uitextfield

How do I properly encode Unicode characters in my NSString?

由 |▌冷眼眸甩不掉的悲伤 提交于 2019-12-01 10:57:16
Problem Statement I create a number of strings, concatenate them together into CSV format, and then email the string as an attachment. When these strings contain only ASCII characters, the CSV file is built and emailed properly. When I include non-ASCII characters, the result string becomes malformed and the CSV file is not created properly. (The email view shows an attachment, but it is not sent.) For instance, this works: uncle bill's house of pancakes But this doesn't (note the curly apostrophe): uncle bill’s house of pancakes Question How do I create and encode the final string properly so

Why does UITextField lock up when setting itself to delegate

由 夙愿已清 提交于 2019-12-01 10:06:03
问题 I have a class that extends UITextfield. I also have the same class set to be it's own delegate so when the text field is selected I can change the background color. Once I selecte the text field and type a couple of letters the app locks up and crashes. here is what my .m file looks like @implementation MyTextField - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { self.delegate = self; } return self; } - (void)textFieldDidBeginEditing:(UITextField *

Format a UITextField for currency

由 前提是你 提交于 2019-12-01 10:03:53
问题 I have a UITextField on my aplication that receives only numeric input from the user. This numeric input represents currency and have the default value of 0.00. I would like to create something like a mask to format the UITextField as the user enter the numbers. For example: 9 becomes $0,09 99 becomes $0,99 999 becomes $999,99 The code below works great, but as I'm using integer and float values the app will eventually display wrong values afeter a certain point. For example: 999999999

Action when the small cross button of UITextField is pressed

由 依然范特西╮ 提交于 2019-12-01 08:52:25
I can add a small cross button that is used to clear all the text in a single click in a UITextField with the following code. textField.clearButtonMode = UITextFieldViewModeWhileEditing; I also implemented UITextFieldDelegate . I want to activate/deactivate the right bar button of the UINavigationBar according to the changes in my UITextField . The rule is simple: if the text field has at least one character, just enable the button, else disable it. I implemented the UITextField 's delegate method textField:shouldChangeCharactersInRange: to constantly check the requirement and update the

tableView convertPoint: fromView: odd behaviour and workaround

由 三世轮回 提交于 2019-12-01 08:17:24
问题 I have a tableView with custom cells. One of the objects in the cell is a textField. The tableViewController is the textFieldDelegate. The datasource for the table is an array of objects. When the user tap on the textField, the tableViewController implements textField delegates methods controlling this way the data entry. To use the data entered by user, the tableViewController implements the following: - (BOOL)textFieldShouldEndEditing:(UITextField *)textField { CGPoint point = [textField

ios making a button change view when text field equals string

由 两盒软妹~` 提交于 2019-12-01 08:14:19
问题 I am making this kind of password to skip levels in a game. But I dont know what code I need to make a button change View Controller... - (IBAction)button:(id)sender { if ([txt.text isEqualToString:@"passwordToSkipLevel1"]) { // Code to change View Controller??? } } I am not sure if I have done it correct to far, and I am not sure how I can make it change View Controller either... Any ideas? Extra: Is there any method to make the password not case sensetive? 回答1: What you have seems fine as

How properly subclass UITextField in iOS?

由 六眼飞鱼酱① 提交于 2019-12-01 07:55:07
问题 I know that there is a lot of info on the Internet about that question but I am stuck. I have app in which I need to customise my UITextFields . For example I need change border colour when edit starts or I need limitation of how many characters I can set in different text fields. I also need an image in several text fields which has to be indented on the left. To do all this I decided to make custom UITextField class (to subclass UITextField). I created new class from UITextField (which

Another take on the “keyboard obscures UITextField” problem

由 戏子无情 提交于 2019-12-01 07:17:54
I know that this is a common problem and the UITableViewController fixed this is iPhone SDK 3.0, but the UITableViewController is not working as I expect, probably due to how I am using it. Here's my problem: I'm working on a form, which is in a grouped table, which contains some text fields. Those on the lower part of the form get obscured by the keyboard. I know this is an age-old problem, and there are some examples of code to auto scroll, but I've a little bit more to add, and was wondering if anyone has found this, and fixed it. Firstly: Since 3.0, if your table is controlled by a

Action when the small cross button of UITextField is pressed

由 ♀尐吖头ヾ 提交于 2019-12-01 07:06:28
问题 I can add a small cross button that is used to clear all the text in a single click in a UITextField with the following code. textField.clearButtonMode = UITextFieldViewModeWhileEditing; I also implemented UITextFieldDelegate . I want to activate/deactivate the right bar button of the UINavigationBar according to the changes in my UITextField . The rule is simple: if the text field has at least one character, just enable the button, else disable it. I implemented the UITextField 's delegate

How to use NSNumberFormatter for currency to print in UITextField

由 大兔子大兔子 提交于 2019-12-01 07:03:40
问题 I am a N00b here . I print my currency like this : -(IBAction)buttonPressed1:(id)sender { double currency = [Amount1.text doubleValue] + [Amount2.text doubleValue]; SumCurrency.text = [NSString stringWithFormat:@"%0.0f", answer]; } I just simply want to use NSSNumberFormatter to print the SumCurrency.text in US Currency format .. Having a lot of trouble with it ..Please hekp same issue ??? http://groups.jonzu.com/z_apple_using-a-nsnumberformatter-with-a-uitextfield.html Thanks in Advance .
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