If

    NSIndexPath *p = ... // some indexpath

then

    NSInteger row = p.row;
    NSInteger section = p.section;

That&#39;s all!


Maybe, this is can help you

    NSInteger variable = indexPath.row;

In **Swift**:

        let section: Int = indexPath.section
        let row: Int = indexPath.row

I prefer doing it this way 

    NSNumber *selRow = [[NSNumber alloc] initWithInteger:indexPath.row];

Simply convert into int by,

NSIndexPath *path =  ... // some indexpath

int row = (int)path.row;


In swift : 

1. Associate your collection view to your var :

    @IBOutlet weak var collectionView: UICollectionView!

2. In `prepareForSegue` func, you can call :

    var indexPath =  collectionView.indexPathsForSelectedItems()

I&#39;m doing an application for Android and something I need is that it shows a list of all files and directories in the SD Card and it has to be able to move through the different directories. I found [a good tutorial in anddev](http://www.anddev.org/viewtopic.php?t=67). I modified a few things so the application moves in the SD Card and not in Android root Directories but the rest is mostly the same.

This is my xml file for the activity:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;ListView xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    	android:id=&quot;@id/android:list&quot;  		
    	android:layout_width=&quot;fill_parent&quot;
      	android:layout_height=&quot;fill_parent&quot;&gt;
    	&lt;TextView 
        	android:layout_width=&quot;fill_parent&quot;
        	android:layout_height=&quot;wrap_content&quot; /&gt;
    &lt;/ListView&gt;

And this is the code for the Activity:

    import hackreatorz.cifrador.R;
    import java.io.File;
    import java.util.ArrayList;
    import android.app.ListActivity;
    import android.content.res.Configuration;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.ArrayAdapter;
    import android.widget.ListView;
    import android.widget.Toast;
    
    public class ArchivosSD extends ListActivity {
    	
    	private ArrayList&lt;String&gt; directoryEntries = new ArrayList&lt;String&gt;();
    	private File currentDirectory = new File(&quot;/sdcard/&quot;);
    	
    	@Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            browseToSD();
        }
    	
    	@Override
    	public void onConfigurationChanged(Configuration newConfig) {
    		super.onConfigurationChanged(newConfig);
    	}
    
    	private void browseToSD() {
    		browseTo(new File(&quot;/sdcard/&quot;));
    	}
    	
    	private void upOneLevel() {
    		 if(this.currentDirectory.getParent() != null)
                 this.browseTo(this.currentDirectory.getParentFile());
    	}
    
    	private void browseTo(final File directory) {
    		if (directory.isDirectory()) {
    				this.currentDirectory = directory;
    				fill(directory.listFiles());
    		} else {
    				Toast.makeText(ArchivosSD.this, this.directoryEntries.get(this.getSelectedItemPosition()), Toast.LENGTH_SHORT).show();
    				}
    	}
    	
    	private void fill(File[] files) {
    		this.directoryEntries.clear();
    		this.directoryEntries.add(getString(R.string.current_dir));
    		if(this.currentDirectory.getParent() != null)
    			this.directoryEntries.add(getString(R.string.up_one_level));
    			int currentPathStringLength = (int) this.currentDirectory.getAbsoluteFile().length();
    			for (File file : files) {
    				this.directoryEntries.add(file.getAbsolutePath().substring(currentPathStringLength));			
    			}
    		setListAdapter(new ArrayAdapter&lt;String&gt;(this, R.layout.archivos_sd, this.directoryEntries));
    	}	
    		
    	@Override
    	protected void onListItemClick(ListView l, View v, int position, long id) {
    		int selectionRowID = (int) this.getSelectedItemPosition();
    		String selectedFileString = this.directoryEntries.get(selectionRowID);
    		if (selectedFileString.equals(&quot;.&quot;)) {
    			this.browseToSD();
    		} else if(selectedFileString.equals(&quot;..&quot;)) {
    			this.upOneLevel();
    		} else {
    			File clickedFile = null;
    			clickedFile = new File(this.currentDirectory.getAbsolutePath() + this.directoryEntries.get(selectionRowID));
    			if(clickedFile != null)
    				this.browseTo(clickedFile);
    			}
    	}
    }

I don&#39;t get any errors in Eclipse, but I get a Force Close when running the application on my phone  and when I look at Logcat I see the following:

&gt; *01-01 23:30:29.858: ERROR/AndroidRuntime(14911): FATAL EXCEPTION: main*
&gt; *01-01 23:30:29.858: ERROR/AndroidRuntime(14911): java.lang.UnsupportedOperationException: addView(View, LayoutParams)
&gt; is not supported in AdapterView*

I don&#39;t have a clue what to do, I&#39;ve looked up in Google and I didn&#39;t find anything and I did the same at stackoverflow. This is my first aplication in Java and for Android so I&#39;m a real n00b and if the answer was there, I didn&#39;t understand it so I would really appreciate if you could explain what I should do to fix this error and why.

