i have an UIPickerView and i want it to have 2 columns filled with items from my arrays, but i cant figure out how, there is my arrays:
-(void)fillingStandartWeightArray{
if (!standartWeightArray){
for (int i=25; i<150 ;i++){
NSString *weightString;
weightString = [NSString stringWithFormat:#"%d kg", i];
[standartWeightArray addObject:weightString];
NSLog(#"%#", weightString);
}
}
}
-(void)fillingStandartHeightArray{
if (!standartHeightArray){
for (int i=85; i<250; i++){
NSString *heightString;
heightString = [NSString stringWithFormat:#"%d cm", i];
[standartHeightArray addObject:heightString];
NSLog(#"%#", heightString);
}
}
}
To be more specific i don't know how to "tell" UIPickerView to fill one of it wheel with one array, and other one with other array. I tried this:
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{
if (component == 0){
return [standartWeightArray count];
} else {
return [standartHeightArray count];
}
}
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
return 2;
}
-(NSString*)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component{
if (component == 0)
return [standartWeightArray objectAtIndex:row];
else if (component == 1)
return [standartHeightArray objectAtIndex:row];
}
And i did call functions in viewDidLoad sections:
- (void)viewDidLoad
{
[super viewDidLoad];
[self fillingStandartWeightArray];
[self fillingStandartHeightArray];
NSLog(#"%#", standartWeightArray);
}
But that's not working.
Your datasource/delegate methods are perfect.
Take care of following things
1) Allocating standartHeightArray and standartWeightArray objects properly. Allocate array objects as below if you are not doing already.
-(void)fillingStandartWeightArray{
if (!standartWeightArray){
// Allocate the array
standartWeightArray = [NSMutableArray new];
for (int i=25; i<150 ;i++){
NSString *weightString;
weightString = [NSString stringWithFormat:#"%d kg", i];
[standartWeightArray addObject:weightString];
NSLog(#"%#", weightString);
}
}
}
-(void)fillingStandartHeightArray{
if (!standartHeightArray){
// Allocate the array
standartHeightArray = [NSMutableArray new];
for (int i=85; i<250; i++){
NSString *heightString;
heightString = [NSString stringWithFormat:#"%d cm", i];
[standartHeightArray addObject:heightString];
NSLog(#"%#", heightString);
}
}
}
2) Connect the delegate/datasource properties of picker properly. You can do it in interface builder or in code (in viewDidLoad)
Sure looks like you are setting everything up correctly to me.
But make sure you set the UIPickerView delegate and data source to the same object / class (ViewController?) where your PickerView data source methods live.
You can set this either in Xcode's Interface Builder, or at "viewDidLoad:" time programmatically (if you have your picker view set to an IBOutlet).
Related
I'm working on a tableview that displays data about a company. I want to divide the data over 3 sections, to make it look more organized.
The data about a company is retreived from a mysql database and I receive it in one array, which looks like this:
{
companyAdress = "the street 9";
companyCity = "city";
companyFacebook = "facebook.com/companyname";
companyName = "name";
companyPhoneNumber = "0123 456 789";
companyTwitter = "www.twitter.com/companyname";
companyWebsite = "www.companyname.com";
companyZip = "0000 AA";
imageNumber = "3067913";
}
I want the companyName and imageNumber in the first section, the companyAdress, companyZip and companyCity in the second, and all the remaining variables in the third section.
I do not know how to properly do this, and I haven't found a useful answer/solution for this on SO or any other website I know.
How to I do this? any help, sample code and/or tutorial would be much appreciated, thank you in advance!
One approach would be to separate the data when you receive it into a two-dimensional array. So the array's first entry would be an array holding companyName and imageNumber, and so on.
With this implementation, numberOfSectionsInTableView would simply return myArray.count and numberOfRowsInSection would return myArray[section].count.
To access the appropriate values from there, you would do something like ((NSMutableArray*)myArray[indexpath.section])[indexpath.row]
You must use a Array of NSDictionary items,
then you get info for sections and tables rows.
adding a key for each record type.
This is a sample project for explain the use of NSArray and NSDictonary, I hope this help you.
