UIImagePickerController add text to image - ios

Question

I'm trying to capture an image or video using the camera in iOS and add some text to a black bar overlayed at the bottom of the image.
I'm trying to get the text from a user input and save the image with the text and rectangle at the bottom of the image:
How would I go about this?
I currently have this:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
// A photo was taken/selected!
self.image = [info objectForKey:UIImagePickerControllerOriginalImage];
if (self.imagePicker.sourceType == UIImagePickerControllerSourceTypeCamera) {
// Save the image!
UIImageWriteToSavedPhotosAlbum(self.image, nil, nil, nil);
}
}
else {
// A video was taken/selected!
self.videoFilePath = (__bridge NSString *)([[info objectForKey:UIImagePickerControllerMediaURL] path]);
if (self.imagePicker.sourceType == UIImagePickerControllerSourceTypeCamera) {
// Save the video!
if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(self.videoFilePath)) {
UISaveVideoAtPathToSavedPhotosAlbum(self.videoFilePath, nil, nil, nil);
}
}
}
[self dismissViewControllerAnimated:YES completion:nil]; }
What would be the best way of going about this?

Answer 1

You can add a UIView over the UIImageView with black (with alpha to be 0.5) background and on this UIView you can add a UILabel with your text.

Answer 2

I'd say have the user do an input using a UIAlertView
here's a sample
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:#"Title Here"
message:#"message"
delegate:self
cancelButtonTitle:#"Cancel" // or nil
otherButtonTitles:#"Ok",
nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[alert show];
that shows that an alert will appear with a text box in it. Since we set self to delegate, you have to call that delegate as such
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSString *title = [alertView buttonTitleAtIndex:buttonIndex];
if ([title isEqualToString:#"Ok"]) {
NSString *alertText = [alertView textFieldAtIndex:0].text;
// create UILabel here and set the text as advised in answer above
// example with global UILabel *overlayLabel;
self.overlayLabel.text = alertText;
// self.overlayLabel.font = [UIFont ...];
}
}
This is essentially what apple does. Go to the music app, and hit the "new playlist" and you'll see it in action
hope this helps!