電池電量控件類私有變量的值，較為精確。

13. 獲取電池當(dāng)前的狀態(tài)（共有4種狀態(tài)）

/// 獲取電池當(dāng)前的狀態(tài)，共有4種狀態(tài)+ (NSString *) getBatteryState {

UIDevice *device = [UIDevice currentDevice];

if (device.batteryState ==UIDeviceBatteryStateUnknown) {

return @"UnKnow";? ?

}else

if (device.batteryState ==UIDeviceBatteryStateUnplugged){

return @"Unplugged";?

? }else

if (device.batteryState ==UIDeviceBatteryStateCharging){

return @"Charging";?

? }else

if (device.batteryState ==UIDeviceBatteryStateFull){

return @"Full";?

? }

return nil;

}

14. 獲取設(shè)備當(dāng)前的語言

/// 獲取當(dāng)前語言+ (NSString *)getDeviceLanguage {

NSArray *languageArray = [NSLocale preferredLanguages];

return [languageArray objectAtIndex:0];

}

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