added android file dialog

SoundBand/SoundBand.pro

@@ -1,5 +1,7 @@
 QT += quick core gui network multimedia sql
-CONFIG += c++11
+android: QT += androidextras
+mac: QT += macextras
+CONFIG += c++14
 
 # The following define makes your compiler emit warnings if you use
 # any feature of Qt which as been marked deprecated (the exact warnings
@@ -23,7 +25,8 @@ SOURCES += main.cpp \
     ../sync/song.cpp \
     ../sync/sync.cpp \
     ../sync/Log.cpp\
-    ../sync/exaptions.cpp
+    ../sync/exaptions.cpp \
+    androidfiledialog.cpp
 
 
 RESOURCES += qml.qrc
@@ -53,5 +56,6 @@ HEADERS += \
     ../sync/player.h \
     ../sync/song.h \
     ../sync/sync.h \
-    ../sync/Log.h
+    ../sync/Log.h \
+    androidfiledialog.h
 

SoundBand/androidfiledialog.cpp

@@ -0,0 +1,63 @@
+#ifdef Q_OS_ANDROID
+
+#include "androidfiledialog.h"
+
+AndroidFileDialog::ResultReceiver::ResultReceiver(AndroidFileDialog *dialog) : _dialog(dialog) {}
+AndroidFileDialog::ResultReceiver::~ResultReceiver() {}
+
+void AndroidFileDialog::ResultReceiver::handleActivityResult(int receiverRequestCode, int resultCode, const QAndroidJniObject &data)
+{
+    jint RESULT_OK = QAndroidJniObject::getStaticField<jint>("android/app/Activity", "RESULT_OK");
+    if (receiverRequestCode == EXISTING_FILE_NAME_REQUEST && resultCode == RESULT_OK) {
+        QAndroidJniObject uri = data.callObjectMethod("getData", "()Landroid/net/Uri;");
+        QString path = uriToPath(uri);
+        _dialog->emitExistingFileNameReady(path);
+    } else {
+        _dialog->emitExistingFileNameReady(QString());
+    }
+}
+
+QString AndroidFileDialog::ResultReceiver::uriToPath(QAndroidJniObject uri)
+{
+    if (uri.toString().startsWith("file:", Qt::CaseInsensitive)) {
+        return uri.callObjectMethod("getPath", "()Ljava/lang/String;").toString();
+    } else {
+        QAndroidJniObject contentResolver = QtAndroid::androidActivity().callObjectMethod("getContentResolver", "()Landroid/content/ContentResolver;");
+        QAndroidJniObject cursor = contentResolver.callObjectMethod("query", "(Landroid/net/Uri;[Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)Landroid/database/Cursor;", uri.object<jobject>(), 0, 0, 0, 0);
+        QAndroidJniObject DATA = QAndroidJniObject::fromString("_data");
+        jint columnIndex = cursor.callMethod<jint>("getColumnIndexOrThrow", "(Ljava/lang/String;)I", DATA.object<jstring>());
+        cursor.callMethod<jboolean>("moveToFirst", "()Z");
+        QAndroidJniObject result = cursor.callObjectMethod("getString", "(I)Ljava/lang/String;", columnIndex);
+        return result.isValid() ? result.toString() : QString();
+    }
+}
+
+AndroidFileDialog::AndroidFileDialog(QObject *parent) : QObject(parent)
+{
+    receiver = new ResultReceiver(this);
+}
+
+AndroidFileDialog::~AndroidFileDialog()
+{
+    delete receiver;
+}
+
+bool AndroidFileDialog::provideExistingFileName()
+{
+    QAndroidJniObject ACTION_GET_CONTENT = QAndroidJniObject::fromString("android.intent.action.GET_CONTENT");
+    QAndroidJniObject intent("android/content/Intent");
+    if (ACTION_GET_CONTENT.isValid() && intent.isValid()) {
+        intent.callObjectMethod("setAction", "(Ljava/lang/String;)Landroid/content/Intent;", ACTION_GET_CONTENT.object<jstring>());
+        intent.callObjectMethod("setType", "(Ljava/lang/String;)Landroid/content/Intent;", QAndroidJniObject::fromString("file/*").object<jstring>());
+        QtAndroid::startActivity(intent.object<jobject>(), EXISTING_FILE_NAME_REQUEST, receiver);
+        return true;
+    } else {
+        return false;
+    }
+}
+
+void AndroidFileDialog::emitExistingFileNameReady(QString result)
+{
+    emit existingFileNameReady(result);
+}
+#endif // Q_OS_ANDROID

SoundBand/androidfiledialog.h

@@ -0,0 +1,42 @@
+#ifndef FILEDIALOG_H
+#define FILEDIALOG_H
+
+#ifdef Q_OS_ANDROID
+#ifndef ANDROIDFILEDIALOG_H
+#define ANDROIDFILEDIALOG_H
+
+#include <QObject>
+#include <QAndroidJniObject>
+#include <QtAndroid>
+#include <QAndroidActivityResultReceiver>
+
+class AndroidFileDialog : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit AndroidFileDialog(QObject *parent = 0);
+    virtual ~AndroidFileDialog();
+    bool provideExistingFileName();
+
+private:
+    class ResultReceiver : public QAndroidActivityResultReceiver {
+        AndroidFileDialog *_dialog;
+    public:
+        ResultReceiver(AndroidFileDialog *dialog);
+        virtual ~ResultReceiver();
+        void handleActivityResult(int receiverRequestCode, int resultCode, const QAndroidJniObject &data);
+        QString uriToPath(QAndroidJniObject uri);
+    };
+
+    static const int EXISTING_FILE_NAME_REQUEST = 1;
+    ResultReceiver *receiver;
+    void emitExistingFileNameReady(QString result);
+
+signals:
+    void existingFileNameReady(QString result);
+};
+
+#endif // ANDROIDFILEDIALOG_H
+
+#endif // Q_OS_ANDROID