Java Android的Qt-startActivityForResult等效项不起作用

Qt for Android中有一些文档记录不完整的功能——我们可以通过JNI（Java本机接口）使用Intent功能。有一些例子与startActivity等效，但我没有发现任何结果接收

下面是Java代码，说明了我想做什么：

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("file/*");
getActivity().startActivityForResult(intent, 1);

我使用文档编写了Qt中的等效代码：

QAndroidJniObject ACTION_GET_CONTENT = QAndroidJniObject::getStaticObjectField<jstring>("android/content/Intent", "ACTION_GET_CONTENT");
QAndroidJniObject intent("android/content/Intent");
if (ACTION_GET_CONTENT.isValid() && intent.isValid()) {
    intent.callObjectMethod("setAction", "(Ljava/lang/string;)V", ACTION_GET_CONTENT.object<jstring>());
    intent.callObjectMethod("setType", "(Ljava/lang/string;)V", QAndroidJniObject::fromString("file/*").object<jstring>());
    QtAndroid::startActivity(intent, EXISTING_FILE_NAME_REQUEST, receiver);
    return true;
} else {
    return false;
}

QAndroidJniObject ACTION_GET_CONTENT=QAndroidJniObject:：getStaticObjectField（“android/CONTENT/Intent”，“ACTION_GET_CONTENT”）； QAndroidJniObject意图（“安卓/内容/意图”）； if（ACTION_GET_CONTENT.isValid（）&&intent.isValid（））{ callObjectMethod（“setAction”，“（Ljava/lang/string；）V”，ACTION\u GET\u CONTENT.object（））； intent.callObjectMethod（“setType”，“（Ljava/lang/string；）V”，QAndroidJniObject:：fromString（“file/*”）.object（）； QtAndroid:：startActivity（意图、现有文件名、请求、接收者）； 返回true； }否则{ 返回false； } receiver是指向类的对象的指针，它扩展了抽象类QAndroidActivityResultReceiver。以下是虚拟函数handleActivityResult的实现：

void MyReceiver::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) {
        QString path = data.callObjectMethod("getData", "()Landroid/net/Uri;").callObjectMethod("getPath", "()Ljava/lang/String;").toString();
        _dialog->emitExistingFileNameReady(path);
    } else {
        _dialog->emitExistingFileNameReady(QString());
    }
}

void MyReceiver:：handleActivityResult（int-receiverRequestCode、int-resultCode、const-QAndroidJniObject和data）
{
jint RESULT_OK=QAndroidJniObject:：getStaticField（“android/app/Activity”，“RESULT_OK”）；
如果（receiverRequestCode==现有文件名\请求和结果代码==结果\确定）{
QString path=data.callObjectMethod（“getData”、“（）Landroid/net/Uri；””）.callObjectMethod（“getPath”、“（）Ljava/lang/String；””）.toString（）；
_对话框->emitExistingFileNameReady（路径）；
}否则{
_对话框->emitExistingFileNameReady（QString（））；
}
}

