How to add a comma at the end of every element in ArrayList On Android

Question

In my application I want use this Library for show ArrayList items.
My ArrayList from server:

"genres": [
      "Action",
      " Comedy",
      " Family"
    ]

I write below code for show Items:

private String[] mostlyMatchedKeywordsStrings = serialResponse.getData().getGenres();
private List<String> cloudChipList = new ArrayList<>();

for (String str : mostlyMatchedKeywordsStrings) {
    cloudChipList.add(str);

    if (cloudChipList.size() > 0) {
       infoSerialFrag_GenreChips.addChip(str);
    }
}

Gives oputput as:

Ganre : Action Comedy Family

But I want it like this :

Ganre : Action , Comedy , Family

Please help me with my above codes, I am amateur and need this help, please help me with my above codes. Thanks all <3

Suggestion don't save ',' in array list instead get the genre and append ',' at the end. Also put check whether the element is last to prevent last ',' to be printed — Shubham AgaRwal
– Shubham AgaRwal, Commented Aug 5, 2017 at 5:45

Shruti · Accepted Answer · 2017-08-05 06:44:11Z

3

Can you try this using for loop like this:

EDITED :

private String[] mostlyMatchedKeywordsStrings;
    private List<String> cloudChipList = new ArrayList<>();

    mostlyMatchedKeywordsStrings = serialResponse.getData().getGenres();

    for (String str : mostlyMatchedKeywordsStrings) {
        cloudChipList.add(str);
    }
    if (cloudChipList.size() > 0) {
        for (int i = 0; i < cloudChipList.size(); i++) {

            if (i == (cloudChipList.size() - 1)) //true only for last element
                infoSerialFrag_GenreChips.add(cloudChipList.get(i));

            else
                infoSerialFrag_GenreChips.add(cloudChipList.get(i) + ","); //this will execute for 1st to 2nd last element
        }
    }

edited Aug 5, 2017 at 6:44

answered Aug 5, 2017 at 6:10

Shruti

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4 Comments

Jong Over a year ago

can you edit your code with my above codes? please send to me full code with my above codes. please I really need your help

Shruti Over a year ago

In which arraylist you want that colon separated strings? In cloudChipList or in infoSerialFrag_GenreChips?

Jong Over a year ago

infoSerialFrag_GenreChips, please help me my friend. I am amateur and really need your helps. please

Shruti Over a year ago

Jong, your requirements are not clear so not getting exactly what you want. Hope my edited answer helps you.

Bob · Accepted Answer · 2017-08-05 05:46:54Z

2

Use TextUtils.join(",", yourList);

answered Aug 5, 2017 at 5:46

Bob

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1 Comment

Jong Over a year ago

can you edit your code and send to me full code? please my friend

IntelliJ Amiya · Accepted Answer · 2017-08-05 07:00:00Z

0

The java.util.ArrayList.add(int index, E elemen) method inserts the specified element E at the specified position in this list.It shifts the element currently at that position (if any) and any subsequent elements to the right (will add one to their indices).

Edited

 if (cloudChipList.size() > 0) 
 {
        if(cloudChipList.get(cloudChipList.size()-1).contains(","))
        {
            infoSerialFrag_GenreChips.add(str);
        }
        else
        {
            infoSerialFrag_GenreChips.add(str+",");
        } 
 }

OP will be

Ganre : Action , Comedy , Family

edited Aug 5, 2017 at 7:00

answered Aug 5, 2017 at 5:47

IntelliJ Amiya

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7 Comments

Jong Over a year ago

if use this, show me this : Ganre : Action , Comedy , Family , !!!! I don't want show , to lasted of list

IntelliJ Amiya Over a year ago

@Jong get last value infoSerialFrag_GenreChips.get(infoSerialFrag_GenreChips.size()-1); Then remove (String remove) ,

Jong Over a year ago

where add your code? can you edit your answer and send to me full code with my above codes ? please man, I really need your help. please

IntelliJ Amiya Over a year ago

@Jong stackoverflow.com/questions/6096845/…

Jong Over a year ago

I showing this in my request response! I edit my code with your help, but show me such as this : Action , Comedy , Family , . I want Remove lasted , and show me like this : Action , Comedy , Family. how can edit my code? please help me my friend

|

saw303 · Accepted Answer · 2017-08-05 14:01:09Z

0

Do it the old Java 6 way and add the comma yourself unless its the last element in the list.

See the following example:

private String[] mostlyMatchedKeywordsStrings = serialResponse.getData().getGenres();
private List<String> cloudChipList = new ArrayList<>();

for (int i = 0; i < mostlyMatchedKeywordsStrings.length; i++) {

    String str = mostlyMatchedKeywordsStrings[i];

    if (i + 1 < mostlyMatchedKeywordsStrings.length) str = str + ", ";

    cloudChipList.add(str);

    if (cloudChipList.size() > 0) {
       infoSerialFrag_GenreChips.addChip(str);
    }
}

edited Aug 5, 2017 at 14:01

saw303

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answered Aug 5, 2017 at 5:46

Snehal Gongle

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1 Comment

Jong Over a year ago

if use this, show me this : Ganre : Action , Comedy , Family , !!!! I don't want show , to lasted of list

Memin · Accepted Answer · 2018-06-13 10:04:57Z

0

Although it is late, just case if someone else comes to this thread... If you are using Java 8, you can use streaming and Collectors interfaces like the following:

List<String> cloudChipList = new ArrayList<String>();
    cloudChipList.add("Action");
    cloudChipList.add("Comedy");
    cloudChipList.add("Family");

    String result = cloudChipList.stream().collect(Collectors.joining(" , ", "Genre: ", "\n"));
    System.out.println(result);

Here Collectors.joining adds delimiter, prefix and suffix to the result, but it has an option with only the delimter, too.

answered Jun 13, 2018 at 10:04

Memin

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