I want to search for a particular file in my sd card . So i am trying to list complete files and search for the pattern. Please see code below
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String root_sd = Environment.getExternalStorageDirectory().toString();
file = new File(root_sd);
listfiles( new File(root_sd));
}
public void listfiles(File file) {
//file = new File(path);
// file = new File( root_sd ) ;
File list[] = file.listFiles();
Log.i("DIR", "PATH" +file.getPath());
for (int i = 0; i < list.length; i++) {
// myList.add( list[i].getName() );
File temp_file = new File(file.getAbsolutePath(),list[i].getName());
Log.i("DIR", "PATH" +temp_file.getAbsolutePath());
if (temp_file.isFile() && temp_file.listFiles() != null) {
Log.i("inside", "call fn");
listfiles(temp_file);
} else {
if (list[i].getName().toLowerCase().contains("pattern1"))
Log.i("File", i + list[i].getName());
if (list[i].getName().toLowerCase().contains("pattern2"))
Log.i("File", i + list[i].getName());
}
}
Here only first level of search is happening . This condition if (temp_file.isFile() && temp_file.listFiles() != null)
is always returning false and thus recursive call not happening. Please help me to fix it. Thanks for your answer and time.
if the temp_file.isFile()
returns true then it means it is a file and hence temp_file.listFiles()
automatically becomes null thus making your entire statement false. Thus your combined statement returns a false always. What you need is a ||
in place of &&
.