Develop Reference

opening an external "file explorer" app: how to get absolute path from a uri pointing to a folder

In my app, the user can choose where the created files (text files) are created.
This part is working fine.
But now, I want to open an external "file explorer" app, pointing directly to the chosen folder.
The "file explorer " apps I know accept an absolute path as input (like /storage/emulated/0/Documents/test_folder)
When the user chooses a folder (with Intent.ACTION_OPEN_DOCUMENT_TREE), I get a content uri (like content://com.android.externalstorage.documents/tree/home%3Atest_folder)
Another example with an external sd card:
uri: content://com.android.externalstorage.documents/tree/3877-DB74%3ADocuments%2Ftest_folder
expected path: /storage/3877-DB74/Documents/test_folder
The uri points to a folder, not a file, so I can't use something like openInputStream
I have tried :
File f = new File(uri.getPath());
String path = f.getAbsolutePath();
but it gives: /tree/home:test_folder or /tree/3877-DB74:Documents/test_folder if on sd card
How can I get the real absolute path?
The code I use to call a file explorer:
Intent intent = new Intent(Intent.ACTION_VIEW);
String path = getExternalFilesDir(null).getAbsolutePath();
intent.setDataAndType(Uri.parse(path), "resource/folder");
if (intent.resolveActivityInfo(getPackageManager(), 0) != null)
{
startActivity(intent);
}

so basically you want to get file path from uri
you give try with this code
https://gist.github.com/pratikbutani/eb56f6f9f7013e31d8bfea9effbd4251

I have tried the suggested code (see above).
Unfortunately, I got an exception:
Caused by: java.lang.UnsupportedOperationException: Unsupported Uri content://com.android.externalstorage.documents/tree/home%3Atest_folder
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:167)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:135)
at android.content.ContentProviderProxy.query(ContentProviderNative.java:418)
at android.content.ContentResolver.query(ContentResolver.java:760)
at android.content.ContentResolver.query(ContentResolver.java:710)
at android.content.ContentResolver.query(ContentResolver.java:668)
at ....UriUtils.getDataColumn(UriUtils.java:278)
Here is a copy of the code:
private static String getDataColumn(Context context, Uri uri)
{
Cursor cursor = null;
final String column = "_data";
final String[] projection = { column };
try {
cursor = context.getContentResolver().query(uri, projection,
null, null, null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}

I finally wrote my own method to get the absolute path for a folder from a Uri.
It is surely not fully generic, but it meets my need.
if it can help someone, here is my code:
Note: VOLUME_MAP is a map containing all mounted external volumes
/**************************************************************************/
public static String getRealPathFromContentUri(final Uri uri)
{
if (!isExternalStorageDocument(uri))
{
return null;
}
List<String> segs = uri.getPathSegments();
if (!"tree".equalsIgnoreCase(segs.get(0)))
{
return null;
}
String path = uri.getLastPathSegment();
final String[] split = path.split(":");
final String volumeId = split[0];
String userPath = "";
if (split.length > 1)
{
userPath = "/" + split[1];
}
if ("primary".equalsIgnoreCase(volumeId))
{
return Environment.getExternalStorageDirectory().getAbsolutePath() + userPath;
}
if ("home".equalsIgnoreCase(volumeId))
{
return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS).getAbsolutePath() + userPath;
}
// look for real volumeId
final String volumeName = VOLUME_MAP.get(volumeId);
if (volumeName == null)
{
return null;
}
path = "/storage";
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R)
{
path = Environment.getStorageDirectory().getAbsolutePath();
}
return path + "/" + volumeId + userPath;
}
Thanks to all contributors on this topic.

