小编sus*_*tha的帖子

Assigning to id<UINavigationControllerDelegate,UIImagePickerControllerDelegate> from incompatible type CameraViewController* 警告显示近picker.delegate = self;线

-(IBAction) getPhoto:(id) sender {
UIImagePickerController * picker = [[UIImagePickerController alloc] init];
picker.delegate = self;

if((UIButton *) sender == takePhoto) {
    picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
} else {
    //picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
   picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}

[self presentModalViewController:picker animated:YES];

}

有什么区别:

[[NSMutableArray alloc] init]

和

[NSMutableArray array]

本地声明隐藏"self.treatmentId = treatmentId;"附近的实例变量消息弹出窗口 和"self.treatmentName = treatmentName;";

@implementation Treatment

@synthesize treatmentId;
@synthesize treatmentName;

-(Treatment *)initWithtreatmentName:(NSString *)treatmentName treatmentId:(NSString *)treatmentId{


    if((self = [super init])){
        self.treatmentId = treatmentId;
        self.treatmentName = treatmentName;
    }

    return self;

 }

@end

从不兼容类型''CameraVIewController*''中分配id,显示在下面的代码中

 UIImagePickerController * picker = [[UIImagePickerController alloc] init];
 picker.delegate = self;

setText是不推荐使用的警告消息UITableViewCell

[cell setText:animal.name];

编译时 但程序运行正常.

有时我在objective-c中看到了这种类型的编码.为什么在释放后将_imageView设置为nil.

 - (void)dealloc {
    [_imageView release];
    _imageView = nil;
    [super dealloc];
 }