一、目錄結構: 獲取屏幕寬度與高度 獲取設備版本號 獲取iPhone名稱 獲取app版本號 獲取電池電量 獲取當前系統名稱 獲取當前系統版本號 獲取通用的唯一識別碼UUID 獲取當前設備IP 獲取總記憶體大小 獲取當前可用記憶體 獲取精準電池電量 獲取電池當前的狀態（共有4種狀態） 獲取設備當前的語言 ...
一、目錄結構:
-
獲取屏幕寬度與高度
-
獲取設備版本號
-
獲取iPhone名稱
-
獲取app版本號
-
獲取電池電量
-
獲取當前系統名稱
-
獲取當前系統版本號
-
獲取通用的唯一識別碼UUID
-
獲取當前設備IP
-
獲取總記憶體大小
-
獲取當前可用記憶體
-
獲取精準電池電量
-
獲取電池當前的狀態（共有4種狀態）
-
獲取設備當前的語言
二、具體內容
1. 獲取屏幕寬度與高度
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/// 屏幕寬度
+ (CGFloat)getDeviceScreenWidth {
return [UIScreen mainScreen].bounds.size.width;
}
/// 屏幕高度
+ (CGFloat)getDeviceScreenHeight {
return [UIScreen mainScreen].bounds.size.height;
}
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[UIScreen mainScreen].bounds.size.width用的很普遍，一般來說定義成巨集更好，然後根據屏幕寬高進行尺寸的適配。
2. 獲取設備版本號
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+ (NSString *)getDeviceName {
// 需要#import "sys/utsname.h"
struct utsname systemInfo;
uname(&systemInfo);
NSString *deviceString = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
if ([deviceString isEqualToString:@"iPhone3,1"]) return @"iPhone 4";
if ([deviceString isEqualToString:@"iPhone3,2"]) return @"iPhone 4";
if ([deviceString isEqualToString:@"iPhone3,3"]) return @"iPhone 4";
if ([deviceString isEqualToString:@"iPhone4,1"]) return @"iPhone 4S";
if ([deviceString isEqualToString:@"iPhone5,1"]) return @"iPhone 5";
if ([deviceString isEqualToString:@"iPhone5,2"]) return @"iPhone 5 (GSM+CDMA)";
if ([deviceString isEqualToString:@"iPhone5,3"]) return @"iPhone 5c (GSM)";
if ([deviceString isEqualToString:@"iPhone5,4"]) return @"iPhone 5c (GSM+CDMA)";
if ([deviceString isEqualToString:@"iPhone6,1"]) return @"iPhone 5s (GSM)";
if ([deviceString isEqualToString:@"iPhone6,2"]) return @"iPhone 5s (GSM+CDMA)";
if ([deviceString isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus";
if ([deviceString isEqualToString:@"iPhone7,2"]) return @"iPhone 6";
if ([deviceString isEqualToString:@"iPhone8,1"]) return @"iPhone 6s";
if ([deviceString isEqualToString:@"iPhone8,2"]) return @"iPhone 6s Plus";
if ([deviceString isEqualToString:@"iPhone8,4"]) return @"iPhone SE";
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:@"iPod5,1"]) return @"iPod Touch (5 Gen)";
if ([deviceString isEqualToString:@"iPad1,1"]) return @"iPad";
if ([deviceString isEqualToString:@"iPad1,2"]) return @"iPad 3G";
if ([deviceString isEqualToString:@"iPad2,1"]) return @"iPad 2 (WiFi)";
if ([deviceString isEqualToString:@"iPad2,2"]) return @"iPad 2";
if ([deviceString isEqualToString:@"iPad2,3"]) return @"iPad 2 (CDMA)";
if ([deviceString isEqualToString:@"iPad2,4"]) return @"iPad 2";
if ([deviceString isEqualToString:@"iPad2,5"]) return @"iPad Mini (WiFi)";
if ([deviceString isEqualToString:@"iPad2,6"]) return @"iPad Mini";
if ([deviceString isEqualToString:@"iPad2,7"]) return @"iPad Mini (GSM+CDMA)";
if ([deviceString isEqualToString:@"iPad3,1"]) return @"iPad 3 (WiFi)";
if ([deviceString isEqualToString:@"iPad3,2"]) return @"iPad 3 (GSM+CDMA)";
if ([deviceString isEqualToString:@"iPad3,3"]) return @"iPad 3";
if ([deviceString isEqualToString:@"iPad3,4"]) return @"iPad 4 (WiFi)";
if ([deviceString isEqualToString:@"iPad3,5"]) return @"iPad 4";
if ([deviceString isEqualToString:@"iPad3,6"]) return @"iPad 4 (GSM+CDMA)";
if ([deviceString isEqualToString:@"iPad4,1"]) return @"iPad Air (WiFi)";
if ([deviceString isEqualToString:@"iPad4,2"]) return @"iPad Air (Cellular)";
if ([deviceString isEqualToString:@"iPad4,4"]) return @"iPad Mini 2 (WiFi)";
if ([deviceString isEqualToString:@"iPad4,5"]) return @"iPad Mini 2 (Cellular)";
if ([deviceString isEqualToString:@"iPad4,6"]) return @"iPad Mini 2";
if ([deviceString isEqualToString:@"iPad4,7"]) return @"iPad Mini 3";
if ([deviceString isEqualToString:@"iPad4,8"]) return @"iPad Mini 3";
if ([deviceString isEqualToString:@"iPad4,9"]) return @"iPad Mini 3";
if ([deviceString isEqualToString:@"iPad5,1"]) return @"iPad Mini 4 (WiFi)";
if ([deviceString isEqualToString:@"iPad5,2"]) return @"iPad Mini 4 (LTE)";
if ([deviceString isEqualToString:@"iPad5,3"]) return @"iPad Air 2";
if ([deviceString isEqualToString:@"iPad5,4"]) return @"iPad Air 2";
if ([deviceString isEqualToString:@"iPad6,3"]) return @"iPad Pro 9.7";
