I would like to let users choose to store username or not at the login page, so my plist has 2 keys: userIsSaved(bool), and username(string)
Here's my script:
NSString *path = [[NSBundle mainBundle] pathForResource:#"userinfo" ofType:#"plist"];
NSMutableDictionary *plistDic = [[NSMutableDictionary alloc] initWithContentsOfFile: path];
BOOL userIsSaved = [[plistDic objectForKey:#"userIsSaved"] boolValue];
NSString *username = plistDic[#"username"];
if (lg.saveUserSwitch.isOn){
if (userIsSaved == false){
[plistDic setObject:[NSNumber numberWithBool:YES] forKey:#"userIsSaved"];
plistDic[#"username"] = lg.usernameFld.text;
[plistDic writeToFile: path atomically: YES];
if ([plistDic writeToFile: path atomically: YES] == NO) {
NSLog(#"!!!Save plist file failed");
}
}
}
I got some questions:
Why can't I write plistDic[#"userIsSaved"] = true to update the bool value? how to properly update it? [plistDic setObject:[NSNumber numberWithBool:YES] forKey:#"userIsSaved"] seems to change the type of it. How should I read it?
I can't write the plistDic to the plist. I don't know what's the problem.
Answer
You can't store a boolean (or integer or float or ...) into a dictionary - only an object can be stored. So you need to convert it to an object first, in this case, NSNumber as you did. You can also shortcut it with
plistDic setObject:#(YES) forKey:#"userIsSaved"]
To write first get the path to the correct directory, which typically is something like
NSURL * dir = [[NSFileManager.defaultManager URLsForDirectory:NSApplicationSupportDirectory
inDomains:NSUserDomainMask].firstObject
URLByAppendingPathComponent:NSBundle.mainBundle.bundleIdentifier
isDirectory:YES];
Then you can write using something like
NSString * myFile = [dir.path stringByAppendingPathComponent:#"mylist.plist"];
and then write to myFile in stead.
Note also maybe a good idea to use URLs.
Related
I'm trying to read and write data to my plist file, While the reading part goes well, the writing part does nothing.
I might be mistaken for the writing part - i can't see any changes in my file under my bundle - it is still empty after my changes, and when i close the app and open it again - i still see empty email address line.
The code for writing (and placing the plist in the document folder for future writings)
NSFileManager *fileManger=[NSFileManager defaultManager];
NSError *error;
NSArray *pathsArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *doumentDirectoryPath=[pathsArray objectAtIndex:0];
NSString *destinationPath= [doumentDirectoryPath stringByAppendingPathComponent:#"userData.plist"];
NSLog(#"plist path %#",destinationPath);
if ([fileManger fileExistsAtPath:destinationPath]){
NSLog(#"database localtion %#",destinationPath);
//return;
}
NSString *sourcePath = [[[NSBundle mainBundle] resourcePath]stringByAppendingPathComponent:#"userData.plist"];
[fileManger copyItemAtPath:sourcePath toPath:destinationPath error:&error];
NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile: sourcePath];
NSString *emailAddress = (NSString *)[dict objectForKey: #"emailAddress"];
if([emailAddress isEqualToString:#""])
{
// Do stuff
}
And for writing
NSArray *pathsArray = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *doumentDirectoryPath =[pathsArray objectAtIndex:0];
NSString *destinationPath = [doumentDirectoryPath stringByAppendingPathComponent:#"userData.plist"];
NSMutableDictionary *plistDict = [[NSMutableDictionary alloc] initWithContentsOfFile: destinationPath];
[plistDict setValue:#"myEmail#gmail.com" forKey:#"emailAddress"];
[plistDict writeToFile:destinationPath atomically: YES];
But as i said, nothing is changed in the file itself, and not even when i save, close the app and open it again (the string is always empty on my reading part)
Any help will be more than welcomed.
I've already looked at Parse Plist (NSString) into NSDictionary and deemed it to be not a duplicate, as that question and its answer do not address my concerns.
I have a .plist file in the file system structured like this:
The source code of this .plist file looks like this:
{
"My App" = {
"Side Panel" = {
Items = {
Price = "#123ABC";
};
};
};
}
I know how to get an item in the Root like this:
[[NSBundle mainBundle] pathForResource:#"filename" ofType:#"plist"];
NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile:path];
NSString value = [dict objectForKey:#"key"]);
But what if the structure is like mine, with tiered dictionaries? How do I get the value of Price?
