从iOS7一个变化就是相对于方形图形，更多的使用圆形图形。微信是使用的方形头像，qq、微博、闲鱼等很多App都用是圆形头像。在做项目的时候遇到一个坑，就是图像是圆形，但是图像不是原图失真了。下面直接上代码：
/**
头像
*/
@property (weak, nonatomic) IBOutlet UIButton *iconBtnImage;
[self.iconBtnImage setImage:** forState:UIControlStateNormal];
self.iconBtnImage.contentMode = UIViewContentModeScaleAspectFill;
self.iconBtnImage.layer.cornerRadius = self.iconBtnImage.size.width/2.0;
self.iconBtnImage.layer.masksToBounds = YES;
#pragma mark 头像选择点击事件
- (IBAction)iconSelectAction:(UIButton *)sender {
UIActionSheet *actionSheet = [[UIActionSheet alloc]initWithTitle:@"选择头像" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"拍照",@"相册",@"图库", nil];
[actionSheet showInView:[UIApplication sharedApplication].keyWindow];
}
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 0) {//相机
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
NSLog(@"支持相机");
[self makePhoto];
}else{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"请在设置-->隐私-->相机，中开启本应用的相机访问权限！！" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"我知道了", nil];
[alert show];
}
}else if (buttonIndex == 1){//相片
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
{
NSLog(@"支持相册");
[self choosePicture];
}else{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"请在设置-->隐私-->照片，中开启本应用的相机访问权限！！" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"我知道了", nil];
[alert show];
}
}else if (buttonIndex == 2){//图册
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum])
{
NSLog(@"支持图库");
[self pictureLibrary];
// [self presentViewController:picker animated:YES completion:nil];
}else{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"请在设置-->隐私-->照片，中开启本应用的相机访问权限！！" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"我知道了", nil];
[alert show];
}
}else if (buttonIndex == 3){
}
}
//跳转到imagePicker里
- (void)makePhoto
{
pickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:pickerController animated:YES completion:nil];
}
//跳转到相册
- (void)choosePicture
{
pickerController.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
[self presentViewController:pickerController animated:YES completion:nil];
}
//跳转图库
- (void)pictureLibrary
{
pickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:pickerController animated:YES completion:nil];
}
//用户取消退出picker时候调用
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
NSLog(@"%@",picker);
[pickerController dismissViewControllerAnimated:YES completion:^{
}];
}
//用户选中图片之后的回调
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
NSLog(@"%s,info == %@",__func__,info);
UIImage *userImage = [self fixOrientation:[info objectForKey:@"UIImagePickerControllerOriginalImage"]];
userImage = [self scaleImage:userImage toScale:0.3];
self.userImage = userImage;
//保存图片
// [self saveImage:userImage name:@"某个特定标示"];
[pickerController dismissViewControllerAnimated:YES completion:^{
}];
[self.iconBtnImage setImage:userImage forState:UIControlStateNormal];
self.imageSave = YES;
self.iconBtnImage.contentMode = UIViewContentModeScaleAspectFill;
self.iconBtnImage.layer.masksToBounds = YES;
}
//缩放图片
- (UIImage *)scaleImage:(UIImage *)image toScale:(float)scaleSize
{
UIGraphicsBeginImageContext(CGSizeMake(image.size.width*scaleSize,image.size.height*scaleSize));
[image drawInRect:CGRectMake(0, 0, image.size.width * scaleSize, image.size.height *scaleSize)];
UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSLog(@"%@",NSStringFromCGSize(scaledImage.size));
return scaledImage;
}
//修正照片方向(手机转90度方向拍照)
- (UIImage *)fixOrientation:(UIImage *)aImage {
// No-op if the orientation is already correct
if (aImage.imageOrientation == UIImageOrientationUp)
return aImage;
// We need to calculate the proper transformation to make the image upright.
// We do it in 2 steps: Rotate if Left/Right/Down, and then flip if Mirrored.
