/**
* Delete a file. May be even on external SD card.
*
* @param file the file to be deleted.
* @return True if successfully deleted.
*/
public static final boolean deleteFile(@NonNull final File file, Context context) {
// First try the normal deletion.
boolean fileDelete = deleteFilesInFolder(file, context);
if (file.delete() || fileDelete) return true;
// Try with Storage Access Framework.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP
&& FileUtil.isOnExtSdCard(file, context)) {
DocumentFile document = getDocumentFile(file, false, context);
return document.delete();
}
// Try the Kitkat workaround.
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
ContentResolver resolver = context.getContentResolver();
try {
Uri uri = MediaStoreUtil.getUriFromFile(file.getAbsolutePath(), context);
resolver.delete(uri, null, null);
return !file.exists();
} catch (Exception e) {
Log.e("AmazeFileUtils", "Error when deleting file " + file.getAbsolutePath(), e);
return false;
}
}
return !file.exists();
}
/**
* Copy a file. The target file may even be on external SD card for Kitkat.
*
* @param source The source file
* @param target The target file
* @return true if the copying was successful.
*/
@SuppressWarnings("null")
public static boolean copyFile(final File source, final File target, Context context) {
FileInputStream inStream = null;
OutputStream outStream = null;
FileChannel inChannel = null;
FileChannel outChannel = null;
try {
inStream = new FileInputStream(source);
// First try the normal way
if (isWritable(target)) {
// standard way
outStream = new FileOutputStream(target);
inChannel = inStream.getChannel();
outChannel = ((FileOutputStream) outStream).getChannel();
inChannel.transferTo(0, inChannel.size(), outChannel);
} else {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
// Storage Access Framework
DocumentFile targetDocument = getDocumentFile(target, false, context);
outStream = context.getContentResolver().openOutputStream(targetDocument.getUri());
} else if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
// Workaround for Kitkat ext SD card
Uri uri = MediaStoreUtil.getUriFromFile(target.getAbsolutePath(), context);
outStream = context.getContentResolver().openOutputStream(uri);
} else {
return false;
}
if (outStream != null) {
// Both for SAF and for Kitkat, write to output stream.
byte[] buffer = new byte[16384]; // MAGIC_NUMBER
int bytesRead;
while ((bytesRead = inStream.read(buffer)) != -1) {
outStream.write(buffer, 0, bytesRead);
}
}
}
} catch (Exception e) {
Log.e(
"AmazeFileUtils",
"Error when copying file from "
+ source.getAbsolutePath()
+ " to "
+ target.getAbsolutePath(),
e);
return false;
} finally {
try {
inStream.close();
} catch (Exception e) {
// ignore exception
}
try {
outStream.close();
} catch (Exception e) {
// ignore exception
}
try {
inChannel.close();
} catch (Exception e) {
// ignore exception
}
try {
outChannel.close();
} catch (Exception e) {
// ignore exception
}
}
return true;
}
