Android Utililty Methods Directory Clean

List of utility methods to do Directory Clean

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Description

The list of methods to do Directory Clean are organized into topic(s).

Method

voidcleanDirectory(File directory)
clean Directory 
if (!directory.exists()) {
    String message = directory + " does not exist";
    throw new IllegalArgumentException(message);
if (!directory.isDirectory()) {
    String message = directory + " is not a directory";
    throw new IllegalArgumentException(message);
IOException exception = null;
File[] files = directory.listFiles();
for (File file : files) {
    try {
        forceDelete(file);
    } catch (IOException ioe) {
        exception = ioe;
if (null != exception) {
    throw exception;
} else {
    return;
voidcleanDirectory(File directory)
Cleans a directory without deleting it. 
if (!directory.exists()) {
    String message = directory + " does not exist";
    throw new IllegalArgumentException(message);
if (!directory.isDirectory()) {
    String message = directory + " is not a directory";
    throw new IllegalArgumentException(message);
File[] files = directory.listFiles();
if (files == null) { 
    throw new IOException("Failed to list contents of " + directory);
IOException exception = null;
for (int i = 0; i < files.length; i++) {
    File file = files[i];
    try {
        forceDelete(file);
    } catch (IOException ioe) {
        exception = ioe;
if (null != exception) {
    throw exception;
voidcleanDirectory(String directory)
clean Directory 
cleanDirectory(new File(directory));
voidcleanDirectory(final File directory)
Clean a directory without delete it 
if (!directory.exists()) {
    final String message = directory + " does not exist";
    throw new IllegalArgumentException(message);
if (!directory.isDirectory()) {
    final String message = directory + " is not a directory";
    throw new IllegalArgumentException(message);
final File[] files = directory.listFiles();
if (files == null) { 
    throw new IOException("Failed to list content of " + directory);
IOException exception = null;
for (final File file : files) {
    try {
        forceDelete(file);
    } catch (final IOException ioe) {
        exception = ioe;
if (null != exception) {
    throw exception;
voidclearDir(String dirPath)
clear Dir 
if (StringUtil.isEmpty(dirPath)) {
    return;
File file = new File(dirPath);
if (!file.exists() || file.isFile()) {
    return;
File[] files = file.listFiles();
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