I need to convert the following to string and display
Overall, the \u2018\u2018typical\u2019\u2019 xyz is broadly expressed
I have tried all sort of uncode conversion
NSData *asciiData = [desc dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *encodedString = [[NSString alloc] initWithData:asciiData encoding:NSASCIIStringEncoding
and:
[NSString stringByReplacingOccurrencesOfString:#"\u2018" withString:#""]
without success.
Kindly suggest me a solution to this.
char cString[] = "\u2018\u2018typical\u2019\u2019";
NSString *string = [NSString stringWithCString:cString encoding:NSUTF8StringEncoding];
NSLog(#"string: %#", string);
NSLog output: string: ‘‘typical’’
or
NSData *data = [NSData dataWithBytes:cString length:strlen(cString)];
NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"string: %#", string);
NSLog output: string: ‘‘typical’’
Related
I'm having trouble saving to one variable letsMeet.startTimeLabel. Right after selecting NSLog shows the correct Value, however, after I save to another variable (letsMeet.endTimeLabel), letsMeet.startTimeLabel changes to (NULL). Below is the code:
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{
letsMeet = (LetsMeet *) [NSEntityDescription insertNewObjectForEntityForName:#"LetsMeet" inManagedObjectContext:managedObjectContext];
switch (actionSheet.tag)
{
case 1:
{
if (buttonIndex == 0)
{
UIDatePicker *startDatePicker = (UIDatePicker *)[actionSheet viewWithTag:kDatePickerTag1];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"dd"];
NSDate *selectedDate = [startDatePicker date];
NSDateFormatter *dayFormatter = [[NSDateFormatter alloc] init];
[dayFormatter setDateFormat:#"EEEE"];
NSDate *selectedDay= [startDatePicker date];
NSDateFormatter *monthFormatter = [[NSDateFormatter alloc] init];
[monthFormatter setDateFormat:#"MMMM"];
NSDate *selectedMonth = [startDatePicker date];
NSString *date = [[NSString alloc] initWithFormat:#"%#", [dateFormatter stringFromDate:selectedDate]];
DateLabel.text = date;
[letsMeet setDateLabel:date];
NSString *month = [[NSString alloc] initWithFormat:#"%#", [dayFormatter stringFromDate:selectedMonth]];
MonthLabel.text = month;
[letsMeet setMonthLabel:month];
NSString *day = [[NSString alloc] initWithFormat:#"%#", [monthFormatter stringFromDate:selectedDay]];
DayLabel.text = day;
[letsMeet setDateLabel:day];
NSDateFormatter *timeFormatter = [[NSDateFormatter alloc] init];
[timeFormatter setDateFormat: #"h:mm a"];
NSDate *selectedStartTime = [startDatePicker date];
NSString *startTime = [[NSString alloc] initWithFormat:#"%#", [timeFormatter stringFromDate:selectedStartTime]];
StartTimeLabel.text = startTime;
[letsMeet setStartTimeLabel:startTime];
NSError *error = nil;
if (![managedObjectContext save:&error]){
NSLog(#"Error Saving");
}
}
NSLog (#"This is the StartTime after selecting %#", letsMeet.startTimeLabel);
}
break;
case 2:
{
if (buttonIndex == 0)
{
UIDatePicker *endTimePicker = (UIDatePicker *)[actionSheet viewWithTag:kDatePickerTag2];
NSDateFormatter *endTimeFormatter = [[NSDateFormatter alloc] init];
[endTimeFormatter setDateFormat: #"h:mm a"];
NSDate *endSelectedTime = [endTimePicker date];
NSString *endTime = [[NSString alloc] initWithFormat:#"%#", [endTimeFormatter stringFromDate:endSelectedTime]];
EndTimeLabel.text = endTime;
[letsMeet setEndTimeLabel:endTime];
NSLog (#"This is the EndTime %#", letsMeet.endTimeLabel);
NSLog (#"This is the StartTime after selecting BOTH %#", letsMeet.startTimeLabel);
}
else if (buttonIndex == 1)
{
EndTimeLabel.text = #"Whenever";
[letsMeet setEndTimeLabel:EndTimeLabel.text];
}
NSError *error = nil;
if (![managedObjectContext save:&error]) {
}
}break;
// Handle the error.