You can download the xcode project from here http://www.germinara.it/download/FGTestTableView.zip and this is the result of the sample http://www.germinara.it/download/FGtesttableview.png
#import <UIKit/UIKit.h>
#interface FGViewController : UIViewController <UITableViewDataSource,UITableViewDelegate> {
NSMutableArray* records;
}
#property(nonatomic,strong) IBOutlet UITableView *tblRecordsList;
-(void) buildDataSource; //Build the datasource for the tableview
#end
#import "FGViewController.h"
#interface FGViewController ()
#end
#implementation FGViewController
#synthesize tblRecordsList;
- (void)viewDidLoad
{
[super viewDidLoad];
records = [[NSMutableArray alloc] init];
//Load data into array used as datasource
[self buildDataSource];
self.tblRecordsList.dataSource=self;
self.tblRecordsList.delegate=self;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
//Load sample data
-(void) buildDataSource{
NSMutableDictionary* dict= nil;
[records removeAllObjects];
//Fill data source with your data
//Data to put on first section
dict=[NSMutableDictionary dictionaryWithCapacity:0];
[dict setObject:#"0" forKey:#"idsection"];
[dict setObject:#"company1" forKey:#"companyName"];
[dict setObject:#"picture1" forKey:#"imageNumber"];
[records addObject:dict]; //Add items to array
//Data to put on second section
dict=[NSMutableDictionary dictionaryWithCapacity:0];
[dict setObject:#"1" forKey:#"idsection"];
[dict setObject:#"address1" forKey:#"companyAdress"];
[dict setObject:#"zip1" forKey:#"companyZip"];
[dict setObject:#"city1" forKey:#"companyCity"];
[records addObject:dict]; //Add items to array
//Data to put on other section
dict=[NSMutableDictionary dictionaryWithCapacity:0];
[dict setObject:#"2" forKey:#"idsection"];
[dict setObject:#"facebook1" forKey:#"companyFacebook"];
[dict setObject:#"phone1" forKey:#"companyPhoneNumber"];
[dict setObject:#"twitter1" forKey:#"companyTwitter"];
[dict setObject:#"website1" forKey:#"companyWebsite"];
[records addObject:dict]; //Add items to array
}
//Get Dictionary using section key (idsection)
-(NSDictionary *) dictionaryForSection:(NSInteger) section{
for (NSDictionary *dict in records){
if(section == [[dict valueForKey:#"idsection"] intValue]){
return dict;
}
}
return nil;
}
//Table View Delegate
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell =nil;
cell = [tableView dequeueReusableCellWithIdentifier:#"myCellReuseID"];
NSDictionary * dict = [self dictionaryForSection:indexPath.section]; //Get request dictionary info
//Process data for first section
if(indexPath.section == 0){
if(indexPath.row == 0)
cell.textLabel.text=[dict valueForKey:#"companyName"];
if(indexPath.row == 1)
cell.textLabel.text=[dict valueForKey:#"imageNumber"];
}
//Process data for second section
if(indexPath.section == 1){
if(indexPath.row == 0)
cell.textLabel.text=[dict valueForKey:#"companyAdress"];
if(indexPath.row == 1)
cell.textLabel.text=[dict valueForKey:#"companyZip"];
if(indexPath.row == 2)
cell.textLabel.text=[dict valueForKey:#"companyCity"];
}
//Process data for other section
if(indexPath.section == 2){
if(indexPath.row == 0)
cell.textLabel.text=[dict valueForKey:#"companyFacebook"];
if(indexPath.row == 1)
cell.textLabel.text=[dict valueForKey:#"companyPhoneNumber"];
if(indexPath.row == 2)
cell.textLabel.text=[dict valueForKey:#"companyTwitter"];
if(indexPath.row == 3)
cell.textLabel.text=[dict valueForKey:#"companyWebsite"];
}
return cell;
}
//Number of sections (first,second and other => 3)
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 3;
}
- (NSString *)tableView:(UITableView *)theTableView titleForHeaderInSection:(NSInteger)section
{
NSString * sectionTitle =#"";
switch (section) {
case 0:
sectionTitle = #"title first section";
break;
case 1:
sectionTitle = #"title second section";
break;
case 2:
sectionTitle = #"title other section";
break;
default:
break;
}
return sectionTitle;
}
//Count number of record for sections
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
int nRecords=0;
int idSection =0;
//Count number of items for specified section
