@Nullable
private boolean deletFile(File file) {
if (!file.delete()) {
DocumentFile sdDir = getExternalSdDocumentFile();
if (sdDir == null) return false;
String baseS = sdDir.getName();
String fileFolder = file.getAbsolutePath();
String[] split = fileFolder.split("/");
DocumentFile tmpdir = null;
boolean append = false;
for (String aSplit : split) {
if (aSplit.equals(baseS) || append) {
if (!append) {
append = true;
tmpdir = sdDir;
} else {
tmpdir = tmpdir.findFile(aSplit);
}
}
}
boolean d = false;
d = !(tmpdir != null && tmpdir.exists()) || tmpdir.delete();
Logger.d("delteDocumentFile", "file delted:" + d);
return d;
}
return true;
}
/**
* Create a folder. The folder may even be on external SD card for Kitkat.
*
* @param file The folder to be created.
* @return True if creation was successful.
*/
public static boolean mkdir(final File file, Context context) {
if (file == null) return false;
if (file.exists()) {
// nothing to create.
return file.isDirectory();
}
// Try the normal way
if (file.mkdirs()) {
return true;
}
// Try with Storage Access Framework.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP
&& FileUtil.isOnExtSdCard(file, context)) {
DocumentFile document = getDocumentFile(file, true, context);
// getDocumentFile implicitly creates the directory.
return document.exists();
}
// Try the Kitkat workaround.
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
try {
return MediaStoreHack.mkdir(context, file);
} catch (IOException e) {
return false;
}
}
return false;
}