我不断收到未使用的变量警告。我正在尝试显示模态视图,用户在其中选择一张照片,我想在 UIImageView
中使用所选图像。
不确定这些信息是否足够,但非常感谢任何帮助。
- (IBAction) buttonPressed:(UIButton *)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
[self presentModalViewController:picker animated:YES];
[picker release];
}
- (void) imagePickerController:( UIImagePickerController *)picker didFinishPickingMediaWithInfo: (NSDictionary *)info {
UIImage *image = [info objectForKey: UIImagePickerControllerOriginalImage];
}
最佳答案
您收到警告是因为您不再使用图像对象。您必须将此图像保存在某个类对象中才能在代码中的某处使用它,如果您这样做,警告将自动消失。或者只是为了删除您可以执行的警告:
-(void) imagePickerController:( UIImagePickerController *)picker didFinishPickingMediaWithInfo: (NSDictionary *)info {
UIImage *image;
image=[info objectForKey: UIImagePickerControllerOriginalImage];
}
关于ios - "imagePickerController: didFinishPickingMediaWithInfo:"的问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6396614/