定义响应的手势类:长按手势,缩放手势

定义响应的手势类:长按手势,缩放手势

// 初始化数据-(id) initWithData:(LQCityData *)citydata{// always call "super" init// Apple recommends to re-assign "self" with the "super's" return valueif( (self=[super init]) ) {          //定义响应的手势类(支持所有UI手势)          //长按手势          UILongPressGestureRecognizer * longPressRecognizer = [[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanFrom:)] autorelease];          longPressRecognizer.minimumPressDuration = 0.5f;          longPressRecognizer.allowableMovement = 1.0f;          longPressRecognizer.cancelsTouchesInView = false;          [[[CCDirector sharedDirector] view] addGestureRecognizer:longPressRecognizer];          //缩放手势          UIPinchGestureRecognizer *gestureRecognizer = [[[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(handlePinchFrom:)] autorelease];           [[[CCDirector sharedDirector] view] addGestureRecognizer:gestureRecognizer];                  // Enable touch  [self setIsTouchEnabled:YES];    }    return self;}

//手势识别函数- (void)handlePanFrom:(UIGestureRecognizer *)recognizer {    //CCLOG(@"handlePanFrom %s %@",__FUNCTION__, recognizer);    if ([recognizer isKindOfClass:[UILongPressGestureRecognizer class]]) {        CCLOG(@"UILongPressGestureRecognizer"); //长按手势        [self selectedOneBuilding:(LQCityBuilding*)clickSprite_];    }        if ([recognizer isKindOfClass:[UIPinchGestureRecognizer class]]){        if([recognizer state] == UIGestureRecognizerStateBegan)              lastScale_ = self.scale; //1        UIPinchGestureRecognizer *recog = (UIPinchGestureRecognizer*)recognizer;        float nowScale = (lastScale_ - 1) + recog.scale;    //2        nowScale = MIN(nowScale,2);//设置缩放上限   //3        nowScale = MAX(nowScale,0.8);//设置缩放下限   //4        //-1.得到移动允许的范围        //-2.添加缩小时的处理        self.scale = nowScale;//5    }}