Mobile and Embedded

Thanks。 you help me too much。

@SGaist QT9.6. I changed a method, the library linked to the program is also compiled armv7 and arm64. First compile the armv7 and arm64 libraries separately, then merge them with the lipo tool.

Hi, Not that carefully: you installed NDK r18 while r10e is recommend. From some posts I've seen, it seems that r17 might be an option. But IIRC with r18, gcc was dropped and is now a symlink to clang. More information about Python on Android can be find here.

I tried to export that and looked at framebuffer calls. Its seems that qt linuxfb just calls mmap and grabs a pointer to the buffer memory. It then just edits all the pixels using that pointer. Thanks for the suggestion! I was able to track that my framebuffer driver was wrong and was able to change it.

I have found the problem. The auto-detect kits function only works using NDK 10, while before I was using NDK 18. So after selecting the kits, the project can be built. But this problem is hard to detect because there's no useful information.

@amanill are you sure you have followed the prerequisites?

@JKSH Yes I did. On QT part, we followed a lot of techniques mentioned in that post. Using Loaders for lazy loading, optimizing images, using qtquickcompiler. The major challenge is on the OS boot time that we are working on.

Here is the link to the corresponding thread on the mailing list.

@Bremenpl there is a known issue for the androideployqt tool to scan QML imports across all qml files and add them to the APK. Add all imports to the main qml file to let the androideployqt discover them. Maybe this is also the case here. Regarding the warnings. About what warnings are you talking? At least those: /data/app/org.qtproject.example.ntm_client_win32-1/lib/x86/libQt5Network.so: unsupported flags DT_FLAGS_1=0x81 can be ignored (QTBUG-57909)

For you to debug with just only QtMultimedia set this variable environment: export QT_LOGGING_RULES=qt.multimedia.*=true Why you not use PySide2? It practical and efficient install with virtualenv and pip3. I belive there are missing libraries as Gstreamer, in this case. Cleiton Bueno Blog | Linkedin | B2Open

Thank you for reply @jsulm :) Actually i am working on Ubuntu mate (Linux) and i have rotated the screen also but, in Ubuntu mate OS screen is rotates onlu 180 degree only (Just like mirror image). it is not getting rotate +90 degree or -90 degree. Is there any other option to rotate?????

I solved by closing my db connexion with this instruction : dbCnx.removeDatabase (dbCnx.connectionName ());

Thanks for the tip, I will keep that in mind. @aha_1980 said in Application not working in release mode on Android: Have you changed anything on your computer? Updated Qt, Qt Creator or Android NDK or SDK? Well, yes I have reinstalled Qt on my Linux machine and installed Android Studio (for SDK and NDK). However, as I mentioned in the bug report I have tried to run the application from a fresh install of Qt on Windows and experienced the same issue.

I find the solution, hope that help some one. void Handler_Transaction::saveObject(bool modeThread) { if(modeThread == true) { //****************************************************** // it work for me QtConcurrent::run( this{ this->saveObject(false);}); ); return; } //doing script of thread here // }

Hi @SGaist , Yeah i just need to look into it a little bit better and do some research. After i get the class working i will try to integrate it, but this radio system is kinda low on my priority list, so i will come back with a solution when i have the time. I will mark this as solved and start a new thread when i have the class made for integration. Thanks, Izba