# No serial library Processing for smartphone. Help

**URL:** <https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870>\
**Category:** Processing for Android\
**Created:** [May 5, 2021, 9:34am UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870 "2021-05-05T09:34:04Z")\
**Posts on this page:** 20\
**Page:** 9

<div class="post-metadata">

**Author:** ![paulgoux](https://avatars.discourse-cdn.com/v4/letter/p/b9bd4f/32.png) [@paulgoux](https://discourse.processing.org/u/paulgoux)\
**Post date:** [May 13, 2021, 12:45am UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/161 "2021-05-13T00:45:56Z")

</div>

Whilst its potentially not possible in android you can download turbo editor on the app store and this will allow you to create your desired file.

 ![Screenshot_20210513_014335_com.android.vending](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/c/c4969dc03e0e58fe5cfe8581859f3eaebbf31b1a.jpeg)

 ![Screenshot_20210513_014324_com.maskyn.fileeditor](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/0/0658b518011816edc61e950ca91b636484799c56.jpeg)

As you can see you can set the name and folder of the file.

 ![Screenshot_20210513_014619_com.maskyn.fileeditor](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/2/243853e8b35cf6c8b92e096654ae222862f1e39c.jpeg)

 ![Screenshot_20210513_014623_com.maskyn.fileeditor](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/6/654b144c8250c5e0ed02181fbc2f1b1371325375.jpeg)

---

<div class="post-metadata">

**Author:** ![paulgoux](https://avatars.discourse-cdn.com/v4/letter/p/b9bd4f/32.png) [@paulgoux](https://discourse.processing.org/u/paulgoux)\
**Post date:** [May 13, 2021, 12:57am UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/162 "2021-05-13T00:57:46Z")

</div>

furthermore here is a sketch I posted a few days back which allows you to do exactly this.

you should be able to use the first sketch posted.

> [@Read and write images and text files Android](https://discourse.processing.org/t/read-and-write-images-and-text-files-android/29947):
>
> text saver. Save text to any location in android. Please set the manifest permissions by adding the following file to your sketch folder. AndroidManifest.xml \<?xml version="1.0" encoding="UTF-8"?\> \<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package=""\> \<uses-sdk android:minSdkVersion="17" android:targetSdkVersion="28"/\> \<application android:icon="@mipmap/ic\_launcher" android:label=""\> \<activity android:n…

just set the following line in setup

my full updated code in case that last link is problematic.

> **Summary**
>
> ```auto
> import java.io.BufferedReader;
> import java.io.BufferedWriter;
> import java.io.File;
> import java.io.FileInputStream;
> import java.io.FileNotFoundException;
> import java.io.FileOutputStream;
> import java.io.FileReader;
> import java.io.FileWriter;
> import java.io.IOException;
> import java.io.InputStream;
> import java.io.InputStreamReader;
> import java.io.OutputStreamWriter;
> import java.io.PrintWriter;
> 
> import android.app.Activity;
> import android.content.Context;
> import android.os.Environment;
> import android.content.DialogInterface;
> import android.graphics.Color;
> import android.widget.TextView;
> import android.view.Gravity;
> import processing.core.PApplet;
> import android.app.Activity;
> import android.app.AlertDialog;
> 
> fileOutput f;
> 
> String s2 = "oifoifnowibf";
> void settings() {
> size(600, 600, P2D);
> };
> 
> public void setup() {
> 
> f = new fileOutput(this);
> f.setLocation("notes/test.txt");
> f.setAndroidDialogue("No","Yessss");
> };
> 
> public void draw() {
> background(255);
> if (f.fileContent!=null) {
> fill(0);
> text(f.counter, 20, 10);
> text(f.fileContent, 20, 20);
> } else {
> fill(0);
> text("no file", 20, 20);
> }
> };
> 
> void mousePressed() {
> if (f.writeFile) {
> f.writeLn(s2+hour()+":"+minute()+":"+second());
> f.close();
> f.loadStrings();
> }
> if(!f.writeFile)f.dialogBox();
> };
> 
> ```

