关于iOS如何实现视频和图片的上传, 我们先理清下思路,然后小编根据思路一步一步给大家详解实现过程。
思路:
#1. 如何获取图片?
#2. 如何获取视频?
#3. 如何把图片存到缓存路径中?
#4. 如何把视频存到缓存路径中?
#5. 如何上传?
接下来, 我们按照上面的思路一步一步实现
首先我们新建一个类, 用来储存每一个要上传的文件uploadModel.h
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# import <Foundation/Foundation.h>
@interface uploadModel : NSObject
@property (nonatomic, strong) NSString *path;
@property (nonatomic, strong) NSString *type;
@property (nonatomic, strong) NSString *name;
@property (nonatomic, assign) BOOL isUploaded;
@end
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#1. 如何获取图片?
从相册选择 或者 拍照,
这部分可以用UIImagePickerController来实现
代码如下:
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- ( void )actionPhoto {
UIAlertController *alertController = \
[UIAlertController alertControllerWithTitle:@ ""
message:@ "上传照片"
preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertAction *photoAction = \
[UIAlertAction actionWithTitle:@ "从相册选择"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * _Nonnull action) {
NSLog(@ "从相册选择" );
self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
self.imagePicker.mediaTypes = @[(NSString *)kUTTypeImage];
self.imagePicker.allowsEditing = YES;
[self presentViewController:self.imagePicker
animated:YES
completion:nil];
}];
UIAlertAction *cameraAction = \
[UIAlertAction actionWithTitle:@ "拍照"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * _Nonnull action) {
NSLog(@ "拍照" );
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
self.imagePicker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
self.imagePicker.allowsEditing = YES;
[self presentViewController:self.imagePicker
animated:YES
completion:nil];
}
}];
UIAlertAction *cancelAction = \
[UIAlertAction actionWithTitle:@ "取消"
style:UIAlertActionStyleCancel
handler:^(UIAlertAction * _Nonnull action) {
NSLog(@ "取消" );
}];
[alertController addAction:photoAction];
[alertController addAction:cameraAction];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
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#2. 如果获取视频?
从相册选择 或者 拍摄
这部分也可以用UIImagePickerController来实现
代码:
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- ( void )actionVideo {
UIAlertController *alertController = \
[UIAlertController alertControllerWithTitle:@ ""
message:@ "上传视频"
preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertAction *photoAction = \
[UIAlertAction actionWithTitle:@ "从视频库选择"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * _Nonnull action) {
NSLog(@ "从视频库选择" );
self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
self.imagePicker.mediaTypes = @[(NSString *)kUTTypeMovie];
self.imagePicker.allowsEditing = NO;
[self presentViewController:self.imagePicker animated:YES completion:nil];
}];
UIAlertAction *cameraAction = \
[UIAlertAction actionWithTitle:@ "录像"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * _Nonnull action) {
NSLog(@ "录像" );
self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.imagePicker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
self.imagePicker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];
self.imagePicker.videoQuality = UIImagePickerControllerQualityType640x480;
self.imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;
self.imagePicker.allowsEditing = YES;
[self presentViewController:self.imagePicker animated:YES completion:nil];
}];
UIAlertAction *cancelAction = \
[UIAlertAction actionWithTitle:@ "取消"
style:UIAlertActionStyleCancel
handler:^(UIAlertAction * _Nonnull action) {
NSLog(@ "取消" );
}];
[alertController addAction:photoAction];
[alertController addAction:cameraAction];
[alertController addAction:cancelAction];
[self presentViewController:alertController animated:YES completion:nil];
}
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#3, 关于缓存, 如何把照片存入缓存目录?
