Android Question Basic4Android Memory Ops

[LiK137]

Dear developers,

My question is regarding memory operations that is not possible with Basic4Android.

I am using version 2.70b1 and wandering How it is possible to read big datafile, make decryption, calculations, encryption and saving/writing back.

Reading/receiving data from internet/intranet, process without writing to file, sending back.



Please give me ways to realize that and ways to convert VisualBasic program that uses memory operations to Basic4Android.

 

[Erel]

You can use InputStream.InitializeToBytesArray to create a memory stream. You can then work with it instead of working with a file.

 

[LiK137]

So how much will be the maximum bytes could be stored in streams?

 

[Erel]

It depends on the process available memory. I recommend you to use a file if you need to store more than a few megabytes.

 

[LiK137]

Thank U Erel,
All systems have limitations. Like FileSystem/FileSize, IntegerNumbers/Min-MaxValues and Basic4Android/MemoryAllocateFunction.
lets take as an example file EN/DEcryption. if we decrypt file partially then the result decrypted file will be different as it was encrypted wholly like read n bytes, decrypt and then read another portion is not helps or disk read/write operations not allowed. How then should I continue. I need to:
- Allocate memory
- ReadBytes to Memor
- Manipulate Data
- ReAllocate Memory
- FreeMemory

How these could be done bypass memory?

 

[Erel]

Android apps run inside Dalvik Virtual Machine. This virtual machine includes a powerful garbage collector. Memory will be released automatically when there are no references left to an object.

Here is an example of code that loads a file to memory: http://www.b4x.com/android/forum/th...-dirassets-solution-wanted.26777/#post-154939

 

[LiK137]

thanx 4 Help, Lets try