我的代码有问题，因为当我运行它时，会出现以下错误消息（程序正在中止）：

F/art（6837）：art/runtime/check_jni.cc:65]jni在应用程序中检测到错误：调用jni NewGlobalRef时出现挂起的异常“android.content.ActivityNotFoundException”，抛出位置未知
F/art（6837）：调用NewGlobalRef时的art/runtime/checkjni.cc:65]
F/art（6837）：art/runtime/check_jni.cc:65]“QtThread”prio=5 tid=15 Runnable
F/art（6837）：art/runtime/check_jni.cc:65]| group=“main”scont=0 dsCount=0 obj=0x12e75100 self=0xaec43400
F/art（6837）：art/runtime/check_jni.cc:65]| sysTid=6882 nice=0 cgrp=default sched=0/0 handle=0xb491b780
F/art（6837）：art/runtime/check_jni.cc:65]| state=R schedstat=（0 0 0）utm=39 stm=20 core=0 HZ=100
F/art（6837）：art/runtime/check_jni.cc:65]| stack=0xa2b04000-0xa2b06000 stackSize=1012KB
F/art（6837）：art/runtime/check_jni.cc:65]|保持互斥体=“mutator lock”（共享保持）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#00 pc 00004e64/system/lib/libbacktrace_libc++.so（UnwindCurrent:：Unwind（unsigned int，ucontext*）+23）
F/art（6837）：art/runtime/check_jni.cc:65]native:#01 pc 00003665/system/lib/libbacktrace_libc++.so（Backtrace:：Unwind（unsigned int，ucontext*）+8）
F/art（6837）：art/runtime/check_jni.cc:65]native:#02 pc 00256429/system/lib/libart.so（art:：DumpNativeStack（std:uu 1:：basic_ostream&，int，char const*，art:：mirror:：ArtMethod*）+84）
F/art（6837）：art/runtime/check_jni.cc:65]native:#03 pc 00238fe7/system/lib/libart.so（art:：Thread:：Dump（std:uu 1:：basic_ostream&）const+158）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#04 pc 000b191b/system/lib/libart.so（art:：jnibort（char const*，char const*）+610）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#05 pc 000b2055/system/lib/libart.so（art:：jnibortf（char const*，char const*，…）+68）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#06 pc 000b530f/system/lib/libart.so（art:：ScopedCheck:：ScopedCheck（_JNIEnv*，int，char const*）+1346）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#07 pc 000b66cd/system/lib/libart.so（art:：CheckJNI:：NewGlobalRef（_JNIEnv*，_jobject*）+28）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#08 pc 001ea0a7/data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so（QJNIObjectPrivate:：QJNIObjectPrivate（_jobject*）+82）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#09 pc 001ea69d/data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so（？）
F/art（6837）：art/runtime/check_jni.cc:65]native:#10 pc 001ec719/data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so（QJNIObjectPrivate:：getStaticObjectField（char const*，char const*，char const*）+48）
F/art（6837）：art/runtime/check_jni.cc:65]native:#11 pc 0017718d/data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so（？）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#12 pc 00177a3d/data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so（qstandardpath:：writeablelocation（qstandardpath:：standardplocation）+860）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#13 pc 0017841f/data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so（qstandardpath:：standardpath:：standardplocation）+790）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#14 pc 00013e5b/data/app/org.qtproject.example.TouchImage-2/lib/arm/libTouchImage.so（ApplicationController:：openFileButtonClicked（）+130）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#15 pc 001cce4f/data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so（QMetaObject:：activate（QObject*，int，int，void**）+394）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#16 pc 00261987/data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so（QAbstractButton:：clicked（bool）+26）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#17 pc 001460f9/data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so（？）
F/art（6837）：art/runtime/check_jni.cc:65]本机：#18 pc 001468f7/data/app/org。
F/art     ( 6837): art/runtime/check_jni.cc:65] JNI DETECTED ERROR IN APPLICATION: JNI NewGlobalRef called with pending exception 'android.content.ActivityNotFoundException' thrown in unknown throw location
F/art     ( 6837): art/runtime/check_jni.cc:65]     in call to NewGlobalRef
F/art     ( 6837): art/runtime/check_jni.cc:65] "QtThread" prio=5 tid=15 Runnable
F/art     ( 6837): art/runtime/check_jni.cc:65]   | group="main" sCount=0 dsCount=0 obj=0x12e75100 self=0xaec43400
F/art     ( 6837): art/runtime/check_jni.cc:65]   | sysTid=6882 nice=0 cgrp=default sched=0/0 handle=0xb491b780
F/art     ( 6837): art/runtime/check_jni.cc:65]   | state=R schedstat=( 0 0 0 ) utm=39 stm=20 core=0 HZ=100
F/art     ( 6837): art/runtime/check_jni.cc:65]   | stack=0xa2b04000-0xa2b06000 stackSize=1012KB
F/art     ( 6837): art/runtime/check_jni.cc:65]   | held mutexes= "mutator lock"(shared held)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #00 pc 00004e64  /system/lib/libbacktrace_libc++.so (UnwindCurrent::Unwind(unsigned int, ucontext*)+23)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #01 pc 00003665  /system/lib/libbacktrace_libc++.so (Backtrace::Unwind(unsigned int, ucontext*)+8)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #02 pc 00256429  /system/lib/libart.so (art::DumpNativeStack(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, int, char const*, art::mirror::ArtMethod*)+84)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #03 pc 00238fe7  /system/lib/libart.so (art::Thread::Dump(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) const+158)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #04 pc 000b191b  /system/lib/libart.so (art::JniAbort(char const*, char const*)+610)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #05 pc 000b2055  /system/lib/libart.so (art::JniAbortF(char const*, char const*, ...)