Viewing excel files in my android app

Android 7.0 Update:

Android 7.0 will throw FileUriExposedException if you try to open your app document with an external app. You need to implement FileProvider refer This Answer.

here is a manual route.

Using JExcelApi in an Android App

How to read excel file using JXL 2.6.12 jar

but here is a little more easier one.

open application

but i guess you have to find out the MIME TYPE.

EDIT

got the mime type as well

Setting mime type for excel document

UPDATE

so something like this might work.

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(path, "application/vnd.ms-excel");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);


try {
    startActivity(intent);
} 
catch (ActivityNotFoundException e) {
    Toast.makeText(OpenDoc.this, "No Application Available to View Excel", Toast.LENGTH_SHORT).show();
}