这部分我们先考虑缓存目录, 一般存在Document 或者 Temp里面
我们给图片和视频各创建一个缓存目录:
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#define PHOTOCACHEPATH [NSTemporaryDirectory() stringByAppendingPathComponent:@ "photoCache" ]
#define VIDEOCACHEPATH [NSTemporaryDirectory() stringByAppendingPathComponent:@ "videoCache" ]
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把UIImage存入缓存的方法:
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//将Image保存到缓存路径中
- ( void )saveImage:(UIImage *)image toCachePath:(NSString *)path {
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath:PHOTOCACHEPATH]) {
NSLog(@ "路径不存在, 创建路径" );
[fileManager createDirectoryAtPath:PHOTOCACHEPATH
withIntermediateDirectories:YES
attributes:nil
error:nil];
} else {
NSLog(@ "路径存在" );
}
//[UIImagePNGRepresentation(image) writeToFile:path atomically:YES];
[UIImageJPEGRepresentation(image, 1 ) writeToFile:path atomically:YES];
}
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4. 如何把视频存入缓存?
把视频存入缓存的方法:
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//将视频保存到缓存路径中
- ( void )saveVideoFromPath:(NSString *)videoPath toCachePath:(NSString *)path {
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath:VIDEOCACHEPATH]) {
NSLog(@ "路径不存在, 创建路径" );
[fileManager createDirectoryAtPath:VIDEOCACHEPATH
withIntermediateDirectories:YES
attributes:nil
error:nil];
} else {
NSLog(@ "路径存在" );
}
NSError *error;
[fileManager copyItemAtPath:videoPath toPath:path error:&error];
if (error) {
NSLog(@ "文件保存到缓存失败" );
}
}
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从缓存获取图片的方法:
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//从缓存路径获取照片
- (UIImage *)getImageFromPath:(NSString *)path {
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:path]) {
return [UIImage imageWithContentsOfFile:path];
}
return nil;
}
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上传图片和视频的时候我们一般会利用当前时间给文件命名, 方法如下
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//以当前时间合成图片名称
- (NSString *)getImageNameBaseCurrentTime {
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@ "yyyy-MM-dd HH-mm-ss" ];
return [[dateFormatter stringFromDate:[NSDate date]] stringByAppendingString:@ ".JPG" ];
}
//以当前时间合成视频名称
- (NSString *)getVideoNameBaseCurrentTime {
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@ "yyyy-MM-dd HH-mm-ss" ];
return [[dateFormatter stringFromDate:[NSDate date]] stringByAppendingString:@ ".MOV" ];
}
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有时候需要获取视频的第一帧作为显示, 方法如下:
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//获取视频的第一帧截图, 返回UIImage
//需要导入AVFoundation.h
- (UIImage*) getVideoPreViewImageWithPath:(NSURL *)videoPath
{
AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoPath options:nil];
AVAssetImageGenerator *gen = [[AVAssetImageGenerator alloc] initWithAsset:asset];
gen.appliesPreferredTrackTransform = YES;
CMTime time = CMTimeMakeWithSeconds( 0.0 , 600 );
NSError *error = nil;
CMTime actualTime;
CGImageRef image = [gen copyCGImageAtTime:time actualTime:&actualTime error:&error];
UIImage *img = [[UIImage alloc] initWithCGImage:image];
return img;
}
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5. 如何上传?
下面就是上传方法:
我把服务器地址xx掉了, 大家可以改为自己的
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//上传图片和视频
- ( void )uploadImageAndMovieBaseModel:(uploadModel *)model {
//获取文件的后缀名
NSString *extension = [model.name componentsSeparatedByString:@ "." ].lastObject;
//设置mimeType
NSString *mimeType;
if ([model.type isEqualToString:@ "image" ]) {
mimeType = [NSString stringWithFormat:@ "image/%@" , extension];
} else {
mimeType = [NSString stringWithFormat:@ "video/%@" , extension];
}
//创建AFHTTPSessionManager
AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
//设置响应文件类型为JSON类型
manager.responseSerializer = [AFJSONResponseSerializer serializer];
//初始化requestSerializer
manager.requestSerializer = [AFHTTPRequestSerializer serializer];
manager.responseSerializer.acceptableContentTypes = nil;