I would like to do this all in one method, ideally like this:
Calling
NSString *hexString = [self getColorForKey:#"My App.Side Panel.Items.Price"];
Definition
- (NSString *) getColorForKey: (NSString *)key
{
NSArray *path = [key componentsSeparatedByString:#"."];
NSDictionary *colors = [NSDictionary dictionaryWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"Colors" ofType:#"plist"]];
NSString *color = #"#FFFFFF"; // white is our backup
// What do I put here to get the color?
return color;
}
Here's the solution that worked for me:
+ (NSString*) getHexColorForKey:(NSString*)key
{
NSArray *path = [key componentsSeparatedByString:#"."];
NSDictionary *colors = [NSDictionary dictionaryWithContentsOfFile:[[NSBundle mainBundle] pathForResource:#"Colors" ofType:#"plist"]];
NSString *color = #"#FFFFFF";
for (NSString *location in path) {
NSObject *subdict = colors[location];
if ([subdict isKindOfClass:[NSString class]])
{
color = (NSString*)subdict;
break;
}
else if ([subdict isKindOfClass:[NSDictionary class]])
{
colors = (NSDictionary*)subdict; // if it's a dictinoary, our color may be inside it
}
else
{
[SilverLog level:SilverLogLevelError message:#"Unexpected type of dictinoary entry: %#", [subdict class]];
return color;
}
}
return color;
}
where key is an NSString that matches /^[^.]+(\.[^.]+)*$/, meaning it looks like my targeted #"My App.Side Panel.Items.Price".
Yes I understand what you're looking to accomplish; thank you for the clarification. I will however add that the resources and advice I have written do provide the necessary information resolve your problem.
That said, the following gets your dictionary:
NSURL *plistURL = [[NSBundle mainBundle] URLForResource:#"Info" withExtension:#"plist"];
NSData *plistData = [NSData dataWithContentsOfURL:plistURL];
NSDictionary *tieredPlistData = [NSPropertyListSerialization propertyListWithData:plistData
options:kCFPropertyListImmutable
format:NULL
error:nil];
Then, if we're interested in the information contained in Items
NSDictionary *allItemsDictionary = tieredPlistData[#"My App"][#"Side Panel"][#"Items"];
Assuming that Items will contain a number of objects, you could use
NSArray *keys = [allItems allKeys];
for(NSString *key in keys){
NSString *colorValue = allItemsDictionary[key];
// do something with said color value and key
}
Or, if there is a single value you need, then just reference that key
NSString *colorForPriceText = allItemsDictionary[#"Price"];
But a few tips:
It's generally considered a better idea to keep frequently accessed values in code instead of a plist/file that is loaded at runtime.
That said, you wouldn't put your call to load from NSBundle in the same method you would use to query a specific value. In your example, every time you need a color, you end up re-accessing NSBundle and pile on unneeded memory allocations. One method would load the plist into an iVar NSDictionary and then that NSDictionary would be used separately by another method.
I have two UITextField
email
password
These two field values are stored in a NSMutableDictionary call userData. Now i want to save these two field values in a file, so that the records keep there and i can restore this record to check user login correctly. Here i want to accomplish that, but not working.
My code :
-(void) saveRegistrationData
{
userData = [[NSMutableDictionary alloc]
initWithObjects:[[NSMutableArray alloc] initWithObjects:#"123456", nil]
forKeys:[[NSMutableArray alloc] initWithObjects:#"admin#gmail.com", nil]];
[userData setObject:passwordTextField.text forKey:emailTextField.text];
NSString *savePath = [#"/MediaFiles/Documents/" stringByExpandingTildeInPath];
[userData writeToFile: savePath atomically: YES];
//[userData writeToFile:#"MediaFiles/Documents/" atomically:YES];
for (id key in userData)
{
NSLog(#"%# is for %#", key, [userData objectForKey:key]);
}
}
I think the path is not setting correctly. If any one similar with the solution, please share with me. Thanks in advanced. Have a good day.
It's not working for a few reasons.
1) You're writing to a folder in the root of the device's filesystem. Apple uses sandboxing to prevent this from happening as you could overwrite and modify any system files.