> **Summary**
>
> class fileOutput {  
> public PApplet applet;  
> public FileWriter output;  
> float x, y, w, h;  
> public boolean save, onMouseUp, mdown, debug, append = true, appendFile, match,  
> append2, overWrite = true, overWriteOnce = true, writeOnce, writeFile, click,  
> getPermission = true, fileExists, reWrite;  
> public int counter=-1, counter2;  
> public File file, file2, file3;  
> public File SDcards ;  
> public String location, filePath, folderPath = “”;  
> String text = “oioijsofoivnsoindv”, absolutePath, ext, fileName, fileContent = “”;  
> String androidDialogueTitle = “Would you like to overWrite”,  
> dialogueB1Title = “”,dialogueB2Title = “”,dialogueBody;  
> Permission p;  
> Activity activity;  
> Context context;  
> TextView msg;  
> int msgId;
> 
> fileOutput() {  
> };
> 
> fileOutput(boolean a, PApplet applet) {
> 
> ```
> this.applet = applet;
> p = new Permission(applet, "WRITE_EXTERNAL_STORAGE");
> overWrite = true;
> appendFile = true;
> 
> ```
> 
> };
> 
> fileOutput(PApplet app) {  
> applet = app;  
> p = new Permission(applet, “WRITE\_EXTERNAL\_STORAGE”);  
> //init();  
> };  
> //currently unused  
> fileOutput(String location, PApplet applet) {
> 
> ```
> this.applet = applet;
> p = new Permission(applet, "WRITE_EXTERNAL_STORAGE");
> setLocation(location);
> init();
> 
> ```
> 
> };
> 
> fileOutput(PApplet applet, String location) {
> 
> ```
> this.applet = applet;
> p = new Permission(applet, "WRITE_EXTERNAL_STORAGE");
> setLocation(location);
> init();
> 
> ```
> 
> };
> 
> void getAndroidInfo() {  
> activity = applet.getActivity();  
> context = activity.getApplicationContext();  
> absolutePath = new String(Environment.getExternalStorageDirectory().getAbsolutePath());  
> };
> 
> void init() {  
> x = 0;  
> y = 0;  
> w = applet.width;  
> h = applet.height;
> 
> ```
> String s1 = "Would you like to overWrite "+fileName+"."+ext+"?";
> float dboxWidth = 120;
> float tSize = 20;
> applet.textSize(tSize);
> float dw = applet.textWidth(s1)+100;
> float dboxHeight = 150;
> float dx = applet.width/2-dw/2;
> float dy = applet.height/2-50/2;
> 
> ```
> 
> };
> 
> void loadStrings() {  
> loadFile(context);  
> };
> 
> String loadFile(Context context) {
> 
> ```
> FileInputStream fis = null;
> if (writeFile) {
> try {
> if (!reWrite)fis = new FileInputStream (new File(file2.getAbsolutePath()));
> else fis = new FileInputStream (new File(file3.getAbsolutePath()));
>     
> InputStreamReader isr = new InputStreamReader(fis);
> // READ STRING OF UNKNOWN LENGTH
> StringBuilder sb = new StringBuilder();
> char[] inputBuffer = new char[2048];
> int l;
> // FILL BUFFER WITH DATA
> while ((l = isr.read(inputBuffer)) != -1) {
> sb.append(inputBuffer, 0, l);
> println("write data", inputBuffer, 0, l);
> }
> // CONVERT BYTES TO STRING
> fileContent = sb.toString();
> 
> fis.close();
> }
> catch (Exception e) {
> println("cannot fetch file", e);
> } 
> finally {
> if (fis != null) {
> 
> fis = null;
> }
> }
> }
> return fileContent;
> 
> ```
> 
> };
> 
> void open() {  
> };
> 
> void close() {  
> try {  
> output.flush();  
> output.close();  
> }  
