注：用的AFNetworking版本低于3.0
1、遵守协议UIImagePickerControllerDelegate,UINavigationControllerDelegate
2、首先创建按钮，添加点击事件
//点击事件
- (void)onTapSecondCell
{
UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"提示" message:nil preferredStyle:UIAlertControllerStyleActionSheet];
__weak typeof(self) weakSelf = self;
UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"打开相机" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[weakSelf takePhoto];
}];
UIAlertAction *action2 = [UIAlertAction actionWithTitle:@"打开相册" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[weakSelf localPhoto];
}];
UIAlertAction *action3 = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[alert dismissViewControllerAnimated:YES completion:^{
NSLog(@"取消准备照片");
}];
}];
[alert addAction:action1];
[alert addAction:action2];
[alert addAction:action3];
[self presentViewController:alert animated:YES completion:nil];
}
//打开相机
- (void)takePhoto
{
UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])//相机
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = sourceType;
[self presentViewController:picker animated:YES completion:^{
NSLog(@"调取相机成功");
}];
}
else{
NSLog(@"模拟器情况下无法打开");
}
}
//打开相册
- (void)localPhoto
{
UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])//相册
{
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = sourceType;
[self presentViewController:picker animated:YES completion:^{
NSLog(@"调取相册成功");
}];
}
else{
NSLog(@"相册打不开应该是出问题了");
}
}
实现协议方法
//当选择一张图片后进入到这个协议方法里
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info
{
NSString *type = [info objectForKey:UIImagePickerControllerMediaType];
//当选择的类型是图片
if ([type isEqualToString:@"public.image"])
{
//先把图片转成NSData
UIImage* image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
NSData *data1;
if (UIImagePNGRepresentation(image) == nil)
{
data1 = UIImageJPEGRepresentation(image, 1);
}
else
{
data1 = UIImagePNGRepresentation(image);
}
//图片保存的路径
//这里将图片放在沙盒的documents文件夹中
NSString * DocumentsPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
//文件管理器
NSFileManager *fileManager = [NSFileManager defaultManager];
//把刚刚图片转换的data对象拷贝至沙盒中 并保存为image.png
[fileManager createDirectoryAtPath:DocumentsPath withIntermediateDirectories:YES attributes:nil error:nil];
[fileManager createFileAtPath:[DocumentsPath stringByAppendingString:@"/image.png"] contents:data1 attributes:nil];
//得到选择后沙盒中图片的完整路径
NSString *filePath = [[NSString alloc]initWithFormat:@"%@%@",DocumentsPath, @"/image.png"];
long long abc = [self fileSizeAtPath:filePath];
if (abc < 1024000) {
_headerImage = image;
}
else {
//如果图片尺寸过大则压缩
UIImage *small = [Help imageWithImageSimple:image scaledToSize:CGSizeMake(image.size.width/4, image.size.height/4)];
NSData *data;
if (UIImagePNGRepresentation(small) == nil)
{
data = UIImageJPEGRepresentation(small, 0.25);
}
else
{
data = UIImagePNGRepresentation(small);
}
[fileManager createFileAtPath:[DocumentsPath stringByAppendingString:@"/image.png"] contents:data attributes:nil];
_headerImage = small;
}
//关闭相册界面
[picker dismissViewControllerAnimated:YES completion:^{
NSLog(@"关闭相册界面");
}];
[self.tableView reloadData];
}
}
//判断文件的大小
- (long long) fileSizeAtPath:(NSString*) filePath{
NSFileManager* manager = [NSFileManager defaultManager];
if ([manager fileExistsAtPath:filePath]){
return [[manager attributesOfItemAtPath:filePath error:nil] fileSize];
}
return 0;
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[picker dismissViewControllerAnimated:YES completion:^{
NSLog(@"您取消了选择图片222");
}];
}
选中图片上传
- (void)postData
{
AFHTTPRequestOperationManager *manage = [AFHTTPRequestOperationManager manager];
manage.responseSerializer = [AFHTTPResponseSerializer serializer];
__weak typeof(self) weakSelf = self;
[MBProgressHUD showHUDAddedTo:self.tableView animated:YES];
[manage POST:Health_GetReportPic parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
//上传图片
NSData *data = UIImageJPEGRepresentation(_headerImage, 1.0);
[formData appendPartWithFileData:data name:@"report_pic_path" fileName:@"image.png" mimeType:@"png"];
//name-->对应数据库存储的字段
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingAllowFragments error:nil];
if ([dict[@"message"] isEqualToString:@"数据插入成功"])
{
[MBProgressHUD hideHUDForView:self.tableView animated:YES];
[weakSelf addAlertControllerWithMessage:@"上传成功"];
//沙盒中图片的完整路径
NSString *string1 = [NSHomeDirectory() stringByAppendingString:@"/Documents/image.jpg"];
NSFileManager *fileManage = [NSFileManager defaultManager];
[fileManage removeItemAtPath:string1 error:nil];
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"%@",error.localizedDescription);
[MBProgressHUD hideHUDForView:self.tableView animated:YES];
[weakSelf addAlertControllerWithMessage:@"上传失败"];
}];
}
