Question

我已经设置了一个代码，其中Viewcontroller *vc在Appdelegate.mm中全局声明，vc初始化为rootviewcontroller。当我从Viewcontroller调用一个更改UILabel的方法时，它会在3-4个更改之后开始覆盖前一个文本。

//AppDelegate.mm

@implementation AppDelegate

ViewController *vc;

- (void)feedSamplesToEngine:(UInt32)audioDataBytesCapacity audioData:(void *)audioData {
    if(check>0 || check==-1)
    {
      [vc writetolabel:check];
    }
}


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    vc = (ViewController *)self.window.rootViewController;
}

...

//ViewcONTROLLER.m

@interface ViewController ()
{ AVAudioSession *session;
}

@end

@implementation ViewController 

@synthesize appDelegate; //global declaration bitches

- (void)viewDidLoad {
    [super viewDidLoad];

     appDelegate = (AudioRecorderAppDelegate *)[[UIApplication sharedApplication] delegate];

    self.TextView.text=@"OTP";
    [appDelegate startRecording];

}

- (void)writetolabel:(int) check{
    self.TextView.text=nil;

    if(check==-1)
        self.TextView.text= [NSString stringWithFormat:@"OTP not verified"];
    else
        self.TextView.text= [NSString stringWithFormat:@"%d", check];

}


- (void)dealloc {
    [UITextView release];
    [super dealloc];
}
@end

我试着寻找相同的，但没有一个答案解决了我的问题。这些值会定期更改，问题不在于传递的值，而是在前3-4个值之后它们会相互重写。

Answer 1

改为而不是

self.TextView.text = nil

到

self.TextView.text=" "

UILabel覆盖之前的值

1 个答案: