<p>
我们在写代码的时候经常会将头像进行上传服务器，上传头像图片我试过两种方式
一种方式就是使用base64字符串上传图片，这种形式我个人认为比较适合上传图片数量比较少的，比如上传头像，上传图片数量多的话，速度会慢些
另一种方式是使用二进制流进行上传图片，这种方式上传图片少或者数量多都没关系，速度也很快
</p>
demo地址http://download.csdn.net/detail/tuwanli125/9340205](http://download.csdn.net/detail/tuwanli125/9340205)
demo地址:https://github.com/tuwanli/PictureHead
ViewController.h
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@property (weak, nonatomic) IBOutletUIImageView *headIcon;
- (IBAction)changeIconAction:(UITapGestureRecognizer *)sender;
@end
ViewController.m
#import "ViewController.h"
#import "AFHTTPRequestOperationManager.h"
@interface ViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate,UIActionSheetDelegate>
{
UIImagePickerController *pickerController;
AFHTTPRequestOperationManager *manager;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[superviewDidLoad];
//初始化头像控件
[selfinitHeadIcon];
//初始化pickController
[selfcreateData];
}
- (void)initHeadIcon
{
self.view.backgroundColor = [UIColorlightGrayColor];
self.headIcon.layer.cornerRadius = self.headIcon.frame.size.height/2;
self.headIcon.clipsToBounds =YES;
self.headIcon.layer.borderColor = [UIColor whiteColor].CGColor;
self.headIcon.layer.borderWidth = 3;
}
- (void)createData
{
//初始化pickerController
pickerController = [[UIImagePickerControlleralloc]init];
pickerController.view.backgroundColor = [UIColororangeColor];
pickerController.delegate =self;
pickerController.allowsEditing =YES;
}
- (IBAction)changeIconAction:(UITapGestureRecognizer *)sender {
UIActionSheet *actionSheet = [[UIActionSheetalloc]initWithTitle:@"选择头像"delegate:selfcancelButtonTitle:@"取消"destructiveButtonTitle:nilotherButtonTitles:@"拍照",@"相册",@"图库",nil];
[actionSheet showInView:[UIApplicationsharedApplication].keyWindow];
}
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex ==0) {//相机
if([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
NSLog(@"支持相机");
[selfmakePhoto];
}else{
UIAlertView *alert = [[UIAlertViewalloc]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:selfcancelButtonTitle:@"取消"otherButtonTitles:@"我知道了",nil];
[alertshow];
}
}elseif (buttonIndex ==1){//相片
if([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
{
NSLog(@"支持相册");
[selfchoosePicture];
}else{
UIAlertView *alert = [[UIAlertViewalloc]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:selfcancelButtonTitle:@"取消"otherButtonTitles:@"我知道了",nil];
[alertshow];
}
}elseif (buttonIndex ==2){//图册
if([UIImagePickerControllerisSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum])
{
NSLog(@"支持图库");
[selfpictureLibrary];
// [self presentViewController:picker animated:YES completion:nil];
}else{
UIAlertView *alert = [[UIAlertViewalloc]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:selfcancelButtonTitle:@"取消"otherButtonTitles:@"我知道了",nil];
[alertshow];
}
}elseif (buttonIndex ==3){
}
}
//跳转到imagePicker里
- (void)makePhoto
{
pickerController.sourceType =UIImagePickerControllerSourceTypeCamera;
[selfpresentViewController:pickerControlleranimated:YEScompletion:nil];
}
//跳转到相册
- (void)choosePicture
{
pickerController.sourceType =UIImagePickerControllerSourceTypeSavedPhotosAlbum;
[selfpresentViewController:pickerControlleranimated:YEScompletion:nil];
}
//跳转图库
- (void)pictureLibrary
{
pickerController.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;
[selfpresentViewController:pickerControlleranimated:YEScompletion:nil];
}
//用户取消退出picker时候调用
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
NSLog(@"%@",picker);
[pickerControllerdismissViewControllerAnimated:YEScompletion:^{
}];
}
//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 = [selffixOrientation:[infoobjectForKey:@"UIImagePickerControllerOriginalImage"]];