for (NSDictionary *dict in records){
idSection = [[dict valueForKey:#"idsection"] intValue];
if(section == idSection){
nRecords = [[dict allKeys] count] -1 ; //All dictionary Keys - 1 (the first key "idsection")
}
}
return nRecords;
}
#end
If this is a repost, I apologize, but I have been scouring the net and cant seem to find anything that works. I have a list of workouts that I display in a tableview that are gathered in plists in the bundle. There is a also a separate tab that I have that allows a user to build their own workouts and save them in the documents folder plist file. Once they are saved, they are added to the table view. In the simulator, everyuhting works fine. But on the actual device, it is not updated unless I close the program for an extended period of time, reload the program from xcode, or turn the phone off. I have tried adding [[self tableview] reload] to "viewDidLoad", "viewWillappear", and "viewDidAppear" and none of them work. Once again, the file is saved, the updating does work in the simulator, and it doesn't update in the phone right away. Any suggestions? Thanks.
Edit: i know it is a long piece of code, but should be straight forward (hopefully lol)
#import "BIDWODList.h"
#import "BIDWODDetails.h"
#define kFileName #"SavedDFWorkouts.plist"
#interface BIDWODList ()
#end
#implementation BIDWODList
#synthesize names;
#synthesize savedNames;
#synthesize keys;
#synthesize details;
#synthesize wodType;
#synthesize benchmarkGirls;
#synthesize theNewGirls;
#synthesize heroes;
#synthesize savedDFGWorkouts;
#synthesize chosenWOD;
#synthesize chosenDetails;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
NSMutableArray *buildBenchmarkGirls = [[NSMutableArray alloc] init];
NSMutableArray *buildTheNewGirls = [[NSMutableArray alloc] init];
NSMutableArray *buildHeroes = [[NSMutableArray alloc] init];
NSBundle *bundle = [NSBundle mainBundle];
NSURL *plistURL = [bundle URLForResource:#"CrossfitWOD" withExtension:#"plist"];
//put the contents of the plist into a NSDictionary, and then into names instance variable
NSDictionary *dictionary = [NSDictionary dictionaryWithContentsOfURL:plistURL];
self.names = dictionary;
//take all the keys in the dictionary and make an array out of those key names
self.keys = [self.names allKeys];
for (NSString *nameCheck in keys){
self.details = [names valueForKey:nameCheck];
if ([[self.details valueForKey:#"Type"] isEqualToString:#"The Benchmark Girls"]) {
[buildBenchmarkGirls addObject:nameCheck];
}else if ([[self.details valueForKey:#"Type"] isEqualToString:#"The New Girls"]) {
[buildTheNewGirls addObject:nameCheck];
}else {
[buildHeroes addObject:nameCheck];
}
}
NSString *filePath = [self dataFilePath];
NSMutableDictionary *savedWorkout = [[NSMutableDictionary alloc]initWithContentsOfFile:filePath];
self.savedNames = savedWorkout;
self.savedDFGWorkouts = [[savedWorkout allKeys] sortedArrayUsingSelector:#selector(compare:)];
self.benchmarkGirls = [buildBenchmarkGirls sortedArrayUsingSelector:#selector(compare:)];
self.theNewGirls = [buildTheNewGirls sortedArrayUsingSelector:#selector(compare:)];
self.heroes = [buildHeroes sortedArrayUsingSelector:#selector(compare:)];
//[[self tableView] reloadData]; //reloads the data in case a DFG workout was saved
}
- (void)viewDidUnload
{
[super viewDidUnload];
self.names = nil;
self.keys = nil;
self.benchmarkGirls = nil;
self.theNewGirls = nil;;
self.heroes = nil;
self.details = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (NSString *)dataFilePath {
NSArray *paths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
return [documentsDirectory stringByAppendingPathComponent:kFileName];
}
-(void)viewDidAppear:(BOOL)animated{
[[self tableView] reloadData];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 4;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
if (section == 0) {
return [benchmarkGirls count];
}else if (section == 1){
return [theNewGirls count];
}else if (section == 2){
return [heroes count];
}else{
