取本地相册里面的照片并上传

最新推荐文章于 2024-07-20 17:02:58 发布

原创最新推荐文章于 2024-07-20 17:02:58 发布 · 364 阅读

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本文介绍如何在 iOS 应用中实现从相册选择图片或使用相机拍摄照片，并完成图片的预览、保存及上传功能。具体步骤包括设置 UIImagePickerController 的源类型、处理选择后的图片数据、将图片保存到本地沙盒目录以及批量上传图片到服务器。

首先的导入要UIImagePickerControllerDelegate，UINavigationControllerDelegate者两个协议

UIActionSheet *_actionSheet = [[UIActionSheet alloc]initWithTitle:@"选择方式" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"从相册选择",@"现在拍摄", nil];

#pragma mark 选择图片方式

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{

UIImagePickerController * imagePickerController = [[UIImagePickerController alloc]init];

imagePickerController.delegate = self;

if (buttonIndex == 0) {

//从相册选

imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

[self presentViewController:imagePickerController animated:YES completion:^{

}];

}else if (buttonIndex == 1){

//现在拍摄

imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;

[self presentViewController:imagePickerController animated:YES completion:^{

}];

}else if(buttonIndex == 2){

//取消

[_actionSheet removeFromSuperview];

}

-(void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{

if (indexPath.row == _imageArr.count-1 && !_imageFull) {//选择图片

[_actionSheet showInView:self.view];

}

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{

[self dismissViewControllerAnimated:YES completion:^{

}];

UIImage * image = [BaseView imageWithImage:[info objectForKey:@"UIImagePickerControllerOriginalImage"] scaledToSize:CGSizeMake(200, 200)];

UIImage * upImage = [info objectForKeyedSubscript:@"UIImagePickerControllerOriginalImage"];

[_imageArr insertObject:image atIndex:0];

// [_imageDataArr insertObject:UIImageJPEGRepresentation(upImage, 0.3) atIndex:0];

NSData *data = UIImageJPEGRepresentation(upImage, 0.3);

// 图片的保存路径

NSString *documentsPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];

NSFileManager *manager = [NSFileManager defaultManager];

// 将刚刚转化的图片放到沙盒中并保存为png

[manager createDirectoryAtPath:documentsPath withIntermediateDirectories:YES attributes:nil error:nil];

NSString *imageName = [NSString stringWithFormat:@"/%@.png",[NSDate date]];

[manager createFileAtPath:[documentsPath stringByAppendingString:[NSString stringWithFormat:@"%@",imageName]] contents:data attributes:nil];

//得到选择后沙盒的路径

filePath = [[NSString alloc]initWithFormat:@"%@%@",documentsPath,imageName];

NSLog(@"filePath:%@",filePath);

[picker dismissViewControllerAnimated:YES completion:nil];

[_imageDataArr addObject:filePath];

if (_imageDataArr.count == 3) {

[_imageArr removeObjectAtIndex:3];

_imageFull = YES;

}

- (void)issue

{

[BaseView showHUD:@"正在发表..." andView:self.view andHUD:_hud];

article = [BmobObject objectWithClassName:@"Article"];

if (_imageArr.count > 1) {

// 上传图片

[BmobFile filesUploadBatchWithPaths:_imageDataArr progressBlock:^(int index, float progress) {

} resultBlock:^(NSArray *array, BOOL isSuccessful, NSError *error) {

NSMutableArray *images = [NSMutableArray array];

for (BmobFile *file in array) {

[images addObject:file.url];

}

BmobObject *object = [BmobObject objectWithClassName:@"Article"];

[object addObjectsFromArray:images forKey:@"images"];

UIAlertView * alert = [[UIAlertView alloc]initWithTitle:@"提示" message:nil delegate:self cancelButtonTitle:nil otherButtonTitles:@"确定", nil];

[object saveInBackgroundWithResultBlock:^(BOOL isSuccessful, NSError *error) {

if (isSuccessful) {

alert.tag = 10;

[alert setMessage:@"发表成功"];

[alert show];

[_hud hide:YES];

}

}];

}