Thanks for everything in advance.




Logcat error: &quot;addView(View, LayoutParams) is not supported in AdapterView&quot; in a ListView

I read in text books that the stack grows by decreasing memory address; that is, from higher address to lower address. It may be a bad question, but I didn&#39;t get the concept right.  Can you explain?

Why does the stack address grow towards decreasing memory addresses?

I need to convert a nsindexpath var into NsInteger or simply an int.
e.g: 

     int rowIndex = [mGoogleBaseTable selectedRow];
     //mGoogleBaseTable is a NSTable type in Macdevelopement..

&amp;&amp;

    int rowIndex = [mGoogleBaseTable indexPathForSelectedRow];
    //mGoogleBaseTable is a UITableView type in Iphone (iOS)Development.

selectedRow returns NSInteger simply but indexPathForSelectedRow returns a NSIndexPath..

Please help me how can i achieve this.

How to convert NSIndexpath into NSInteger or simply int?

I need to convert a nsindexpath var into NsInteger or simply an int.
e.g:
<pre><code class="hljs language-ini"> int rowIndex = [mGoogleBaseTable selectedRow];
 //mGoogleBaseTable is a NSTable type in Macdevelopement..
</code></pre>
&#x26;&#x26;
<pre><code class="hljs language-arduino">int rowIndex = [mGoogleBaseTable indexPathForSelectedRow];
//mGoogleBaseTable is a UITableView type in Iphone (iOS)Development.
</code></pre>
selectedRow returns NSInteger simply but indexPathForSelectedRow returns a NSIndexPath..
Please help me how can i achieve this.

I am showing a modal view which is a `UITableViewController` class.  For some reason it won&#39;t show the navigation bar when I show it.  Here is my code:

    SettingsCreateAccount *detailViewController = [[SettingsCreateAccount alloc] initWithStyle:UITableViewStyleGrouped];
    	detailViewController.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    	detailViewController.navigationController.navigationBarHidden = NO;
    	[self.navigationController presentModalViewController:detailViewController animated:YES];
    	detailViewController = nil;
    	[detailViewController release];

I thought it was shown by default?  If it helps, I am calling this from another class that is also a `UITableViewController` managed by a `UINavigationController`.  Ideas?

iPhone: Show modal UITableViewController with Navigation bar

how can I check if this exists?:

    [[dataArray objectAtIndex:indexPathSet.row] valueForKey:@&quot;SetEntries&quot;]

I want to know whether this key exists or not. How can I do that?

Thank you very much :)

**EDIT:
dataArray has Objects in it. And these objects are NSDictionaries.**

Check key exists in NSDictionary

Lets say we have a custom UITableViewCell

So whenever I click custom button on cell.. it should expand to the some extent (you can say 40 height more...) and when i click again to the same custom button it should collapse to the previous height.

Developer&#39;s please guide me.. how can I achieve this task

UITableViewCell expand on click

I have difficulty adding a subview (UIView) from within the viewDidLoad method of a UITableViewController

This works:

    [self.view addSubview:self.progView];

But you can see the table cell lines bleed through the UIView progView.

I&#39;ve tried this approach:

    [self.view.superview insertSubview:self.progView aboveSubview:self.view];

Which is an attempt to add the progView, UIView to the superview, above the current view. When I try this, the UIView never appears.

-- UPDATE --

Following is the latest attempt:

    UIView *myProgView = (UIView *)self.progView; //progView is a method that returns a UIView

    [self.tableView insertSubview:myProgView aboveSubview:self.tableView]; 
    [self.tableView bringSubviewToFront:myProgView];

Result is the same as [self.view addSubview:self.progView]; The UIView appears but seemingly behind the Table. 







How to add a UIView above the current UITableViewController

How do I go about creating a custom keyboard/keypad that will show up when some one taps on a UITextField?  I would like to display a keypad with a, b, c, 1, 2, 3 and an enter button, nothing else.  The keypad should work and behave like the standard keyboard does (in behavior) but it will definitely look different.

I can&#39;t find any example and the best I&#39;ve found is to filter characters with existing keyboard which is an unacceptable solution.