return [savedDFGWorkouts count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSUInteger section = [indexPath section];
NSUInteger row = [indexPath row];
static NSString *SectionsTableIdentifier = #"SectionsTableIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:SectionsTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:SectionsTableIdentifier];
}
if (section == 0) {
cell.textLabel.text = [benchmarkGirls objectAtIndex:row];
}else if (section == 1) {
cell.textLabel.text = [theNewGirls objectAtIndex:row];
}else if (section == 2) {
cell.textLabel.text = [heroes objectAtIndex:row];
}else{
cell.textLabel.text = [savedDFGWorkouts objectAtIndex:row];
}
return cell;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
if (section == 0) {
return #" The Benchmark Girls";
}else if (section == 1){
return #"The New Girls";
}else if (section ==2){
return #"The Heroes";
}else{
return #"Saved DFG Workouts";
}
}
#pragma mark - Table view delegate
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
BIDWODDetails *destination = segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
NSUInteger section = [indexPath section];
NSUInteger row = [indexPath row];
if (section == 0) {
self.chosenWOD = [self.benchmarkGirls objectAtIndex:row];
self.chosenDetails = [names objectForKey:chosenWOD];
}else if (section == 1) {
self.chosenWOD = [self.theNewGirls objectAtIndex:row];
self.chosenDetails = [names objectForKey:chosenWOD];
}else if (section ==2) {
self.chosenWOD = [self.heroes objectAtIndex:row];
self.chosenDetails = [names objectForKey:chosenWOD];
}else {
self.chosenWOD = [self.savedDFGWorkouts objectAtIndex:row];
self.chosenDetails = [savedNames objectForKey:chosenWOD];
}//end if
//self.chosenDetails = [names objectForKey:chosenWOD];
//[destination setValue:chosenWOD forKey:#"chosenWOD"];
//[destination setValue:chosenDetails forKey:#"chosenDetails"];
destination.chosenWOD = self.chosenWOD;
destination.chosenDetails = self.chosenDetails;
}
#end
Different behaviour between the simulator and the device is often related to incorrect case being used in filenames - the simulator isn't case sensitive, and the device is. Check that you have the correct case used everywhere you reference the plist file.
Alternatively, on the simulator you are able to write directly to the application bundle, but on the device this is not possible and you can only write to certain directories in your application's sandbox, typically the documents directory. You would normally copy a plist to the documents directory on first run, and use that file thereafter.
If I understand right your code you load plist file only in viewDidLoad, but most likely this function called only when you first time load your view. To make it work you should load plist
in viewDidAppear. Something like this:
- (void)viewDidAppear {
NSBundle *bundle = [NSBundle mainBundle];
NSURL *plistURL = [bundle URLForResource:#"CrossfitWOD" withExtension:#"plist"];
//put the contents of the plist into a NSDictionary, and then into names instance variable
NSDictionary *dictionary = [NSDictionary dictionaryWithContentsOfURL:plistURL];
self.names = dictionary;
//take all the keys in the dictionary and make an array out of those key names
self.keys = [self.names allKeys];
for (NSString *nameCheck in keys){
self.details = [names valueForKey:nameCheck];
if ([[self.details valueForKey:#"Type"] isEqualToString:#"The Benchmark Girls"]) {
[buildBenchmarkGirls addObject:nameCheck];
}else if ([[self.details valueForKey:#"Type"] isEqualToString:#"The New Girls"]) {
[buildTheNewGirls addObject:nameCheck];
}else {
[buildHeroes addObject:nameCheck];
}
}
NSString *filePath = [self dataFilePath];
NSMutableDictionary *savedWorkout = [[NSMutableDictionary alloc]initWithContentsOfFile:filePath];
self.savedNames = savedWorkout;
self.savedDFGWorkouts = [[savedWorkout allKeys] sortedArrayUsingSelector:#selector(compare:)];
[self.tableView reloadData];
}
If it works in the Simulator and does not on the phone, almost for sure the problem is a timing issue. Saving files on a real phone takes much longer than on the simulator.
