How to extract text from pdf document using MuPDF in Android

Question

I am trying to extract text from a PDF file using MuPDF library in Android platform.

Is it possible to extract text within a rectangle specified by coordinates (left, top, right, bottom)?

Note: I didn't compile the library from source. I am using compiled libraries which is distributed in https://github.com/libreliodev/android.

Answer 1

yeah sure here is the way you can do.

1.GeneratedText activity

public class GeneratedText extends Activity {

private Button close;
private Button clear;
private TextView tv;
private String data;
String text = "";
Intent i;
Context mContext;
  //    MuPDFPageView pdfview = new MuPDFPageView(mContext, null, null);
    private EditText edit;
private Button undo;
public static GeneratedText screen;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_generated_text);

    close = (Button)findViewById(R.id.close);
    clear = (Button)findViewById(R.id.clear);
    tv = (TextView)findViewById(R.id.text1);
    edit = (EditText)findViewById(R.id.edit);
    undo = (Button)findViewById(R.id.undo);
    undo.setEnabled(false);

    i = getIntent();

    data = i.getStringExtra("data");


    tv.setText(data);
    String mypattern = "Name and address of the Employee \n";

    Pattern p = Pattern.compile(mypattern,Pattern.DOTALL);
    if(data.matches(mypattern))
    {
        System.out.println("Start Printing name");
    }
    else
        //do nothing

    edit.setText(data);
    System.out.println("hello user "+"/n"+"user1"+ "\n"+ "user2");

    SharedPreferences pref = getSharedPreferences("key", 0);
    SharedPreferences.Editor editor = pref.edit();
    editor.putString("text", data);
    editor.commit();


    clear.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            tv.setText("");
            edit.setText("");
            undo.setEnabled(true);
        }
    });
    close.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            finish();
        }
    });
    undo.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
             String value = "";
            SharedPreferences pref = getSharedPreferences("key", 0);
            value = pref.getString("text", value);
            edit.setText(value);
            tv.setText(value);
            undo.setEnabled(false); 
        }
    });

}
}

1. now in mupdfactivity write this

public void Showtext( )
{
    destroyAlertWaiter();
    core.stopAlerts();

    MuPDFPageView pdfview = new MuPDFPageView(MuPDFActivity.this, core, null);
    String data = "";
    pdfview.setFocusable(true);
    data = pdfview.getSelectedText();
    Intent i = new Intent(getApplicationContext(),GeneratedText.class);
    i.putExtra("data",data);

    startActivity(i); 

}

call Showtext in OnAcceptButtonClick

and you will get your text.