/**
* Get a DocumentFile corresponding to the given file (for writing on ExtSdCard on Android 5). If
* the file is not existing, it is created.
*
* @param file The file.
* @param isDirectory flag indicating if the file should be a directory.
* @return The DocumentFile
*/
public static DocumentFile getDocumentFile(
final File file, final boolean isDirectory, Context context) {
String baseFolder = getExtSdCardFolder(file, context);
boolean originalDirectory = false;
if (baseFolder == null) {
return null;
}
String relativePath = null;
try {
String fullPath = file.getCanonicalPath();
if (!baseFolder.equals(fullPath)) relativePath = fullPath.substring(baseFolder.length() + 1);
else originalDirectory = true;
} catch (IOException e) {
return null;
} catch (Exception f) {
originalDirectory = true;
// continue
}
String as = PreferenceManager.getDefaultSharedPreferences(context).getString("URI", null);
Uri treeUri = null;
if (as != null) treeUri = Uri.parse(as);
if (treeUri == null) {
return null;
}
// start with root of SD card and then parse through document tree.
DocumentFile document = DocumentFile.fromTreeUri(context, treeUri);
if (originalDirectory) return document;
String[] parts = relativePath.split("\\/");
for (int i = 0; i < parts.length; i++) {
DocumentFile nextDocument = document.findFile(parts[i]);
if (nextDocument == null) {
if ((i < parts.length - 1) || isDirectory) {
nextDocument = document.createDirectory(parts[i]);
} else {
nextDocument = document.createFile("image", parts[i]);
}
}
document = nextDocument;
}
return document;
}
public static boolean mkfile(final File file, Context context) throws IOException {
if (file == null) return false;
if (file.exists()) {
// nothing to create.
return !file.isDirectory();
}
// Try the normal way
try {
if (file.createNewFile()) {
return true;
}
} catch (IOException e) {
e.printStackTrace();
}
boolean b = true;
// Try with Storage Access Framework.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP
&& FileUtil.isOnExtSdCard(file, context)) {
DocumentFile document = getDocumentFile(file.getParentFile(), true, context);
// getDocumentFile implicitly creates the directory.
try {
b = document.createFile(MimeTypes.getMimeType(file), file.getName()) != null;
return b;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
if (Build.VERSION.SDK_INT == Build.VERSION_CODES.KITKAT) {
try {
return MediaStoreHack.mkfile(context, file);
} catch (Exception e) {
return false;
}
}
return false;
}
