Android app unable to connect to the internet?

[tubbadu]

Hello, I'm writing a QML android App, and I need it to connect to the internet, so in AndroidManifest.xml I added android.permission.INTERNET (using the gui editor in qt creator)
but this seems not enough, the app is still unable to connect: If I try to simply display an image:

Image{
    source: "https://doc.qt.io/style/qt-logo-documentation.svg"
}

in the desktop build it is correctly shown, but in the android app it is not

what is missing to be able to connect to the internet?

thanks in advance!

[JoeCFD]

you check if android is connected?
https://stackoverflow.com/questions/17880287/android-programmatically-check-internet-connection-and-display-dialog-if-notco

[tubbadu]

@JoeCFD the device is connected as I'm able (with other apps) to connect to internet

[tubbadu]

if I try to set the source of the image while live debugging the android device, this is the output:

E linker  : library "/system/lib/libcrypto.so" ("/system/lib/libcrypto.so") needed or dlopened by "/data/app/org.tubbadu.biscottinoqt-fw5Qe1IQHoLuUmWbs2OFdg==/lib/arm/libQt6Core_armeabi-v7a.so" is not accessible for the namespace: [name="classloader-namespace", ld_library_paths="", default_library_paths="/data/app/org.tubbadu.biscottinoqt-fw5Qe1IQHoLuUmWbs2OFdg==/lib/arm:/data/app/org.tubbadu.biscottinoqt-fw5Qe1IQHoLuUmWbs2OFdg==/base.apk!/lib/armeabi-v7a", permitted_paths="/data:/mnt/expand:/data/data/org.tubbadu.biscottinoqt"]
W qt.tlsbackend.ossl: : Failed to load libssl/libcrypto.
W qt.network.ssl: : The backend "cert-only" does not support QSslKey
W qt.network.ssl: : Active TLS backend does not support key creation
W qt.network.ssl: : The backend "cert-only" does not support QSslKey
W qt.network.ssl: : Active TLS backend does not support key creation
W qt.network.ssl: : The backend "cert-only" does not support QSslKey
W qt.network.ssl: : Active TLS backend does not support key creation
W qt.network.ssl: : The backend "cert-only" does not support QSslKey
W qt.network.ssl: : Active TLS backend does not support key creation
W qt.network.ssl: : The backend "cert-only" does not support QSslKey
W qt.network.ssl: : Active TLS backend does not support key creation
W qt.network.ssl: : The backend "cert-only" does not support QSslKey
W qt.network.ssl: : Active TLS backend does not support key creation
W qt.network.ssl: : The backend "cert-only" does not support QSslSocket
W qt.network.ssl: : The backend named "cert-only" does not support TLS
W qt.network.ssl: : QSslSocket::connectToHostEncrypted: TLS initialization failed
W Biscottino!: qrc:/biscottino-qt/GamePage.qml:134:3: QML QQuickImage: TLS initialization failed

[JoeCFD]

you need to add it on
Qt Creator->Tools->Options->Devices->Android(tab)->Android OpenSSL settings
click Download Open SSL

[JoeCFD]

@tubbadu How did you code to connect internet in Qt?

[tubbadu]

@JoeCFD said in Android app unable to connect to the internet?:

you need to add it on
Qt Creator->Tools->Options->Devices->Android(tab)->Android OpenSSL settings
click Download Open SSL

it says it's already configured

How did you code to connect internet in Qt?

what do you mean? I just tried to set the Image source to https://doc.qt.io/style/qt-logo-documentation.svg (or any other https image, png, jpeg, svg...), on the desktop application it just work, while on android doesn't work

[JoeCFD]

@tubbadu
if you use pro file, add this to it

LIBS += $$ANDROID_SDK_ROOT/android_openssl/latest/arm64/libssl_1_1.so
LIBS += $$ANDROID_SDK_ROOT/android_openssl/latest/arm64/libcrypto_1_1.so

for Qt5 add this also
ANDROID_EXTRA_LIBS += \
                      $$ANDROID_SDK_ROOT/android_openssl/latest/arm64/libssl_1_1.so \
                      $$ANDROID_SDK_ROOT/android_openssl/latest/arm64/libcrypto_1_1.so

[tubbadu]

@JoeCFD I'm building the app with the kit "Android Qt 6.4.1 armeabi-v7a", so using arm64/libssl_1_1.so causes the application to crash on start
using instead

LIBS += $$ANDROID_SDK_ROOT/android_openssl/latest/arm/libssl_1_1.so
LIBS += $$ANDROID_SDK_ROOT/android_openssl/latest/arm/libcrypto_1_1.so

builds the application correctly, but nothing changes:

W qt.network.ssl: : The backend "cert-only" does not support QSslKey
W qt.network.ssl: : Active TLS backend does not support key creation
W qt.network.ssl: : The backend "cert-only" does not support QSslKey
W qt.network.ssl: : Active TLS backend does not support key creation
W qt.network.ssl: : The backend "cert-only" does not support QSslSocket
W qt.network.ssl: : The backend named "cert-only" does not support TLS
W qt.network.ssl: : QSslSocket::connectToHostEncrypted: TLS initialization failed
D InputMethodManager: HSIFW - flag : 0 Pid : 25979
I InputMethodManager: hideSoftInputFromWindow ignore mServedView == null or mServedView.getWindowToken() != windowToken, mServedView :DecorView@b758b0e[QtActivity]
W Biscottino!: qrc:/biscottino-qt/main.qml:17:2: QML QQuickImage: TLS initialization failed

perhaps an older version of qt may fix this? should I try to build with qt5?
thanks for your time!

[JoeCFD]

@tubbadu I use Qt5.15.2 and do not have issues with ssl.