> catch(IOException e) {  
> }  
> };
> 
> void write(String s) {
> 
> ```
> if (!overWrite)checkLocation();
> try {
> 
> output = new FileWriter(file2, append);
> }
> catch(IOException e) {
> }
> printWrite(s);
> 
> ```
> 
> };
> 
> void writeLn(String s) {  
> if (!overWrite)checkLocation();  
> try {  
> output = new FileWriter(file2, append);  
> }  
> catch(IOException e) {  
> }  
> printWriteLn(s);  
> };
> 
> void write(String s) {  
> if (!overWrite)checkLocation();  
> try {  
> output = new FileWriter(file2, append);  
> }  
> catch(IOException e) {  
> }  
> printWrite(s);  
> };
> 
> void writeLn(String s) {  
> if (!overWrite)checkLocation();  
> try {  
> output = new FileWriter(file2, append);  
> }  
> catch(IOException e) {  
> }  
> printWriteLn(s);  
> };
> 
> void printWrite(String s) {  
> if (!overWrite)checkLocation();  
> try {  
> output.append(s);  
> }  
> catch(IOException e) {  
> }  
> };
> 
> void printWriteLn(String s) {  
> if (!overWrite)checkLocation();  
> try {  
> output.append(s);  
> output.append(“\n”);  
> }  
> catch(IOException e) {  
> }  
> };
> 
> void printWrite(String s) {  
> if (!overWrite)checkLocation();  
> try {  
> for (int i=0; i\<s.length; i++) {  
> output.append(s[i]);  
> }  
> }  
> catch(IOException e) {  
> }  
> };
> 
> void printWriteLn(String s) {  
> if (!overWrite)checkLocation();  
> try {  
> for (int i=0; i\<s.length; i++) {  
> output.append(s[i]);  
> output.append(“\n”);  
> }  
> }  
> catch(IOException e) {  
> }  
> };
> 
> void checkLocation() {  
> boolean k = false;  
> String s1 = “Would you like to overWrite “+fileName+counter+”.”+ext+“?”;  
> try {  
> //  
> file = new File(absolutePath, folderPath);  
> if (!file.exists()&&counter==-1) {  
> file.mkdirs();  
> file2 = new File(file, “/”+fileName+“.”+ext);  
> androidDialogueTitle = file.getAbsolutePath();  
> PApplet.println(“checking file1”, file2);  
> if (file2.exists()) {  
> counter ++;
> 
> ```
> PApplet.println("File Exists");
> //dbox.main.title.label = s1;
> }
> } else if (counter==-1) {
> fileExists = true;
> counter = 0;
> k = true;
> } else k = true;
> if (overWrite&&writeOnce) {
> k=false;
> } else if (overWrite&&!writeOnce&&writeFile) {
> writeOnce = true;
> k = true;
> }
> boolean k1 = false;
> if (writeFile)
> while (k&&counter<100&&!k1) {
> s1 = fileName+counter+"."+ext+"?";
> try { 
> 
> file2 = new File(absolutePath+"/"+folderPath+"/"+fileName+counter+"."+ext);
> file3 = new File(absolutePath+"/"+folderPath+"/"+fileName+(counter)+"."+ext);
> androidDialogueTitle = file3.getAbsolutePath();
> if (file2.exists()) { 
> counter++;
> } else {
> PApplet.println("checking file2", file2);
> //output = new FileWriter(file2, append);
> k = false;
> k1 = true;
> break;
> }
> } 
> catch (Exception e) { 
> PApplet.println("Error while saving file: " + e);
> }
> }
> if (k1||!writeFile) {
> //PApplet.println("file",file);
> //PApplet.println("Fname",folderName);
> //PApplet.println("fileName",fileName);
> //PApplet.println("counter",counter);
> //PApplet.println("ext",ext);
> if (file2==null&&counter<0)file2 = new File(file+"/"+fileName+"."+ext); 
> else if (file2==null)file2 = new File(file+"/"+fileName+"."+ext); 
> if (output==null) {
> //img.save(file+"/"+fileName+counter+"."+ext);
> 
> if (writeFile)output = new FileWriter(file2, append);
> PApplet.println("File saved successfully.");
> //use write or append
> }
> }
> if (reWrite) {
> file2 = new File(file+"/"+fileName+counter+"."+ext); 
> output = new FileWriter(file2, append);
> }
> println("write file", folderPath, fileName, counter, ext);
> if (reWrite)overWrite = true;
> } 
> catch (IOException e) {
> e.printStackTrace();
> }
> 
> ```
> 
> };
> 
> void listen() {  
> //if(writeFile&&dbox.main.getButton(0).click)checkLocation();  
> };
> 
> void setLocation(String s) {  
> if (getPermission)getAndroidInfo();  
> location = s;  
> folderPath = s.substring(0, s.lastIndexOf(“/”));  
> fileName = s.replace(folderPath+“/”, “”);  
> getExt(fileName);  
> PApplet.println(“Fname”, folderPath);  
> PApplet.println(“fileName”, fileName);  
> PApplet.println(“counter”, counter);  
> PApplet.println(“ext”, ext);  
> checkLocation();  
> init();  
> }
> 
> void getExt(String location) {
> 
> ```
> int count = 0;
> fileName = location.substring(0, location.indexOf("."));
> ext = location.replace(fileName, "");
> ext = ext.replace(".", "");
> ext = ext.replace(fileName, "");
> 
> ```
> 
> };
> 
> void dialogBox() {
> 
> ```
> msg = new TextView(activity); 
> msg.setBackgroundColor(Color.BLUE);
> msg.setTextSize(32);
> msg.setText(dialogueBody); 
> msg.setGravity(Gravity.CENTER_HORIZONTAL); 
> msg.setTextColor(Color.WHITE); 
> 
> activity.runOnUiThread(new Runnable() {
> public void run() {
> AlertDialog.Builder builder = new AlertDialog.Builder(activity);
> builder.setView(msg);
>     
> androidDialogueTitle += " "+fileName+"."+ext+"?";
> builder.setTitle(androidDialogueTitle);
> builder.setPositiveButton(dialogueB1Title, 
> new DialogInterface.OnClickListener() {
> public void onClick(DialogInterface dialog, 
> int which) {
> writeFile = true;
> overWrite = false;
> reWrite = true;
>           
> }
> }
> );
> builder.setNegativeButton(dialogueB2Title, 
> new DialogInterface.OnClickListener() {
> public void onClick(DialogInterface dialog, 
> int which) {
> writeFile = true;
> overWrite = true;
> //act.finish();
> }
> }
> )
> .show();
> }
> }
> );
> 
> ```
> 
> };
> 
> void setAndroidDialogue(String s1,String s2){  
> dialogueB1Title = s1;  
> dialogueB2Title = s2;
> 
> };
> 
> void setAndroidDialogue(String s1,String s2,String s3){  
> androidDialogueTitle = s1;  
> dialogueB1Title = s2;  
> dialogueB2Title = s3;
> 
> };
> 
> void setAndroidDialogueTitle(String s1){  
> androidDialogueTitle = s1;  
> };
> 
> void setDialogueColor(){
> 
> };
> 
> public boolean click() {  
> boolean k = false;  
> if (pos()&&applet.mousePressed&&!click) {  
> click = true;  
> k = false;  
> } else if (click&&!applet.mousePressed) {  
> k = true;  
> click = false;  
> }  
> return k;  
> };
> 
> public boolean pos(PVector mouse) {  
> return mouse.x\>x&&mouse.x\<x+w&&mouse.y\>y&&mouse.y\<y+h;  
> };
> 
> public boolean pos() {  
> return applet.mouseX\>x&&applet.mouseX\<x+w&&applet.mouseY\>y&&applet.mouseY\<y+h;  
> };  
> };

Permissions

> **Summary**
>
> ```auto
> public class Permission{
>   
> PApplet parent;
> String p;
> 
> public Permission(PApplet pParent,String permissionName) {
> p = permissionName;
> parent = pParent;
> parent.requestPermission("android.permission."+permissionName, "onPermissionResult", this);
> println(permissionName);
> };
> 
> public void onPermissionResult(boolean granted) {
> if (!granted) {
> PApplet.println("User did not grant",p," permission.",p,"is disabled.");
> }
> };
> 
> };
> 
> ```

```auto
f.setLocation("xml/test.xml");

```

 ![Screenshot_20210513_020001_com.mi.android.globalFileexplorer](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/d/ddf4b6f20eb3b5592fe88fffe4db264dcfd0ad0e.jpeg)

---

<div class="post-metadata">

**Author:** ![ZENAR57](https://avatars.discourse-cdn.com/v4/letter/z/a698b9/32.png) [@ZENAR57](https://discourse.processing.org/u/ZENAR57)\
**Post date:** [May 13, 2021, 7:33am UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/163 "2021-05-13T07:33:03Z")

</div>

> [@paulgoux](#):
>
> Whilst its potentially not possible

![20210513_101644](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/4/4fe56c6e355d2e5d25f01733bb47dfd695a2c82b.gif)  
my experience with the filesystem is above average. there is no problem anywhere to find, create, change, change the properties of a file or directories. I was doing system administration twenty years ago and now I use a powerful two-pane file manager that allows you to work with the system in the same way as in DOS and WINDOWS, and maybe even better.

 ![IMG_20210513_102742](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/c/c91d59e5d73edea28b88dffecca3f76eb1151b5b.jpeg)

 ![IMG_20210513_102924](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/f/f8816df9a479c783dbbce907031f0fadd606fb1a.jpeg)  
 ![IMG_20210513_103024](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/1/1096a89bffc9201eefbc865a019d02e19b636c29.jpeg)

[https://www.ghisler.com/efaqgeneral.htm](https://www.ghisler.com/efaqgeneral.htm)

---

<div class="post-metadata">

**Author:** ![paulgoux](https://avatars.discourse-cdn.com/v4/letter/p/b9bd4f/32.png) [@paulgoux](https://discourse.processing.org/u/paulgoux)\
**Post date:** [May 13, 2021, 7:36am UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/164 "2021-05-13T07:36:18Z")

</div>

So have you managed to create the required file?

---

<div class="post-metadata">

**Author:** ![ZENAR57](https://avatars.discourse-cdn.com/v4/letter/z/a698b9/32.png) [@ZENAR57](https://discourse.processing.org/u/ZENAR57)\
**Post date:** [May 13, 2021, 8:04am UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/165 "2021-05-13T08:04:48Z")

</div>

only up to today’s recommendations.  
I have not checked the current offers yet.  
at work, little free time.

if you make changes to the native manifest file in APDE 5.2, then whenever I run APDE5.2, it overwrites all my changes and restores the original file state.

---

<div class="post-metadata">

**Author:** ![ZENAR57](https://avatars.discourse-cdn.com/v4/letter/z/a698b9/32.png) [@ZENAR57](https://discourse.processing.org/u/ZENAR57)\
**Post date:** [May 13, 2021, 9:16am UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/166 "2021-05-13T09:16:22Z")

</div>

I will try to shoot a video and give access. if you see everything is fine then write, and if not, then also write what is wrong.

I created a new manifest file from your post.  
Replaced original auto generated APDE5.2, but when I ran APDE5.2 everything came back.

> **[SVID\_20210513\_114635\_1.mp4 (video)](https://drive.google.com/file/d/14UlITBziIDxQQT-pKs603Z6r81eQr7xY/view?usp=drivesdk)**
>
> Google Drive file.

