调用系统的相机上传照片

-(void)tapGestureRecognizer:(UITapGestureRecognizer *)sender {

    UIActionSheet *action = [[UIActionSheet alloc] initWithTitle:@"选择照片" delegate: self cancelButtonTitle:@"取消" destructiveButtonTitle:@"相机" otherButtonTitles:@"本地相册", nil];
    [action showInView:self.view];
}

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

    if (buttonIndex == 2) {
        return;
    }

    //创建图片选择器
    UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
    imagePicker.delegate = self;
    //设置图片选择属性
    imagePicker.allowsEditing = NO;
  
    if (buttonIndex == 0) {
       
        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
            //真机打开
            imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        }else {
        
            //模拟器打开
            NSLog(@"模拟器打开");
            return;
        }
        
    }else {
        //相册
        imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    }
    //进去选择器
    [self presentViewController:imagePicker animated:YES completion:nil];
    self.modalPresentationStyle = UIModalPresentationOverCurrentContext;
    
}

#pragma mark - UIImagePickerControllerDelegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)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 *data;
        if (UIImagePNGRepresentation(image) == nil)
        {
            data = UIImageJPEGRepresentation(image, 1.0);
        }
        else
        {
            data = UIImagePNGRepresentation(image);
        }
        
        self.headImg.image = 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:data attributes:nil];
        
        //得到选择后沙盒中图片的完整路径
        self.filePath = [[NSString alloc]initWithFormat:@"%@%@",DocumentsPath,  @"/image.png"];
        
        //关闭相册界面
        [picker dismissViewControllerAnimated:YES completion:nil];
        
    
    //[self saveChangeData];
    }
    
}
//#pragma mark - delegate
//- (void)saveChangeData {

    //NSData *imagData =UIImagePNGRepresentation(self.headImg.image);
    //NSString *imageStr = [[NSString alloc] initWithData:imagData encoding:NSUTF8StringEncoding];
    //NSLog(@"0------%@",imageStr);
    //[DataManager getInstance].user.head_image = imageStr;
//}