How to load an image in Android Studio using a Processing sketch - android-studio

Question

I cannot load an image using a Processing sketch.
I am using Android Studio on Windows 10 with an android emulator. I have placed an image file called "car.png" in the following directory:
E:\Android\AndroidStudioProjects\car\app\src\main\res\drawable
I also placed it in the following directory using the Device File Explorer of Android Studio:
/data/user/0/com.example.ijusttrytoloadanimage/files/
When I double-click it from the Project tree or from the Device File Explorer, it shows the car image.
But when I run my project in Android Emulator I get the following error message:
W/System.err: java.io.FileNotFoundException: /data/user/0/com.example.ijusttrytoloadanimage/files/car.png (Permission denied)
This is my Sketch.java file:
package com.example.ijusttrytoloadanimage;
import processing.core.PApplet;
import processing.core.PImage;
public class Sketch extends PApplet {
public PImage car;
public void settings() {
fullScreen();
}
public void setup() {
imageMode(CENTER);
car = loadImage("car.png");
}
public void draw() {
background(0);
translate((float) width/2, (float) height/2);
if (car != null) {
image(car, 0, 0);
} else {
print("nothing shows up!");
}
}
The message I get when running the Sketch.java is "nothing shows up!" meaning that the PImage variable car is still empty.
Why I get this permission denied message although I use the internal storage which by default has its access granted? What should I do to show my image file to the emulator's screen?
This is my MainActivity.java file:
package com.example.ijusttrytoloadanimage;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import processing.android.PFragment;
import processing.android.CompatUtils;
import processing.core.PApplet;
public class MainActivity extends AppCompatActivity {
private PApplet sketch;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FrameLayout frame = new FrameLayout(this);
frame.setId(CompatUtils.getUniqueViewId());
setContentView(frame, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
sketch = new Sketch();
PFragment fragment = new PFragment(sketch);
fragment.setView(frame, this);
}
#Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (sketch != null) {
sketch.onRequestPermissionsResult(
requestCode, permissions, grantResults);
}
}
#Override
public void onNewIntent(Intent intent) {
super.onNewIntent(intent);
if (sketch != null) {
sketch.onNewIntent(intent);
}
}
}
This is my AndroidManifest.xml file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.ijusttrytoloadanimage">
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.ijusttrytoloadanimage"
>
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Answer 1

I finally found the answer. If anyone else has the same problem, just do the following:
In Project View right-click on app and select New -> Directory. Type the name "assets" in the new window and select src/main/assets from below.
Copy your image file to the new directory app/src/main/assets.
Load your image in your Sketch.java file with the command loadImage(your_image.png);
It works!