How to create a custom keyboard

Is it possible to pass an Objective-C block for the `@selector` argument in a `UIButton`?  i.e., Is there any way to get the following to work?

		[closeOverlayButton addTarget:self 
							   action:^ {[anotherIvarLocalToThisMethod removeFromSuperview];} 
					 forControlEvents:UIControlEventTouchUpInside];

Thanks

Can I pass a block as a @selector with Objective-C?

I am going to use `NSHTTPCookieStorage` in an iOS App to manage cookies that are retrieved from a url, and I understand that it will manage cookies during your application&#39;s runtime. However, I was wondering if it&#39;s possible to persist cookies after the application has closed. And then read those cookies again when the app is opened again. Does `NSHTTPCookieStorage` persist cookies between app uses? Or just during the applications runtime? Do I need to use `CoreData` to persist these cookies?`

Persisting Cookies In An iOS Application?

I can create `UIImage` from `NSData` using `[UIImage imageWithData:]` or `[UIImage initWithData:]` methods.   

I wonder if I can get the `NSData` back from an existing `UIImage`?
Something on the line of `NSData *myData = [myImage getData];`

Get underlying NSData from UIImage

I am using MKMapView and have added a number of annotation pins to the map about a 5-10 kilometre area. When I run the application my map starts zoomed out to show the whole world, what is the best way to zoom the map so the pins fit the view?

**EDIT:**
My initial thinking would be to use MKCoordinateRegionMake and calculate the coordinate centre, longitudeDelta and latitudeDelta from my annotations. I am pretty sure this will work, but I just wanted to check I was not missing anything obvious.

Code added, BTW: FGLocation is an class that conforms to `MKAnnotation`, locationFake is an `NSMutableArray` of these objects. Comments are always welcome ....

    - (MKCoordinateRegion)regionFromLocations {
        CLLocationCoordinate2D upper = [[locationFake objectAtIndex:0] coordinate];
        CLLocationCoordinate2D lower = [[locationFake objectAtIndex:0] coordinate];
        
        // FIND LIMITS
        for(FGLocation *eachLocation in locationFake) {
            if([eachLocation coordinate].latitude &gt; upper.latitude) upper.latitude = [eachLocation coordinate].latitude;
            if([eachLocation coordinate].latitude &lt; lower.latitude) lower.latitude = [eachLocation coordinate].latitude;
            if([eachLocation coordinate].longitude &gt; upper.longitude) upper.longitude = [eachLocation coordinate].longitude;
            if([eachLocation coordinate].longitude &lt; lower.longitude) lower.longitude = [eachLocation coordinate].longitude;
        }
        
        // FIND REGION
        MKCoordinateSpan locationSpan;
        locationSpan.latitudeDelta = upper.latitude - lower.latitude;
        locationSpan.longitudeDelta = upper.longitude - lower.longitude;
        CLLocationCoordinate2D locationCenter;
        locationCenter.latitude = (upper.latitude + lower.latitude) / 2;
        locationCenter.longitude = (upper.longitude + lower.longitude) / 2;
    
        MKCoordinateRegion region = MKCoordinateRegionMake(locationCenter, locationSpan);
        return region;
    }




Zooming MKMapView to fit annotation pins?

Is it possible to add a standard-looking badge to a standard `UIButton`?

If it&#39;s not supported semi-natively, what would be the simplest way to achieve this?

Example image:

![An iPhone UI button][1]

  [1]: http://i.stack.imgur.com/ij89N.png

Content Type	Original Author	Original Content on Stackoverflow
Question	Tarun	View Question on Stackoverflow
Solution 1 - Iphone	mvds	View Answer on Stackoverflow
Solution 2 - Iphone	PS.OHM	View Answer on Stackoverflow
Solution 3 - Iphone	King-Wizard	View Answer on Stackoverflow
Solution 4 - Iphone	verma	View Answer on Stackoverflow
Solution 5 - Iphone	Pavitha	View Answer on Stackoverflow
Solution 6 - Iphone	Wiza	View Answer on Stackoverflow

How to convert NSIndexpath into NSInteger or simply int?

Iphone Problem Overview

Iphone Solutions

Solution 1 - Iphone

Solution 2 - Iphone

Solution 3 - Iphone

Solution 4 - Iphone

Solution 5 - Iphone

Solution 6 - Iphone

Why does the stack address grow towards decreasing memory addresses?

Logcat error: "addView(View, LayoutParams) is not supported in AdapterView" in a ListView

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