uilabel

问题 I need to show a more button on my UILabel when UILineBreakModeTailTruncation starts. ie whenever the " ... " appears, I need to display my more button with some actions. What I am doing is float textWidth = [myString sizeWithFont:myLabel.font].width; if (textWidth > myLabel.frame.size.width) { [moreButton setHidden:FALSE]; } else { [moreButton setHidden:TRUE]; } But my problem is, when the number of lines of the label is set to 2, more button is shown whenever the first line of the label is

问题 I have a prepareForSegue method setup in that sends everything I want to the destinationViewController except the value for a UILabel on the destinationVC . I threw a NSLog statement in to see what value it prints and it prints what I want. It doesn't crash, but it doesn't set. I know I'm missing something very basic here, but it's not jumping out at me. - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(UIButton *)sender { if ([[segue identifier] isEqualToString:@"directionsSegue"])

问题 I renamed a class, which happened to have an outlet connection to a label called mainLabel in a storyboard file. When I run my program, it crashes and gives me the error: "this class is not key value coding-compliant for the key mainLabel". Other SO answers have shown this to be caused by a bad outlet connection, so I removed the connection and removed any lose ends. When trying to reconnect the label to an outlet in my code, I get the error Could not insert new outlet connection: Could not

问题 I am trying to rotate a UILabel at its center, but when it rotates it changes its position. It doesn't stick to its center. I am using following code to rotate it: float fromAngle = atan2(m_locationBegan.y-lblText.center.y, m_locationBegan.x-lblText.center.x); //float toAngle = atan2(_location.y-lblText.center.y, _location.x-lblText.center.x); float toAngle = atan2(_location.y-lblText.center.y+5, _location.x-lblText.center.x+5); float newAngle = wrapd(m_currentAngle + (toAngle - fromAngle), 0

问题 This question already has answers here : How do I make UILabel display outlined text? (14 answers) Closed 4 years ago . I was wondering how can I create text stroke for UILabel ? is there any possible way ? thank you , #import <Foundation/Foundation.h> @interface CustomLabel : UILabel { } @end #import "CustomLabel.h" @implementation CustomLabel - (void)drawTextInRect:(CGRect)rect { CGSize shadowOffset = self.shadowOffset; UIColor *textColor = self.textColor; CGContextRef c =

问题 Im trying to pass an player score from VC1 to a view that displays the current scores of all players(4). the display view is on a separate view controller than where the player(s) score is defined and stored. I have done the prepare(segue) and im able to pass other variables to the display VC(ThirdViewController). but when I try to assign the player score to the uilabel.text It tells me that I have unwrapped a nil value I have even tried to just set the label text to a static string and still

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I know the in objective-c, there is a way to know which device the user is using. But I really a new of iOS development, I do not know those complex and complicated command in objective-c. Could any one tell me how to identify the phone model by coding. Also, if I can know which device the user is using, is that

问题 I am working on a Swift project in Xcode v6.1.1, and I am getting the following error that I don't understand. I believe there is a problem with a couple of the Labels in my Main.storyboard and/or the UILabel variable I have them connected to. I have tried everything I can find to fix it, and nothing has worked. Any help would be appreciated. 2015-03-02 19:43:14.854 Final Project[7380:250494] -[UILabel longValue]: unrecognized selector sent to instance 0x7b8e1810 2015-03-02 19:43:14.876 Final

问题 I'm wanting to create a read only text area in my app which allows the user to click on any word and the app reads it out. I am however a little confused on which method would be the best. I see two options, use a UILabel and create some method to detect the region clicked then match it to the word in that region but it sounds hard to implement. On the other hand I could use an array of words to create a list of UIbutton's. Any advice and/or sample code to help me would be much appreciated,

问题 I am required to change the text color of the UILabel which is contained in the UITableViewCell on a button click. I have created a UIColor object , which is set to specified color on the button click and called the UITableView reloadData method, even then the color is not changing. How should I implement this? 回答1: I assume that you want to change the color of all rows in your table. (If you just want to change a single row, you will need its indexPath ). Create a BOOL variable that keeps