permission shit...

it's not really working thought...

Author: Skycoder42

Demo/Demo.pro

@@ -8,7 +8,8 @@ include(../vendor/vendor.pri)
 QPM_ROOT = $$_PRO_FILE_PWD_/../vendor
 include(../de_skycoder42_androidutils.pri)
 
-SOURCES += main.cpp
+SOURCES += main.cpp \
+    opener.cpp
 
 RESOURCES += qml.qrc
 
@@ -40,3 +41,6 @@ DISTFILES += \
 	android/build.gradle
 
 ANDROID_PACKAGE_SOURCE_DIR = $$PWD/android
+
+HEADERS += \
+    opener.h

Demo/android/AndroidManifest.xml

@@ -76,4 +76,5 @@
 
 <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
 	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+	<uses-permission android:name="android.permission.MANAGE_DOCUMENTS"/>
 </manifest>

Demo/main.cpp

@@ -2,6 +2,7 @@
 #include <QGuiApplication>
 #include <QQmlApplicationEngine>
 #include <QDebug>
+#include "opener.h"
 #ifdef Q_OS_ANDROID
 #include <contentdevice.h>
 #endif
@@ -11,6 +12,8 @@ int main(int argc, char *argv[])
 	QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
 	QGuiApplication app(argc, argv);
 
+	qmlRegisterType<Opener>("de.skycoder42.androidutils", 1, 0, "Opener");
+
 #ifdef Q_OS_ANDROID
 	QUrl url("file:///sdcard/temp/baum");
 	ContentDevice device(url);

Demo/main.qml

@@ -110,6 +110,19 @@ ApplicationWindow {
 						text: "Open file chooser"
 						onClicked: chooser.open()
 					}
+
+					Button {
+						id: editButton
+						text: "Display/Edit File"
+
+						Opener {
+							id: opener
+
+							onDataLoaded: console.log(data)
+						}
+
+						onClicked: opener.openFile(chooser.contentUrl)
+					}
 				}
 			}
 		}

Demo/opener.cpp

@@ -0,0 +1,35 @@
+#include "opener.h"
+#include <QFile>
+#ifdef Q_OS_ANDROID
+#include <contentdevice.h>
+#include <QtAndroid>
+#endif
+
+Opener::Opener(QObject *parent) :
+	QObject(parent)
+{}
+
+void Opener::openFile(const QUrl &file)
+{
+#ifdef Q_OS_ANDROID
+	ContentDevice device(QtAndroid::androidActivity(), file);
+#else
+	QFile device(file.toLocalFile());
+#endif
+	device.open(QIODevice::ReadOnly);
+	auto data = QString::fromUtf8(device.readAll());
+	device.close();
+	emit dataLoaded(data);
+}
+
+void Opener::saveFile(const QUrl &file, const QString &data)
+{
+#ifdef Q_OS_ANDROID
+	ContentDevice device(QtAndroid::androidActivity(), file);
+#else
+	QFile device(file.toLocalFile());
+#endif
+	device.open(QIODevice::WriteOnly);
+	device.write(data.toUtf8());
+	device.close();
+}

Demo/opener.h

@@ -0,0 +1,20 @@
+#ifndef OPENER_H
+#define OPENER_H
+
+#include <QObject>
+
+class Opener : public QObject
+{
+	Q_OBJECT
+public:
+	explicit Opener(QObject *parent = nullptr);
+
+public slots:
+	void openFile(const QUrl &file);
+	void saveFile(const QUrl &file, const QString &data);
+
+signals:
+	void dataLoaded(const QString &data);
+};
+
+#endif // OPENER_H

android/src/de/skycoder42/androidutils/FileChooser.java

@@ -6,12 +6,14 @@
 import android.net.Uri;
 import android.content.Context;
 import android.content.Intent;
+import android.content.ContentResolver;
 import android.app.Activity;
 import org.qtproject.qt5.android.QtNative;
 import androidnative.SystemDispatcher;
 
 public class FileChooser {
 	public static final int CHOOSE_CONTENT_ACTION = 0x1091c657;
+	public static final int CHOOSE_DOCUMENT_ACTION = 0x1091c658;
 
 	public static final String GET_CONTENT_MESSAGE = "AndroidUtils.FileChooser.getContent";
 	public static final String OPEN_DOCUMENT_MESSAGE = "AndroidUtils.FileChooser.openDocument";
@@ -26,13 +28,13 @@ public void onDispatched(String type , Map message) {
 							   (String)message.get("mime"),
 							   (Boolean)message.get("openable"),
 							   (Boolean)message.get("localOnly"),
-							   (Boolean)message.get("allowMultiple"));
+							   (Boolean)message.get("grantWrite"));
 				} else if (type.equals(OPEN_DOCUMENT_MESSAGE)) {
 					openDocument((String)message.get("title"),
 								 (String)message.get("mime"),
 								 (String)message.get("url"),
 								 (Boolean)message.get("openable"),
-								 (Boolean)message.get("allowMultiple"));
+								 (Boolean)message.get("grantWrite"));
 				} else if (type.equals(CREATE_DOCUMENT_MESSAGE)) {
 					createDocument((String)message.get("title"),
 								   (String)message.get("mime"),
@@ -48,17 +50,18 @@ public void onDispatched(String type , Map message) {
 		});
 	}
 
