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Question by PruneDealer · Oct 12, 2019 at 07:21 AM · c#androidandroid buildsavebinary

Binary Save on android issues

Had a few problems with this for a while and and thought I'd make a new thread just because I'm closer to the root cause. It seems to be a common problem as well. So I have a script to save data in my game by converting to binary, but it doesn't work on android builds. @Bunny83 (thanks!) showed me how to use Path.Combine but it still doesn't seem to be working. I might just be doing it wrong.

Sorry for the hassle, thanks in advance and have a great day!

Edit: I also tried Using() in front of FileStream but that didn't work either. Geez I'm a mess.

 using UnityEngine;
 using System.IO;
 using System.Runtime.Serialization.Formatters.Binary;
 using System.Runtime.Serialization;
 
 public class UpgradeSave
 {
     public Upgrade _levels;
 
     public UpgradeSave()
     {
         _levels = new Upgrade();
         _levels.myUpgrades = new UpgradeData();
         LoadUpgrade();
     }
     public void SaveUpgrade()
     {
         string path = Path.Combine(Application.persistentDataPath, "player.dat");
         FileStream file = new FileStream(path, FileMode.OpenOrCreate);
             try
             {
                 BinaryFormatter formatter = new BinaryFormatter();
                 formatter.Serialize(file, _levels.myUpgrades);
             }
             catch (SerializationException e)
             {
                 Debug.LogError("There was an issue serilizing this data: " + e.Message);
             }
             finally
             {
                 file.Close();
             }
     }
 
     public void LoadUpgrade()
     {
         string path = Path.Combine(Application.persistentDataPath, "player.dat");
         FileStream file = new FileStream(path, FileMode.Open);
             try
             {
                 BinaryFormatter formatter = new BinaryFormatter();
                 _levels.myUpgrades = (UpgradeData)formatter.Deserialize(file);
             }
             catch (SerializationException e)
             {
                 Debug.LogError("There was an issue serilizing this data: " + e.Message);
             }
             finally
             {
                 file.Close();
             }
     }
 }
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avatar image WarmedxMints · Oct 12, 2019 at 12:50 PM 0
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What doesn't work and what is the myUpgrades class?

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Answer by misher · Oct 12, 2019 at 01:56 PM

to save a file:

 BinaryFormatter bf = new BinaryFormatter();
 FileStream file = File.Open(Application.persistentDataPath + "/player.dat", FileMode.OpenOrCreate);
 bf.Serialize(file, _levels.myUpgrades);
 file.Close();

Make sure you added a permission to write to storage, for android it is in manifest.xml

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avatar image PruneDealer · Oct 12, 2019 at 05:01 PM 0
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The code you posted was the code I originally had before changing it to Path.Combine. Do you think the issue is that I haven't used manifest.xml?

avatar image misher PruneDealer · Oct 14, 2019 at 06:41 AM 0
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Try to use logcat, do debug on android device.

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