首先要创建图片选取对象(sourceType)
//创建图片选取器对象
UIImagePickerController * pickerViwController = [[UIImagePickerController alloc] init];
/*
图片来源
UIImagePickerControllerSourceTypePhotoLibrary：表示显示所有的照片
UIImagePickerControllerSourceTypeCamera：表示从摄像头选取照片
UIImagePickerControllerSourceTypeSavedPhotosAlbum：表示仅仅从相册中选取照片。
*/
pickerViwController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
//允许用户编辑图片 (YES可以编辑，NO只能选择照片)
pickerViwController.allowsEditing = YES;
//设置代理
pickerViwController.delegate = self;
[self presentViewController:pickerViwController animated:YES completion:nil];
遵循协议之后就可以在从相册选取图片之后回调方法
#pragma mark <2>相册协议中方法，选中某张图片后调用方法
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image= [info objectForKey:@"UIImagePickerControllerOriginalImage"];
// 如果是相机拍照的，保存在本地
if (picker.sourceType == UIImagePickerControllerSourceTypeCamera)
{
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);
}
//让界面的imageview中图片换成得到选中的图片
tapImageView.image = image;
//保存图片到Document目录下
[self saveImage:image WithName:@"userHeader.png"];
[self dismissViewControllerAnimated:YES completion:nil];
}
#pragma mark -- 压缩图片
- (UIImage*)imageWithImageSimple:(UIImage*)image scaledToSize:(CGSize)newSize
{
// Create a graphics image context
UIGraphicsBeginImageContext(newSize);
// Tell the old image to draw in this new context, with the desired
// new size
[image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
// Get the new image from the context
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
// End the context
UIGraphicsEndImageContext();
// Return the new image.
return newImage;
}
- (void)saveImage:(UIImage *)tempImage WithName:(NSString *)imageName
{
NSData *imageData = UIImagePNGRepresentation(tempImage);
//判断图像是png格式的还是jpg格式的（iOS相册里面可以保存gif格式的，可是gif格式的图片在相册中是以静态图显示的）
if (UIImagePNGRepresentation(tempImage) == nil)
{
imageData = UIImageJPEGRepresentation(tempImage, 1.0);
}
else
{
imageData = UIImagePNGRepresentation(tempImage);
}
NSString* documentPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *tempDocumentPath = [documentPath stringByAppendingPathComponent:imageName];
//保存到 document
[imageData writeToFile: tempDocumentPath atomically:NO];
//上传服务器
// [self uploadToWedServer: tempDocumentPath];
}
#pragma mark //上传服务器
- (void)uploadAvatar:(NSString*)tempPath {
//URL(长度不能超过255)模拟器上过长老是bingo
NSURL *filePath=[NSURL URLWithString: tempPath];
// 此为上传路径，当你需要以文件流的方式进行上传的时候，此处只需要把照片转化成NSData类型的data，参数按照之前的上传路径参数制定即可，然后上传
//NSData *data=[NSData dataWithContentsOfFile:filePath];
NSString *uploadString=@"http://localhost/webServer/upload.php";
NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer]multipartFormRequestWithMethod:@"POST" URLString:uploadString parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData)
{
[formData appendPartWithFileURL:filePath name:@"file" fileName:@"d3.png" mimeType:@"image/jpeg" error:nil];
/**
* 文件流方式上传
*/
//[formData appendPartWithFileData:data name:@"upFile" fileName:@"headImage.png" mimeType:@"image/png"];
} error:nil];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
manager.responseSerializer=[AFHTTPResponseSerializer serializer];
NSProgress *progress = nil;
NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithStreamedRequest:request progress:&progress completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
if (error) {
NSLog(@"Error: %@", error);
} else {
NSLog(@"OK!,%@ %@", response,[[NSString alloc]initWithData:responseObject encoding:NSUTF8StringEncoding] );
}
}];
[uploadTask resume];
}
