我尝试这样,但这是行不通的.我该怎么办?
I try like this, but it isn't work. How can i do this ?
MKAnnotationView *pointTest = [[MKAnnotationView alloc] init]; pointTest.annotation = point; pointTest.draggable= YES; UITextField *pointText = [[UITextField alloc] initWithFrame:CGRectMake(location.latitude, location.longitude, 100, 20)]; pointText.backgroundColor = [UIColor blackColor]; pointTest.rightCalloutAccessoryView = pointText; pointTest.canShowCallout = YES; [self.userMap addAnnotation:pointTest];推荐答案
首先,您为 pointText UITextField,纬度和经度不是屏幕坐标,应按以下方式实现:
First of all, you are setting a wrong frame for the pointText UITextField, latitude and longitude are not screen coordinates, it should be implemented like this:
CGFloat originX = 0; //Or other value CGFLoat originY = 0; //Or other value UITextField *pointText = [[UITextField alloc] initWithFrame:CGRectMake(originX, originY, 100, 20)];您可能也需要将canShowCallout设置为是":
You may also need to set canShowCallout to YES:
pointTest.canShowCallout = YES;然后,您正在将rightCalloutAccessoryView设置为UITextField,这不是最好的选择.为此属性指定的常见视图是UIButton对象,其类型设置为UIButtonTypeDetailDisclosure.对于标题和字幕,我更喜欢使用 annotation 属性:
Then, you are setting the rightCalloutAccessoryView as an UITextField, which is not the best thing to do. A common view to specify for this property is UIButton object whose type is set to UIButtonTypeDetailDisclosure. For titles and subtitles, I prefer using the annotation attribute:
point.title = "Your title"; pointTest.annotation = point;您应检查苹果文档.
You should check the apple documentation.
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