if ([deviceString isEqualToString:@"iPad6,4"]) return @"iPad Pro 9.7";
if ([deviceString isEqualToString:@"iPad6,7"]) return @"iPad Pro 12.9";
if ([deviceString isEqualToString:@"iPad6,8"]) return @"iPad Pro 12.9";
if ([deviceString isEqualToString:@"i386"]) return @"Simulator";
if ([deviceString isEqualToString:@"x86_64"]) return @"Simulator";
return deviceString;
}
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3. 獲取iPhone名稱
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/// 獲取iPhone名稱
+ (NSString *)getiPhoneName {
return [UIDevice currentDevice].name;
}
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獲取的是你 iPhone 的名字。
4. 獲取app版本號
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/// 獲取app版本號
+ (NSString *)getAPPVerion {
return [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"];
}
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5. 獲取電池電量
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/// 獲取電池電量
+ (CGFloat)getBatteryLevel {
return [UIDevice currentDevice].batteryLevel;
}
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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. 獲取當前系統名稱
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/// 當前系統名稱
+ (NSString *)getSystemName {
return [UIDevice currentDevice].systemName;
}
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7. 獲取當前系統版本號
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/// 當前系統版本號
+ (NSString *)getSystemVersion {
return [UIDevice currentDevice].systemVersion;
}
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8. 獲取通用的唯一識別碼UUID
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/// 通用唯一識別碼UUID
+ (NSString *)getUUID {
return [[UIDevice currentDevice] identifierForVendor].UUIDString;
}
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9. 獲取當前設備IP
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// 獲取當前設備IP
+ (NSString *)getDeviceIPAdress {
NSString *address = @"an error occurred when obtaining ip address";
struct ifaddrs *interfaces = NULL;
struct ifaddrs *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(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
}
}
temp_addr = temp_addr->ifa_next;
}
}
freeifaddrs(interfaces);
return address;
}
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10. 獲取總記憶體大小
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/// 獲取總記憶體大小
+ (long long)getTotalMemorySize {
return [NSProcessInfo processInfo].physicalMemory;
}
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11. 獲取當前可用記憶體
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/// 獲取當前可用記憶體
+ (long long)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));
}
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12. 獲取精準電池電量
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/// 獲取精準電池電量
+ (CGFloat)getCurrentBatteryLevel {
UIApplication *app = [UIApplication sharedApplication];
if (app.applicationState == UIApplicationStateActive||app.applicationState==UIApplicationStateInactive) {
Ivar ivar= class_getInstanceVariable([app class],"_statusBar");
id status = object_getIvar(app, ivar);
for (id aview in [status subviews]) {
int batteryLevel = 0;
for (id bview in [aview subviews]) {
if ([NSStringFromClass([bview class]) caseInsensitiveCompare:@"UIStatusBarBatteryItemView"] == NSOrderedSame&&[[[UIDevice currentDevice] systemVersion] floatValue] >=6.0) {
Ivar ivar= class_getInstanceVariable([bview class],"_capacity");
if(ivar) {
batteryLevel = ((int (*)(id, Ivar))object_getIvar)(bview, ivar);
if (batteryLevel > 0 && batteryLevel <= 100) {
return batteryLevel;
} else {
return 0;
}
}
}
}
}
}
return 0;
}
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上面這個方法是通過 runtime 獲取電池電量控制項類私有變數的值，較為精確。
13. 獲取電池當前的狀態（共有4種狀態）
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/// 獲取電池當前的狀態，共有4種狀態
+ (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;
}
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14. 獲取設備當前的語言
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/// 獲取當前語言
+ (NSString *)getDeviceLanguage {
NSArray *languageArray = [NSLocale preferredLanguages];
return [languageArray objectAtIndex:0];
}
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