Android delete file from removable sd card (second external storage)

I've read all topics in this forum but nothing works for me. I have arraylist of paths of files and I need to delete some of them. In my code I try to use:
File file = new File(filesPath.get(0));
file.delete();
if (file.exists()) {
try {
file.getCanonicalFile().delete();
} catch (IOException e) {
e.printStackTrace();
}
if (file.exists()) {
file.getAbsoluteFile().delete();
}
}
Log.e("MyLogs", file.exists() ? "true" : "false");
filesPath I get from MediaStore and it looks like "/storage/extSdCard/mmm/bensound-summer.mp3". I can read this path without any problems, but I can't delete it. Here is my code for getting string array:
ArrayList<String> filesPath = new ArrayList<>();
Uri contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
String[] projection = {MediaStore.Images.Media.DATA};
try {
Cursor cursor = context.getContentResolver().query(
contentUri,
projection,
MediaStore.Audio.Media.IS_MUSIC + " != 0",
null,
null);
if (cursor != null && cursor.moveToFirst() && cursor.getCount() > 0) {
do {
String path = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.DATA));
File file = new File(path);
if (file.exists())
filesPath.add(path);
} while (cursor.moveToNext());
return filesPath;
} else {
return null;
}
} catch (Exception ex) {
ex.printStackTrace();
return null;
}
Of course I added permissions to manifest:
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
From this link I took some code for mine but it didn't help me to solve my problem, that is why I wrote my question here.
EDIT:
Just found the point: I can't delete files from sdcard (removable)!!! from storage of decive everything deletes without any problem.
EDIT 2:
try {
long id = -1;
Cursor cursor = context.getContentResolver().query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Audio.Media._ID },
MediaStore.Audio.Media.DATA + "=?",
new String[] { file.getAbsolutePath() },
null);
if (cursor != null && cursor.moveToFirst() && cursor.getCount() > 0) {
id = cursor.getLong(cursor.getColumnIndex(MediaStore.MediaColumns._ID));
cursor.close();
Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, String.valueOf(id));
DocumentFile documentFile = DocumentFile.fromSingleUri(context, uri);
if (documentFile.delete()) {
Uri mediaContentUri = ContentUris.withAppendedId(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
id
);
context.getContentResolver().delete(mediaContentUri, null, null);
}
}
} catch (Exception ex) {
ex.printStackTrace();
}
I got an exception error:
Failed to delete document
java.lang.UnsupportedOperationException: Unsupported call: android:deleteDocument
error points to line documentFile.delete()

it looks like "/storage/extSdCard/mmm/bensound-summer.mp3".
Then that file is on a removable micro SD card.
Micro SD cards are readonly for your app on modern Android systems.
That's why you cannot delete that file from it.
Well not in the way you try to do it now.

First Check Have You Got permission Read External Storage and Write External Storage then
You Can delete by this code..
You can just use File.delete()
File dir2 = new File(Environment.getExternalStorageDirectory() + "/Eraser/temp");
File dir = new File(Environment.getExternalStorageDirectory() + "/Eraser/Capture");
if (dir.isDirectory())
{
String[] children = dir.list();
for (int i = 0; i < children.length; i++)
{
new File(dir, children[i]).delete();
}
}
dir.delete();
if (dir2.isDirectory())
{
String[] children = dir2.list();
for (int i = 0; i < children.length; i++)
{
new File(dir2, children[i]).delete();
}
}
dir2.delete();

Are you sure that you have got the permission WRITE_EXTERNAL_STORAGE in your application before deleting the file?
As you can already access the file, there should not be any other problem calling the delete method. Moreover, you can also check log cat if there are any exceptions captured

i hope you add below permission in android manifest file..
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
for delete file used below code..
File file = new File(selectedFilePath);
boolean deleted = file.delete();

Can't delete File with the File class

Im trying to delete a music file through my App but can't achieve that. Ive checked with
boolean exists = temp.exists();
boolean isFile = temp.isFile();
if there true and yes they are. These methods returns me true.
But when I come to the delete method :
boolean deleted = temp.delete();
It returns me False and the file is not getting deleted. There are no Exception throws just a false return to my deleted variable.
Im also using these permissons :
<uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-permission android:name="android.permission.ACTION_HEADSET_PLUG"/>
Someone got an Idea for a solution ?
(Or other classes I can use ?)
Edit:
Thats my full code
File temp = new File(str_path);
boolean exists = temp.exists();
boolean isFile = temp.isFile();
if (exists)) {
boolean deleted = temp.delete();
if (deleted) {
Toast.makeText(context, "Successful deleted " + Title_Artist, Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(context, "Not able to delete file " + Title_Artist, Toast.LENGTH_SHORT).show();
}
}
(And I checked while debuging if the object has his path in it and it have it)