You should do the following:
when you save a file, log it, and log the return code from the save. If the way you save does not provide a return code, use NSFileManager to verify the file is in fact where it should be and even the size of it. This takes time to do but you should do it.
when your table is asking for the number of this and that, log it, and lot what is returned. You may find that that this comes before the files are saved.
It takes time and effort, but if you start logging all relevant things, you can find it. I just spend 6 hours today tracking down a race condition I had thought could never happen, and it was only after looking at a huge trail of messages that I was able to see the problem.
Almost for sure you will see that either file is not saved, its not where you thought it was, or that the phone timing means some events happen later than they do in the Simulator.
My numberOfComponentsInPickerView :
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 3;
}
My numberOfRowsInComponent :
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
if (component == 0)
return 100;
if (component == 1)
return 100;
if (component == 2)
return 100;
return 0;
}
My titleForRow like this:
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
if (component == 0)
return [NSString stringWithFormat:#"%d", row];
if (component == 1)
return [NSString stringWithFormat:#"%d", row];
if (component == 2)
return [NSString stringWithFormat:#"%d", row];
return 0;
}
my didSelectRow like this
after edited like Paras Joshi's said :
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
int year = [picker selectedRowInComponent:0];
int month = [picker selectedRowInComponent:1];
int day = [picker selectedRowInComponent:2];
if(viewPicker.tag == 1)
labelDate1.text = [year stringByAppendingFormat:#" : %d : %d", month, day];
else
labelDate2.text = [year stringByAppendingFormat:#" : %d : %d", month, day];
}
it still gives me error " bad receiver type 'int' " and i still don't get it how to fix it. how my label get data from titleForRow?
both input for year month and day all are number only (from 0 to 99) so that i wrote -> return [NSString stringWithFormat:#"%d", row];
i dont put data for my pickerview at - (void)viewDidLoad because i want my labelDate1 or labelDate2 got data from pickerview. is there any possible my label get data from pickerview like i wrote above? or must i write my data at - (void)viewDidLoad ?
for any help, thank you for watching my question.
In your program you are appending string to an integer that is the issue.
This code makes the issue. Because year is an integer.
labelDate1.text = [year stringByAppendingFormat:#" : %d : %d", month, day];
Please check with this code.
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
int year = [picker selectedRowInComponent:0];
int month = [picker selectedRowInComponent:1];
int day = [picker selectedRowInComponent:2];
NSString *date = #"";
if(viewPicker.tag == 1)
labelDate1.text = [date stringByAppendingFormat:#" %d : %d : %d",year, month, day];
else
labelDate2.text = [date stringByAppendingFormat:#"%d : %d : %d", year, month, day];
}
Did you set the UIPickerView's delegate?I mean, did your pickerView:didSelectRow:inComponent get called?
Hello #Piyo Piyo your
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
method is totally wrong, you are assigning NSInteger to NSString. Thats why you are getting en error. You should use NSArray for putting data in picker view row and picking data from here. Here i'm going to make a small sample code.
This is your viewController.h file...
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController<UIPickerViewDelegate, UIPickerViewDataSource>
{
UIPickerView *myPickerView;
NSMutableArray *arrayYear;
NSMutableArray *arrayMonth;
NSMutableArray *arrayDay;
UILabel *lblDay;
UILabel *lblMonth;
UILabel *lblYear;
}
#end
there are three array which will contain the data for day, month and year respectively and three UILabel for showing the data. and obviously one pickerview.
Now come to on your viewController.m part.
