Question of keeping the photo

[jonetta]

This program keeps the camera photos in the folder. Pictures/Faces , giving the name to each of them on principle, "face_" + n + ".jpg" where n is the variable that was obtained from the schet.dat file (this file is also being created at the beginning. Its values are increased by 1, with each photograph retained. I managed to keep the photos I needed, but there's one problem. For example, the user took the first three photos, they were retained as face_1.jpg, face_2.jpg and face_3.jpg. It's okay, but when the user removes all the photos from the photos. Pictures/Faces , they continue to be face_4.jpg, face_5.jpg, face_6.jpg, etc. Okay. I've set up a condition checking whether the Faces file is empty, but it doesn't help. Please help.

public class MainActivity extends Activity implements ImgPath
{
public void onCreate(Bundle savedInstanceState){

    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    imagesFolder.mkdir();

    Button buttonCheck = (Button)findViewById(R.id.mainButton);
    buttonCheck.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                MyappDir.mkdir();
                File schet = new File(MyappDir, "schet.dat");
                if(imagesFolder == null | schet == null){ 
                    DataOutputStream out = null; 
                    try { 
                        Integer n = Integer.valueOf(1);
                        out = new DataOutputStream(new FileOutputStream(schet));
                        out.writeInt(n.intValue()); 
                        out.close();
                        File image = new File(imagesFolder, "face_" + n + ".jpg");
                        Uri uriSavedImage = Uri.fromFile(image);
                        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
                        startActivityForResult(cameraIntent, 1112);
                    } catch (Exception e) {
                        e.printStackTrace(); 
                    } 
                } else {
                    Integer n = 0;
                    DataInputStream in = null; 
                    try { 
                        in = new DataInputStream(new FileInputStream(schet)); 
                        n = Integer.valueOf(in.readInt());
                        in.close();
                        n++;
                        File image = new File(imagesFolder, "face_" + n + ".jpg");
                        Uri uriSavedImage = Uri.fromFile(image);
                        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
                        startActivityForResult(cameraIntent, 1112);
                    } catch (Exception e) { 
                        e.printStackTrace();  
                    }
                    DataOutputStream out = null; 
                    try { 
                        out = new DataOutputStream(new FileOutputStream(schet));
                        out.writeInt(n.intValue()); 
                        out.close();
                    } catch (Exception e) {
                        e.printStackTrace(); 
                    } 
                }
            }
    });
}

protected void onActivityResult(int requestCode, int resultCode, Intent data){
    super.onActivityResult(requestCode, resultCode, data);
    Intent intent = new Intent(MainActivity.this, Result.class);
    startActivity(intent);
}

}

[Avante]

You have a condition. if(imagesFolder == null | schet == null) I'm checking on the folder only and if the file is schet.dat♪ I mean, it only works once.

You're gonna have to another check on the number of elements in the folder:

if(imagesFolder == null || imagesFolder.listFiles().length == 0 || schet == null){ 
  // 
}