iOS：挑选照片后如何在视图之间切换？

Question

我正在编写一个应用程序，用户可以在库中选择一张照片，发送到服务器。 这是我的代码

-(IBAction)btnTakePictureClicked {
    UIImagePickerController* picker = [[UIImagePickerController alloc] init];
    picker.delegate=self;
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    [self presentModalViewController:picker animated:YES];
    [picker release];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo{
    [picker.parentViewController dismissModalViewControllerAnimated:YES];
    self.imgTemp = image;

// Where should these lines be?
    Send* send = [[Send alloc] initWithNibName:@"Send Email" bundle:nil];
    [self presentModalViewController:send animated:YES];
    [send release];
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    [picker.parentViewController dismissModalViewControllerAnimated:YES];
}

我预计在挑选照片后，它将变为发送页面。 但是，它仍然回到主页。

这些线应该在哪里？

Send* send = [[Send alloc] initWithNibName:@"Send Email" bundle:nil];
    [self presentModalViewController:send animated:YES];
    [send release];

Answer 1

如果您呈现模态视图 controller 和 animation，在完成的块中释放它，您可以尝试：

    Send* send = [[Send alloc] initWithNibName:@"Send Email" bundle:nil];
    [self presentViewController:send animated:YES completion:^{
        [send release];
    }];

Answer 2

选择图像后，它将移动以发送查看 controller

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:UIImage *)image editingInfo:(NSDictionary *)editingInfo{
self.imgTemp = image;
Send* send = [[Send alloc] initWithNibName:@"Send Email" bundle:nil];
[self presentModalViewController:send animated:YES];
[send release];

}

Answer 3

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo{
    [picker.parentViewController dismissModalViewControllerAnimated:YES];
    self.imgTemp = image;
.....

在这里，你说“是”对“否”。 即，关闭没有 animation 的模态视图。