Android TextView to add text through loop

Question

I am having trouble in displaying the values in text view. It displays only the last value in text view. I want to iterate each and every value in new line.

Here is my code.

PreviewCatNameTxt = new TextView[obdatin.catCount];
        PreviewNameTxt = new TextView[10];
        PreviewQtyTxt = new TextView[10];
        PreviewAmtTxt = new TextView[10];
        System.out.println("setview3");
        for(int i=0;i<obdatin.catCount;i++){ 
            System.out.println("num oof prca"+obdatin.catList[i].getNumCategory());
            if(obdatin.catList[i].isTotQtyNonZero(0)){
                PreviewCatNameTxt[i] = (TextView) findViewById(R.id.textViewh);

                PreviewCatNameTxt[i].setText(obdatin.catList[i].getCategoryName(0));
                System.out.println("prca"+obdatin.catList[i].getCategoryName(0));
            }
            int cnt =obdatin.catList[i].proList.getNumProduct();
        System.out.println("setview3");

        for(int j = 0; j<cnt; j++) {

            if(obdatin.catList[i].proList.isQtyNonZero(j)){

                PreviewNameTxt[j] = (TextView)findViewById(R.id.textView1);
                PreviewNameTxt[j].setText(obdatin.catList[i].proList.getProductName(j));

                PreviewQtyTxt[j] = (TextView)findViewById(R.id.textView2);

                PreviewQtyTxt[j].setText(obdatin.catList[i].proList.getProductQty(j));

                PreviewAmtTxt[j] = (TextView)findViewById(R.id.textView3);
                String amt = obdatin.catList[i].proList.getProductAmt(j);
                PreviewAmtTxt[j].setText(amt);
                System.out.println("prcaN"+obdatin.catList[i].proList.getProductName(j));
                System.out.println("prcaQ"+obdatin.catList[i].proList.getProductQty(j));
                System.out.println("prcaA"+obdatin.catList[i].proList.getProductAmt(j));
             }

        }

Please see my answer. I think your problem will be solved. If you any further query then please ask me. — Satyaki Mukherjee
– Satyaki Mukherjee, Commented Jan 8, 2014 at 6:35

Satyaki Mukherjee · Accepted Answer · 2014-01-08 07:54:26Z

3

Edited Code as per your requirement

PreviewCatNameTxt = (TextView) findViewById(R.id.textViewh);


for(int i=0;i<obdatin.catCount;i++){ 
            System.out.println("num oof prca"+obdatin.catList[i].getNumCategory());
            if(obdatin.catList[i].isTotQtyNonZero(0)){


                PreviewCatNameTxt.append(" "+obdatin.catList[i].getCategoryName(0));
                System.out.println("prca"+obdatin.catList[i].getCategoryName(0));
            }
            int cnt =obdatin.catList[i].proList.getNumProduct();
        System.out.println("setview3");

        for(int j = 0; j<cnt; j++) {

            if(obdatin.catList[i].proList.isQtyNonZero(j)){


                   PreviewCatNameTxt.append("\n"+obdatin.catList[i].proList.getProductName(j));

                PreviewCatNameTxt.append("\n"obdatin.catList[i].proList.getProductQty(j));

                String amt = obdatin.catList[i].proList.getProductAmt(j);
                PreviewCatNameTxt.append("\n"+amt+"\n\n");
                System.out.println("prcaN"+obdatin.catList[i].proList.getProductName(j));
                System.out.println("prcaQ"+obdatin.catList[i].proList.getProductQty(j));
                System.out.println("prcaA"+obdatin.catList[i].proList.getProductAmt(j));
             }

Please remove TextView array and all those things. Please reply your feedback.

edited Jan 8, 2014 at 7:54

answered Jan 8, 2014 at 6:34

Satyaki Mukherjee

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10 Comments

Abdul Naseer Over a year ago

here textview is an array how can i declare outside of the loop

Satyaki Mukherjee Over a year ago

Ok so declare it inside but avoid setText and do append. I will edit my answer as per your need

Satyaki Mukherjee Over a year ago

but if you declare inside then it will every time create new textview so, previous id data will be missed ? can you try using my code? is my code workable?

Abdul Naseer Over a year ago

i want to show the output as in firstline heading next line n number of rows again heading and next line n number of rows actually i used table layout by help of inflater to achive this but i got failed in that one..so i used to choose this way can you suggest me some idea

Abdul Naseer Over a year ago

great bro..i used tablelayout

|

Community · Accepted Answer · 2017-05-23 12:33:29Z

1

I am not entirely sure what you are trying to do.Why do you use System.out.println?

If I got it right you want a larger text to be put in TextView separated by newlines after each loop of the for. One way to do it is to have a String which you fill with every iteration, also adding a newline after each iteration and after the for setting the text.

So, you could have something like this:

String catList="";
for(int i=0;i<obdatin.catCount;i++){
        if(obdatin.catList[i].isTotQtyNonZero(0)){
        catList = catList + obdatin.catList[i].getCategoryName(0) + "\n";
        }
int cnt =obdatin.catList[i].proList.getNumProduct();

PreviewCatNameTxt[i] = (TextView) findViewById(R.id.textViewh);
PreviewCatNameTxt[i].setText(catList);

Also, if you want to log something you should od to use LogCat. You can read about Reading and Writing in LogCat here and here. Good luck!

edited May 23, 2017 at 12:33

CommunityBot

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answered Jan 8, 2014 at 6:21

Turbut Alin

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1 Comment

Abdul Naseer Over a year ago

i want to show the output as in firstline heading next line n number of rows again heading and next line n number of rows actually i used table layout to achive this but i got failed in that one..so i used to choose this way can you suggest me some idea

learner · Accepted Answer · 2014-01-08 06:41:22Z

1

PreviewNameTxt[j] = (TextView)findViewById(R.id.textView1);
PreviewQtyTxt[j] = (TextView)findViewById(R.id.textView2);
PreviewAmtTxt[j] = (TextView)findViewById(R.id.textView3);
String cat="",obtaincat="",amt="";

for(int j = 0; j<cnt; j++) {

            if(obdatin.catList[i].proList.isQtyNonZero(j)){

                cat = cat + obdatin.catList[i].getCategoryName(j) + "\n";
                obtaincat=btaincat+obdatin.catList[i].proList.getProductQty(j)+"\n";
               amt =amt+ obdatin.catList[i].proList.getProductAmt(j)+"\n";
             }
}
PreviewNameTxt[j].setText(cat);
PreviewQtyTxt[j].setText(obtaincat);
PreviewAmtTxt[j].setText(amt);

answered Jan 8, 2014 at 6:41

learner

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1 Comment

learner Over a year ago

don't use System.out.println();,for cheking output use toast

Nguyen Thanh An · Accepted Answer · 2014-01-08 06:24:01Z

-1

Change to Logcat :

Log.w("","prcaN"+obdatin.catList[i].proList.getProductName(j));
Log.w("","prcaQ"+obdatin.catList[i].proList.getProductQty(j));
Log.w("","prcaA"+obdatin.catList[i].proList.getProductAmt(j));

answered Jan 8, 2014 at 6:24

Nguyen Thanh An

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