Question

How can I search all .pdf and .doc files present in the Android device through a programmatic way?

Answer 1

Try using the below code. This will work for you.

 public void walkdir(File dir) {
    String pdfPattern = ".pdf";

    File listFile[] = dir.listFiles();

    if (listFile != null) {
        for (int i = 0; i < listFile.length; i++) {

            if (listFile[i].isDirectory()) {
                walkdir(listFile[i]);
            } else {
              if (listFile[i].getName().endsWith(pdfPattern)){
                                  //Do whatever you want

              }
            }
        }
    }
}

To search on the whole SD card, call this function using:

walkdir(Environment.getExternalStorageDirectory());