+68)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #06 pc 000b530f  /system/lib/libart.so (art::ScopedCheck::ScopedCheck(_JNIEnv*, int, char const*)+1346)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #07 pc 000b66cd  /system/lib/libart.so (art::CheckJNI::NewGlobalRef(_JNIEnv*, _jobject*)+28)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #08 pc 001ea0a7  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QJNIObjectPrivate::QJNIObjectPrivate(_jobject*)+82)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #09 pc 001ea69d  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (???)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #10 pc 001ec719  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QJNIObjectPrivate::getStaticObjectField(char const*, char const*, char const*)+48)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #11 pc 0017718d  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (???)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #12 pc 00177a3d  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QStandardPaths::writableLocation(QStandardPaths::StandardLocation)+860)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #13 pc 0017841f  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QStandardPaths::standardLocations(QStandardPaths::StandardLocation)+790)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #14 pc 00013e5b  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libTouchImage.so (ApplicationController::openFileButtonClicked()+130)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #15 pc 001cce4f  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QMetaObject::activate(QObject*, int, int, void**)+394)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #16 pc 00261987  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QAbstractButton::clicked(bool)+26)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #17 pc 001460f9  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (???)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #18 pc 001468f7  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (???)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #19 pc 00146979  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QAbstractButton::mouseReleaseEvent(QMouseEvent*)+88)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #20 pc 0019d509  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QToolButton::mouseReleaseEvent(QMouseEvent*)+4)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #21 pc 00100bbd  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QWidget::event(QEvent*)+536)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #22 pc 0019d57d  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QToolButton::event(QEvent*)+50)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #23 pc 000e2a41  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QApplicationPrivate::notify_helper(QObject*, QEvent*)+104)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #24 pc 000e5583  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QApplication::notify(QObject*, QEvent*)+1382)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #25 pc 001ae40f  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QCoreApplication::notifyInternal(QObject*, QEvent*)+62)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #26 pc 000e4d5b  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool)+286)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #27 pc 0010a19b  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (???)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #28 pc 0010a8d3  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (???)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #29 pc 000e2a41  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QApplicationPrivate::notify_helper(QObject*, QEvent*)+104)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #30 pc 000e5e53  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QApplication::notify(QObject*, QEvent*)+3638)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #31 pc 001ae40f  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QCoreApplication::notifyInternal(QObject*, QEvent*)+62)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #32 pc 000a09cd  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Gui.so (QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)+516)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #33 pc 000a06ed  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Gui.so (QGuiApplicationPrivate::processTouchEvent(QWindowSystemInterfacePrivate::TouchEvent*)+3492)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #34 pc 000a1b13  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Gui.so (QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)+382)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #35 pc 00093181  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Gui.so (QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)+20)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #36 pc 00028135  /data/data/org.qtproject.example.TouchImage/qt-reserved-files/plugins/platforms/android/libqtforandroid.so (???)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #37 pc 001ad533  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)+14)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #38 pc 001adc13  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)+226)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #39 pc 001b2527  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QCoreApplication::exec()+82)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #40 pc 00012a41  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libTouchImage.so (main+48)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #41 pc 000190b5  /data/data/org.qtproject.example.TouchImage/qt-reserved-files/plugins/platforms/android/libqtforandroid.so (???)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #42 pc 00016baf  /system/lib/libc.so (__pthread_start(void*)+30)
