@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.line_list);
// Setup the list
adapter = new IconAdapter<FileWrapper>(this, R.layout.line_list_item);
ListView list = (ListView) findViewById(R.id.list);
list.setAdapter(adapter);
list.setOnItemClickListener(this);
// Load Directory
if (savedInstanceState != null) {
backStack = savedInstanceState.getParcelableArrayList("BACKSTACK");
}
if (backStack == null || backStack.size() == 0) {
backStack = new ArrayList<BackStackItem>();
String startPath =
(startDirectory == null || startDirectory.isEmpty())
? Environment.getExternalStorageDirectory().getPath()
: startDirectory;
backStack.add(new BackStackItem(startPath, false));
}
wrapFiles();
this.setVolumeControlStream(AudioManager.STREAM_MUSIC);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (backStack.size() > 1) {
backStack.remove(backStack.size() - 1);
wrapFiles();
} else {
Intent intent = new Intent();
setResult(RESULT_CANCELED, intent);
finish();
}
return true;
}
return super.onKeyDown(keyCode, event);
}
@Override
public void onItemClick(AdapterView<?> aListView, View aView, int aPosition, long aID) {
final FileWrapper item = adapter.getItem(aPosition);
if (item.parentItem && backStack.get(backStack.size() - 1).parentIsBack) {
backStack.remove(backStack.size() - 1);
wrapFiles();
return;
} else if (item.dirSelectItem) {
finishWithPath(listedDirectory.getAbsolutePath());
return;
}
final File selected = item.parentItem ? listedDirectory.getParentFile() : item.file;
if (selected.isDirectory()) {
backStack.add(new BackStackItem(selected.getAbsolutePath(), !item.parentItem));
wrapFiles();
} else {
String filePath = selected.getAbsolutePath();
finishWithPath(filePath);
}
}
private void wrapFiles() {
listedDirectory = new File(backStack.get(backStack.size() - 1).path);
if (!listedDirectory.isDirectory()) {
throw new IllegalArgumentException("Directory is not valid.");
}
adapter.clear();
setTitle(listedDirectory.getAbsolutePath());
if (isDirectoryTarget) adapter.add(new FileWrapper(null, FileWrapper.DIRSELECT, true));
if (listedDirectory.getParentFile() != null)
adapter.add(new FileWrapper(null, FileWrapper.PARENT, true));
// Copy new items
final File[] files = listedDirectory.listFiles();
if (files != null) {
for (File file : files) {
String path = file.getName();
boolean allowFile = file.isDirectory() || (filterPath(path) && !isDirectoryTarget);
if (allowFile)
adapter.add(new FileWrapper(file, FileWrapper.FILE, file.isDirectory() || true));
}
}
// Sort items
adapter.sort(
new Comparator<FileWrapper>() {
@Override
public int compare(FileWrapper aLeft, FileWrapper aRight) {
return aLeft.compareTo(aRight);
};
});
// Update
adapter.notifyDataSetChanged();
}