iPad图片上传的方法

实现效果：

IMG_4677D226F011-1.jpeg

代码如下：
定义：

@property (nonatomic,strong) UIImagePickerController *imagePicker;
@property (nonatomic,strong) UIPopoverPresentationController* popover;

因为iPad打开照片选择器必须通过UIPopoverPresentationController。

在点击上传的按钮事件做以下操作：

- (IBAction) uploadBtnAct:(id)sender{
    self.imagePicker = [[UIImagePickerController alloc] init];
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
        self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
        self.imagePicker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
        self.imagePicker.navigationBar.translucent = NO;
        self.imagePicker.delegate = self;
        [self.imagePicker setAllowsEditing:NO];
        
        UIViewController *viewController = [[UIViewController alloc] init];
        UIView *pickerView = self.imagePicker.view;
        pickerView.translatesAutoresizingMaskIntoConstraints = NO;
        [viewController addChildViewController:self.imagePicker];
        [viewController.view addSubview:pickerView];
        viewController.modalPresentationStyle = UIModalPresentationPopover;
        
        UIButton *cameraButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [cameraButton setTitle:@"拍摄视频" forState:UIControlStateNormal];
        [cameraButton setTitleColor:UIColorFromRGB(0x007afc) forState:UIControlStateNormal];
        [cameraButton setFrame:CGRectMake(0, 200, CGRectGetWidth(viewController.view.frame), 44)];
        cameraButton.translatesAutoresizingMaskIntoConstraints = NO;
        [cameraButton addTarget:self action:@selector(handleCameraButtonEvent) forControlEvents:UIControlEventTouchUpInside];
        [viewController.view addSubview:cameraButton];
        
        [viewController.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-0-[pickerView]-0-[cameraButton(44)]-0-|" options:NSLayoutFormatDirectionLeadingToTrailing metrics:nil views:NSDictionaryOfVariableBindings(cameraButton,pickerView)]];
        [viewController.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[pickerView]-0-|" options:NSLayoutFormatAlignAllTop | NSLayoutFormatAlignAllBottom metrics:nil views:NSDictionaryOfVariableBindings(pickerView)]];
        [viewController.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[cameraButton]-0-|" options:NSLayoutFormatAlignAllTop | NSLayoutFormatAlignAllBottom metrics:nil views:NSDictionaryOfVariableBindings(cameraButton)]];
        
        _popover = viewController.popoverPresentationController;
        _popover.sourceView = sender;
        _popover.sourceRect = CGRectMake(0, MYUPLOAD_HEADER_OFFSET, sender.bounds.size.width, button.bounds.size.height);
        _popover.permittedArrowDirections = UIPopoverArrowDirectionUp;
        [self.fatherVC presentViewController:viewController animated:YES completion:nil];
    }
}

- (void)handleCameraButtonEvent {
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera] == YES) {
        
        [self.imagePicker dismissViewControllerAnimated:YES completion:^{}];
        _popover = nil;
        self.imagePicker = [[UIImagePickerController alloc] init];
        self.imagePicker.navigationBar.translucent = NO;
        self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        self.imagePicker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
        self.imagePicker.mediaTypes = @[(NSString*)kUTTypeMovie];
        self.imagePicker.videoQuality = UIImagePickerControllerQualityTypeHigh;
        self.imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;
        self.imagePicker.videoMaximumDuration = 30*60;
        self.imagePicker.cameraFlashMode = UIImagePickerControllerCameraFlashModeOff;
        self.imagePicker.showsCameraControls = YES;
        self.imagePicker.delegate = self;
        @weakify(self)
        [self.fatherVC presentViewController:self.imagePicker animated:YES completion:^{
            @strongify(self)
            [self setCameraAuthorizationStatus];
        }];
    }
}