F/art     ( 6837): art/runtime/check_jni.cc:65]   native: #43 pc 00014af3  /system/lib/libc.so (__start_thread+6)
F/art     ( 6837): art/runtime/check_jni.cc:65]   (no managed stack frames)
F/art     ( 6837): art/runtime/check_jni.cc:65] 
F/art     ( 6837): art/runtime/runtime.cc:289] Runtime aborting...
F/art     ( 6837): art/runtime/runtime.cc:289] Aborting thread:
F/art     ( 6837): art/runtime/runtime.cc:289] "QtThread" prio=5 tid=15 Native
F/art     ( 6837): art/runtime/runtime.cc:289]   | group="" sCount=0 dsCount=0 obj=0x12e75100 self=0xaec43400
F/art     ( 6837): art/runtime/runtime.cc:289]   | sysTid=6882 nice=0 cgrp=default sched=0/0 handle=0xb491b780
F/art     ( 6837): art/runtime/runtime.cc:289]   | state=R schedstat=( 0 0 0 ) utm=42 stm=20 core=0 HZ=100
F/art     ( 6837): art/runtime/runtime.cc:289]   | stack=0xa2b04000-0xa2b06000 stackSize=1012KB
F/art     ( 6837): art/runtime/runtime.cc:289]   | held mutexes= "abort lock" "mutator lock"(shared held)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #00 pc 00004e64  /system/lib/libbacktrace_libc++.so (UnwindCurrent::Unwind(unsigned int, ucontext*)+23)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #01 pc 00003665  /system/lib/libbacktrace_libc++.so (Backtrace::Unwind(unsigned int, ucontext*)+8)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #02 pc 00256429  /system/lib/libart.so (art::DumpNativeStack(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, int, char const*, art::mirror::ArtMethod*)+84)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #03 pc 00238fe7  /system/lib/libart.so (art::Thread::Dump(std::__1::basic_ostream<char, std::__1::char_traits<char> >&) const+158)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #04 pc 0022881d  /system/lib/libart.so (art::AbortState::DumpThread(std::__1::basic_ostream<char, std::__1::char_traits<char> >&, art::Thread*)+32)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #05 pc 00228abf  /system/lib/libart.so (art::AbortState::Dump(std::__1::basic_ostream<char, std::__1::char_traits<char> >&)+410)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #06 pc 00228c7f  /system/lib/libart.so (art::Runtime::Abort()+82)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #07 pc 000a7371  /system/lib/libart.so (art::LogMessage::~LogMessage()+1360)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #08 pc 000b1b17  /system/lib/libart.so (art::JniAbort(char const*, char const*)+1118)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #09 pc 000b2055  /system/lib/libart.so (art::JniAbortF(char const*, char const*, ...)+68)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #10 pc 000b530f  /system/lib/libart.so (art::ScopedCheck::ScopedCheck(_JNIEnv*, int, char const*)+1346)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #11 pc 000b66cd  /system/lib/libart.so (art::CheckJNI::NewGlobalRef(_JNIEnv*, _jobject*)+28)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #12 pc 001ea0a7  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QJNIObjectPrivate::QJNIObjectPrivate(_jobject*)+82)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #13 pc 001ea69d  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (???)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #14 pc 001ec719  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QJNIObjectPrivate::getStaticObjectField(char const*, char const*, char const*)+48)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #15 pc 0017718d  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (???)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #16 pc 00177a3d  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QStandardPaths::writableLocation(QStandardPaths::StandardLocation)+860)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #17 pc 0017841f  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QStandardPaths::standardLocations(QStandardPaths::StandardLocation)+790)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #18 pc 00013e5b  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libTouchImage.so (ApplicationController::openFileButtonClicked()+130)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #19 pc 001cce4f  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QMetaObject::activate(QObject*, int, int, void**)+394)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #20 pc 00261987  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QAbstractButton::clicked(bool)+26)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #21 pc 001460f9  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (???)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #22 pc 001468f7  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (???)