1.iOS设置屏幕不息屏
2.开启/关闭闪光灯
3.压缩图片分辨率
4.压缩图片尺寸
5.打开设置中心
1.iOS设置屏幕不息屏
[[UIApplication sharedApplication] setIdleTimerDisabled:YES];
2.开启/关闭闪光灯
+ (void)turnOnOrTurnOffTorch {
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
if([devicehasTorch]) {
BOOLisTurnOn = device.torchMode==AVCaptureTorchModeOn;
[devicelockForConfiguration:nil];
device.torchMode = isTurnOn?AVCaptureTorchModeOff:AVCaptureTorchModeOn;
[deviceunlockForConfiguration];
}
}
3.获取设备类型
+ (NSString*)deviceType {
structutsnamesystemInfo;
uname(&systemInfo);
NSString *platform = [NSString stringWithCString:systemInfo.machine encoding:NSASCIIStringEncoding];
// iPhone
if([platformisEqualToString:@"iPhone1,1"]) return@"iPhone 2G";
if([platformisEqualToString:@"iPhone1,2"]) return@"iPhone 3G";
if([platformisEqualToString:@"iPhone2,1"]) return@"iPhone 3GS";
if([platformisEqualToString:@"iPhone3,1"]) return@"iPhone 4";
if([platformisEqualToString:@"iPhone3,2"]) return@"iPhone 4";
if([platformisEqualToString:@"iPhone3,3"]) return@"iPhone 4";
if([platformisEqualToString:@"iPhone4,1"]) return@"iPhone 4S";
if([platformisEqualToString:@"iPhone5,1"]) return@"iPhone 5";
if([platformisEqualToString:@"iPhone5,2"]) return@"iPhone 5";
if([platformisEqualToString:@"iPhone5,3"]) return@"iPhone 5c";
if([platformisEqualToString:@"iPhone5,4"]) return@"iPhone 5c";
if([platformisEqualToString:@"iPhone6,1"]) return@"iPhone 5s";
if([platformisEqualToString:@"iPhone6,2"]) return@"iPhone 5s";
if([platformisEqualToString:@"iPhone7,1"]) return@"iPhone 6 Plus";
if([platformisEqualToString:@"iPhone7,2"]) return@"iPhone 6";
if([platformisEqualToString:@"iPhone8,1"]) return@"iPhone 6s";
if([platform isEqualToString:@"iPhone8,2"]) return@"iPhone 6s Plus";
if([platformisEqualToString:@"iPhone8,4"]) return@"iPhone SE";
if([platformisEqualToString:@"iPhone9,1"]) return@"iPhone 7";
if([platformisEqualToString:@"iPhone9,2"]) return@"iPhone 7 Plus";
if([platformisEqualToString:@"iPhone10,1"]) return@"iPhone 8";
if([platformisEqualToString:@"iPhone10,4"]) return@"iPhone 8";
if([platform isEqualToString:@"iPhone10,2"]) return@"iPhone 8 Plus";
if([platform isEqualToString:@"iPhone10,5"]) return@"iPhone 8 Plus";
if([platformisEqualToString:@"iPhone10,3"]) return@"iPhone X";
if([platformisEqualToString:@"iPhone10,6"]) return@"iPhone X";
if([platformisEqualToString:@"iPhone11,2"]) return@"iPhone XS";
if([platform isEqualToString:@"iPhone11,4"]) return@"iPhone XS Max";
if([platform isEqualToString:@"iPhone11,6"]) return@"iPhone XS Max";
if([platformisEqualToString:@"iPhone11,8"]) return@"iPhone XR";
// iPod Touch
if([platformisEqualToString:@"iPod1,1"]) return@"iPod Touch";
if([platformisEqualToString:@"iPod2,1"]) return@"iPod Touch 2G";
if([platformisEqualToString:@"iPod3,1"]) return@"iPod Touch 3G";
if([platformisEqualToString:@"iPod4,1"]) return@"iPod Touch 4G";
if([platformisEqualToString:@"iPod5,1"]) return@"iPod Touch 5G";
if([platformisEqualToString:@"iPod7,1"]) return@"iPod Touch 6G";
// iPad
if([platformisEqualToString:@"iPad1,1"]) return@"iPad 1G";
if([platformisEqualToString:@"iPad2,1"]) return@"iPad 2";
if([platformisEqualToString:@"iPad2,2"]) return@"iPad 2";
if([platformisEqualToString:@"iPad2,3"]) return@"iPad 2";
if([platformisEqualToString:@"iPad2,4"]) return@"iPad 2";
