I am quite new to iOS and Objective-c.
I am trying to auto generate a pList in my app that looks like this.
I've so far been able to create the file making it a normal Value => Key file if i replace my for loop by
for (NSString* exercisePictureName in bigPictureData) {
[data setObject:exercisePictureName forKey:exercisePictureName];
}
but my problem is that I have no idea how to structure the logic at the end of my loop to create a file structure like shown in the picture. As it has to be exact.
Could anyone point me in the right direction on how to structure my loop so that it creates the file with the right format????
- (void) createImageListFromSource {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"exercisePictures.plist"];
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath: path])
{
path = [documentsDirectory stringByAppendingPathComponent: [NSString stringWithFormat: #"exercisePictures.plist"] ];
}
//To insert the data into the plist
NSArray* bicepPictureData = [self getAllimagesThatStartWith:#"bicep-"];
NSArray* tricepPictureData = [self getAllimagesThatStartWith:#"tricep-"];
NSArray* absPictureData = [self getAllimagesThatStartWith:#"abs-"];
NSArray* chestPictureData = [self getAllimagesThatStartWith:#"chest-"];
NSArray* backPictureData = [self getAllimagesThatStartWith:#"back-"];
NSArray* bigPictureData = [bicepPictureData arrayByAddingObjectsFromArray:tricepPictureData];
bigPictureData = [bigPictureData arrayByAddingObjectsFromArray:absPictureData];
bigPictureData = [bigPictureData arrayByAddingObjectsFromArray:chestPictureData];
bigPictureData = [bigPictureData arrayByAddingObjectsFromArray:backPictureData];
NSArray* finalData = [[NSArray alloc] init];
for (NSString* exercisePictureName in bigPictureData) {
NSDictionary* data = [[NSDictionary alloc] initWithObjectsAndKeys:exercisePictureName,#"text",exercisePictureName,#"image", nil];
[finalData arrayByAddingObject:data];
NSLog(#"%#",data);
}
NSLog(#"%#",finalData);
[finalData writeToFile: path atomically:YES];
}
What you have is an array of dictionaries. Pseudocode to show the structure:
NSMutableArray* arr = [NSMutableArray array];
for (...) {
NSDictionary* d = #{#"image": something, #"text": somethingelse};
[arr addObject:d];
}
When you are all done, just save the array directly with writeToURL....
Related
I want to be able to view images from a web folder inside my iPhone app. I know how to view the images with a specific url (i.e. www.mywebsite.com/image.jpg). That's easy. I just don't know how to asynchronously load an array. Basically I need to view images with a specific sequence (i.e. mywebsite.com/image_001.jpg, image_002.jpg, image_003.jpg, etc). There may be 10 or 100 images in a folder with that sequence. How do I let my app load images with a sequence?
Following code will sort images of this file format "imageName_number.jpg"
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *webDir=[documentsDirectory stringByAppendingPathComponent:#"WebFolder"];
NSFileManager *filemgr;
NSMutableArray *fileNum;
fileNum=[[NSMutableArray alloc]init];
filemgr = [NSFileManager defaultManager];
//This will give all files of your web directory you can uncomment to get dynamically
//NSArray *filelist = [filemgr contentsOfDirectoryAtPath: webDir error: nil];
// this is just example shows how unsorted will be used to sort image no you can comment this line
NSArray *filelist=[[NSArray alloc]initWithObjects:#"abc_001.jpg",#"def_005.jpg",#"abc_002.jpg",#"abc_0103.jpg",#"abc_0010.jpg",#"abc_008.jpg", nil];
int count = (int)[filelist count];
NSMutableDictionary *dictFileNumWithPath=[[NSMutableDictionary alloc]init];
NSString *imageSeprator=#"_";
for (int i = 0; i < count; i++){
NSString *imageName=[filelist objectAtIndex: i];
if (!([imageName rangeOfString:imageSeprator].location == NSNotFound)) {
NSRange startRange = [imageName rangeOfString:imageSeprator];
NSRange endRange = [imageName rangeOfString:#".jpg"];
NSRange searchRange = NSMakeRange( startRange.location+1, endRange.location-endRange.length);
NSString *strNum= [imageName substringWithRange:searchRange];
NSString *webPath=[webDir stringByAppendingPathComponent:imageName];
[dictFileNumWithPath setObject:[NSNumber numberWithInt:[strNum intValue]] forKey:webPath];
}
}
NSArray *sortedKeysFilePathArray =
[dictFileNumWithPath keysSortedByValueUsingSelector:#selector(compare:)];
NSLog(#"%#", sortedKeysFilePathArray);
I hope someone can help, before asking we're using Plist to slimline the whole app. I am creating a plist when somebody selects a player. However what I want to do is create a plist with 15 blank array objects, this way I can just replace and edit as the user goes.