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// UIPickerView declaration by coding
myPickerView = [[UIPickerView alloc]initWithFrame:CGRectMake(0.0, 0.0, 320.0, 216.0)];
myPickerView.delegate = self;
myPickerView.showsSelectionIndicator = YES;
[self.view addSubview:myPickerView];
// add some day number to day array
arrayDay = [[NSMutableArray alloc]init];
for(int i=1;i<6;i++)
{
NSString *string = [NSString stringWithFormat:#"%d",i];
[arrayDay addObject:string];
}
// add some month string to month array
arrayMonth = [[NSMutableArray alloc]init];
[arrayMonth addObject:#"June"];
[arrayMonth addObject:#"July"];
[arrayMonth addObject:#"August"];
[arrayMonth addObject:#"September"];
[arrayMonth addObject:#"October"];
// add some year number to year array
arrayYear = [[NSMutableArray alloc]init];
for(int i=2006;i<2011;i++)
{
NSString *string = [NSString stringWithFormat:#"%d",i];
[arrayYear addObject:string];
}
//set initially text to day label
lblDay = [[UILabel alloc]initWithFrame:CGRectMake(10.0, 250.0, 90.0, 50.0)];
[lblDay setText:[arrayDay objectAtIndex:0]];
[self.view addSubview:lblDay];
//set initially text to month label
lblMonth = [[UILabel alloc]initWithFrame:CGRectMake(110.0, 250.0, 90.0, 50.0)];
[lblMonth setText:[arrayMonth objectAtIndex:0]];
[self.view addSubview:lblMonth];
//set initially text to year label
lblYear = [[UILabel alloc]initWithFrame:CGRectMake(210.0, 250.0, 90.0, 50.0)];
[lblYear setText:[arrayYear objectAtIndex:0]];
[self.view addSubview:lblYear];
//set initially selection to each component of UIPickerView
[myPickerView selectRow:1 inComponent:0 animated:NO];
[myPickerView selectRow:1 inComponent:1 animated:NO];
[myPickerView selectRow:1 inComponent:2 animated:NO];
}
//here you are returning the number of component, which are 3 in this case
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
{
return 3;
}
//this is your didSelectRow method and here you are assigning a new text to
//label accordingly to if condition
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
if(component == 0)
{
lblDay.text = [arrayDay objectAtIndex:row];
}
if(component == 1)
{
lblMonth.text = [arrayMonth objectAtIndex:row];
}
if(component == 2)
{
lblYear.text = [arrayYear objectAtIndex:row];
}
}
//this is your numberOf row in component in this case each component have 5
//rows thats why i wrote only return 5; here you can put if condition here for
//returning different rows for each component
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component;
{
return 5;
}
// and this is showing title on rows
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
{
if (component == 0)
return [arrayDay objectAtIndex:row];
else if (component == 1)
return [arrayMonth objectAtIndex:row];
else if (component == 2)
return [arrayYear objectAtIndex:row];
else
return 0;
}
I hope this tutorial will help you. Thank you!
I am using MFMailcomposerViewController in my App. Everything is working fine, except that I am in need to Have the no. of recipients and the list of recipients the user is sending to.
Any help or solution regarding this issue..