---

<div class="post-metadata">

**Author:** ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)\
**Post date:** [May 13, 2021, 11:48am UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/167 "2021-05-13T11:48:41Z")

</div>

UPDATE! 2021-05-17 I now have this working:  
_[APDE USB / OTG communication - #24 by glv](https://discourse.processing.org/t/apde-usb-otg-communication/30114/24)_

This post below is now deprecated:

* * *

Adding to the topic…

I took these steps:

1. I purchased an OTG cable to add to my tool chest.

2. **I got this working using Android Mode on PC**.  
[No serial library Processing for smartphone. Help - #149 by glv](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/149)  
I used the **device\_filter.xml** for this.  
This worked so I proceeded to explore further…

3. _UPDATE!_ I can’t reproduce this on APDE so back to the drawing board!

4. I found this issue in step #3:  
[Impossible to grant access to USB port through AndroidManifest · Issue #84 · Calsign/APDE · GitHub](https://github.com/Calsign/APDE/issues/84)  
The _template_ for the AndroidManifest.xml is here:  
[APDE/AppManifest.xml.tmpl at master · Calsign/APDE · GitHub](https://github.com/Calsign/APDE/blob/master/APDE/src/main/assets/templates/AppManifest.xml.tmpl)  
The template was copied, renamed, modified and put in the root of my sketch.

5. There is an APDE v 0.5.2 pre-release that I did not try:  
[Releases · Calsign/APDE · GitHub](https://github.com/Calsign/APDE/releases)  
There was a discussion about this version in #4 above.

Some interesting posts in this topic for further exploration… one day but not anytime soon.

`:)`

---

<div class="post-metadata">

**Author:** ![ZENAR57](https://avatars.discourse-cdn.com/v4/letter/z/a698b9/32.png) [@ZENAR57](https://discourse.processing.org/u/ZENAR57)\
**Post date:** [May 13, 2021, 12:12pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/168 "2021-05-13T12:12:23Z")

</div>

I am trying to understand your wonderful post.  
1.It’s impossible without using a computer  
2. You have tried APDE5.1 but it fails and you want to try later on APDE5.2. But you don’t have time now.  
 ![2021_05_12_11_09_30](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/0/0da9c388ada9133b4e44b2fafe1a7aaf2f5f7d6d.gif)

---

<div class="post-metadata">

**Author:** ![ZENAR57](https://avatars.discourse-cdn.com/v4/letter/z/a698b9/32.png) [@ZENAR57](https://discourse.processing.org/u/ZENAR57)\
**Post date:** [May 13, 2021, 12:18pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/169 "2021-05-13T12:18:35Z")

</div>

May be i found a way to change any manifest. but there is no way to load device\_filter.xml file  
 ![20210513_024358](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/7/7c242d9f784fbe98e6f5c735bdf4bb2c855cf5e0.gif)

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**Author:** ![paulgoux](https://avatars.discourse-cdn.com/v4/letter/p/b9bd4f/32.png) [@paulgoux](https://discourse.processing.org/u/paulgoux)\
**Post date:** [May 13, 2021, 12:56pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/170 "2021-05-13T12:56:15Z")

</div>

Why do you need device xml?

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**Author:** ![ZENAR57](https://avatars.discourse-cdn.com/v4/letter/z/a698b9/32.png) [@ZENAR57](https://discourse.processing.org/u/ZENAR57)\
**Post date:** [May 13, 2021, 1:14pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/171 "2021-05-13T13:14:10Z")

</div>

I dont know.  
what was advised, then I do.

 ![Screenshot_20210513_160945](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/b/b8f4ef3bd7ed5cf6bc12019d5214703af77a83ba.jpeg)

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<div class="post-metadata">

**Author:** ![paulgoux](https://avatars.discourse-cdn.com/v4/letter/p/b9bd4f/32.png) [@paulgoux](https://discourse.processing.org/u/paulgoux)\
**Post date:** [May 13, 2021, 1:25pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/172 "2021-05-13T13:25:18Z")

</div>

Honestly not sure about specifics as i have not coded for arduino.

