Null Pointer Exception in android(Resource layout mismatch error)

      When running the application in android it automatically crashes the application because of the null pointer exception.There are different types of null pointer exception are available in android,now on this time we are going to see the unknown resource null pointer exception.

06-15 11:41:09.356: E/AndroidRuntime(1116): FATAL EXCEPTION: main

06-15 11:41:09.356: E/AndroidRuntime(1116): Process: com.example.sampleclass, PID: 1116

06-15 11:41:09.356: E/AndroidRuntime(1116): java.lang.NullPointerException

Solution

     To resolve this error firstly you need to check how many layout files your are having,for example if you are having one layout file called activity_main.xml in your layout folder.Now you need to sink this layout file properly in your java file for example 

MainActivity.java

public class MainActivity extends Activity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.abc_search_view);

    }

 

}

Now listen properly layout folder having only the activity_main.xml file now your java file is trying to sink the another file which is not available.

       setContentView(R.layout.abc_search_view);

for rectifying this issue replace the code like this.   

       setContentView(R.layout.activity_main);

This is the problem in your android application.It differs from many exception and there are lot of null pointer exception available.Search according to your exception if you have doubts comment it below.