I think the problem is that you forgot to extends from your BaseActivity
public class MainActivity extends BaseActivity
I tried and everything is Ok
MainActivity
package com.stackoverflow.reusableview;
import android.os.Bundle;
import android.view.Menu;
public class MainActivity extends BaseActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
BaseActivity
package com.stackoverflow.reusableview;
import android.app.Activity;
import android.view.View;
import android.widget.Toast;
public class BaseActivity extends Activity {
public void headerClickHandler(View v) {
switch (v.getId()) {
case R.id.btnBack:
Toast.makeText(this, "TEST", Toast.LENGTH_LONG).show();
break;
default:
break;
}
}
}
header.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView android:id="@+id/txtHeading"
android:text="@string/general_title"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_height="30dp"
android:layout_width="200dp"/>
<Button android:id="@+id/btnBack"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_height="30dp"
android:layout_width="100dp"
android:background="@android:color/black"
android:text="@string/return_value"
android:onClick="headerClickHandler"
/>
</RelativeLayout>
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<include layout="@layout/header"/>