Hi and welcome to devnet, There's no prebuilt MySQL for Androïd. If you really want that you'll have to first build the MariaDB client library for Androïd and then the MariaDB driver. That said, when people try to access a MySQL database directly like that from Androïd, it means they are planning to expose their server directly on internet which is a very bad idea. The recommendation is to have a REST api in front of the database that will return only required data and also abstract the database itself.

Newer versions of Android are able to read native libs directly from the apk without extracting them if they are stored uncompressed in the apk. This is done to save disk space on the device, and the new default during apk creation, but Qt 5.12 does not handle this. To compress native libs again add android:extractNativeLibs="true" in AndroidManifest.xml to the application tag.

Post your environment information (OS, Qt version, Qt Creator version) Are Android SDK & NDK installed and set up in Qt Creator? Have you selected the architecture in Projects->Build pane of Qt Creator? Is this a new project or some older one which you are porting to newer Qt version?

There is a Bug filed called "Can't debug Android App": https://bugreports.qt.io/browse/QTCREATORBUG-20379 In one of the comments someone mentions that you'll need to manually update the AndroidManifest.xml file to add the attribute android:debuggable="true" To the Application tag. This gets the Application deployed and starts it up. But looks like the debugger still can't attach. And it also looks like the Manifest gets autogenerated and needs to be updated each time you try to debug. Hopefully there is something one can set to adjust the automatic generation so you don't have to edit that manifest each time you need to deploy.

Found it: https://github.com/qt/qtbase/blob/5.12/src/corelib/global/qlogging.cpp Specifically, I needed to set application name in QCoreApplication.

Hi and welcome to devnet, Did you try with QCamera and it's friendly classes ?

@p3c0 Yes, thanks. I found this example. And he is works. http://doc.qt.io/qt-5/qtwebview-minibrowser-example.html And I found - Webengine is not supported on android and not with MinGW either.

@mcosta W/libPmps.so(10267): (null):0 ((null)): qt.network.ssl: QSslSocket: cannot resolve TLSv1_1_client_method W/libPmps.so(10267): (null):0 ((null)): qt.network.ssl: QSslSocket: cannot resolve TLSv1_2_client_method W/libPmps.so(10267): (null):0 ((null)): qt.network.ssl: QSslSocket: cannot resolve TLSv1_1_server_method W/libPmps.so(10267): (null):0 ((null)): qt.network.ssl: QSslSocket: cannot resolve TLSv1_2_server_method W/libPmps.so(10267): (null):0 ((null)): qt.network.ssl: QSslSocket: cannot resolve SSL_select_next_proto W/libPmps.so(10267): (null):0 ((null)): qt.network.ssl: QSslSocket: cannot resolve SSL_CTX_set_next_proto_select_cb W/libPmps.so(10267): (null):0 ((null)): qt.network.ssl: QSslSocket: cannot resolve SSL_get0_next_proto_negotiated

yes the input isn't blocked , it not validated!