-	static private void getContent(final String title, String mime, boolean openable, boolean localOnly, boolean allowMultiple) {
+	static private void getContent(final String title, String mime, boolean openable, boolean localOnly, boolean grantWrite) {
 		final Activity activity = QtNative.activity();
 
 		final Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
 		intent.setType(mime);
+		intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+		if(grantWrite)
+			intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 		if(openable)
 			intent.addCategory(Intent.CATEGORY_OPENABLE);
 		if(localOnly)
 			intent.putExtra(Intent.EXTRA_LOCAL_ONLY, true);
-		if(allowMultiple)
-			intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
 
 		Runnable runnable = new Runnable () {
 			public void run() {
@@ -70,24 +73,26 @@ public void run() {
 		activity.runOnUiThread(runnable);
 	}
 
-	static private void openDocument(final String title, String mime, String url, boolean openable, boolean allowMultiple) {
+	static private void openDocument(final String title, String mime, String url, boolean openable, boolean grantWrite) {
 		final Activity activity = QtNative.activity();
 
 		final Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
 		intent.setType(mime);
+		intent.addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION);
+		intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+		if(grantWrite)
+			intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 		if(openable)
 			intent.addCategory(Intent.CATEGORY_OPENABLE);
 		//TODO add in Android O
 //		if(!url.isEmpty())
 //			intent.putExtra(Intent.EXTRA_INITIAL_URI, Uri.parse(url));
-		if(allowMultiple)
-			intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
 
 		Runnable runnable = new Runnable () {
 			public void run() {
 				activity.startActivityForResult(
 					Intent.createChooser(intent, title),
-					CHOOSE_CONTENT_ACTION);
+					CHOOSE_DOCUMENT_ACTION);
 			};
 		};
 		activity.runOnUiThread(runnable);
@@ -98,6 +103,9 @@ static private void createDocument(final String title, String mime, String url,
 
 		final Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
 		intent.setType(mime);
+		intent.addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION);
+		intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+		intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 		if(openable)
 			intent.addCategory(Intent.CATEGORY_OPENABLE);
 		//TODO add in Android O
@@ -110,17 +118,27 @@ static private void createDocument(final String title, String mime, String url,
 			public void run() {
 				activity.startActivityForResult(
 					Intent.createChooser(intent, title),
-					CHOOSE_CONTENT_ACTION);
+					CHOOSE_DOCUMENT_ACTION);
 			};
 		};
 		activity.runOnUiThread(runnable);
 	}
 
 	static private void onActivityResult(int requestCode, int resultCode, Intent data) {
-		if(requestCode == CHOOSE_CONTENT_ACTION) {
+		if(requestCode == CHOOSE_CONTENT_ACTION ||
+		   requestCode == CHOOSE_DOCUMENT_ACTION) {
 			Map reply = new HashMap();
 			if (resultCode == Activity.RESULT_OK) {
 				Uri uri = data.getData();
+
+				if(requestCode == CHOOSE_DOCUMENT_ACTION) {
+					Activity activity = QtNative.activity();
+					int takeFlags = data.getFlags() & (Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
+					activity.grantUriPermission(activity.getPackageName(), uri, takeFlags);
+					ContentResolver resolver = activity.getContentResolver();
+					resolver.takePersistableUriPermission(uri, takeFlags);
+				}
+
 				reply.put("uri", uri.toString());
 				reply.put("success", true);
 			} else

filechooser.cpp

@@ -7,7 +7,7 @@ FileChooser::FileChooser(QObject *parent) :
 	QObject(parent),
 	_title(),
 	_contentUrl(),
-	_type(GetContent),
+	_type(OpenDocument),
 	_mimeType(QStringLiteral("*/*")),
 	_flags(OpenableFlag)
 {
@@ -104,7 +104,7 @@ void FileChooser::open()
 			{"mime", _mimeType},
 			{"openable", _flags.testFlag(OpenableFlag)},
 			{"localOnly", _flags.testFlag(LocalOnlyFlag)},
-			{"allowMultiple", _flags.testFlag(AllowMultipleFlag)}
+			{"grantWrite", _flags.testFlag(AlwaysGrantWrite)}
 		};
 		break;
 	case FileChooser::OpenDocument:
@@ -114,7 +114,7 @@ void FileChooser::open()
 			{"mime", _mimeType},
 			{"url", _contentUrl.toString()},
 			{"openable", _flags.testFlag(OpenableFlag)},
-			{"allowMultiple", _flags.testFlag(AllowMultipleFlag)}
+			{"grantWrite", _flags.testFlag(AlwaysGrantWrite)}
 		};
 		break;
 	case FileChooser::CreateDocument:

filechooser.h

@@ -26,7 +26,7 @@ class FileChooser : public QObject
 	enum ChooserFlag {
 		OpenableFlag = 0x01,
 		LocalOnlyFlag = 0x02,
-		AllowMultipleFlag = 0x04
+		AlwaysGrantWrite = 0x04
 	};
 	Q_DECLARE_FLAGS(ChooserFlags, ChooserFlag)
 	Q_FLAG(ChooserFlags)