求救，for android 真机部署后可以直接运行，但是调试就黑屏

[blueskink]

W/System.err(13058): java.lang.ClassNotFoundException: android.graphics.drawable.VectorDrawable
W/System.err(13058): at java.lang.Class.classForName(Native Method)
W/System.err(13058): at java.lang.Class.forName(Class.java:251)
W/System.err(13058): at java.lang.Class.forName(Class.java:216)
W/System.err(13058): at org.qtproject.qt5.android.ExtractStyle.getClass(ExtractStyle.java:396)
W/System.err(13058): at org.qtproject.qt5.android.ExtractStyle.<init>(ExtractStyle.java:102)
W/System.err(13058): at org.qtproject.qt5.android.QtActivityDelegate.loadApplication(QtActivityDelegate.java:438)
W/System.err(13058): at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err(13058): at java.lang.reflect.Method.invoke(Method.java:515)
W/System.err(13058): at org.qtproject.qt5.android.bindings.QtActivity.loadApplication(QtActivity.java:250)
W/System.err(13058): at org.qtproject.qt5.android.bindings.QtActivity.startApp(QtActivity.java:660)
W/System.err(13058): at org.qtproject.qt5.android.bindings.QtActivity.onCreate(QtActivity.java:900)
W/System.err(13058): at android.app.Activity.performCreate(Activity.java:5303)
W/System.err(13058): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1091)
W/System.err(13058): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2165)
W/System.err(13058): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2255)
W/System.err(13058): at android.app.ActivityThread.access$800(ActivityThread.java:142)
W/System.err(13058): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1213)
W/System.err(13058): at android.os.Handler.dispatchMessage(Handler.java:102)
W/System.err(13058): at android.os.Looper.loop(Looper.java:136)
W/System.err(13058): at android.app.ActivityThread.main(ActivityThread.java:5217)
W/System.err(13058): at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err(13058): at java.lang.reflect.Method.invoke(Method.java:515)
W/System.err(13058): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:818)
W/System.err(13058): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:634)
W/System.err(13058): at dalvik.system.NativeStart.main(Native Method)
W/System.err(13058): Caused by: java.lang.NoClassDefFoundError: android/graphics/drawable/VectorDrawable
W/System.err(13058): ... 25 more
W/System.err(13058): Caused by: java.lang.ClassNotFoundException: Didn't find class "android.graphics.drawable.VectorDrawable" on path: DexPathList[[zip file "/data/app/com.ds.elofm-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.ds.elofm-2, /vendor/lib, /system/lib]]
W/System.err(13058): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
W/System.err(13058): at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
W/System.err(13058): at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
W/System.err(13058): ... 25 more
W/ResourceType(13058): Skipping entry 0x1080524 in package table 0 because it is not complex!
Could not load shared library symbols for 100 libraries, e.g. /system/bin/linker.
Use the "info sharedlibrary" command to see the complete listing.
Do you need "set solib-search-path" or "set sysroot"?Unable to find dynamic linker breakpoint function.
GDB will retry eventurally. Meanwhile, it is likely
that GDB is unable to debug shared library initializers
or resolve pending breakpoints after dlopen().W/Qt A11Y (13058): Could not activate platform accessibility.

~~~~~~~~~~~~~~~~~~
直接打开app运行正常，但是调试的时候UI出不来，一片漆黑。 求帮助，谢谢。。。

[blueskink]

>*stopped,frame={addr="0x40086230",func="__futex_syscall3",args=[],from="D:\\QtWorkSpace\\build-androidTest-Android_for_armeabi_v7a_GCC_4_9_Qt_5_5_0-Debug\\libc.so"},thread-id="1",stopped-threads="all",core="4"
eERROR: UNEXPECTED STATE: 4 WANTED: 14 IN C:\work\build\qtsdk\qt-creator\src\plugins\debugger\gdb\gdbengine.cpp:1487
eERROR: UNEXPECTED STATE: 4 WANTED: 14 IN C:\work\build\qtsdk\qt-creator\src\plugins\debugger\gdb\gdbengine.cpp:1500
<117importPlainDumpers on
eERROR: UNEXPECTED STATE: 4 WANTED: 14 IN C:\work\build\qtsdk\qt-creator\src\plugins\debugger\gdb\gdbengine.cpp:1572
sStopped.
>116^done

~~~~~~~~~~~~~~~~~~

调试执行到：QQmlApplicationEngine engine;这一句代码时报错，界面出不来。

[彩阳]

看来Qt for Android环境的搭建还是一个比较复杂的事情呢。 我曾经调试过，能够显示界面。 不能显示界面的原因有很多，包含了NDK、Android SDK、Qt以及你写的程序原因在内。一个一个去排除，从Hello World开始做起。

[blueskink]

谢谢楼上，后来发现是qml调试的问题。