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #23 pc 00146979  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QAbstractButton::mouseReleaseEvent(QMouseEvent*)+88)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #24 pc 0019d509  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QToolButton::mouseReleaseEvent(QMouseEvent*)+4)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #25 pc 00100bbd  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QWidget::event(QEvent*)+536)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #26 pc 0019d57d  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QToolButton::event(QEvent*)+50)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #27 pc 000e2a41  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QApplicationPrivate::notify_helper(QObject*, QEvent*)+104)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #28 pc 000e5583  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QApplication::notify(QObject*, QEvent*)+1382)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #29 pc 001ae40f  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QCoreApplication::notifyInternal(QObject*, QEvent*)+62)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #30 pc 000e4d5b  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool)+286)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #31 pc 0010a19b  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (???)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #32 pc 0010a8d3  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (???)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #33 pc 000e2a41  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QApplicationPrivate::notify_helper(QObject*, QEvent*)+104)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #34 pc 000e5e53  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Widgets.so (QApplication::notify(QObject*, QEvent*)+3638)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #35 pc 001ae40f  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QCoreApplication::notifyInternal(QObject*, QEvent*)+62)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #36 pc 000a09cd  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Gui.so (QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)+516)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #37 pc 000a06ed  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Gui.so (QGuiApplicationPrivate::processTouchEvent(QWindowSystemInterfacePrivate::TouchEvent*)+3492)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #38 pc 000a1b13  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Gui.so (QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)+382)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #39 pc 00093181  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Gui.so (QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)+20)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #40 pc 00028135  /data/data/org.qtproject.example.TouchImage/qt-reserved-files/plugins/platforms/android/libqtforandroid.so (???)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #41 pc 001ad533  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)+14)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #42 pc 001adc13  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)+226)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #43 pc 001b2527  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libQt5Core.so (QCoreApplication::exec()+82)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #44 pc 00012a41  /data/app/org.qtproject.example.TouchImage-2/lib/arm/libTouchImage.so (main+48)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #45 pc 000190b5  /data/data/org.qtproject.example.TouchImage/qt-reserved-files/plugins/platforms/android/libqtforandroid.so (???)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #46 pc 00016baf  /system/lib/libc.so (__pthread_start(void*)+30)
F/art     ( 6837): art/runtime/runtime.cc:289]   native: #47 pc 00014af3  /system/lib/libc.so (__start_thread+6)
F/art     ( 6837): art/runtime/runtime.cc:289]   (no managed stack frames)
F/art     ( 6837): art/runtime/runtime.cc:289] Pending exception android.content.ActivityNotFoundException thrown by 'unknown throw location'
F/art     ( 6837): art/runtime/runtime.cc:289] android.content.ActivityNotFoundException: No Activity found to handle Intent {  }
F/art     ( 6837): art/runtime/runtime.cc:289]   at void android.app.Instrumentation.checkStartActivityResult(int, java.lang.Object) (Instrumentation.java:1781)
F/art     ( 6837): art/runtime/runtime.cc:289]   at android.app.Instrumentation$ActivityResult android.app.Instrumentation.execStartActivity(android.content.Context, android.os.IBinder, android.os.IBinder, android.app.Activity, android.content.Intent, int, android.os.Bundle) (Instrumentation.java:1501)
F/art     ( 6837): art/runtime/runtime.cc:289]   at void android.app.Activity.startActivityForResult(android.content.Intent, int, android.os.Bundle) (Activity.java:3745)
F/art     ( 6837): art/runtime/runtime.cc:289]   at void android.app.Activity.startActivityForResult(android.content.Intent, int) (Activity.java:3706)
F/art     ( 6837): art/runtime/runtime.cc:289] Dumping all threads without appropriate locks held: thread list lock mutator lock
F/art     ( 6837): art/runtime/runtime.cc:289] All threads:
F/art     ( 6837): art/runtime/runtime.cc:289] DALVIK THREADS (16):
F/art     ( 6837): art/runtime/runtime.cc:289]   (no managed stack frames)
<< lot more lines of log here >>
F/libc    ( 6837): Fatal signal 6 (SIGABRT), code -6 in tid 6882 (QtThread)

