Setting the value of an Android TextView when I click a button

Question

In Java, if I want to set the value of a JLabel when I click a JButton, I can code it like this...

JButton button = new JButton("add");
JButton label = new JLabel();

public void addListenersToButtons(){
    button.addActionListener(this);
}

public void actionPerformed(ActionEvent e) {
    Object src = e.getSource();
    if (src == button) {
        label.setText("this is the number = " + number);
    }
}

I want to be able to do a similar thing in Android, where I set the value of a TextField when the user clicks a button. What is the appropriate code for this in Android?

must need to research about the problems for minimum 5-10 mins. — Kartihkraj Duraisamy, Apr 17 '12 at 13:01

score 5 · Answer 1 · answered Apr 17 '12 at 12:38

Here's an example:

    final Button btn = (Button) findViewById(R.id.btn);

    btn.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            TextView tv = (TextView) findViewById(R.id.TextView1);
            tv.setText("hellooo");
        }
    });

score 3 · Answer 2 · answered Apr 17 '12 at 12:36

3

button.setOnCLickListenere(new OnCLickListsner(){

public void onClick(View v){
 text.setText("text"); //assuming you have reference for the TextView and button
}
});

But you definitely need to go through the basics of android first..

answered Apr 17 '12 at 12:36

ngesh

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4
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score 0 · Answer 3 · answered Apr 17 '12 at 12:41

public static int num=0;
plus.setOnCLickListenere(new OnCLickListsner(){
public void onClick(View v){

num=num+1;
 text.setText("Number "+num); //assuming you have reference for the TextView and button
}
});

minus.setOnCLickListenere(new OnCLickListsner(){
public void onClick(View v){

num=num-1;
 text.setText("Number "+num); //assuming you have reference for the TextView and button
}
});

Hope you want to do something like this. Here are two buttons on pressing plus value will be added, and on pressing minus a number will be deducted.

Setting the value of an Android TextView when I click a button

3 Answers3