CODEWITHSUNDEEP
androidbutton
Vamsi Challa
Vamsi Challa

Reputation: 11109

Setting Button ID programmatically

Android 2.3.3

I have a table with N rows and N columns. For each row, I should add 4 buttons dynamically, and later do actions based on the button clicked. I know we can set the button IDs with Integer values with button.setID(), but I want to know whether we can set IDs as string values as we set in XML files, such as btnXYZ1 and btnXYZ2 etc.,

Upvotes: 5

Views: 19592

Answers (6)

Yogesh Tatwal
Yogesh Tatwal

Reputation: 2751

for (int i=0;i<nob;i++) {
     Button btn = new Button(this);
     btn.setId(i+1);
     btn.setText("Button"+(i+1));
     btn.setOnClickListener(btnclick); <<<<<<<set click
     btn.setLayoutParams(lprams);
     dynamicview.addView(btn);
}

And add this listner outside the any method and inside class

OnClickListener btnclick = new OnClickListener() {

    @Override
    public void onClick(View view) {

        switch(view.getId()) {
            case 1:
                //first button click
                break;
                //Second button click
            case 2:
                break;
            case 3:
                //third button click
                break;
            case 4:
                //fourth button click
                break;
             .
             .
             .
            default:
                break;
        }
    }
};

Upvotes: 4

android developer
android developer

Reputation: 116070

If you have the references to the views anyway , you can simply save them all into a HashMap, for example using HashMap .

Another alternative , so that you will avoid any typos , is to have an enum as the key of the hashMap , for example : HashMap .

Upvotes: 0

nilesh patel
nilesh patel

Reputation: 832

No you cannot set it to String, the id is int value, even when you set it from XML it is just the resource name of an int value

Upvotes: 0

Raghav Sood
Raghav Sood

Reputation: 82583

The strings you use in your XML files correspond to an int in R.java, and are hence actually ints. The setId() method will only accept an int value as an argument. You could define your IDs in a constants file, something like:

public class Ids {
    public static final int ID_ONE = 1;
}

and then use it as:

button.setId(Ids.ID_ONE);

Upvotes: 2

iTech
iTech

Reputation: 18460

No you cannot set it to String, the id is int value, even when you set it from XML it is just the resource name of an int value

Upvotes: 0

pvn
pvn

Reputation: 2126

You can use tags for that purpose . For example 

btn.setTag("btXYZ");

Upvotes: 14

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