W/linker  ( 4449): libQt5Gui.so: unused DT entry: type 0x1d arg 0x4c19d
W/linker  ( 4449): libQt5Widgets.so: unused DT entry: type 0x1d arg 0x6a769
W/linker  ( 4449): libQt5Svg.so: unused DT entry: type 0x1d arg 0x8f18
W/linker  ( 4449): libQt5AndroidExtras.so: unused DT entry: type 0x1d arg 0x5044
W/linker  ( 4449): libqtforandroid.so: unused DT entry: type 0x1d arg 0x8cac
I/Qt      ( 4449): qt start
W/System.err( 4449): java.lang.NoSuchFieldException: mInsetState
W/System.err( 4449):    at java.lang.Class.getDeclaredField(Class.java:890)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.getAccessibleField(ExtractStyle.java:405)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.getDrawable(ExtractStyle.java:1103)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.getLayerDrawable(ExtractStyle.java:629)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.getRippleDrawable(ExtractStyle.java:820)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.getDrawable(ExtractStyle.java:1028)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.extractViewInformations(ExtractStyle.java:1187)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.extractTextAppearanceInformations(ExtractStyle.java:1336)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.<init>(ExtractStyle.java:2017)
W/System.err( 4449):    at org.qtproject.qt5.android.QtActivityDelegate.loadApplication(QtActivityDelegate.java:438)
W/System.err( 4449):    at java.lang.reflect.Method.invoke(Native Method)
W/System.err( 4449):    at java.lang.reflect.Method.invoke(Method.java:372)
W/System.err( 4449):    at org.qtproject.qt5.android.bindings.QtActivity.loadApplication(QtActivity.java:245)
W/System.err( 4449):    at org.qtproject.qt5.android.bindings.QtActivity.startApp(QtActivity.java:655)
W/System.err( 4449):    at org.qtproject.qt5.android.bindings.QtActivity.onCreate(QtActivity.java:895)
W/System.err( 4449):    at android.app.Activity.performCreate(Activity.java:5990)
W/System.err( 4449):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
W/System.err( 4449):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
W/System.err( 4449):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
W/System.err( 4449):    at android.app.ActivityThread.access$800(ActivityThread.java:151)
W/System.err( 4449):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
W/System.err( 4449):    at android.os.Handler.dispatchMessage(Handler.java:102)
W/System.err( 4449):    at android.os.Looper.loop(Looper.java:135)
W/System.err( 4449):    at android.app.ActivityThread.main(ActivityThread.java:5254)
W/System.err( 4449):    at java.lang.reflect.Method.invoke(Native Method)
W/System.err( 4449):    at java.lang.reflect.Method.invoke(Method.java:372)
W/System.err( 4449):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
W/System.err( 4449):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
W/System.err( 4449): java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object java.lang.reflect.Field.get(java.lang.Object)' on a null object reference
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.getDrawable(ExtractStyle.java:1103)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.getLayerDrawable(ExtractStyle.java:629)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.getRippleDrawable(ExtractStyle.java:820)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.getDrawable(ExtractStyle.java:1028)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.extractViewInformations(ExtractStyle.java:1187)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.extractTextAppearanceInformations(ExtractStyle.java:1336)
W/System.err( 4449):    at org.qtproject.qt5.android.ExtractStyle.<init>(ExtractStyle.java:2017)
W/System.err( 4449):    at org.qtproject.qt5.android.QtActivityDelegate.loadApplication(QtActivityDelegate.java:438)
W/System.err( 4449):    at java.lang.reflect.Method.invoke(Native Method)
W/System.err( 4449):    at java.lang.reflect.Method.invoke(Method.java:372)
W/System.err( 4449):    at org.qtproject.qt5.android.bindings.QtActivity.loadApplication(QtActivity.java:245)
W/System.err( 4449):    at org.qtproject.qt5.android.bindings.QtActivity.startApp(QtActivity.java:655)
W/System.err( 4449):    at org.qtproject.qt5.android.bindings.QtActivity.onCreate(QtActivity.java:895)
W/System.err( 4449):    at android.app.Activity.performCreate(Activity.java:5990)
W/System.err( 4449):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
W/System.err( 4449):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
W/System.err( 4449):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
W/System.err( 4449):    at android.app.ActivityThread.access$800(ActivityThread.java:151)
W/System.err( 4449):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
W/System.err( 4449):    at android.os.Handler.dispatchMessage(Handler.java:102)
W/System.err( 4449):    at android.os.Looper.loop(Looper.java:135)
W/System.err( 4449):    at android.app.ActivityThread.main(ActivityThread.java:5254)
W/System.err( 4449):    at java.lang.reflect.Method.invoke(Native Method)
W/System.err( 4449):    at java.lang.reflect.Method.invoke(Method.java:372)
W/System.err( 4449):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
W/System.err( 4449):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
<< more lines of log here >>
W/linker  ( 4449): libTouchImage.so: unused DT entry: type 0x1d arg 0x8efc
W/Qt A11Y ( 4449): Could not activate platform accessibility.

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;
}