ios - 选择视频时是否可以更改 `UIImagePickerController` 的标题？
<p><p>我有开放的照片库来选择视频。这是我的代码:</p>
<p></p>
<pre><code>- (void)selectMediaFrom:(UIImagePickerControllerSourceType)sourceType {
UIImagePickerController *imagePicker = [ init];
imagePicker.sourceType = sourceType;
imagePicker.delegate = self;
//imagePicker.allowsEditing = YES;
if (selectedMediaType == MediaVideos) {
imagePicker.mediaTypes = @[(NSString *)kUTTypeMovie, (NSString *)kUTTypeVideo];
if (sourceType == UIImagePickerControllerSourceTypeCamera) {
imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;
}
}
else if (selectedMediaType == MediaPhotos) {
imagePicker.mediaTypes = @[(NSString *)kUTTypeImage];
if (sourceType == UIImagePickerControllerSourceTypeCamera) {
imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
}
}
if (IS_IPHONE) {
;
}
else {
dispatch_async(dispatch_get_main_queue(), ^{
;
;
});
}
}
</code></pre>
<p>它总是将 <code>UIImagePickerController</code> 的标题显示为 <strong>Photos</strong>，请参见我附上的截图。</p>
<p> <a href="/image/rqcgu.png" rel="noreferrer noopener nofollow"><img src="/image/rqcgu.png" alt="imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary and imagePicker.mediaTypes = @[(NSString *)kUTTypeMovie, (NSString *)kUTTypeVideo]"/></a> </p>
<p>但是，我打开 <strong>iPhone</strong> 默认 <strong>照片应用程序</strong> 并检查，显示视频文件夹:见下文</p>
<p> <a href="/image/5D5cp.png" rel="noreferrer noopener nofollow"><img src="/image/5D5cp.png" alt="Default Photos App"/></a> </p>
<p>那为什么它不显示 <strong>Videos</strong> 标题？我们可以改变它吗？</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>是的，您可以更改所需的导航标题。</p>
<p>添加<code>UINavigationControllerDelegate</code></p>的委托(delegate)
<p><strong>Swift 3.0</strong></p>
<pre><code>func navigationController(_ navigationController: UINavigationController, willShow viewController: UIViewController, animated: Bool){
viewController.navigationItem.title = "Kirit Modi"
}
</code></pre>
<p><strong> Objective-C </strong> </p>
<pre><code>- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{
;
}
</code></pre>
<p><strong>查看输出:</strong> </p>
<p> <a href="/image/QA8Qc.png" rel="noreferrer noopener nofollow"><img src="/image/QA8Qc.png" alt="enter image description here"/></a> </p></p>
<p style="font-size: 20px;">关于ios - 选择视频时是否可以更改`UIImagePickerController` 的标题？，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/46599848/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/46599848/
</a>
</p>
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