Delete file music you must do two task:
Delete file in Storage.
public static boolean delete(File path) {
boolean result = true;
if (path.exists()) {
if (path.isDirectory()) {
for (File child : path.listFiles()) {
result &= delete(child);
}
result &= path.delete(); // Delete empty directory.
}
if (path.isFile()) {
result &= path.delete();
}
if (!result) {
Log.e("Delete", "Delete failed;");
}
return result;
} else {
Log.e("Delete", "File does not exist.");
return false;
}
}
Delete file from MediaStore:
public static void deleteFileFromMediaStore(final ContentResolver contentResolver, final File file) {
int sdk = android.os.Build.VERSION.SDK_INT;
if (sdk >= android.os.Build.VERSION_CODES.HONEYCOMB) {
String canonicalPath;
try {
canonicalPath = file.getCanonicalPath();
} catch (IOException e) {
canonicalPath = file.getAbsolutePath();
}
final Uri uri = MediaStore.Files.getContentUri("external");
final int result = contentResolver.delete(uri,
MediaStore.Files.FileColumns.DATA + "=?", new String[]{canonicalPath});
if (result == 0) {
final String absolutePath = file.getAbsolutePath();
if (!absolutePath.equals(canonicalPath)) {
contentResolver.delete(uri,
MediaStore.Files.FileColumns.DATA + "=?", new String[]{absolutePath});
}
}
}
}
You can reset/rescan MediaStore instead of do some code above.
Note: If you delete from SD card and android 4.4 +
Change for Android 4.4+ : Apps are not allowed to write (delete, modify
...) to external storage except to their package-specific directories.

The path from your comment looks like the file is on a removable SD card. You need special permissions on Android 4.4+ to manage or delete files on an SD card. You will need to use DocumentFile#delete().
For help accessing files on a removable SD card using DocumentFile see the following StackOverflow post:
How to use the new SD card access API presented for Android 5.0 (Lollipop)?
There is also a hack that might work without using DocumentFile as explained by the developer of FX file manager here: http://forum.xda-developers.com/showpost.php?p=52151865

Since you are checking that the file exists, there can only be one reason you can not delete the file: you don't have permissions to do it.
An app can not delete system files, or files of other apps.

Suppose your file path is
Environment.getExternalStorageDirectory().getPath()
+ "/Music"
+ "/"
+ "song.mp3"
delete it like this
File dir = new File(Environment.getExternalStorageDirectory()
.getPath()
+ "/Music");
if (dir.isDirectory()) {new File(dir, song.mp3).delete();}
if you want to delete all the files in music folder do this
if (dir.isDirectory()) {
String[] children = dir.list();
for (int i = 0; i < children.length; i++) {
new File(dir, children[i]).delete();
}
}

Opening shared image via Gmail Intent

I have the following code that correctly attaches the image to the email and sends:
Intent sharingIntent = new Intent(Intent.ACTION_SEND);
sharingIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
// Set tht type to image/* and add the extra text field for the message to send
sharingIntent.setType(Application2.instance().getResString(R.string.share_intent_type_text_image));
sharingIntent.putExtra(Intent.EXTRA_TEXT, String.format(Application2.instance().getResString(R.string.share_intent_body_question), question.question));
if (destFile != null)
{
Uri uri = Uri.fromFile(destFile);
sharingIntent.putExtra(Intent.EXTRA_STREAM, uri);
((ActivityMain) getActivity()).startActivity(Intent.createChooser(sharingIntent, "Share via"));
}
R.string.share_intent_type_text_image is defined as "image/png"
destFile is an image grabbed from the external cache directory of the app, (((ActivityMain) getActivity()).getExternalCacheDir()
However, when I attempt to open the file in Gmail, a dialog appears that says: Info - No app can open this attachment for viewing. I've downloaded the file via my PC and the extension comes up as .File. I can open it with paint and other image viewers.
Anyone experience this before?