Any help would be appreciated. Thanks!
To create plist with 15 arrays you can use:
NSMutableArray * mainArray = [[NSMutableArray alloc] init];
for (int i = 0; i < 15; i++)
{
NSArray *array = [NSArray alloc] init];
[mainArray addObject:array];
}
[self saveToFile:mainArray];
Method for saving:
- (void)saveToFile:(NSArray*)ar
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"data.plist"];
[ar writeToFile:path atomically:YES];
}
Hope you find it useful.
I am using this code to get book names from a config.plist file. However my memory management is problematic. The '[dict release]' breaks the app completely and it exits.
The code works when the '[dict release]' is removed but it causes memory leaks as far as I can tell.
bnames is a global NSMutableArray
What am I doing wrong?
- (NSString *)loadBookname: (NSInteger) bookToLoad {
bookToLoad = [self bookOrder:bookToLoad];
//---get the path to the property list file---
plistFileNameConf = [[self documentsPath] stringByAppendingPathComponent:#"Config.plist"];
//---if the property list file can be found---
if ([[NSFileManager defaultManager] fileExistsAtPath:plistFileNameConf]) {
//---load the content of the property list file into a NSDictionary object---
dict = [[NSDictionary alloc] initWithContentsOfFile:plistFileNameConf];
bnames = [dict valueForKey:#"BookNames"];
[dict release];
}
else {
//---load the property list from the Resources folder---
NSString *pListPath = [[NSBundle mainBundle] pathForResource:#"Config" ofType:#"plist"];
dict = [[NSDictionary alloc] initWithContentsOfFile:pListPath];
bnames = [dict valueForKey:#"BookNames"];
[dict release];
}
plistFileNameConf = nil;
NSString *bookNameTemp;
bookNameTemp = [bnames objectAtIndex:bookToLoad - 1];
NSLog(#"bookName: %#", bookNameTemp);
return bookNameTemp;
}
You need to allocate your array properly:
bnames = [[NSArray alloc] initWithArray:[dict valueForKey:#"BookNames"]];
Double check that your dict returns the right data type.
There does not appear to be anything wrong with the way you allocate NSDictionary (although you could also use the [NSDictionary dictionaryWithContentsOfFile:] and save yourself having to worry about the release.
Either way I would suggest the issue is not with the [release] but probably the line BEFORE release:
bnames = [dict valueForKey:#"BookNames"];
a) Where is that allocated. I don't see an allocation or declaration of it anywhere?
b) What type of value do you expect back?
Put a break point on it and make sure your getting what you expect or anything.
If dict is not already a strong property, make it one. Then, use self.dict when assigning to it (and keep the release).
I've found what appears to be a better solution to the issue. This lets iOS manage the memory.
//---finds the path to the application's Documents directory---
- (NSString *) documentsPath {
NSLog(#"Start documentsPath");
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
// NSLog(#"Found documentsPath 40");
NSLog(#"End documentsPath");
return documentsDir;
}
- (NSString *) configPath {
NSLog(#"Start configPath");
NSString *plistFileNameConf = [[self documentsPath] stringByAppendingPathComponent:#"Config.plist"];
if (![[NSFileManager defaultManager] fileExistsAtPath:plistFileNameConf]) {
plistFileNameConf = [[NSBundle mainBundle] pathForResource:#"Config" ofType:#"plist"];
}
NSLog(#"plistFile: %#",plistFileNameConf);
NSLog(#"End configPath");
return plistFileNameConf;
}
The following calls the above code as necessary:
NSString *Choice;
NSArray *properties;
NSString *errorDesc = nil;
NSPropertyListFormat format;
NSData *plistXML = [[NSFileManager defaultManager] contentsAtPath:[self configPath]];
NSDictionary *temp = (NSDictionary *)[NSPropertyListSerialization propertyListFromData:plistXML mutabilityOption:NSPropertyListMutableContainersAndLeaves format:&format errorDescription:&errorDesc];
if (!temp) {
NSLog(#"Error reading plist: %#, format: %d", errorDesc, format);
}
Choice = [temp objectForKey:#"Choice"];
properties = [temp objectForKey:Choice];
I am using this code to add content into a plist :
//////////// Save data into plist /////////////////
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"datatesting.plist"];
NSLog(#"path='%#'",path);
