Answers for "onclick button android studio"

android onlcik java

Button button = (Button) findViewById(R.id.button_send);
button.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
        // Do something in response to button click
    }
});
//https://developer.android.com/guide/topics/ui/controls/button

onclick method android

public void clickFunction (View view){}

android java buttons

public void clickFunction(View view)
/* Text attributes + onClick (in this case: clickFunction)
Basics: Constraint list / layout margin */