2) You're writing to a folder rather than a file. To write to a file, you need to specify a filename (and extension). i.e. "/MediaFiles/Documents/dnt_lk_at_dis.plist"
In order to fix these issues, you need to be firstly getting the path to the sandbox (documents directory) and then append the filepath.
NSString *docsPath = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *filename = #"secret.plist";
NSString *filePath = [docsPath stringByAppendingPathComponent:filename];
Furthermore, I strongly suggest that you instead use the keychain for storing sensitive user information. Anybody with a jailbroken device, or anybody that has access to the file system will be able to extract the user's information if it is stored in plain-text. At the very least, please encrypt the password before writing it to disk.
-(void) saveRegistrationData
{
userData = [[NSMutableDictionary alloc] init];
[userData setObject:passwordTextField.text forKey:#"password"];
[userData setObject:emailTextField.text forKey:#"email"];
// Alternative to the above:
userData = [[NSMutableDictionary alloc]
initWithObjects:[[NSMutableArray alloc] initWithObjects:passwordTextField.text, emailTextField.text, nil]
forKeys:[[NSMutableArray alloc] initWithObjects:#"password", #"email" nil]];
NSString *savePath = [#"/MediaFiles/Documents/myDict.plist" stringByExpandingTildeInPath]; // write to a file, not a dictionary
[userData writeToFile: savePath atomically: YES];
for (id key in userData)
{
NSLog(#"%# is for %#", key, [userData objectForKey:key]); // now you should see the result that you want to.
}
// Alternative for the above - the lazy way of doing it:
NSLog (#"theDictionary: %#", userData);
}
Please forgive me any typos or so. I did not compile it for you :-)
I know this is probably a silly question but I'm storing most of my game data in a plist - with that I'd like to include references to images used within my game - same hierarchal level as 'supporting files'. I have different types of images stored in 3 separate folders. One folder for example is called imageclue. How could I store the path in my plist, I'm stuck because I can't just store the path in my plist as string - filename.jpg. I've tried getting the path of the file but when I log it out it .
Sorry if I'm not explaining well and thank you in advance for any help :)
EDIT**
I have a plist file added to my program I don't want to programatically add to it as the images are constants - the screenshots below show a tutorial instead of the filename.jpg (because that won't work seen as my images are stored in a file) I wondered what path name do I use as a string.
The image is from a tutorial off of appcoda.com - where it says thumbnails are the image path files. If you look at where the images are stored on the left - they are stored with the program files. My images are in a folder in there so I'm confused as to what to enter in my plist for the image file.
Hope this clears up what I meant, sorry :)
Store three variables in .h file
#interface YourViewController : UIViewController
{
NSString *folder1;
NSString *folder2;
NSString *folder3;
}
in viewdidload:
-(void) viewdidLoad
{
//get the documents directory:
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
//getting the folder name:
folder1 = [NSString stringWithFormat:#"%#/imageclue",
documentsDirectory];
folder2 = [NSString stringWithFormat:#"%#/folder2",
documentsDirectory];
folder3 = [NSString stringWithFormat:#"%#/folder3",
documentsDirectory];
}
-(NSArray*) getPlistFromFolder:(NSString*)folder imageName:(NSString*)image
{
NSString *imageTitle = [NSString stringWithFormat:#"%#/image",
folder];
NSArray *data = [[NSArray alloc] initWithContentsOfFile:plistName];
return data;
}
So in the plist file, just store the image name.
Hope this helps...
Do it like this,
NSDictionary *imagePaths = #{#"image 1": [NSHomeDirectory() stringByAppendingPathComponent:#"image 1"]};
[self writeToPlist:imagePaths];
- (void)writeToPlist:imagePaths:(id)plist{
NSError *error;
NSData *data = [NSPropertyListSerialization dataWithPropertyList:plist format:kCFPropertyListXMLFormat_v1_0 options:0 error:&error];
if(error){
NSLog(#"Could not write to file");
return;
}
[data writeToFile:[self plistPath] atomically:YES];
}
Like wise loading is simple as this;
[self loadImagePathForImageNamed:#"image 1"];
- (NSString*)loadImagePathForImageNamed:(NSString*)imageName{
}
- (NSString*)loadImagePathForImageNamed:(NSString*)imageName{
NSData *data = [NSData dataWithContentsOfFile:[self plistPath]];
NSString *error;
NSPropertyListFormat format;
NSDictionary *dictionary = [NSPropertyListSerialization propertyListFromData:data mutabilityOption:NSPropertyListImmutable format:&format errorDescription:&error];
if(error){
NSLog(#"Could not open plist %#", error);
return nil;
}
return dictionary[imageName];
}
You may have to handle the error when the file is not there by creating a new one, otherwise this should work.
