How to pass parameters to OnClickListener?

Question

How can i pass parameter to an OnClickListener() ?

Got my Listener:

   OnClickListener myListener = new OnClickListener()
   {

     @Override
     p         


        

Answer 1

Another solution for that issue, you can create a regular method and pass to it the View you want to add the onClickListener to it, and pass the parameters you want to use along with it:

Button b1 = new Button();
String something = "something";
Button b2 = new Button();
String anotherSomething = "anotherSomething";
setOnClick(b1, something);
setOnClick(b2, anotherSomething);

private void setOnClick(final Button btn, final String str){
    btn.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {

                  // Do whatever you want(str can be used here)

           }
    });
}

Answer 2

use implements OnClickListener like below code

public class Test extends Activity implements OnClickListener{
    Button btn1;
    Button btn2;
    Button btn3;
    Button btn4;
    Button btn5;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        //initialize btn...~~~

        btn1.setOnClickListener(this);
        btn2.setOnClickListener(this);
        btn3.setOnClickListener(this);
        btn4.setOnClickListener(this);
        btn5.setOnClickListener(this);
    }

    @Override
    public void onClick(View view) {
        switch(view.getId()) {
            case will be determine by Button's Id (R.id.blablabla)
        }
}

Answer 3

I know this is a late answer but hopefully it can help someone. None of the existing answers worked in my situation but I ended up using the setTag feature of an image that was acting like a button. My account info was in a global member variable that was set up when the activity started.

In this case I am setting up a table with each row being an account. The account details are shown when the image is clicked (the image is just an info icon).
Thus:

// prior code....
// NOTE: oneAccount is an object (AccountInfo) holding information about the account

// column with the "detail" arrow
image1 = new ImageView(this);
image1.setImageResource(R.drawable.info);
image1.setLayoutParams(new TableRow.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT));
image1.setPadding(15, 1, 15, 1);
image1.setTag(oneAccount);
// add a listener to go to that account detail on a click
image1.setOnClickListener(new TextView.OnClickListener() {
    public void onClick(View v) {
    // change the color to signify a click
    v.setBackgroundColor(getResources().getColor(R.color.button_selected));


    // get what we need out of the tag
    AccountInfo thisAcct = (AccountInfo) v.getTag();

        // your code would do other stuff here

}
});

// add the image to the table row
tr1.addView(image1);

Answer 4

Use your own custom OnClickListener

public class MyLovelyOnClickListener implements OnClickListener
   {

     int myLovelyVariable;
     public MyLovelyOnClickListener(int myLovelyVariable) {
          this.myLovelyVariable = myLovelyVariable;
     }

     @Override
     public void onClick(View v)
     {
         //read your lovely variable
     }

  };

Answer 5

If you have static content associated with the view, another option is to use a HashMap to map the view id to the content.

private static Map<Integer, String> idToStringMap = new HashMap<Integer, String>();

Initialize the map in onCreate:

idToStringMap.put(R.id.button1, "hello");
idToStringMap.put(R.id.button2, "world");
// ...

Then get the value from the view id in onClick:

public void onClick(View v) {

    String myString = idToStringMap.get(v.getId());
}

This is a little cleaner than using a long set of switch cases.

Answer 6

In Kotlin :

Here i'm passing a view as a parameter onClick of Another view

define your Handler class object first in xml layout like this:

<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:bind="http://schemas.android.com/tools">
    <data>
        <import type="android.view.View" />
        <variable
            name="handler"
            type="com.demoapp.controllers.Handler" />
   </data>

and define button which perform click functionality.

<Button
  android:id="@+id/button2"
  android:onClick="@{(view) -> handler.getbuttonClickEvent(textViewId)}"
  .../>

and your text view like this: remember your TextView id will be converted like textViewId

<TextView
        android:id="@+id/text_view_id"
        ... />

final set up method in your Handler class

fun getbuttonClickEvent(view: TextView){
        view.text="Hello World"
    }