Are Qt/QML apps native or hybrid
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Hi
1: Often hybrid is used about applications that mix native code with web tech and runs
in a browser. QML is cross-compiled to the target and is in that regards native.
So QML is not hybrid in that sense. Using https://www.qt.io/qt-examples-for-webassembly
would be such hybrid.2: Performance wise, Qt would not hinder to make the next block buster app.
However, not all mobile concepts have a Qt wrapper so sometimes you must use native code/calls
anyway.3: QML is made with c++. it uses javascript for interface logic and small tasks but for anything heavy
you are recommended to make that in c++ and interface with the frontend.
Its all compiled to the target so its really not hybrid or suffer any penalty
to efficiency, stability and speed.4: They extend and refine QML to support new features and new platforms.
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Hi
1: Often hybrid is used about applications that mix native code with web tech and runs
in a browser. QML is cross-compiled to the target and is in that regards native.
So QML is not hybrid in that sense. Using https://www.qt.io/qt-examples-for-webassembly
would be such hybrid.2: Performance wise, Qt would not hinder to make the next block buster app.
However, not all mobile concepts have a Qt wrapper so sometimes you must use native code/calls
anyway.3: QML is made with c++. it uses javascript for interface logic and small tasks but for anything heavy
you are recommended to make that in c++ and interface with the frontend.
Its all compiled to the target so its really not hybrid or suffer any penalty
to efficiency, stability and speed.4: They extend and refine QML to support new features and new platforms.
Thank you so much for the answer.
1- What does "cross-compiled to the target" in QML mean, please?
2- I couldn't understand this section. Would you paraphrase it, please?
3- So we must create the design part in QML and all the major code doing the real task in .cpp files. Was it what you meant? And when you say "compiled to the target" does it mean it's the behavior of native apps and not web based apps? -
Thank you so much for the answer.
1- What does "cross-compiled to the target" in QML mean, please?
2- I couldn't understand this section. Would you paraphrase it, please?
3- So we must create the design part in QML and all the major code doing the real task in .cpp files. Was it what you meant? And when you say "compiled to the target" does it mean it's the behavior of native apps and not web based apps?And when you say "compiled to the target" does it mean it's the behavior of native apps and not web based apps?
Sure, C++ is a compiled language that results in native machine code - unlike Java which is compiled to machine independent code.
Note that there is also a QtQuick compiler. I have not used that myself so I cannot say much about it.
Regards
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And when you say "compiled to the target" does it mean it's the behavior of native apps and not web based apps?
Sure, C++ is a compiled language that results in native machine code - unlike Java which is compiled to machine independent code.
Note that there is also a QtQuick compiler. I have not used that myself so I cannot say much about it.
Regards
@aha_1980
Thank you.
Does your first sentence mean that, in some cases creating an Android app using C++ may be better than the one created by Java, because of their different methods of compilation? If so, in what context is it better? I guess "speed".For the QtQuick compiler, I hope another expert here gives some clear explanation.
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@aha_1980
Thank you.
Does your first sentence mean that, in some cases creating an Android app using C++ may be better than the one created by Java, because of their different methods of compilation? If so, in what context is it better? I guess "speed".For the QtQuick compiler, I hope another expert here gives some clear explanation.
@qcoderpro I would not say that C++ is faster than Java, nor vice versa. Both can produce very fast, but also very slow programs if you use them wrong.
Java has the Just-in-Time compiler to optimize at run time, which can gain performance for some programs. On the other hand, it has the Garbage Collector which can make your app slow if it starts to clean up at the wrong moment. I'd take that as a small advantage for C++ ;)
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@qcoderpro I would not say that C++ is faster than Java, nor vice versa. Both can produce very fast, but also very slow programs if you use them wrong.
Java has the Just-in-Time compiler to optimize at run time, which can gain performance for some programs. On the other hand, it has the Garbage Collector which can make your app slow if it starts to clean up at the wrong moment. I'd take that as a small advantage for C++ ;)
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Hi
1- What does "cross-compiled to the target" in QML mean, please?(*)it means that the Qt you are using is made for the target/platform/architecture. When you, as example, make an app for Andriod, both Qt/QML(system) and your code is compiled with a compiler that can generate code for the given platform.
2- I couldn't understand this section. Would you paraphrase it, please?
(*)Qt/QML is as fast as any other native application.
However, Not all mobile features is wrapped by Qt so most apps will mix
both Qt/QML and some native calls.3- So we must create the design part in QML and all the major code doing the real task in .cpp files. Was it what you meant? And when you say "compiled to the target" does it mean it's the behavior of native apps and not web based apps?
(*) Yes
Both because not all can be done with the javascript but also
due to it was designed this way. Using QML as front end and a c++
backend for maximum UX flexibility and max performance. -
Hi
1- What does "cross-compiled to the target" in QML mean, please?(*)it means that the Qt you are using is made for the target/platform/architecture. When you, as example, make an app for Andriod, both Qt/QML(system) and your code is compiled with a compiler that can generate code for the given platform.
2- I couldn't understand this section. Would you paraphrase it, please?
(*)Qt/QML is as fast as any other native application.
However, Not all mobile features is wrapped by Qt so most apps will mix
both Qt/QML and some native calls.3- So we must create the design part in QML and all the major code doing the real task in .cpp files. Was it what you meant? And when you say "compiled to the target" does it mean it's the behavior of native apps and not web based apps?
(*) Yes
Both because not all can be done with the javascript but also
due to it was designed this way. Using QML as front end and a c++
backend for maximum UX flexibility and max performance. -
Thank you very much. I think I got all the things I wanted to.
you also encouraged me and made me confident to continue with Qt. Thanks. :)@qcoderpro
Super. Happy programming.
Btw. just in case you didnt notice before
https://qmlbook.github.io/ -
@qcoderpro
Super. Happy programming.
Btw. just in case you didnt notice before
https://qmlbook.github.io/
