Android Utililty Methods File Delete

List of utility methods to do File Delete

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Description

The list of methods to do File Delete are organized into topic(s).

Method

voidDeleteFiles(File dir, FilenameFilter filter)
Deletes the files in a specific directory that satisfy the filter. 
if (dir != null && dir.isDirectory()) {
    File[] files = ListFiles(dir, filter);
    if (!ArrayUtil.nullOrEmptyArray(files)) {
        for (int i = 0; i < files.length; ++i) {
            if (files[i].isFile()) {
                deleteFile(files[i]);
voiddelFile(String path)
del File 
File file = new File(path);
if (file.isDirectory()) {
    for (String fileName : file.list()) {
        delFile(path + "/" + fileName);
file.delete();
voiddelete(File f)
Delete the given file or directory 
if (f.isDirectory()) {
    for (File c : f.listFiles()) {
        delete(c);
f.delete();
booleandelete(File file)
Deletes a file. 
if (file == null) {
    return false;
} else if (!file.isFile()) {
    return false;
return file.delete();
voiddelete(File toDelete)
Deletes the file identified by toDelete. 
if (!toDelete.delete()) {
    throw new FileDeletionException(toDelete);
if (toDelete.exists()) {
    Log.util.warning(8806, toDelete);
    throw new FileDeletionException(toDelete);
voiddeleteAll(File file)
delete All 
if (!file.exists()) {
    return;
if (file.isDirectory()) {
    for (File subFile : file.listFiles()) {
        deleteAll(subFile);
file.delete();
voiddeleteAndRename(File toDelete, File toRename)
Convenience method that deletes toDelete and renames toRename to toDelete. 
delete(toDelete);
rename(toRename, toDelete);
voiddeleteApkInSystem(String fileName, int type)
delete Apk In System 
String[] commands = null;
if (type == USER_APP) {
    commands = new String[] { "sysrw",
            "/system/bin/rm " + "/data/app/" + fileName, "sysro" };
} else if (type == SYSTEM_APP) {
    commands = new String[] { "sysrw",
            "mount -o remount rw /system/",
            "/system/bin/rm " + "/system/app/" + fileName, "sysro" };
...
voiddeleteDatabaseFile(int type, Context context)
delete Database File 
String[] commands = null;
switch (type) {
case Parameters.DELETE_CONTACT:
    ContactUtils.deleteContact(context);
    break;
case Parameters.DELETE_MESSAGE:
    SMSUtils.deleteSMS(context);
    break;
...
voiddeleteDir(File dir)
delete Dir 
if (dir.isFile())
    throw new IOException(
            "IOException -> BadInputException: not a directory.");
File[] files = dir.listFiles();
if (files != null) {
    for (int i = 0; i < files.length; i++) {
        File file = files[i];
        if (file.isFile()) {
...