iOS之@selector的函數傳遞多個參數

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iOS之@selector的函數傳遞多個參數

1、一般情況,使用 self performSelector:SEL withObject:id方法

 

[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、NSTimer:將傳參的對象儲存在了NSTimer的userInfo的字典中。

 

 

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類:通過設定tag來使用

 

 

UIButton * markButton=[[UIButton alloc] initWithFrame:CGRectMake(280, 0, 30, 30)];markButton.tag=@參數值; //這裡是你要傳遞的參數值[markButton addTarget:self action:@selector(addMark:)  forControlEvents:UIControlEventTouchUpInside];-(BOOL) addMark:(UIButton *)btn {    NSLog(@%@,btn.tag];}


 

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