You are storing path right way, just need to store filename of image with extension in plist when your images are in your Application Bundle, for more reference you can define key name Instead "item1", "item2" in your plist.
Now coming to actual Question, how to access image from plist
Step 1 : Read your recipes.plist from Application Bundle
NSString *bundlePath = [[NSBundle mainBundle] pathForResource:#"recipes" ofType:#"plist"];
NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile:bundlePath];
Step 2 : Now Get Image/Thumbnails name out of it, which you want to load
Step 3 : Define following Function in your Controller, which returns image from name
- (UIImage *)getImageWithName:(NSString *)imageFileName
{
NSString *ext = [imageFileName pathExtension];
NSString *imagePath = [[NSBundle mainBundle] pathForResource:[imageFileName stringByDeletingPathExtension] ofType:ext];
return [UIImage imageWithContentsOfFile:imagePath];
}
HOW TO USE
Suppose you want to load Image with key "Item2" then write following code
NSString *imageFileName = [[dict objectForKey:#"Thumbnail"] valueForKey:#"Item2"];
UIImage *item2Image = [self getImageWithName:imageFileName];
For "Item6"
NSString *imageFileName1 = [[dict objectForKey:#"Thumbnail"] valueForKey:#"Item6"];
UIImage *item6Image = [self getImageWithName:imageFileName1];
I am implementing a application based on web services. In that I need to add a string as property in .plist and I need to get the value from the .plist whenever I need in the code.
Here is a code sample:
NSString *path = [[NSBundle mainBundle] pathForResource: #"YourPLIST" ofType: #"plist"];
NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile: path];
id obj = [dict objectForKey: #"YourKey"];
NSBundle* mainBundle = [NSBundle mainBundle];
// Reads the value of the custom key I added to the Info.plist
NSString *value = [mainBundle objectForInfoDictionaryKey:#"key"];
//Log the value
NSLog(#"Value = %#", value);
// Get the value for the "Bundle version" from the Info.plist
[mainBundle objectForInfoDictionaryKey:#"CFBundleVersion"];
// Get the bundle identifier
[mainBundle bundleIdentifier];
NSURL *url = [[NSBundle mainBundle] URLForResource:#"YOURPLIST" withExtension:#"plist"];
NSArray *playDictionariesArray = [[NSArray alloc ] initWithContentsOfURL:url];
NSLog(#"Here is the Dict %#",playDictionariesArray);
or you can use following also
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"Sample.plist"];
Get from plist is very simple.
NSString *path = [[NSBundle mainBundle] pathForResource:#"SaveTags" ofType:#"plist"];
if (path) {
NSDictionary *root = [NSDictionary dictionaryWithContentsOfFile:path];
}
If you want to add something to a plist, maybe you can find the answer here:
How to write data in plist?
But if you only want save some message in you app, NSUserDefaults is the better way.
You can not do this. Any Bundle wether it is iOS or Mac OS is readonly, you can only read to it and you can't create files, write or do anything with the files in a bundle. This is part of the Security features of apple. You can use the NSDocumentsDirectory to writr and read your stuff you need for your app
Swift
I know this was asked 12+ years ago. But this was the first SO question to come up via google. So to save time for everyone, here is how to do this in swift:
struct Config {
// option 1
static var apiRootURL: String {
guard let value = (Bundle.main.object(forInfoDictionaryKey: "BASE_URL") as? String), !value.isEmpty else {
fatalError("Base URL not found in PLIST")
}
return value
}
// option 2
static var databaseName: String {
guard let value = (Bundle.main.infoDictionary?["DB_NAME"] as? String), !value.isEmpty else {
fatalError("DB NAME not found in PLIST")
}
return value
}
}
Notice the 2 functions use slightly diffrent methods to access the plist. But in effect they are almost the same.
In theory there might not be a plist. Hence infoDictionary is optional. But in this case the first method will also return an unexpected value, resulting in an error.
One actual difference as noted by Apple:
Refering to Bundle.main.object(forInfoDictionaryKey: "BASE_URL")
Use of this method is preferred over other access methods because it returns the localized value of a key when one is available.