CGAffineTransform transform = CGAffineTransformIdentity;
switch (aImage.imageOrientation) {
case UIImageOrientationDown:
case UIImageOrientationDownMirrored:
transform = CGAffineTransformTranslate(transform, aImage.size.width, aImage.size.height);
transform = CGAffineTransformRotate(transform, M_PI);
break;
case UIImageOrientationLeft:
case UIImageOrientationLeftMirrored:
transform = CGAffineTransformTranslate(transform, aImage.size.width, 0);
transform = CGAffineTransformRotate(transform, M_PI_2);
break;
case UIImageOrientationRight:
case UIImageOrientationRightMirrored:
transform = CGAffineTransformTranslate(transform, 0, aImage.size.height);
transform = CGAffineTransformRotate(transform, -M_PI_2);
break;
default:
break;
}
switch (aImage.imageOrientation) {
case UIImageOrientationUpMirrored:
case UIImageOrientationDownMirrored:
transform = CGAffineTransformTranslate(transform, aImage.size.width, 0);
transform = CGAffineTransformScale(transform, -1, 1);
break;
case UIImageOrientationLeftMirrored:
case UIImageOrientationRightMirrored:
transform = CGAffineTransformTranslate(transform, aImage.size.height, 0);
transform = CGAffineTransformScale(transform, -1, 1);
break;
default:
break;
}
// Now we draw the underlying CGImage into a new context, applying the transform
// calculated above.
CGContextRef ctx = CGBitmapContextCreate(NULL, aImage.size.width, aImage.size.height,
CGImageGetBitsPerComponent(aImage.CGImage), 0,
CGImageGetColorSpace(aImage.CGImage),
CGImageGetBitmapInfo(aImage.CGImage));
CGContextConcatCTM(ctx, transform);
switch (aImage.imageOrientation) {
case UIImageOrientationLeft:
case UIImageOrientationLeftMirrored:
case UIImageOrientationRight:
case UIImageOrientationRightMirrored:
// Grr...
CGContextDrawImage(ctx, CGRectMake(0,0,aImage.size.height,aImage.size.width), aImage.CGImage);
break;
default:
CGContextDrawImage(ctx, CGRectMake(0,0,aImage.size.width,aImage.size.height), aImage.CGImage);
break;
}
// And now we just create a new UIImage from the drawing context
CGImageRef cgimg = CGBitmapContextCreateImage(ctx);
UIImage *img = [UIImage imageWithCGImage:cgimg];
CGContextRelease(ctx);
CGImageRelease(cgimg);
return img;
}
- （void） updataSoureAction{
[LCProgressHUD showLoading:nil];
NSDictionary * parates = @{};
/*
此段代码如果需要修改，可以调整的位置
1. 把upload.php改成网站开发人员告知的地址
2. 把file改成网站开发人员告知的字段名
*/
//AFN3.0+基于封住HTPPSession的句柄
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];//设置相应内容类型
//formData: 专门用于拼接需要上传的数据,在此位置生成一个要上传的数据体
[manager POST:url parameters:parates constructingBodyWithBlock:^(id _Nonnull formData) {
NSData *data = UIImagePNGRepresentation(self.iconBtnImage.imageView.image);
// 在网络开发中，上传文件时，是文件不允许被覆盖，文件重名
// 要解决此问题，
// 可以在上传时使用当前的系统事件作为文件名
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
// 设置时间格式
formatter.dateFormat = @"yyyyMMddHHmmss";
NSString *str = [formatter stringFromDate:[NSDate date]];
NSString *fileName = [NSString stringWithFormat:@"%@.png", str];
//上传
/*
此方法参数
1. 要上传的[二进制数据]
2. 对应网站上[upload.php中]处理文件的[字段"file"]
3. 要保存在服务器上的[文件名]
4. 上传文件的[mimeType]
*/
[formData appendPartWithFileData:data name:@"file" fileName:fileName mimeType:@"image/png"];
} progress:^(NSProgress * _Nonnull uploadProgress) {
//上传进度
// @property int64_t totalUnitCount; 需要下载文件的总大小
// @property int64_t completedUnitCount; 当前已经下载的大小
//
// 给Progress添加监听 KVO
NSLog(@"%f",1.0 * uploadProgress.completedUnitCount / uploadProgress.totalUnitCount);
NSNumberFormatter *hereNumFormatter = [[NSNumberFormatter alloc] init];
[hereNumFormatter setNumberStyle:NSNumberFormatterPercentStyle];
NSString *str = [hereNumFormatter stringFromNumber:[NSNumber numberWithDouble:1.0 * uploadProgress.completedUnitCount / uploadProgress.totalUnitCount]];// 0.3333转33%
// 回到主队列刷新UI,用户自定义的进度条
dispatch_async(dispatch_get_main_queue(), ^{
//上传进度
[LCProgressHUD showLoading:[NSString stringWithFormat:@"上传进度%@",str]];
});
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
NSLog(@"上传失败 %@", error);
[LCProgressHUD hide];
}];
注意的是UIImage *userImage = [self fixOrientation:[info objectForKey:@"UIImagePickerControllerOriginalImage"]];
一定要用UIImagePickerControllerOriginalImage，要不然上传的图形会失真。