Considering the FileProvider problems, and also because I wanted to implement a max cache size for collected temp files, I went with a ContentProvider solution and it works a treat. Basically, you're allowed to use your internal cache without any problem but still provide third party apps with a URI they can use to reference your temporary files you want to share with them. Because you use your internal cache, there will be no unnecessary WRITE_EXTERNAL_STORAGE permission to ask for.
The added max cache size limit (that you can remove from the class by simply deleting everything from checkSize() to the end of the class, for instance, if you can make sure you delete all files directly after sharing, so they won't remain on the device) works by checking the cumulated max size upon each call and clearing up half the cache (deleting the oldest files) if necessary.
public class TemporaryFile extends ContentProvider {
private static final long MAX_SIZE = 512 * 1024;
// commented out on purpose so that you don't forget to rewrite it...
// public static final String AUTHORITY = "com.example.tempfile";
private UriMatcher uriMatcher;
#Override
public boolean onCreate() {
uriMatcher = new UriMatcher(UriMatcher.NO_MATCH);
uriMatcher.addURI(AUTHORITY, "*", 1);
return true;
}
#Override
public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
if (uriMatcher.match(uri) == 1) {
final String file = getContext().getCacheDir() + File.separator + uri.getLastPathSegment();
return ParcelFileDescriptor.open(new File(file), ParcelFileDescriptor.MODE_READ_ONLY);
}
else
throw new FileNotFoundException(uri.toString());
}
#Override
public int update (Uri uri, ContentValues values, String selection, String[] selectionArgs) {
return 0;
}
#Override
public int delete (Uri uri, String selection, String[] selectionArgs) {
return 0;
}
#Override
public Uri insert(Uri uri, ContentValues values) {
return null;
}
#Override
public String getType(Uri uri) {
return null;
}
#Override
public Cursor query (Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
return null;
}
public static File getFile(Context context, String prefix, String extension) throws IOException {
checkSize(context);
File file = File.createTempFile(prefix, extension, context.getCacheDir());
file.setReadable(true);
file.deleteOnExit();
return file;
}
public static Uri getPublicUri(File file) {
return Uri.withAppendedPath(Uri.parse("content://" + AUTHORITY), file.getName());
}
public static void checkSize(Context context) throws IOException {
File dir = context.getCacheDir();
if (getDirSize(dir) > MAX_SIZE)
cleanDir(dir, MAX_SIZE / 2);
}
private static long getDirSize(File dir) {
long size = 0;
for (File file : dir.listFiles())
if (file.isFile())
size += file.length();
return size;
}
private static void cleanDir(File dir, long atLeast) {
long deleted = 0;
File[] files = dir.listFiles();
Arrays.sort(files, new Comparator<File>() {
public int compare(File f1, File f2) {
return Long.valueOf(f1.lastModified()).compareTo(f2.lastModified());
}
});
for (File file : files) {
deleted += file.length();
file.delete();
if (deleted >= atLeast)
break;
}
}
}
Using it couldn't be simpler, just call
File file = TemporaryFile.getFile(this, "prefix", ".extension");
whenever you want to create a new file and
TemporaryFile.getPublicUri(file)
whenever you want to get a public Uri to the file, eg. to pass it to an intent as data or Intent.EXTRA_STREAM.
Being a provider, don't forget to add the necessary manifest entry, either:
<provider
android:name=".TemporaryFile"
android:authorities="com.example.tempfile"
android:exported="true"
tools:ignore="ExportedContentProvider" >
</provider>