None of my android projects have required me to change any activity.xml or other file.

However this may be a requirement for usb.

In any case i wish you all the best. Im not sure what else i can add to this, as you should now be able to write any file to your device and set any permission, anything else will be outside the scope of my understanding and would require further research.

In any case you’re welcome to dig through the aandroid reference.

Good luck

> **[USB host overview  |  Android Developers](https://developer.android.com/guide/topics/connectivity/usb/host#java)**

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**Author:** ![ZENAR57](https://avatars.discourse-cdn.com/v4/letter/z/a698b9/32.png) [@ZENAR57](https://discourse.processing.org/u/ZENAR57)\
**Post date:** [May 13, 2021, 1:46pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/173 "2021-05-13T13:46:17Z")

</div>

> [@paulgoux](#):
>
> as you should now be able to write any file to your device and set any permission

not all files and not all permission. it is an android system, there are many restrictions.  
you helped me a lot and I will have a few questions, because your direction turned out to be the most difficult and I need time to figure it out.

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**Author:** ![paulgoux](https://avatars.discourse-cdn.com/v4/letter/p/b9bd4f/32.png) [@paulgoux](https://discourse.processing.org/u/paulgoux)\
**Post date:** [May 13, 2021, 3:28pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/174 "2021-05-13T15:28:55Z")

</div>

Whilst true, for the scope of this sketch you shouldnt need any extreme permissions or obscure folders. The code above will write files to internal storage and allow you to set all basic permissions, again for the scope of this project this should be fine.

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**Author:** ![ZENAR57](https://avatars.discourse-cdn.com/v4/letter/z/a698b9/32.png) [@ZENAR57](https://discourse.processing.org/u/ZENAR57)\
**Post date:** [May 13, 2021, 4:55pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/175 "2021-05-13T16:55:35Z")

</div>

I apologize to everyone present, if I cannot answer immediately, with a delay, and also do not immediately try the code, this is not disrespect towards those present. I am constantly on the road or at work, I answer immediately when there is an opportunity. And to try the code, I need even more time, I am an electrical engineer, not a professional programmer. This topic and the solution to this issue are very important to me. I am very grateful to everyone who helps and participates in finding a solution.  
 ![thank_you](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/3/34fe6dfbb5b9ca18529c11cea0b49f72cb1f17d5.gif)

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**Author:** ![paulgoux](https://avatars.discourse-cdn.com/v4/letter/p/b9bd4f/32.png) [@paulgoux](https://discourse.processing.org/u/paulgoux)\
**Post date:** [May 13, 2021, 5:20pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/176 "2021-05-13T17:20:00Z")

</div>

No problem. Its difficult to be able to troubleshoot everything with so many different types of devices out there and the forum whilst ideal for gathering a great number of people still fails in some instances as the nuances of communication arent very well translated.

In any case a bit of patience with forum members goes a long way.

furthermore processing android is something which i too have been frustrated with. The documentation is often obscure and requires a certain level of understanding, and unfortunately it feels very much like the community gave up on it.

Rapid development on android could be a thing if we spend some time converting or wrapping some of the android native code into more userfriendly code.

I am currently working on this my BMS, which was initially named for Button Menus and Sliders, but can also mean Button management System (a little observational humour for you). This library will do just that.

im currently converting the last code i sent you so others in the future may have a simpler time with this.

Features i will add.

Full custom ui with;

Sliders  
Menus  
Tabs  
SliderBoxes  
Dock  
Dropdownmenu  
Textinput  
File browser  
File save  
File Read  
Image save  
Image load  
Bluetooth  
Camera  
Serial

I shall also add android specific code whereever possible so you can make use of:

Toast notifications  
Android text input  
Android lists  
Etc.

