I am using a textview in which I have passed an array of objects. In that array I have taken a list of messages that would be passed to the textview, but I have changed the size of textview font so. give any suggestion and source code which is apply in my application.
Below my code in that I have apply the UIFont but that is not use in font.
msgtxtView.text=selectedmsg;
[msgtxtView setFont:[UIFont fontWithName:#"Arial" size:10]]
selectedmsg is array of object in that message list that would be pass to textview's object but output font size and arialfont not work give any.
Use this :
msgtxtView.text=selectedmsg;
[msgtxtView setFont:[UIFont fontWithName:#"ArialMT" size:10]]
Look at his example how to add text from array and change size (You changing size correctly):
NSMutableArray *array = [NSMutableArray arrayWithObjects:#"message1", #"message2", #"message3", #"message4", #"message5", nil];
for (int i=0; i<[array count]; i++) {
msgtxtView.text = [NSString stringWithFormat:#"%#%#\n",msgtxtView.text,[array objectAtIndex:i]];
}
[msgtxtView setFont:[UIFont fontWithName:#"Arial" size:10]];
Don't forget to IBOutlet msgtxtView.
Result:
And for example using this: [UIFont fontWithName:#"Chalkduster" size:25]:
Related
I am trying to change text font size with using NSAttributedString. But it's size doesn't change.
NSDictionary *attrDict = #{NSFontAttributeName : [UIFont boldSystemFontOfSize:22], NSForegroundColorAttributeName : [UIColor orangeColor]};
NSAttributedString *newAttString = [[NSAttributedString alloc] initWithString:mytext attributes:attrDict];
[result appendAttributedString:newAttString];
Only text color changes. Size of result string is not 22 and also it is not bold.
Instead of applying the attributes with the alloc, init, try doing it after with something like (with a mutable NSAttributedString):
NSMutableAttributedString *newAtt = [[NSMutableAttributedString alloc] initWithString:mytext]; // Allocate a new NSMutableAttributedString with `mytext`
[newAtt addAttributes:#{NSFontAttributeName : [UIFont boldSystemFontOfSize:20],
NSForegroundColorAttributeName: [UIColor orangeColor]}
range:NSMakeRange(0, [result length])]; // add new attributes for the length of the string `mytext`
[result setAttributedText:newAtt];
This answer would vary depending on what result is, I tested it on a UITextView and it worked fine, there is also an attributedText
property on UILabels.
Hope this helps.
You didn't mention what result means at the end of your code. Are you sure you want to "append" it?
Besides, I use this code for setting fonts
[UIFont fontWithName:#"Arial-BoldMT" size:22.0f]
This can be used to set different fonts and sizes respectively.
Hope this helps:)
Hi there i have image views in my application to change pictures in them. but their name like imageview1, imageview2, and so.. i create a string which like:
`("imageview%i", number)`
so my string is imageview1 for example. and i need to change
self."**mystring**".image = [uiimage ...]
I looked key-value coding but i couldn't get it exactly. i searched the forum and i can't get anything either. what could i do to resolve this. i think i must do an array with my uiimageviews inside of it. than compare their name with my string (i didn't know how can i get property names as nsstring). then return that image view. Please help.
If you want to do that in runtime, either hack your way using selectors or use tags on your UIImageViews. They are not really good programming concepts, but they work. Examples:
-(void)usingSelectors{
for(int i=0; i < 4; i++){
NSString* propName = [NSString stringWithFormat:#"imageview%d", i];
UIImageView* imageView = [self performSelector:NSSelectorFromString(propName)];
[imageView setImage:/*your image*/];
}
}
-(void)usingTags{
for(int i=0; i < 4; i++){
UIImageView* imageView = [self.view viewWithTag:i];
[imageView setImage:/*your image*/];
}
}
If you want to do that in compile time you'll have to use preprocessor macros, but I don't think that's your case.
I wan't to add labels (strings from an array) onto buttons with a for loop.
I'm new in objective-c and I don't know how I can fit all the changes into the loop on each iteration.
