我是一个新手,正在努力制作我的第一个应用程序。我想通过从 UISlider 接收值来更改 PaintCode 制作的(贝塞尔路径)对象(?)的大小。谁能帮助我下面的代码有什么问题以及如何使其工作?
int heightOfBubble = 120;
- (IBAction)widthOfBubble:(id)sender {
NSLog(@"slider value = %f", self.slider.value);
[slider addTarget:self action:@selector(drawRect:) forControlEvents:UIControlEventValueChanged];
}
- (void)drawRect:(CGRect)rect {
label.text = [NSString stringWithFormat:@"%f", self.slider.value];
NSLog(@"slider value = %f", self.slider.value);
[BubbleText10 drawBubbleButtonWithText2:@"안개비 조명은 하예 흔들리는 내 몸을 감싸고~~ 술에 취에 비틀거리는 하~예 나의 모습 이제는 싫어~ 삐리비립" number:12 numberOfWidth:widthOfBubble numberOfHeight:heightOfBubble condition: NO];
我收到以下错误;
Mar 19 00:55:45 BubbleText03[44457] <Error>: CGContextRestoreGState: invalid context 0x0. Backtrace:
<+[BubbleText10 drawBubbleButtonWithText2:number:numberOfWidth:numberOfHeight:condition:]+4941>
<-[BubbleView drawRect:]+421>
<-[UIApplication sendAction:to:from:forEvent:]+83>
<-[UIControl sendAction:to:forEvent:]+67>
<-[UIControl _sendActionsForEvents:withEvent:]+444>
<-[UISlider endTrackingWithTouch:withEvent:]+255>
<-[UIControl touchesEnded:withEvent:]+620>
<-[UIWindow _sendTouchesForEvent:]+2747>
<-[UIWindow sendEvent:]+4011>
<-[UIApplication sendEvent:]+371>
<__dispatchPreprocessedEventFromEventQueue+3248>
<__handleEventQueue+4879>
<__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__+17>
<__CFRunLoopDoSources0+556>
<__CFRunLoopRun+918>
<CFRunLoopRunSpecific+420>
<GSEventRunModal+161>
<UIApplicationMain+159>
<main+111>
<start+1>
提前谢谢了。