I dont there is a standard way to do this, the delegate method mailComposeController:didFinishWithResult:error: gives you a reference to the composer view controller after it has been dismissed, but there are no accessors on MFMailComposeViewController which you could use to get the recipient count
A workaround would be to examine the subviews of the view controller, find the text field which was used to hold the recipients and get the text: see here
Finally I got the Answer and wanted to share it... I took a great help from [blog]: http://jomnius.blogspot.com/2011/02/how-to-find-mfmailcomposeviewcontroller.html
for (int x=0; x<[emailArray count]-1; x++) {
NSLog(#"%d). %#",x+1,[emailArray objectAtIndex:x]);
NSString *element = [emailArray objectAtIndex:x];
NSArray *arr = [element componentsSeparatedByString:#" & "];
if ([arr count]==1) {
++emailCount;
}
else{
int more = [[[arr objectAtIndex:1] substringToIndex:1] intValue];
emailCount+=(more+1);
}
}
- (NSString *)findEmailAddresses:(UIView *)view depth:(NSInteger)count
{
NSString *eAddress = nil;
if (!view)
return eAddress;
NSMutableString *tabString = [NSMutableString stringWithCapacity:count];
for (int i = 0; i < count; i++)
[tabString appendString:#"-- "];
NSLog(#"%#%#", tabString, view);
if ([view isKindOfClass:[UITextField class]])
{
// MAGIC: debugger shows email address(es) in first textField
// but only if it's about max 35 characters
if (((UITextField *)view).text)
{
eAddress = [NSString stringWithString:((UITextField *)view).text];
NSLog(#"FOUND UITextField: %#", eAddress ? eAddress : #"");
[emailArray addObject:eAddress];
}
}
NSArray *subviews = [view subviews];
if (subviews) {
for (UIView *view in subviews)
{
NSString *s = [self findEmailAddresses:view depth:count+1];
if (s) eAddress = s;
}
}
return eAddress;
}
There is no way to do this as of iOS 6 as mail composition is now done through an XPC service call to a remote process (MailCompositionService). There is a great explanation here: http://oleb.net/blog/2012/10/remote-view-controllers-in-ios-6/. The lowest level in the view hierarchy is now an _UIRemoteView which interfaces to the remote process. The code from the blog post at http://jomnius.blogspot.com/2011/02/how-to-find-mfmailcomposeviewcontroller.html will now alway return nil.
I have a UIViewController (called AdjustViewController) that presents another UIViewController (called SourcePickerViewController) with a UIPickerView modally. I generate instances of the AdjustViewController and they in turn make a SourcePickerViewController. I make an NSDictionary and assign it and an integer to the AdjustViewController and it in turn sets the same properties in the SourcePickerController. This way I can reuse the controllers. The NSDictionary get set up in a UITableViewController that has all the AdjustViewControllers in it.
The problem comes when some of the pickers should have 1 component and some should have 2. The integer that I pass along is called numberOfComponents When I make a picker with numberOfComponents = 1 somehow it's changing to = 2 but I can't see how. I have NSLogs all over the place and I can see it happen as soon as the picker delegate method numberOfComponentsInPickerView is called. It's 1 right before and 2 right after.
There's obviously more code, but I think I have all the important parts. Although if that were true, maybe I'd know where the problem is!
Inside MenuViewController.m
- (void)viewDidLoad {
NSLog(#"ChemicalViewController launched");
self.title = #"Adjust Chemicals";
NSMutableArray *array = [[NSMutableArray alloc] init];
// Chlorine Controller
AdjustViewController *chlorineAdjustViewController = [[AdjustViewController alloc] initWithNibName:#"AdjustViewController" bundle:nil];
chlorineAdjustViewController.title = #"FC - Free Chlorine";
chlorineAdjustViewController.numberOfComponents = 2;
NSLog(#"Generating chlorine source dictionary");
NSDictionary *chlorineSourceDictionary = [self generateChlorineDictionary];
chlorineAdjustViewController.dictionaryOfSources = chlorineSourceDictionary;
[chlorineSourceDictionary release];
[array addObject:chlorineAdjustViewController];
[chlorineAdjustViewController release];
// CYA Controller
AdjustViewController *cyaAdjustViewController = [[AdjustViewController alloc] initWithNibName:#"AdjustViewController" bundle:nil];
cyaAdjustViewController.title = #"CYA - Cyanuric Acid";
cyaAdjustViewController.numberOfComponents = 1;
NSLog(#"Generating cya source dictionary");
NSDictionary *cyaSourceDictionary = [self generateCYADictionary];
cyaAdjustViewController.dictionaryOfSources = cyaSourceDictionary;
[cyaSourceDictionary release];
