Mobile and Embedded

Hi and welcome to devnet, Boot2Qt being a commercial offering, you should contact the Qt Company directly. As a guess, check the code of that application and search for a timer somewhere that triggers the refreshing.

Hi, The answer is in this file. I realized that this is temlate file. C:\Qt\5.14.2\android\src\3rdparty\gradle\gradle\wrapper\gradle-wrapper.properties When you change this file it always come 6.7 :) Regards, Mucip:)

@J-Hilk cool i will try it. thanks

@Creatorczyk you may want to check some of these posts regarding using CMake and Qt while developing apps for embedded devices.

@SGaist @jsulm After updating the compiler, it worked. Thanks!!!!

@bogong Just add it to your pro file

@Qt-embedded-developer Please read https://doc.qt.io/qt-5/thread-basics.html it answers your question.

Hi all. I have the same problem with Rpi 3b, Qt 5.8.0 and ELGFS, compiled from fresh. I get qt.qpa.input: evdevtouch: /dev/input/event0: min X: 0 max X: 0 and if I touch on the screen nothing happens. evtest works fine

@HTWAMD Configuring the pins on Microcontrollers can take a lot of time - so my team & I hacked together a small tool of our own for Nordic MCUs. Initialise your nRF52832 based projects much faster with Vicara’s Code Generator!  A simple GUI to configure pins, peripherals and project files without writing a single line of code. We currently support GPIO, GPIOTE, PWM, UART, SPI & TWIM with Segger Embedded Studio project file generation. More peripherals and boards to be supported soon.  Please do try it out and share your feedback! The website link is: https://vicara.co/nrf52-code-generator

this worked for me: format.setScanLineDirection(QVideoSurfaceFormat::BottomToTop);

@Qt-embedded-developer said in How to store signal slot data in side per 2 msec running thread?: but how to store that data best way i want to know ? Not sure what the problem is with that. You should explain what you want to do better, as it is not really clear. Do you want to store images and videos? If so store them in files. Path and id can be stored in simple variables or lists (depends on how many you want to store).

thank you for your answer @Pablo-J-Rogina, but does mapbox support the implementation of mapboxgl from Qt to Android? because when I try to apply Mapboxgl to Android, the app crashes or blank screen. this OutPut Log if I deploy my app to android: [image: 7cc50992-3f28-4756-a9a3-c87e78c75705.png]

First of all, I want to make clear the info about supported android API versions. As stated here: https://doc.qt.io/qt-5.14/android.html, Qt 5.14 (and 5.15), support only API 21 or later. But Qt 5.12 and 5.9 support API 16+ (https://doc.qt.io/qt-5.12/android.html, https://doc.qt.io/qt-5.9/android-support.html). As I understand, you don't really need to change android SDK version in build options to support the lower API, as minimum possible API automaticly set to minimum supported by your version of Qt. So technically if you just compile your code in Qt 5.12 without changes in default build options (it is "SDK: android-30" now), it gonna support API 16 or later. Or at least it works fine for me with device emulators (API 16) and a real tablet (API 17). The same goes for Qt 5.15 (API 21+), checked it for real device with API 23. Here explained some important differences between supported android API version of your app and required android SDK version for Qt, which probably can be confusing (smth like API != SDK and usually API < SDK): https://wiki.qt.io/Android => only section "Manual Installation". It described for old Qt versions, and I suppose similar principles work for newer. Thats why you get build errors in case if "SDK: android-23", but option "SDK: android-28" works on API 23 (just example). And I'm new in Qt too, so it would be nice if anyone correct me if there are errors.

I found solution, I added this in CMakeLists.txt and it worked in my case: set(Qt5_DIR "C:\\Qt\\5.13.1\\Android_static\\lib\\cmake\\Qt5\\") set(Qt5Core_DIR "C:\\Qt\\5.13.1\\Android_static\\lib\\cmake\\Qt5Core\\") find_package(Qt5 REQUIRED COMPONENTS Core) include_directories("C:\\Qt\\5.13.1\\Android_static\\include") include_directories("C:\\Qt\\5.13.1\\Android_static\\include\\QtCore") add_library(Qt5Core STATIC IMPORTED) set_target_properties(Qt5Core PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/libs/${ANDROID_ABI}/libQt5Core.a) target_link_libraries( # Specifies the target library. MyLib Qt5Core )