if([platformisEqualToString:@"iPad2,5"]) return@"iPad Mini 1G";
if([platformisEqualToString:@"iPad2,6"]) return@"iPad Mini 1G";
if([platformisEqualToString:@"iPad2,7"]) return@"iPad Mini 1G";
if([platformisEqualToString:@"iPad3,1"]) return@"iPad 3";
if([platformisEqualToString:@"iPad3,2"]) return@"iPad 3";
if([platformisEqualToString:@"iPad3,3"]) return@"iPad 3";
if([platformisEqualToString:@"iPad3,4"]) return@"iPad 4";
if([platformisEqualToString:@"iPad3,5"]) return@"iPad 4";
if([platformisEqualToString:@"iPad3,6"]) return@"iPad 4";
if([platformisEqualToString:@"iPad4,1"]) return@"iPad Air";
if([platformisEqualToString:@"iPad4,2"]) return@"iPad Air";
if([platformisEqualToString:@"iPad4,3"]) return@"iPad Air";
if([platformisEqualToString:@"iPad4,4"]) return@"iPad Mini 2G";
if([platformisEqualToString:@"iPad4,5"]) return@"iPad Mini 2G";
if([platformisEqualToString:@"iPad4,6"]) return@"iPad Mini 2G";
if([platformisEqualToString:@"iPad4,7"]) return@"iPad Mini 3";
if([platformisEqualToString:@"iPad4,8"]) return@"iPad Mini 3";
if([platformisEqualToString:@"iPad4,9"]) return@"iPad Mini 3";
if([platformisEqualToString:@"iPad5,1"]) return@"iPad Mini 4";
if([platformisEqualToString:@"iPad5,2"]) return@"iPad Mini 4";
if([platformisEqualToString:@"iPad5,3"]) return@"iPad Air 2";
if([platformisEqualToString:@"iPad5,4"]) return@"iPad Air 2";
if([platformisEqualToString:@"iPad6,3"]) return@"iPad Pro 9.7";
if([platformisEqualToString:@"iPad6,4"]) return@"iPad Pro 9.7";
if([platformisEqualToString:@"iPad6,7"]) return@"iPad Pro 12.9";
if([platformisEqualToString:@"iPad6,8"]) return@"iPad Pro 12.9";
if([platform isEqualToString:@"i386"]) return@"iPhone Simulator i386";
if([platform isEqualToString:@"x86_64"]) return@"iPhone Simulator x86_64";
returnplatform;
}
3.压缩图片分辨率
+ (NSData*)compressQuality:(UIImage*)image maxLength:(NSUInteger)maxLength {
CGFloatcompression =1;
NSData*data =UIImageJPEGRepresentation(image, compression);
if(data.length< maxLength) {
returndata;
}
CGFloatmax =1;
CGFloatmin =0;
for(inti =0; i <6; ++i) {
compression = (max + min) /2;
data =UIImageJPEGRepresentation(image, compression);
if(data.length< maxLength *0.9) {
min = compression;
}elseif(data.length> maxLength) {
max = compression;
}else{
break;
}
}
if(data.length> maxLength) {
data = [selfcompressBySize:[UIImageimageWithData:data]maxLength:maxLength];
}
returndata;
}
4.压缩图片尺寸
+ (NSData*)compressBySize:(UIImage*)image maxLength:(NSUInteger)maxLength {
UIImage*resultImage = image;
NSData *data = UIImageJPEGRepresentation(resultImage, 1);
NSUIntegerlastDataLength =0;
while(data.length> maxLength && data.length!= lastDataLength) {
lastDataLength = data.length;
CGFloatratio = (CGFloat)maxLength / data.length;
CGSizesize =CGSizeMake((NSUInteger)(resultImage.size.width*sqrtf(ratio)),
(NSUInteger)(resultImage.size.height*sqrtf(ratio)));
UIGraphicsBeginImageContext(size);
[resultImagedrawInRect:CGRectMake(0,0, size.width, size.height)];
resultImage =UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
data =UIImageJPEGRepresentation(resultImage,1);
}
returndata;
}
5.打开设置中心
+ (void)openSetting {
NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
[[UIApplication sharedApplication] openURL:url options:@{} completionHandler:nil];
}
大家什么需要的，可以留言哦，我会尽快添加上的。
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