This works but requires external storage and the relating permissions. When downloading an app, a dialog will show that the app is requesting to be able to read/write data which may turn users away. Use the FileProvider as Simon suggested in my initial post if that's a concern.
Useful links:
https://developer.android.com/reference/android/support/v4/content/FileProvider.html
I attempted to use the File Provider as Simon suggested in my initial post to no avail. I received a NullPointerException on the following line:
final ProviderInfo info = context.getPackageManager()
.resolveContentProvider(authority, PackageManager.GET_META_DATA);
I was unable to track the problem after following the guide at:
https://developer.android.com/reference/android/support/v4/content/FileProvider.html
as well as the other thread at:
How to use support FileProvider for sharing content to other apps?
At this point I realized there is no file type set for the images being used. I simply added .png to the files and the attachments work correctly in Gmail as well as the previous apps that already worked.
I provided the following code if anyone was curious how I shared an internal file. It's not complete and does not handle errors completely but it may be useful for someone as a start.
// Copy image file to external memory and send with the intent
File srcFile = getImage();
File destDir = new File(((ActivityMain) getActivity()).getExternalCacheDir(),
Application2.instance().getResString(R.string.temporary_external_image_path));
if(!destDir.exists())
{
destDir.mkdirs();
}
if(destDir != null && srcFile != null)
{
File destFile = new File(destDir, srcFile.getName());
if (!destFile.exists())
{
try
{
Application2.instance().copy(srcFile, destFile);
}
catch (IOException e)
{
if (BuildConfig.DEBUG) Log.e("Failed to copy file '" + srcFile.getName() + "'");
}
}
if (destFile != null)
{
Uri uri = Uri.fromFile(destFile);
sharingIntent.putExtra(Intent.EXTRA_STREAM, uri);
((ActivityMain) getActivity()).startActivity(Intent.createChooser(sharingIntent, "Share via"));
}
}

How to delete a file from SD card

I am creating a file to send as an attachment to an email. Now I want to delete the image after sending the email. Is there a way to delete the file?
I have tried myFile.delete(); but it didn't delete the file.
I'm using this code for Android, so the programming language is Java using the usual Android ways to access the SD card. I am deleting the file in the onActivityResult method, when an Intent is returned to the screen after sending an email.

File file = new File(selectedFilePath);
boolean deleted = file.delete();
where selectedFilePath is the path of the file you want to delete - for example:
/sdcard/YourCustomDirectory/ExampleFile.mp3

Also you have to give permission if you are using >1.6 SDK
uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
in AndroidManifest.xml file

Change for Android 4.4+
Apps are not allowed to write (delete, modify ...) to external storage except to their package-specific directories.
As Android documentation states:
"Apps must not be allowed to write to secondary external storage
devices, except in their package-specific directories as allowed by
synthesized permissions."
However nasty workaround exists (see code below). Tested on Samsung Galaxy S4, but this fix does't work on all devices. Also I wouldn’t count on this workaround being available in future versions of Android.
There is a great article explaining (4.4+) external storage permissions change.
You can read more about workaround here.
Workaround source code is from this site.
public class MediaFileFunctions
{
#TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static boolean deleteViaContentProvider(Context context, String fullname)
{
Uri uri=getFileUri(context,fullname);
if (uri==null)
{
return false;
}
try
{
ContentResolver resolver=context.getContentResolver();
// change type to image, otherwise nothing will be deleted
ContentValues contentValues = new ContentValues();
int media_type = 1;
contentValues.put("media_type", media_type);
resolver.update(uri, contentValues, null, null);
return resolver.delete(uri, null, null) > 0;
}
catch (Throwable e)
{
return false;
}
}
#TargetApi(Build.VERSION_CODES.HONEYCOMB)
private static Uri getFileUri(Context context, String fullname)
{
// Note: check outside this class whether the OS version is >= 11
Uri uri = null;
Cursor cursor = null;
ContentResolver contentResolver = null;
try
{
contentResolver=context.getContentResolver();
if (contentResolver == null)
return null;
uri=MediaStore.Files.getContentUri("external");
String[] projection = new String[2];
projection[0] = "_id";
projection[1] = "_data";
String selection = "_data = ? "; // this avoids SQL injection
String[] selectionParams = new String[1];
selectionParams[0] = fullname;
String sortOrder = "_id";
cursor=contentResolver.query(uri, projection, selection, selectionParams, sortOrder);
if (cursor!=null)
{
try
{
if (cursor.getCount() > 0) // file present!
{
cursor.moveToFirst();
int dataColumn=cursor.getColumnIndex("_data");
String s = cursor.getString(dataColumn);
if (!s.equals(fullname))
return null;
int idColumn = cursor.getColumnIndex("_id");
long id = cursor.getLong(idColumn);
uri= MediaStore.Files.getContentUri("external",id);
}
else // file isn't in the media database!
{
ContentValues contentValues=new ContentValues();
contentValues.put("_data",fullname);
uri = MediaStore.Files.getContentUri("external");
uri = contentResolver.insert(uri,contentValues);
}
}
catch (Throwable e)
{
uri = null;
}
finally
{
cursor.close();
}
}
}
catch (Throwable e)
{
uri=null;
}
return uri;
}
}