If there is a better way to do this, please show me. Right now I got this, which only prints the second element in the array out at upper right corner.
for (int i=0; i< sizeof(arrayOfLetters); i++ ) {
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(441,11,30,20)];
label.text = [NSString stringWithFormat:#"%#",[arrayOfLetters objectAtIndex:1]];
[self.view addSubview:label];
}
You are close. You want:
for (int i = 0; i < arrayOfLetters.count; i++) {
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(441, 11 + i * 25, 30, 20)];
label.text = arrayOfLetters[i];
[self.view addSubview:label];
}
You should also give each label a different frame as I did here. Adjust as needed.
Keep in mind that the sizeof function gives you the size of the variable. Since arrayOfLetters is an object pointer the result will probably be 4. You want the actual count of the array. See the docs for NSArray.
Also, do not needlessly use stringWithFormat:. Only use it when you actually have a string that needs formatting.
I have an NSAttributedString in a UITextView and would like to handle the UIContentSizeCategoryDidChangeNotification when working with Dynamic Type and specifically the text styles. All the examples I've seen (IntroToTextKitDemo) address the case where the font is the same for the whole UI element. Does anyone know how to handle this properly so all the attributes update properly?
Note: I asked this on the developer forums when iOS 7 was under NDA. I'm posting it here because I found a solution and thought others might find it useful.
I found a solution. When handling the notification you need to walk the attributes and look for the text styles and update the font:
- (void)preferredContentSizeChanged:(NSNotification *)aNotification
{
UITextView *textView = <the text view holding your attributed text>
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithAttributedString:textView.attributedText];
NSRange range = NSMakeRange(0, attributedString.length - 1);
// Walk the string's attributes
[attributedString enumerateAttributesInRange:range options:NSAttributedStringEnumerationReverse usingBlock:
^(NSDictionary *attributes, NSRange range, BOOL *stop) {
// Find the font descriptor which is based on the old font size change
NSMutableDictionary *mutableAttributes = [NSMutableDictionary dictionaryWithDictionary:attributes];
UIFont *font = mutableAttributes[#"NSFont"];
UIFontDescriptor *fontDescriptor = font.fontDescriptor;
// Get the text style and get a new font descriptor based on the style and update font size
id styleAttribute = [fontDescriptor objectForKey:UIFontDescriptorTextStyleAttribute];
UIFontDescriptor *newFontDescriptor = [UIFontDescriptor preferredFontDescriptorWithTextStyle:styleAttribute];
// Get the new font from the new font descriptor and update the font attribute over the range
UIFont *newFont = [UIFont fontWithDescriptor:newFontDescriptor size:0.0];
[attributedString addAttribute:NSFontAttributeName value:newFont range:range];
}];
textView.attributedText = attributedString;
}
I am bringing in some data from a JSON file and I want to change the font to courier but when I try to do the following I get this error: "Property 'font' not found on object NSString". Is there any way around this?
NSString *timePeriod = [diction objectForKey:#"Time Period"];
UIFont *changeFont = [UIFont fontWithName:#"Courier" size:12];
timePeriod.font = changeFont;
A font is part of an attributed string.
NSMutableAttributedString timeSringWithAttr = [[NSMutableAttributedString alloc] initWithString:timeString];
[timeStringWithAttr addAttribute:NSFontAttributeName
value:changeFont
range:NSRangeFromString(timeString)];
NSString just stores strings, it has no knowledge of fonts. If you want to set the font when you draw the string use the NSString AppKit additions:
https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/ApplicationKit/Classes/NSString_AppKitAdditions/Reference/Reference.html#//apple_ref/doc/uid/20000155
Basically, you want to set the font when you draw the string to screen.
The NSString class doesn't have font property, and it shouldn't since every String object is an array of characters.
Instead, use UILabel or UITextView, depends on your needs with text in it, and set font property on them.
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 200, 50)];
label.text = #"YOUR_TEXT";
label.font = [UIFont fontWithName:#"Courier" size:12.0f];
And in convention you shouldn't name variables with verb names, those are for functions.
Like UIFont *changeFont..