NSFileManager *nfm = [[NSFileManager alloc] init];
if([nfm fileExistsAtPath:path])
{
// if file exists, get its contents, add more entries and write back
NSMutableArray *array = [[NSMutableArray alloc] initWithContentsOfFile:path];
NSArray *keys = [NSArray arrayWithObjects:#"Title",#"Description",#"Coordinate",nil];
[array addObject:[NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:[NSString stringWithFormat:#"%#",titlestring],[NSString stringWithFormat:#"%#",descriptionstring],[NSString stringWithFormat:#"%#",coordinadastring], nil] forKeys:keys]];
NSLog(#"modified array=%#",array);
BOOL ok = [array writeToFile:path atomically:YES];
if(!ok){
NSLog(#"Unable to write appended file");
return;
}
} else {
// if file doesn't exist, create a new one
NSMutableArray *array = [[NSMutableArray alloc] init];
NSArray *keys = [NSArray arrayWithObjects:#"Title",#"Description",#"Coordinate",nil];
[array addObject:[NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:[NSString stringWithFormat:#"%#",titlestring],[NSString stringWithFormat:#"%#",descriptionstring],[NSString stringWithFormat:#"%#",coordinadastring], nil] forKeys:keys]];
NSLog(#"new array=%#",array);
BOOL ok = [array writeToFile:path atomically:YES];
if(!ok){
NSLog(#"Unable to write new file");
return;
}
}
Now I am having issues in using the content of the plist. So my two questions are :
- What is the Keys of the dictionaries of the current plist ?
- What is the way to read the content in a Tableview ?
You have an array of dictionaries. You need to iterate on the contents of the array, then look at each dictionary. You can do this with block enumerators or the older for() style. I'll use the latter now as you may not know blocks.
NSArray *array = ...; // read in the array from the file
for(NSDictionary *dict in array) {
NSString *title = [dict objectForKey:#"Title"];
... etc
}
When you want to show this data in a tablview, the number of rows is the number of dictionaries (ie [array count]). If you wanted to show just the title for each cell, you would get the cell row number, then get the dictionary by [array objectAtIndex:cellRow]), then pull out the title as above.
This question already has an answer here:
Closed 10 years ago.
Possible Duplicate:
How to populate UITableView with plist
I save data to plist like this:
- (IBAction)save:(id)sender
{
NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsPath = [paths objectAtIndex:0];
NSString *plistPath = [documentsPath stringByAppendingPathComponent:#"data.plist"];
NSMutableArray *data = [NSMutableArray arrayWithContentsOfFile:plistPath];
if (nil == data) {
data = [[NSMutableArray alloc] initWithCapacity:0];
}
else {
[data retain];
}
NSMutableDictionary *array = [[NSMutableDictionary alloc]init];
[array setObject:label1.text forKey:#"Test1"];
[array setObject:label2.text forKey:#"Test2"];
[array setObject:label3.text forKey:#"Test3"];
[array setObject:label4.text forKey:#"Test4"];
NSLog(#"%#", array);
[data addObject:array];
[array release];
[data writeToFile:plistPath atomically: TRUE];
[data release];
}
NSLog:
2012-07-01 18:52:19.566 testapp[22651:707] {
Test1 = 40;
Test2 = 102;
Test3 = 153;
Test4 = 255;
}
How can I load saved data to uitableview?
To read it, do this:
NSMutableDictionary* plistDict = [[NSMutableDictionary alloc] initWithContentsOfFile:plistPath];
You should then be able to read the values for all the keys like this:
NSString *myValue = [plistDict objectForKey:#"someKey"];
edit:
After rereading your code it seems like you might be doing something you don't want to do. Your current plist structure is a top level array that adds a dictionary to itself every time you invoke "save". Is this what you're trying to do? If so, what represents a cell in your table, an index in the array?
If so, then you want to do
// top level array
NSMutableDictionary* plistArray = [[NSMutableDictionary alloc] initWithContentsOfFile:plistPath];
// individual dictionary at one array index (such as indexPath.row in cellForRowAtIndexPath)
NSMutableDictionary *dictionary = [plistArray objectAtIndex:yourIndex];
In any case, the object you have named "array" is actually a dictionary so you should rename it (or change it to be an array if that's what you want).