//设置timeout
[manager.requestSerializer setTimeoutInterval: 20.0 ];
//设置请求头类型
[manager.requestSerializer setValue:@ "form/data" forHTTPHeaderField:@ "Content-Type" ];
//设置请求头, 授权码
[manager.requestSerializer setValue:@ "YgAhCMxEehT4N/DmhKkA/M0npN3KO0X8PMrNl17+hogw944GDGpzvypteMemdWb9nlzz7mk1jBa/0fpOtxeZUA==" forHTTPHeaderField:@ "Authentication" ];
//上传服务器接口
NSString *url = [NSString stringWithFormat:@ "http://xxxxx.xxxx.xxx.xx.x" ];
//开始上传
[manager POST:url parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> _Nonnull formData) {
NSError *error;
BOOL success = [formData appendPartWithFileURL:[NSURL fileURLWithPath:model.path] name:model.name fileName:model.name mimeType:mimeType error:&error];
if (!success) {
NSLog(@ "appendPartWithFileURL error: %@" , error);
}
} progress:^(NSProgress * _Nonnull uploadProgress) {
NSLog(@ "上传进度: %f" , uploadProgress.fractionCompleted);
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
NSLog(@ "成功返回: %@" , responseObject);
model.isUploaded = YES;
[self.uploadedArray addObject:model];
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
NSLog(@ "上传失败: %@" , error);
model.isUploaded = NO;
}];
}
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这里有事先创建两个可变数组uploadArray, uploadedArray, 一个存放准要上传的内容, 一个存放上传完的内容
在准备上传后做什么操作, 可以检查两个数组的数量是否相等
最后是UIImagePickerController的协议方法
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#pragma mark - UIImagePickerDelegate methods
- ( void )imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info {
[picker dismissViewControllerAnimated:YES completion:nil];
//获取用户选择或拍摄的是照片还是视频
NSString *mediaType = info[UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
//获取编辑后的照片
NSLog(@ "获取编辑后的好片" );
UIImage *tempImage = info[UIImagePickerControllerEditedImage];
//将照片存入相册
if (tempImage) {
if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {
//将照片存入相册
NSLog(@ "将照片存入相册" );
UIImageWriteToSavedPhotosAlbum(tempImage, self, nil, nil);
}
//获取图片名称
NSLog(@ "获取图片名称" );
NSString *imageName = [self getImageNameBaseCurrentTime];
NSLog(@ "图片名称: %@" , imageName);
//将图片存入缓存
NSLog(@ "将图片写入缓存" );
[self saveImage:tempImage
toCachePath:[PHOTOCACHEPATH stringByAppendingPathComponent:imageName]];
//创建uploadModel
NSLog(@ "创建model" );
uploadModel *model = [[uploadModel alloc] init];
model.path = [PHOTOCACHEPATH stringByAppendingPathComponent:imageName];
model.name = imageName;
model.type = @ "image" ;
model.isUploaded = NO;
//将模型存入待上传数组
NSLog(@ "将Model存入待上传数组" );
[self.uploadArray addObject:model];
}
}
else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie]) {
if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {
//如果是拍摄的视频, 则把视频保存在系统多媒体库中
NSLog(@ "video path: %@" , info[UIImagePickerControllerMediaURL]);
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library writeVideoAtPathToSavedPhotosAlbum:info[UIImagePickerControllerMediaURL] completionBlock:^(NSURL *assetURL, NSError *error) {
if (!error) {
NSLog(@ "视频保存成功" );
} else {
NSLog(@ "视频保存失败" );
}
}];
}
//生成视频名称
NSString *mediaName = [self getVideoNameBaseCurrentTime];
NSLog(@ "mediaName: %@" , mediaName);
//将视频存入缓存
NSLog(@ "将视频存入缓存" );
[self saveVideoFromPath:info[UIImagePickerControllerMediaURL] toCachePath:[VIDEOCACHEPATH stringByAppendingPathComponent:mediaName]];
//创建uploadmodel
uploadModel *model = [[uploadModel alloc] init];
model.path = [VIDEOCACHEPATH stringByAppendingPathComponent:mediaName];
model.name = mediaName;
model.type = @ "moive" ;
model.isUploaded = NO;
//将model存入待上传数组
[self.uploadArray addObject:model];
}
//[picker dismissViewControllerAnimated:YES completion:nil];
}
- ( void )imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[picker dismissViewControllerAnimated:YES completion:nil];
}
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以上所述是小编给大家介绍的iOS实现视频和图片的上传思路,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持!
原文链接:http://www.cnblogs.com/zhouxihi/p/6526304.html