The saveFrame function does not work on Android.
Here is a workaround.
import android.os.Environment;
int tel = 0, x;
boolean no_loop = true;
String my_folder = "my_frames"; // Must be an existing folder one level above absolute path
String data_folder_path = new String(Environment.getExternalStorageDirectory().getAbsolutePath()+"/"+my_folder+"/");
PImage pi;
void setup() {
size(100, 100);
}
void draw() {
if (no_loop) {
background(204);
if (x < 100) {
line(x, 0, x, 100);
x = x + 1;
} else {
no_loop = false;
} // Saves each frame as line-000001.png, line-000002.png, etc.
saveFrame("line-"); // numbers(hashtags) will be included in saveFrame()
}
}
void saveFrame(String s) {
int maxHashes=6;
tel++;
String fs = String.format("%1$" + maxHashes + "s", tel).replace(' ', '0');
pi = get(0, 0, width, height);
pi.save(data_folder_path+s+fs+".png");
}