[array addObject:cyaAdjustViewController];
[cyaAdjustViewController release];
Inside AdjustViewController.m
// Present the picker for chlorine selection
- (IBAction)getChemicalSource {
SourcePickerViewController *sourcePickerViewController = [[SourcePickerViewController alloc] init];
sourcePickerViewController.delegate = self;
NSLog(#"getChemicalSource setting numberOfComponents %d", self.numberOfComponents);
sourcePickerViewController.numberOfComponents = self.numberOfComponents;
NSLog(#"getChemicalSource sending numberOfComponents %d", sourcePickerViewController.numberOfComponents);
sourcePickerViewController.dictionaryOfSources = self.dictionaryOfSources;
[self presentModalViewController:sourcePickerViewController animated:YES];
[sourcePickerViewController release];
}
#pragma mark -
#pragma mark Picker View Delegate Methods
// Returns the values from the picker if a source was chosen
- (void)sourcePickerViewController:(SourcePickerViewController *)controller
didSelectSource:(NSString *)source
andConcentration:(NSString *)concentration
andConstant:(float)constant
andIsLiquid:(BOOL)isLiquid {
sourceField.text = [[NSString alloc] initWithFormat:#"%#, %#", source, concentration];
[self updateAdvice];
NSLog(#"Returned source = %#, concentration = %#, sourceConstant = %1.7f, isLiquid = %d", source, concentration, constant, isLiquid);
[self dismissModalViewControllerAnimated:YES];
}
// Returns from the picker without choosing a new source
- (void)sourcePickerViewController:(SourcePickerViewController *)controller
didSelectCancel:(BOOL)didCancel {
[self updateAdvice];
NSLog(#"Returned without selecting source");
[self dismissModalViewControllerAnimated:YES];
}
Inside SourceViewController.m
- (void)viewDidLoad {
NSLog(#"SourcePickerViewController launched");
NSLog(#"viewDidLoad");
NSLog(#"Received numberOfComponents %d", self.numberOfComponents);
self.chemicalSources = dictionaryOfSources;
NSArray *components = [self.chemicalSources allKeys];
NSArray *sorted = [components sortedArrayUsingSelector:#selector(compare:)];
self.sources = sorted; // This array has the chemical sources
if (self.numberOfComponents = 2) {
NSString *selectedSource = [self.sources objectAtIndex:0];
NSArray *chemArray = [self.chemicalSources objectForKey:selectedSource];
NSMutableArray *concentrationArray = [[NSMutableArray alloc] init];
int num = [chemArray count];
for (int i=0; i<num; i++) {
[concentrationArray addObject:[[chemArray objectAtIndex:i] chemConcentration]];
}
self.concentrations = concentrationArray;
}
[super viewDidLoad];
}
#pragma mark -
#pragma mark Picker Data Source Methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
NSLog(#"numberOfComponentsInPickerView, self.numberOfComponents = %d", self.numberOfComponents);
return self.numberOfComponents;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
NSLog(#"numberOfRowsInComponent, self.numberOfComponents = %d", self.numberOfComponents);
if (component == kSourceComponent)
return [self.sources count];
return [self.concentrations count];
}
#pragma mark Picker Delegate Methods
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
if (component == kSourceComponent)
return [self.sources objectAtIndex:row];
return [self.concentrations objectAtIndex:row];
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
NSLog(#"didSelectRow, self.numberOfComponents = %d", self.numberOfComponents);
if (numberOfComponents = 2) {
if (component == kSourceComponent) {
NSString *selectedSource = [self.sources objectAtIndex:row];
NSArray *chemArray = [self.chemicalSources objectForKey:selectedSource];
NSMutableArray *concentrationArray = [[NSMutableArray alloc] init];
int num = [chemArray count];
for (int i=0; i<num; i++) {
[concentrationArray addObject:[[chemArray objectAtIndex:i] chemConcentration]];
}
self.concentrations = concentrationArray;
[picker selectRow:0 inComponent:kConcentrationComponent animated:YES];
[picker reloadComponent:kConcentrationComponent];
}
}
}
- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component {
if (component == kConcentrationComponent)
return 90;
return 205;
}
I didn't look through all of your code; Instead, I'd recommend writing out the properties for numberOfComponents instead of #synthesize'ing them. Just get rid of your #synthesize, and make:
- (int)numberOfComponents {
return m_numberOfComponents;
}
and
- (void)setNumberOfComponents(int aNumberOfComponents) {
m_numberOfComponents = aNumberOfComponents;
}
Then, set a breakpoint in your setNumberOfComponents function, and you should be able to see whenever it's getting called, so you can see what is going on. I hope that helps!