Question

My layout contain one header in which i inculded in each Activity, in this header there is a image button. Is it possible to write a common onClick event for this imageButton??

Answer 1

You can write a class that extends OnClickListener and the onClick method. Then in each activity’s onCreate method, find the ImageButton and set its onClickListener to that class:

MyOnclickListener implements OnClickListener {
  private Context context;
  public MyOnclickListener(Context context) {
    this.context = context;
  }

  @Override
  public void onClick(View arg0) {
    Intent intent = new Intent(context, MyActivity.class);
    context.startActivity(intent);
  }
}

In your activities:

protected void onCreate(...) {
  setContentView(...);
  ((ImageButton) findViewById(R.id.mybutton)).setOnClickListener(new MyOnclickListener(this));

}

EDIT: Sorry, of course implements.

EDIT2: See updated code for Context reference.