I want to limit the length of a textfield, so that a user can know how many characters he can input. But I find no such attributes of textfield on iPhone. Any ideas how to do this?
And how to switch from one textfield to another when it reaches its max length? (to let users type easily)
You might check out the UITextFieldDelegate protocol, specifically textField:shouldChangeCharactersInRange:replacementString:. You could check if your text field has reached it's maximum size, and if so move to the next appropriate text field by sending it becomeFirstResponder:
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I think this is more of a general issue. I would like to use a textfield that gets dynamic data and doesn't stretch more than a given max height. For instance, I have a textfield that, if it gets text that fits in one line, the textfield will be one line height, and i have other elements under it, that will move up with float positioning. Or, if I want a 3 line max height and if the text exceeds that space, then the rest will be trimmed.
I don't want to use java expressions to trim that text, as it is not always accurate. I am new to jasper and I am trying to know if there is any way to do this. I did a lot of searches, but maybe there is something that i missed, and i hope someone can help me. Thank you
I managed to solve this by extending net.sf.jasperreports.engine.fill.TextMeasurer and overriding initialize() method; also I had to extend net.sf.jasperreports.engine.util.AbstractTextMeasurerFactory and override the createMeasurer() method.
Now, whenever I want to have max # of lines, with no overflow, I add a property to that text field (e.g. maxLines) which is being passed to my custom TextMeasurerFactory. I hope this helped you.
We had a similar problem at work with JASPER Reports 4.5, where we had an invoice with a header and a table. We wanted the header to have dynamic height based on the lengths of certain fields (like address, partner name, etc,), but not more than a critical limit, otherwise the header will push the table and thus making a mess by splitting it across multiple pages. Also, the invoice shouldn't exceed 1 page.
We eventually had to move the header in the background section, where we also put a background for the table consisting of vertical lines (so it will extend to the end of an A4 page) and a white opaque square.
This way, if the header exceeds the max height it will go underneath the table's background, cropping the text. This was the desired effect we were looking for.
Sounds crazy, but it worked ...
I am new to gwt and I am trying to check if the dynamic string document id that i am retrieving will will fit on the gwt label or not. Now I am checking for the number of characters and if the number exceeds 15 I am appending ... after 12 characters and displaying the actual id in the tooltip. I need to know how do i achieve this without calculating the number of characters. Please help
The width of a label does not only depend on the string size, but on the font used.
You could write you string in a temporary label attached to the dom and query the size using the method 'getClientWidth' of the element or gwtquery, and remove recursively the last character until you get the appropriate size.
In my opinion the easier way would be to use css and define a fixed width of your label and set the property overflow to hidden, so you see just the chars which fit in the label and you dont have to deal with a different string.
I would like to let the user fill in some data to be submitted.
So I have a table with 7 cells, each of them are labeled so they know what data goes into the field.
I though about putting a UITextField in each cell, but it looks like its out of place and the user can enter up to 255 chars, so also it doesn't display the data so nicely.
Can anybody recommend a good way to handle this kind of thing, whats the best solution in your experience?
Maybe hiding the UITextField after they are done entering data and display the data in some other manner?
Kind Regards,
-Code
You can customize a UITextField in several different ways to make it not look out of place to you: things such as location, size, alignment, font, font size, background color, and etc. You can have the text field appearance change depending on whether the text field is in the selected table row or not.
You can also have a UITextField delegate pre-check any changes to the text field, and prohibit entering a text length greater than some number of characters, or illegal/unwanted characters, etc.
I am making simple application that will take hotel name and price of item, and I want to show the price in only number format, because it can not be in alphabatical format, so what should I do add in code so that only number will be inputted in the Price UITextField?
If you are not getting my question, you may ask anything again
I do appreciate if I will get proper way of doing this,
If you want your text field to accept only the numbers, you can set it's keyboardType property to UIKeyboardTypeNumberPad.
[yourTextField setKeyboardType:UIKeyboardTypeNumberPad];
There are different types of keyboardTypes available, which you can refer in UITextInputTraits Protocol Reference.
This could be done in the Interface Builder as well:
I have a UITextField for which I get input from some buttons that are part of the UI (so the input does not come form the phone's virtual keyboard). I want to limit that number of characters. I tried using the shouldChangeCharactersInRange, but it only works if the input comes form the virtual keyboard, and it doesn't work if the input comes from the buttons on the UI. Is there anyway I can solve this without programmatically having to count the characters in the text field every time I want to update it?
Thank you,
Mihai Fonoage
Implement the UITextField Delegate method shouldChangeCharactersInRange:
set the method to return YES when the length of the string is less than your maximum count.
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
if (textField.text.length<3) {
return YES;
}
return NO;
}
Since you are programmatically making changes to the UITextField once the user clicks the relevant buttons on the UI, you should keep track of the number of characters entered using a counter.
Increase the value of the counter every time a relevant UI button is touched. Update the textfield only if the counter value is <= maximum allowed no. of characters.
Check the length of the string property on the textField before accepting changes.
There is a textRectForBounds Property