Android Question Build ArrayList in B4A for using in Lib

Ferdari · Mar 2, 2020

Hi everyone, i want to write this Java ArrayList on B4A:

Java:

    protected Pack(Parcel in) {
        identifier = in.readString();
        name = in.readString();
        publisher = in.readString();
        trayImageFile = in.readString();
        publisherEmail = in.readString();
        publisherWebsite = in.readString();
        privacyPolicyWebsite = in.readString();
        licenseAgreementWebsite = in.readString();
        iosAppStoreLink = in.readString();
        stickers = in.createTypedArrayList(Sticker.CREATOR); //this is also and arraylist
        totalSize = in.readLong();
        androidPlayStoreLink = in.readString();
        isWhitelisted = in.readByte() != 0;
    }

What is the best way to write this on B4A?

content.Initialize("", ArrayList)

Im creating an array:

B4X:

'Array As String("identifier","name","publisher,"trayImageFile","publisherEmail","publisherWebsite","privacyPolicyWebsite","licenseAgreementWebsite","iosAppStoreLink","stickers()","totalSize","androidPlayStoreLink","isWhitelisted")
Array As String("12","App","tray","","","","","","","",stickers,"","")

Erel · Mar 2, 2020

Array As String will create an array of strings (String[]). If you want an ArrayList:

B4X:

Dim list1 As List = Array As String("a", "b")
'now pass list1

Ferdari · Mar 3, 2020

Erel said:
Array As String will create an array of strings (String[]). If you want an ArrayList:

B4X:

Dim list1 As List = Array As String("a", "b") 'now pass list1

Thanks, it works, but not the lib im developing ?

asales · Mar 3, 2020

Ferdari said:
Thanks, it works, but not the lib im developing ?

Maybe a Map instead an array:

B4X:

    Private Pack As Map
    Pack.Initialize
    Pack.Put("identifier", "<identifier1>")
    Pack.Put("name", "<name>1")

    Dim list1 As List = Array As String("stickers1", "stickers2", "stickers3")
    Pack.Put("stickers", list1)

    Pack.Put("totalSize", 1000)
    
    Log(Pack.Get("identifier"))   '<identifier1>
    Log(Pack.Get("name"))    '<name>1
    Log(Pack.Get("stickers"))   '[stickers1, stickers2, stickers3]
    Log(Pack.Get("totalSize"))   '1000

Ferdari · Mar 4, 2020

asales said:

Maybe a Map instead an array:

B4X:

    Private Pack As Map
    Pack.Initialize
    Pack.Put("identifier", "<identifier1>")
    Pack.Put("name", "<name>1")

    Dim list1 As List = Array As String("stickers1", "stickers2", "stickers3")
    Pack.Put("stickers", list1)

    Pack.Put("totalSize", 1000)
  
    Log(Pack.Get("identifier"))   '<identifier1>
    Log(Pack.Get("name"))    '<name>1
    Log(Pack.Get("stickers"))   '[stickers1, stickers2, stickers3]
    Log(Pack.Get("totalSize"))   '1000

I tried, but the app can´t compile with MAP: $MyMap cant be converted to ArrayList, i need more research

asales · Mar 4, 2020

Ferdari said:
I tried, but the app can´t compile with MAP: $MyMap cant be converted to ArrayList, i need more research

Maybe this;

add new object to array?

hi when i create an array of objects i have to set the length of the array at the beginning but what if i would like to add a new object to this array? is it possible? in java it is: var fruits = ["Banana", "Orange", "Apple", "Mango"]; fruits[4] = "Lemon";

www.b4x.com

?
@Erel says: "B4A List wraps the Java ArrayList. They are the same thing."

Ferdari · Mar 4, 2020

asales said:
Maybe this;

add new object to array?

hi when i create an array of objects i have to set the length of the array at the beginning but what if i would like to add a new object to this array? is it possible? in java it is: var fruits = ["Banana", "Orange", "Apple", "Mango"]; fruits[4] = "Lemon";

www.b4x.com

?
@Erel says: "B4A List wraps the Java ArrayList. They are the same thing."

Im using Lists intead of Map, it works, but need to fix the lib, because it are not adding the StickerPack. ill report back.

Android Question Build ArrayList in B4A for using in Lib

Ferdari

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Erel

B4X founder

Ferdari

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asales

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Ferdari

Active Member

asales

Expert

add new object to array?

Ferdari

Active Member

add new object to array?

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