UITextView displaying all the values from array

Question

I stored some text value in server. I successfully fetched that text value and stored to local database file. Then added that values to array. when i display that array values to UITextView. But textview displaying all the values. I have button to click index. If i click first button i need to display first text. Then next for next button. If i click every button, it displays all the values.

code:

-(void)dbClicked:(id)sender{


    [mmageView setImage:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[productimg_array objectAtIndex:[sender tag]-1]]]]];


    [self.view addSubview:mmageView];
UITapGestureRecognizer *singletapp=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(singleTap:)];
    singletapp.numberOfTapsRequired=1;

    [mmageView addGestureRecognizer:singletapp];

}



- (void)singleTap:(UIGestureRecognizer *)singletap {

        UITextView *txt=[[UITextView alloc]initWithFrame:CGRectMake(50, 50, 150,150)];
                NSMutableString *string = [NSMutableString string];    

            for(int i=0;i<[descript_array count];i++){

                NSLog(@"descript array is  is %d",i);

      txt.text = [descript_array objectAtIndex:i];


              }

            [self.view addSubview:txt];

}

NSLog:

descript array is  is 14

string is the name is  image with black color
the name is image with black color
the name is image with white color
the name is 
the name is 
the name is 
the name is 
the name is 
the name is 
the name is 
the name is 
the name is 

descript array is  is 15

    string is the name is  image with black color
    the name is image with black color
    the name is image with white color
    the name is 
    the name is 
    the name is 
    the name is 
    the name is 
    the name is 
    the name is 
    the name is 
    the name is

Bhavesh Nayi · Accepted Answer · 2013-09-03 08:32:10Z

1

- (void)viewDidLoad
{
    UITextView *txt=[[UITextView alloc]initWithFrame:CGRectMake(50, 50, 150,150)];
    [self.view addSubview:txt];

    NSString *str_text;

    for(int i=0;i<[descript_array count];i++)
    {
        str_text = [NSString stringWithFormat:@"%@ %@",str_text,[descript_array objectAtIndex:i]];
        //[str_text retain];
    }
    txt.text = str_text;
    txt.editable=FALSE;

}

edited Sep 3, 2013 at 8:32

answered Sep 3, 2013 at 7:18

Bhavesh Nayi

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5 Comments

Jamal Zafar Over a year ago

wahooo...you are retaining the str_text AS MANY TIMES as the no. of elements in the array!! For 1K entries there will be 1K retains!!

Bhavesh Nayi Over a year ago

then str retain out in loop

kumar123 Over a year ago

@BhaveshNai no need to reatin str.Yes it retain out in loop.If you are reatining make a way to release.From above code it seems that much memory r wasting.

user2674668 Over a year ago

Im getting str is (null) image with black color the name is image with black color the name is image with white color descript is ( image with black color the name is image with black color the name is image with white color "", "", "", "", "", "", "", "", "",

Bhavesh Nayi Over a year ago

@user2674668 make str alloc init.,,

Jamal Zafar · Accepted Answer · 2013-09-03 08:29:18Z

0

It's because of the For Loop. You just need to pull out the value rather calling a For loop here, like:

txt.text = [descript_array objectAtIndex:i];

All you need is to differentiate the Button Action call i.e:- Which button was pressed and which element to extract from the Array. So to differentiate between calls, all you need is to set a Tag to image upon which Gesture is implemented. The tag will help you to differentiate the gesture call, like:

 [mmageView setTag: 10]; //Let say 10

And in the Gesture delegate method:

- (void)singleTap:(UIGestureRecognizer *)sender {

       if (sender.tag == 10) 
       {
             UITextView * yourTextView=[[[UITextView alloc]initWithFrame:CGRectMake(50, 50, 150,150)] autorelease];

             yourTextView.text = [descript_array objectAtIndex:10];  //give appropriate index to extract value

       }
            [self.view addSubview:txt];

}//End of method

edited Sep 3, 2013 at 8:29

answered Sep 3, 2013 at 7:14

Jamal Zafar

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7 Comments

Jamal Zafar Over a year ago

@user2674668: basically you have used loop to displays all the values. And ofcourse, in a For Loop every value will be displayed! If you need to display just one value then you need to extract value like i have answered!

Jamal Zafar Over a year ago

@user2674668: You said " I have button to click index. If i click first button i need to display first text. Then next for next button. If i click every button, it displays all the values." .. Can you edit your question and put that IBActions inside your code so that i can guide you further?

Jamal Zafar Over a year ago

@user2674668: yup i have seen. You need to Put the Button click (IBAction) code. I mean how are you performing button action? write that code

user2674668 Over a year ago

If i use txt.text = [descript_array objectAtIndex:i]; textview display only last value from array..

Jamal Zafar Over a year ago

@user2674668: How many buttons you have on screen? can u post a sample image of what are you trying to achieve? Because still i am not clear why are you using Gestures instead of implementing simple IBActions for button click?

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