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Android: Add support for folder dialogs

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This commit is contained in:
crudelios
2026-05-13 17:50:42 +01:00
committed by Sam Lantinga
parent de08751537
commit 439ffd13eb
5 changed files with 138 additions and 52 deletions
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111
android-project/app/src/main/java/org/libsdl/app/SDLActivity.java
View File

@@ -26,6 +26,7 @@ import android.os.Handler;
import android.os.LocaleList;
import android.os.Message;
import android.os.ParcelFileDescriptor;
import android.provider.DocumentsContract;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.SparseArray;
@@ -744,6 +745,11 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
}
}
// File dialog types
private static final int SDL_FILEDIALOG_OPENFILE = 0;
private static final int SDL_FILEDIALOG_SAVEFILE = 1;
private static final int SDL_FILEDIALOG_OPENFOLDER = 2;
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
@@ -752,7 +758,7 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
/* This is our file dialog */
String[] filelist = null;
if (data != null) {
if (data != null && resultCode == Activity.RESULT_OK) {
Uri singleFileUri = data.getData();
if (singleFileUri == null) {
@@ -767,6 +773,13 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
filelist[i] = uri;
}
} else {
/* If the user selected a directory and the persistent permission hint has been set,
make the permission persistable */
if (mFileDialogState.type == SDL_FILEDIALOG_OPENFOLDER && mFileDialogState.persistable) {
mSingleton.getContentResolver().takePersistableUriPermission(singleFileUri,
Intent.FLAG_GRANT_READ_URI_PERMISSION |
Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
}
/* Only one file is selected. */
filelist = new String[]{singleFileUri.toString()};
}
@@ -2099,19 +2112,16 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
/**
* This method is called by SDL using JNI.
*/
public static boolean showFileDialog(String[] filters, boolean allowMultiple, boolean forWrite, int requestCode) {
public static boolean showFileDialog(String[] filters, boolean allowMultiple,
int type, String initialPath, int requestCode) {
if (mSingleton == null) {
return false;
}
if (forWrite) {
allowMultiple = false;
}
/* Convert string list of extensions to their respective MIME types */
/* Convert string list of extensions to their respective MIME types (not needed for folder selection) */
ArrayList<String> mimes = new ArrayList<>();
MimeTypeMap mimeTypeMap = MimeTypeMap.getSingleton();
if (filters != null) {
if (filters != null && type != SDL_FILEDIALOG_OPENFOLDER) {
for (String pattern : filters) {
String[] extensions = pattern.split(";");
@@ -2129,40 +2139,89 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
}
}
/* Display the file dialog */
Intent intent = new Intent(forWrite ? Intent.ACTION_CREATE_DOCUMENT : Intent.ACTION_OPEN_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, allowMultiple);
switch (mimes.size()) {
case 0:
intent.setType("*/*");
break;
case 1:
intent.setType(mimes.get(0));
break;
default:
intent.setType("*/*");
intent.putExtra(Intent.EXTRA_MIME_TYPES, mimes.toArray(new String[]{}));
/* Handle the initial path, if set */
Uri initialPathUri = null;
if (initialPath != null && !initialPath.isEmpty()) {
try {
initialPathUri = Uri.parse(initialPath);
} catch (Exception e) {
Log.e(TAG, "Failed to parse initial path URI, ignoring initial path", e);
}
}
boolean persistable = SDLActivity.nativeGetHintBoolean("SDL_ANDROID_ALLOW_PERSISTENT_FOLDER_ACCESS", false);
/* Select the intent based on the type */
String action;
switch (type) {
case SDL_FILEDIALOG_OPENFILE:
action = Intent.ACTION_OPEN_DOCUMENT;
break;
case SDL_FILEDIALOG_SAVEFILE:
action = Intent.ACTION_CREATE_DOCUMENT;
allowMultiple = false;
break;
case SDL_FILEDIALOG_OPENFOLDER:
action = Intent.ACTION_OPEN_DOCUMENT_TREE;
break;
default:
Log.e(TAG, "Unsupported file dialog type: " + type);
return false;
}
/* Prepare the intent with the proper values */
Intent intent = new Intent(action);
if (type != SDL_FILEDIALOG_OPENFOLDER) {
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, allowMultiple);
switch (mimes.size()) {
case 0:
intent.setType("*/*");
break;
case 1:
intent.setType(mimes.get(0));
break;
default:
intent.setType("*/*");
intent.putExtra(Intent.EXTRA_MIME_TYPES, mimes.toArray(new String[]{}));
}
} else {
int intent_flags = Intent.FLAG_GRANT_READ_URI_PERMISSION |
Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
if (persistable) {
intent_flags |= Intent.FLAG_GRANT_PREFIX_URI_PERMISSION |
Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION;
}
intent.addFlags(intent_flags);
}
if (initialPathUri != null) {
intent.putExtra(DocumentsContract.EXTRA_INITIAL_URI, initialPathUri);
}
/* Display the file/folder dialog */
try {
mSingleton.startActivityForResult(intent, requestCode);
} catch (ActivityNotFoundException e) {
Log.e(TAG, "Unable to open file dialog.", e);
Log.e(TAG, "Unable to open dialog.", e);
return false;
}
/* Save current dialog state */
mFileDialogState = new SDLFileDialogState();
mFileDialogState.requestCode = requestCode;
mFileDialogState.multipleChoice = allowMultiple;
mFileDialogState.type = type;
mFileDialogState.persistable = persistable;
return true;
}
/* Internal class used to track active open file dialog */
/* Internal class used to track active file dialog */
static class SDLFileDialogState {
int requestCode;
boolean multipleChoice;
int type;
boolean persistable;
}
/**