Question

执行这些代码块时，我的应用程序崩溃了。没有错误，只是警告。警告说，“'ccTouchesBegan：withEvent'：'void'VS'BOOL'（又名'签名字母'）的执行中的回复类型冲突”请帮忙。

-(BOOL) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
return YES;
}

-(BOOL) ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {

UITouch *myTouch = [touches anyObject];
CGPoint point = [myTouch locationInView:[myTouch view]];
point = [[CCDirector sharedDirector] convertToGL:point];

CCNode *player = [self getChildByTag:kTagPlayer];
[player setPosition:point];

CCNode *computer = [self getChildByTag:kTagComputer];
[computer runAction:[CCMoveTo actionWithDuration:3.0
                                     position:ccp(player.position.x, player.position.y)]
 ];

return YES;
}

Answer 1

正如您的警告所述，这些方法需要不返回任何内容（void），而不是布尔值。尝试更改它，看看它是否修复了警告，否则问题出在代码中，而不是如何调用这些方法。

Answer 2

上的返回类型

-(BOOL) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

应该是（无效）

-(void) ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

}

Answer 3

没有任何回报。

- (void)ccTouchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesMoved:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;

你应该用它来单次触摸;

- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event;

它还支持多点触控：

-(BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event{
    NSArray *allTouches = [[event allTouches] allObjects];
    for (int i=0; i<[allTouches count];i++) {
        if ([some conditions]) {
            CGPoint position = [(UITouch*)[allTouches objectAtIndex:i] locationInView:[[CCDirector sharedDirector]openGLView]];
            position.y = [[CCDirector sharedDirector]winSize].height - position.y;
            //deal with the position;
            return TRUE;
        }
    }
return FALSE;

}

您必须先激活触摸互动：

[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];
//if support multi touch you must set swallowsTouches "NO".

cocos2D触摸屏崩溃

3 个答案: