How to use multiple buttons for multiple threads in android?

Question

I've been working on this program for some time now and. I was stuck on how to handle my multiple buttons issue.I have three buttons that needs to start different threads but i've looked at the the stuff on google for threading and multithreading and i couldnt find the answer i was looking for. From my understanding public void run() can only be called once in an class for threads? How would i create multiple threads that differ in code in one class?

Example of what i have seen that would be the best solution to my problem is:

@Override
public void onClick(View v) {
    // TODO Auto-generated method stub
    switch (v.getId()) {
    case R.id.Line:
       // Call to Thread line
        break;
    case R.id.Enter:
        //Call to Thread Enter
            break;
    case R.id.arc
    //Call to Thread Arc
        }

Example of the line thread and enter thread:

        Thread enter = new Thread() {
        public void run() {
    DrawingUtils call = new DrawingUtils();
    EditText cl = (EditText) findViewById(R.id.editText1);
    String in = cl.getText().toString();
    call.setInputCoords(in);
    notifyAll();
        }

};

        Thread line = new Thread() {
        public void run() {
            info.setText("Enter X,Y,Z for Point 1");
            try {
                wait();
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            call.addLine();
            info.setText("Enter X,Y,Z for Point 2");
            try {
                wait();
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            call.addLine();


        }
    };
    line.start();

A class is supposed to encapsulate a unique functionality. So you have to write separate classes for different threads which differ in their functionality. — Kishore, Jun 21 '13 at 04:21
Ok so would I be able to create inner classes to the DrawingUtils class and run the threads from my mainactivity class? If so how would I call the threads when a button is pushed? — Dakota Miller, Jun 21 '13 at 04:35

score 1 · Accepted Answer · answered Jun 21 '13 at 04:13

Create other inner class which extends thread like

    class Line extends Thread {
        public void run() {
    DrawingUtils call = new DrawingUtils();
    EditText cl = (EditText) findViewById(R.id.editText1);
    String in = cl.getText().toString();
    call.setInputCoords(in);
    notifyAll();
        }

};

now start using new Line().start()

score 0 · Answer 2 · edited May 23 '17 at 12:13

0

U Cant update UI normally on new thread which you launch.. please read more about UI before development..... this may help you

to set test for text view in your code

info.post(new Runnable() {
 @Override
    public void run() {
       info.setText("Enter X,Y,Z for Point 1"); 
    }
});

edited May 23 '17 at 12:13

Community

1
1

answered Jun 21 '13 at 04:22

Sandeep P

4,291
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Thank for the info I knew about the handlers but haven't read much on them. – Dakota Miller Jun 21 '13 at 04:36

How to use multiple buttons for multiple threads in android?

2 Answers2