NDK and SDK versions with Qt 5.15.1

[Francky033]

I don't understand anything anymore.
What are the recommended versions of Android NDK, Android SDK to use with Qt 5.15.1?

How to fix Android compatibility warnings ? I have more than twenty but I don't understand anything... Am I using a bad version of SDK ?

Some examples of warnings

StrictMode policy violation: android.os.strictmode.NonSdkApiUsedViolation: Landroid/R$styleable;->TextView:[I
	at android.os.StrictMode.lambda$static$1(StrictMode.java:428)
	at android.os.-$$Lambda$StrictMode$lu9ekkHJ2HMz0jd3F8K8MnhenxQ.accept(Unknown Source:2)
	at java.lang.Class.getDeclaredField(Native Method)
	at org.qtproject.qt5.android.ExtractStyle.extractTextAppearanceInformations(ExtractStyle.java:1329)
	at org.qtproject.qt5.android.ExtractStyle.<init>(ExtractStyle.java:2003)
	at org.qtproject.qt5.android.QtActivityDelegate.loadApplication(QtActivityDelegate.java:617)
	at java.lang.reflect.Method.invoke(Native Method)
	at org.qtproject.qt5.android.bindings.QtLoader.loadApplication(QtLoader.java:267)
	at org.qtproject.qt5.android.bindings.QtLoader.startApp(QtLoader.java:505)
	at org.qtproject.qt5.android.bindings.QtActivityLoader.onCreate(QtActivityLoader.java:166)
	at org.qtproject.qt5.android.bindings.QtActivity.onCreateHook(QtActivity.java:267)
	at org.qtproject.qt5.android.bindings.QtActivity.onCreate(QtActivity.java:274)
	at android.app.Activity.performCreate(Activity.java:7144)
	at android.app.Activity.performCreate(Activity.java:7135)
	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
	at androidx.test.runner.MonitoringInstrumentation.callActivityOnCreate(MonitoringInstrumentation.java:13)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2931)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:193)
	at android.app.ActivityThread.main(ActivityThread.java:6718)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

StrictMode policy violation: android.os.strictmode.NonSdkApiUsedViolation: Landroid/R$styleable;->TextView:[I
	at android.os.StrictMode.lambda$static$1(StrictMode.java:428)
	at android.os.-$$Lambda$StrictMode$lu9ekkHJ2HMz0jd3F8K8MnhenxQ.accept(Unknown Source:2)
	at java.lang.Class.getDeclaredField(Native Method)
	at org.qtproject.qt5.android.ExtractStyle.extractTextAppearanceInformations(ExtractStyle.java:1329)
	at org.qtproject.qt5.android.ExtractStyle.extractListView(ExtractStyle.java:1816)
	at org.qtproject.qt5.android.ExtractStyle.<init>(ExtractStyle.java:2016)
	at org.qtproject.qt5.android.QtActivityDelegate.loadApplication(QtActivityDelegate.java:617)
	at java.lang.reflect.Method.invoke(Native Method)
	at org.qtproject.qt5.android.bindings.QtLoader.loadApplication(QtLoader.java:267)
	at org.qtproject.qt5.android.bindings.QtLoader.startApp(QtLoader.java:505)
	at org.qtproject.qt5.android.bindings.QtActivityLoader.onCreate(QtActivityLoader.java:166)
	at org.qtproject.qt5.android.bindings.QtActivity.onCreateHook(QtActivity.java:267)
	at org.qtproject.qt5.android.bindings.QtActivity.onCreate(QtActivity.java:274)
	at android.app.Activity.performCreate(Activity.java:7144)
	at android.app.Activity.performCreate(Activity.java:7135)
	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
	at androidx.test.runner.MonitoringInstrumentation.callActivityOnCreate(MonitoringInstrumentation.java:13)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2931)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loop(Looper.java:193)
	at android.app.ActivityThread.main(ActivityThread.java:6718)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

Thanks !

[SGaist]

Hi,

The information you are looking for is in the Getting Started With Qt For Androïd chapter in Qt's documentation.

[Francky033]

Thank you SGaist for this information. So we can use Qt 5.15.1 with SDK 29 and NDK r21d ?

But how to explain these warnings that tell me there is a compatibility problem with the SDK version (29) ?

[SGaist]

If it's the latest and greatest from Google, then I would go with the previous version. Each new release of the NDK has a tendency to break something for external projects using it.

[Francky033]

I have a problem selecting the correct version of ndk in qtcreator 4.13.1

I can select a version but it's always the version 21.1.6352462 that is finally used during the compilation...

How to solve this problem ?