如何使用 UIButton addTarget 将 NSString 对象作为参数传递给另一个方法:
这是我的代码:
- (void)visionPBJVision *)vision capturedVideoNSDictionary *)videoDict errorNSError *)error
{
_recording = NO;
if (error) {
NSLog(@"encounted an error in video capture (%@)", error);
return;
}
_currentVideo = videoDict;
NSString *videoPath = [_currentVideo objectForKeyBJVisionVideoPathKey];
NSLog(@"string = %@",videoPath);
UIButton *ok = [UIButton buttonWithType:UIButtonTypeRoundedRect];
ok.frame = CGRectMake(95, 3, 50, 30);
[ok setTitle"OK" forState:UIControlStateNormal];
[ok addTarget:self actionselector(okwindow forControlEvents:UIControlEventTouchUpInside];
[customview addSubviewk];
}
如何将字符串值作为参数传递给 addTarget:
请给出任何建议以及解决方案...
Best Answer-推荐答案 strong>
想必你想在 okwindow: 方法中访问 videoPath 字符串?这不是通过按钮传递状态来完成的。按钮用于收集触摸事件。
相反,通过添加属性来更改 View Controller 的状态...
@property (nonatomic, strong) NSString *videoPath;
当你得到字符串时设置它...
NSString *videoPath = [_currentVideo objectForKeyBJVisionVideoPathKey];
NSLog(@"string = %@",videoPath);
self.videoPath = videoPath;
并在用户按下按钮时访问它...
- (void)okwindowid)sender {
NSLog(@"I still have the string = %@",self.videoPath);
}
关于iphone - 如何将 NSString 值从一种方法传递到按钮 addTarget 方法的另一种方法?,我们在Stack Overflow上找到一个类似的问题:
https://stackoverflow.com/questions/18706998/
|