}
}
-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
UIViewController *destinationViewController = segue.destinationViewController;
NSLog (#"Prepare For Segue StartTime %#", letsMeet.startTimeLabel);
NSLog (#"Prepare For Segue EndTime%#", letsMeet.endTimeLabel);
}
Here is the log:
2013-02-20 21:38:24.253 AppointmentTime[3129:c07] This is the StartTime after selecting 9:30 AM
2013-02-20 21:38:32.325 AppointmentTime[3129:c07] This is the EndTime 12:15 PM
2013-02-20 21:38:32.325 AppointmentTime[3129:c07] This is the StartTime after Selecting BOTH (null)
2013-02-20 21:38:34.069 AppointmentTime[3129:c07] Prepare For Segue StartTime (null)
2013-02-20 21:38:34.069 AppointmentTime[3129:c07] Prepare For Segue EndTime12:15 PM
Q: Why would letsMeet.startTimeLabel show up correct the first time and after selecting EndTime, it changes to NULL. Please note EndTime continues to show the correct Value all the way up to prepareForSegue. Weird!
According to your logs and code , you are entering the switch block twice. Which means you are entering the actionSheet:clickedButtonAtIndex: method twice. So each time you enter the method
letsMeet = (LetsMeet *) [NSEntityDescription insertNewObjectForEntityForName:#"LetsMeet" inManagedObjectContext:managedObjectContext];
statement is executed twice, in turn creating two objects. You can see this by doing a fetch from the store.
So you are checking for properties in two different objects and hence the null.
If you are using just one managed object, you can probably add a check for nil for the object before executing insertNewObjectForEntityForName:inManagedObjectContext:. This will make sure you are using the same object.
If you are using more than one object at the same time use the object id or some unique key to identify your object and manipulate it.
Edit:
You can check for nil with the following code:
if(letsMeet==Nil){
letsMeet = (LetsMeet *) [NSEntityDescription insertNewObjectForEntityForName:#"LetsMeet" inManagedObjectContext:managedObjectContext];
}
This will work only, if the object you are calling the actionSheet:clickedButtonAtIndex: method is always in memory. But since you are persisting you might want to fetch the object from the store and then check for no. of objects.
NSError *error;
NSFetchRequest *request = [[NSFetchRequest alloc] init];
[request setEntity:[NSEntityDescription entityForName:#"LetsMeet" inManagedObjectContext:managedObjectContext]];
NSArray *objectArray = [managedObjectContext executeFetchRequest:request error:&error]
if(objectArray.count==0){
letsMeet = (LetsMeet *) [NSEntityDescription insertNewObjectForEntityForName:#"LetsMeet" inManagedObjectContext:managedObjectContext];
}else{
letsMeet = (LetsMeet *)[objectArray objectAtIndex:0];
}
Note: If you need to persist only a couple of variables, core-data might be an overkill. Use NSUserDefaults instead and keep it simple.
I'm trying to copy an item from the iPod Library to my local storage space - for later playback. I've got the item URl but it's (ipod-library://item/item.mp3?id=2398084975506389321) any idea how to access the actual file?
Thanks,
Rick
This will work https://gist.github.com/3304992
-(void)mediaPicker:(MPMediaPickerController *)mediaPicker didPickMediaItems:(MPMediaItemCollection *)mediaItemCollection{
NSString *tempPath = NSTemporaryDirectory();
int i=1;
for (MPMediaItem *theItem in mediaItemCollection.items) {
NSURL *url = [theItem valueForProperty:MPMediaItemPropertyAssetURL];
AVURLAsset *songAsset = [AVURLAsset URLAssetWithURL:url options:nil];
AVAssetExportSession *exporter = [[AVAssetExportSession alloc] initWithAsset: songAsset presetName: AVAssetExportPresetPassthrough];
exporter.outputFileType = #"com.apple.coreaudio-format";
NSString *fname = [[NSString stringWithFormat:#"%d",i] stringByAppendingString:#".caf"];
++i;
NSString *exportFile = [tempPath stringByAppendingPathComponent: fname];
exporter.outputURL = [NSURL fileURLWithPath:exportFile];
[exporter exportAsynchronouslyWithCompletionHandler:^{
//Code for completion Handler
}];
}
[picker dismissViewControllerAnimated:YES completion:Nil];
}
use MPMediaPickerController to pick the media
This is how I'm doing it in Objective-C:
#import <CoreMedia/CoreMedia.h>
#import <AVFoundation/AVFoundation.h>
#import <CoreAudio/CoreAudio.h>