Android Context has the following method:
public abstract boolean deleteFile (String name)
I believe this will do what you want with the right App premissions as listed above.

Recursively delete all children of the file ...
public static void DeleteRecursive(File fileOrDirectory) {
if (fileOrDirectory.isDirectory()) {
for (File child : fileOrDirectory.listFiles()) {
DeleteRecursive(child);
}
}
fileOrDirectory.delete();
}

This works for me: (Delete image from Gallery)
File file = new File(photoPath);
file.delete();
context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(new File(photoPath))));

public static boolean deleteDirectory(File path) {
// TODO Auto-generated method stub
if( path.exists() ) {
File[] files = path.listFiles();
for(int i=0; i<files.length; i++) {
if(files[i].isDirectory()) {
deleteDirectory(files[i]);
}
else {
files[i].delete();
}
}
}
return(path.delete());
}
This Code will Help you.. And In Android Manifest You have to get Permission to make modification..
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

Try this.
File file = new File(FilePath);
FileUtils.deleteDirectory(file);
from Apache Commons

Sorry: There is a mistake in my code before because of the site validation.
String myFile = "/Name Folder/File.jpg";
String myPath = Environment.getExternalStorageDirectory()+myFile;
File f = new File(myPath);
Boolean deleted = f.delete();
I think is clear...
First you must to know your file location.
Second,,, Environment.getExternalStorageDirectory() is a method who gets your app directory.
Lastly the class File who handle your file...

I had a similar issue with an application running on 4.4. What I did was sort of a hack.
I renamed the files and ignored them in my application.
ie.
File sdcard = Environment.getExternalStorageDirectory();
File from = new File(sdcard,"/ecatAgent/"+fileV);
File to = new File(sdcard,"/ecatAgent/"+"Delete");
from.renameTo(to);

This worked for me.
String myFile = "/Name Folder/File.jpg";
String my_Path = Environment.getExternalStorageDirectory()+myFile;
File f = new File(my_Path);
Boolean deleted = f.delete();

private boolean deleteFromExternalStorage(File file) {
String fileName = "/Music/";
String myPath= Environment.getExternalStorageDirectory().getAbsolutePath() + fileName;
file = new File(myPath);
System.out.println("fullPath - " + myPath);
if (file.exists() && file.canRead()) {
System.out.println(" Test - ");
file.delete();
return false; // File exists
}
System.out.println(" Test2 - ");
return true; // File not exists
}

You can delete a file as follow:
File file = new File("your sdcard path is here which you want to delete");
file.delete();
if (file.exists()){
file.getCanonicalFile().delete();
if (file.exists()){
deleteFile(file.getName());
}
}

File filedel = new File("/storage/sdcard0/Baahubali.mp3");
boolean deleted1 = filedel.delete();
Or, Try This:
String del="/storage/sdcard0/Baahubali.mp3";
File filedel2 = new File(del);
boolean deleted1 = filedel2.delete();