The @ selector function in iOS transmits multiple parameters.

The @ selector function in iOS transmits multiple parameters.

1. In general, use the self generator mselector: SEL withObject: id method.

 

[self performSelectorOnMainThread:@selector(testAA:) withObject:[NSArray arrayWithObjects:@1,@2, nil] waitUntilDone:NO];-(void) testAA:(NSArray*)data{     if (data==nil||data.count!=2) {        return;    }    NSInteger num=[(NSString*)data[0] intValue];    NSInteger index=[data[1] intValue];}

2. nstinfo: stores the object for passing parameters in the userInfo Dictionary of NSTimer.

 

 

NSMutableDictionary *dict = [[NSMutableDictionary alloc] init];  [dict setObject:oldView forKey:@oldView];[NSTimer scheduledTimerWithTimeInterval:0.0 target:self selector:@selector(onTimer:) userInfo:dict repeats:NO];  [dict release];- (void)onTimer:(NSTimer *)timer {      UIView *oldView = [[timer userInfo] objectForKey:@oldView];}

3. UIButton class: Set tags to use

 

 

UIButton * markButton = [[UIButton alloc] initWithFrame: CGRectMake (280, 0, 30, 30)]; markButton. tag = @ parameter value; // here is the parameter value you want to pass [markButton addTarget: self action: @ selector (addMark :) forControlEvents: UIControlEventTouchUpInside];-(BOOL) addMark :( UIButton *) btn {NSLog (@%@, btn. tag];}