// or [NSURL URLWithString:#"ipod-library://item/item.mp3?id=2398084975506389321"]
NSURL *assetURL = [item valueForProperty:MPMediaItemPropertyAssetURL];
NSMutableData *data = [[NSMutableData alloc] init];
const uint32_t sampleRate = 16000;
const uint16_t bitDepth = 16;
const uint16_t channels = 2;
NSDictionary *opts = [NSDictionary dictionary];
AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:assetURL options:opts];
AVAssetReader *reader = [[AVAssetReader alloc] initWithAsset:asset error:NULL];
NSDictionary *settings = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithInt:kAudioFormatLinearPCM], AVFormatIDKey,
[NSNumber numberWithFloat:(float)sampleRate], AVSampleRateKey,
[NSNumber numberWithInt:bitDepth], AVLinearPCMBitDepthKey,
[NSNumber numberWithBool:NO], AVLinearPCMIsNonInterleaved,
[NSNumber numberWithBool:NO], AVLinearPCMIsFloatKey,
[NSNumber numberWithBool:NO], AVLinearPCMIsBigEndianKey,
nil];
AVAssetReaderTrackOutput *output = [[AVAssetReaderTrackOutput alloc] initWithTrack:[[asset tracks] objectAtIndex:0] outputSettings:settings];
[asset release];
[reader addOutput:output];
[reader startReading];
// read the samples from the asset and append them subsequently
while ([reader status] != AVAssetReaderStatusCompleted) {
CMSampleBufferRef buffer = [output copyNextSampleBuffer];
if (buffer == NULL) continue;
CMBlockBufferRef blockBuffer = CMSampleBufferGetDataBuffer(buffer);
size_t size = CMBlockBufferGetDataLength(blockBuffer);
uint8_t *outBytes = malloc(size);
CMBlockBufferCopyDataBytes(blockBuffer, 0, size, outBytes);
CMSampleBufferInvalidate(buffer);
CFRelease(buffer);
[data appendBytes:outBytes length:size];
free(outBytes);
}
[output release];
Here data will contain the raw PCM data of the track. Please note that you cannot directly access the file of a song or video, only its data through this method. You can compress it using e. g. FLAC (that's how I'm processing it in my tweak).
Since MonoTouch has an 1:1 mapping to Objective-C class and method names, this should be fairly easy to copy over. :)
I have been trying to add an object as an NSMutableDictionary to my array, which I am accessing from another view, and It doesn't seem to work. I want to be able to store the data in a plist which I access from a NSDictionary.
-(void)saveAlarm:(id)sender {
// Adding object for alarm to AlarmViewController
alarmArrayCopy = alarmViewController.alarmsTime;
NSMutableDictionary *newAlarm = [[NSMutableDictionary alloc] init];
[newAlarm setValue:labelTextField.text forKey:LABEL_KEY];
[newAlarm setValue:alarmPicker.date forKey:TIME_KEY];
[alarmArrayCopy addObject:(newAlarm)];
// Dismissing and tiding up.
[self.navigationController dismissModalViewControllerAnimated:YES];
[newAlarm release];
}
UPDATE: How do I add an NSDictionary to my plist database (my db is an array)?
Here is some new code, I updated the NSMutableDictionary to NSDictionary because in my plist you can only have normal dictionaries not a mutable one. But now it crashed and gives me a Thread 1:Program received signal: "SIGABRT".
NSString *path = [[NSBundle mainBundle] bundlePath];
NSString *finalPath = [path stringByAppendingPathComponent:#"data.plist"];
// Adding object for alarm to AlarmViewController
NSDictionary *newAlarm = [[NSDictionary alloc] init];
[newAlarm setValue:labelTextField.text forKey:LABEL_KEY];
[newAlarm setValue:[NSString stringWithFormat:#"%#", alarmPicker.date] forKey:TIME_KEY];
[newAlarm writeToFile:finalPath atomically:NO];
or
-(IBAction)saveAlarm:(id)sender {
// Adding object for alarm to AlarmViewController
NSString *time = [NSString stringWithFormat:#"%#", alarmPicker.date];
NSString *label = [NSString stringWithFormat:#"%#",labelTextField.text];
NSDictionary *newAlarm = [[NSDictionary alloc] initWithObjectsAndKeys:label, LABEL_KEY,time, TIME_KEY, nil];
self.alarmArrayCopy = alarmViewController.alarmsTime;
[alarmArrayCopy addObject:(newAlarm)];
// Dismissing and tiding up.
[newAlarm release];
[self.navigationController dismissModalViewControllerAnimated:YES];
}
First, you should use setObject:forKey: method for adding objects to NSMutableDictionary. Second, you should use initWithObjectsAndKeys: method if you are using NSDictionary.
The setValue:forKey is a method of the Key Value Coding protocol. That was described at here “
Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary?