userImage = [selfscaleImage:userImagetoScale:0.3];
//保存图片
// [self saveImage:userImage name:@"某个特定标示"];
[pickerControllerdismissViewControllerAnimated:YEScompletion:^{
}];
[self.headIconsetImage:userImage];
self.headIcon.contentMode = UIViewContentModeScaleAspectFill;
self.headIcon.clipsToBounds =YES;
//照片上传
[selfupDateHeadIcon:userImage];
}
- (void)upDateHeadIcon:(UIImage *)photo
{
//两种方式上传头像
/*方式一：使用NSData数据流传图片*/
NSString *imageURl =@"";
manager.responseSerializer = [AFHTTPResponseSerializerserializer];
manager.responseSerializer.acceptableContentTypes =[NSSetsetWithObject:@"text/html"];
[managerPOST:imageURlparameters:nilconstructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formDataappendPartWithFileData:UIImageJPEGRepresentation(photo,1.0)name:@"text"fileName:@"test.jpg"mimeType:@"image/jpg"];
}success:^(AFHTTPRequestOperation *operation,id responseObject) {
}failure:^(AFHTTPRequestOperation *operation,NSError *error) {
}];
/*方式二：使用Base64字符串传图片*/
NSData *data =UIImageJPEGRepresentation(photo,1.0);
NSString *pictureDataString=[database64Encoding];
NSDictionary * dic =@{@"verbId":@"modifyUserInfo",@"deviceType":@"ios",@"userId":@"",@"photo":pictureDataString,@"mobileTel":@""};
[managerPOST:@""parameters:dic success:^(AFHTTPRequestOperation *operation,idresponseObject) {
if ([[responseObjectobjectForKey:@"flag"]intValue] == 0) {
}else{
}
}
failure:^(AFHTTPRequestOperation *operation,NSError *error) {
}];
}
//保存照片到沙盒路径(保存)
- (void)saveImage:(UIImage *)image name:(NSString *)iconName
{
NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
//写入文件
NSString *icomImage = iconName;
NSString *filePath = [[pathsobjectAtIndex:0]stringByAppendingPathComponent:[NSStringstringWithFormat:@"%@.png", icomImage]];
// 保存文件的名称
// [[self getDataByImage:image] writeToFile:filePath atomically:YES];
[UIImagePNGRepresentation(image)writeToFile: filePath atomically:YES];
}
//缩放图片
- (UIImage *)scaleImage:(UIImage *)image toScale:(float)scaleSize
{
UIGraphicsBeginImageContext(CGSizeMake(image.size.width*scaleSize,image.size.height*scaleSize));
[imagedrawInRect: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;
CGAffineTransform transform =CGAffineTransformIdentity;
switch (aImage.imageOrientation) {
caseUIImageOrientationDown:
caseUIImageOrientationDownMirrored:
transform =CGAffineTransformTranslate(transform, aImage.size.width, aImage.size.height);
transform =CGAffineTransformRotate(transform,M_PI);
break;
caseUIImageOrientationLeft:
caseUIImageOrientationLeftMirrored:
transform =CGAffineTransformTranslate(transform, aImage.size.width,0);
transform =CGAffineTransformRotate(transform,M_PI_2);
break;
caseUIImageOrientationRight:
caseUIImageOrientationRightMirrored:
transform =CGAffineTransformTranslate(transform,0, aImage.size.height);
transform =CGAffineTransformRotate(transform, -M_PI_2);
break;
default:
break;
}
switch (aImage.imageOrientation) {
caseUIImageOrientationUpMirrored:
caseUIImageOrientationDownMirrored:
transform =CGAffineTransformTranslate(transform, aImage.size.width,0);
transform =CGAffineTransformScale(transform, -1,1);
break;
caseUIImageOrientationLeftMirrored:
caseUIImageOrientationRightMirrored:
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) {
caseUIImageOrientationLeft:
caseUIImageOrientationLeftMirrored:
caseUIImageOrientationRight:
caseUIImageOrientationRightMirrored:
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;
}
CGImageRef cgimg =CGBitmapContextCreateImage(ctx);
UIImage *img = [UIImageimageWithCGImage:cgimg];
CGContextRelease(ctx);
CGImageRelease(cgimg);
return img;
}
此demo从相册选区图片使用的单选图片，如果想看多选图片显示在ScrollView中demo 地址：https://github.com/tuwanli/PictureMutipleSelect