It is a work in progress and currently only the ui part is useable but i still have to wrestle with some unexpected button behaviour and need to complete the styling option to reflect modern alternatives.

Should be done with logic and ui functionality and read write and text input this week.

The rest will have to wait, as like you this is really a hobby which i do along my main job, and so cannot dedicate all my time.

Also please take a look at some of the following

> **[EmmanuelPil - Overview](https://github.com/EmmanuelPil)**
>
> EmmanuelPil has 2 repositories available. Follow their code on GitHub.

@noel is no longer on the forum but left a great resource in these repos.

And of course the ketai repo with other examples

[http://ketai.org/examples/](http://ketai.org/examples/)

Unfortunately neither of these have serial, but with a bit of time i feel we should be able to provide a satisfactory solution.

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**Author:** ![ZENAR57](https://avatars.discourse-cdn.com/v4/letter/z/a698b9/32.png) [@ZENAR57](https://discourse.processing.org/u/ZENAR57)\
**Post date:** [May 13, 2021, 5:40pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/177 "2021-05-13T17:40:17Z")

</div>

![20210513_203843](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/9/9b40c07d22789303a29305693c1951c956456d42.gif)

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**Author:** ![jafal](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/jafal/32/19112_2.png) [@jafal](https://discourse.processing.org/u/jafal)\
**Post date:** [May 13, 2021, 6:22pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/178 "2021-05-13T18:22:40Z")

</div>

[![](https://img.youtube.com/vi/wUG6VeSx8Vk/maxresdefault.jpg "Android+Arduino serial(USB) communication. Source code+APP. Robot car project#11") ](https://www.youtube.com/watch?v=wUG6VeSx8Vk)

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**Author:** ![jafal](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/jafal/32/19112_2.png) [@jafal](https://discourse.processing.org/u/jafal)\
**Post date:** [May 13, 2021, 6:58pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/179 "2021-05-13T18:58:46Z")

</div>

@ZENAR57

i think the main issue is how to initialization the serial library

read this link and back to the library then compare the steps

[https://hingxyu.medium.com/arduino-android-serial-communication-b72b124142fb](https://hingxyu.medium.com/arduino-android-serial-communication-b72b124142fb)

for instance this step has to be approved in similar way with serial library

b) Add [jitpack](https://jitpack.io/) to your _ **project.build.gradle** _ file.

and this step also but i do not know how to add it

Add library to dependencies

dependencies {  
implementation ‘com.github.mik3y:usb-serial-for-android:3.3.1’  
}

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**Author:** ![jafal](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/jafal/32/19112_2.png) [@jafal](https://discourse.processing.org/u/jafal)\
**Post date:** [May 13, 2021, 7:19pm UTC](https://discourse.processing.org/t/no-serial-library-processing-for-smartphone-help/29870/180 "2021-05-13T19:19:10Z")

</div>

as for this [device\_filter.xml](https://github.com/mik3y/usb-serial-for-android/blob/master/usbSerialExamples/src/main/res/xml/device_filter.xml)  
you can create the path in side your project folder if the path not already presented and add it with any editor

in one of my photos up i show where is the path

you have to be sure that you followed this steps

**1.** Add library to your project:

Add [jitpack.io](http://jitpack.io) repository to your root build.gradle:

allprojects { repositories { … maven { url ‘[https://jitpack.io](https://jitpack.io)’ } } }

Add library to dependencies

dependencies { implementation ‘com.github.mik3y:usb-serial-for-android:3.3.1’ }

**2.** If the app should be notified when a device is attached, add [device\_filter.xml](https://github.com/mik3y/usb-serial-for-android/blob/master/usbSerialExamples/src/main/res/xml/device_filter.xml) to your project’s `res/xml/` directory and configure in your `AndroidManifest.xml` .

\<activity android:name="…" …\>

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