”
So, you should do that,
NSDictionary *newAlarm = [[NSDictionary alloc] initWithObjectsAndKeys:
labelTextField.text, LABEL_KEY,
alarmPicker.date, TIME_KEY, nil];
[newAlarm setValue:alarmPicker.date forKey:TIME_KEY];
I am not quite sure, but I guess your error is because you can't send an instance of NSDate object to setValue:forKey method. You may use either setObject:forKey or change NSDate to NSString by [NSString stringWithFormat:"%#", alarmPicker.date].
Hope that helps.
My code sucessfully catalogs song names and ID's for my the entire music library. However, it will not actually play a song using this methodology and the console displays the following:
Message playbackState timed out.
Message nowPlayingItem timed out.
self.musicPlayer = [MPMusicPlayerController applicationMusicPlayer];
MPMediaQuery *everything = [[MPMediaQuery alloc] init];
NSArray *itemsFromGenericQuery = [everything items];
SongName = [[NSMutableArray alloc] init];
SongItem = [[NSMutableArray alloc] init];
NSString *songTitle;
NSString *songID;
//Collect names & ID for entire music library & put into arrays
for (MPMediaItem *song in itemsFromGenericQuery) {
songTitle = [song valueForProperty: MPMediaItemPropertyTitle];
[SongName addObject:songTitle];
songID = [song valueForProperty: MPMediaItemPropertyPersistentID];
[SongItem addObject:songID];
}
NSLog (#"%#", [SongName objectAtIndex:1]);
NSLog (#"%#", [SongItem objectAtIndex:1]);
// Play the second song in the list
MPMediaItemCollection *collection = [MPMediaItemCollection collectionWithItems:[NSArray arrayWithObject:[SongItem objectAtIndex:1]]];
[self.musicPlayer setQueueWithItemCollection:collection];
[self.musicPlayer play];
Once again, I'll answer my own question. The issue was that collectionWithItems: expects an array of MPMediaItems, not an array of MPMediaItemPropertyPersistentIDs. Here is the working code for anyone who may have the same problem:
MPMediaQuery *everything = [[MPMediaQuery alloc] init];
NSArray *itemsFromGenericQuery = [everything items];
SongItem = [[NSMutableArray alloc] init];
for (MPMediaItem *song in itemsFromGenericQuery) {
NSString *songTitle = [song valueForProperty: MPMediaItemPropertyTitle];
//NSLog (#”%#”, songTitle);
songID = [song valueForProperty: MPMediaItemPropertyPersistentID];
//NSLog (#”%#”, songID);
[SongItem addObject:songID];
}
//Choose the first indexed song
NSString *selectedTitle = [SongItem objectAtIndex:0];
//Use the MPMediaItemPropertyPersistentID to play the song
MPMediaPropertyPredicate *predicate = [MPMediaPropertyPredicate predicateWithValue:selectedTitle forProperty:MPMediaItemPropertyPersistentID];
MPMediaQuery *mySongQuery = [[MPMediaQuery alloc] init];
[mySongQuery addFilterPredicate: predicate];
[musicPlayer setQueueWithQuery:mySongQuery];
[musicPlayer play];
Hello
Could anyone help me update this snippent to iOS 4.2:
-(void) whatever{
NSData *htmlData = [[NSString stringWithContentsOfURL:[NSURL URLWithString: #"http://www.objectgraph.com/contact.html"]] dataUsingEncoding:NSUTF8StringEncoding];
TFHpple *xpathParser = [[TFHpple alloc] initWithHTMLData:htmlData];
NSArray *elements = [xpathParser search:#"//h3"]; // get the page title - this is xpath notation
TFHppleElement *element = [elements objectAtIndex:0];
NSString *myTitle = [element content];
NSLog(myTitle);
[xpathParser release];
[htmlData release];}
The only part that needs updating is below, you can effectivly forget the rest:
NSData *htmlData = [[NSString stringWithContentsOfURL:[NSURL URLWithString: #"http://www.objectgraph.com/contact.html"]] dataUsingEncoding:NSUTF8StringEncoding];
"stringWithContentsOfURL" has been deprechiated so what would be the updated version?
Thanks
You should use
+ (id)stringWithContentsOfURL:(NSURL *)url encoding:(NSStringEncoding)enc error:(NSError **)error
And use it like that. Replace
NSData *htmlData = [[NSString stringWithContentsOfURL:[NSURL URLWithString: #"http://www.objectgraph.com/contact.html"]] dataUsingEncoding:NSUTF8StringEncoding];
by
NSData *htmlData = [[NSString stringWithContentsOfURL:[NSURL URLWithString: #"http://www.objectgraph.com/contact.html"]] encoding:NSUTF8StringEncoding error:nil];