Qt Android QGraphicsscene->AddPixmap无法正常工作

我正在做一个项目，该项目列出了来自公民的订单，包括文本和图像。

我遇到了一个很棒的问题，Qgraphicsscene->addPixmap，有时有效，有时无效。我无法检测到问题是什么。

QGraphicsPixmapItem* pItem;    
pItem = scene->addPixmap(QPixmap::fromImage(img));

IMG 已正确加载，如果未加载，则进行测试。

当我运行应用程序Qt创建器输出时，如下所示：

Starting remote process.E/Zygote  (23262): MountEmulatedStorage()
E/Zygote  (23262): v2
I/SELinux (23262): Function: selinux_compare_spd_ram, SPD-policy is existed. and_ver=SEPF_SM-A500F_4.4.4 ver=46
I/SELinux (23262): Function: selinux_compare_spd_ram , priority [2] , priority version is VE=SEPF_SM-A500F_5.0.2-1_0039
E/SELinux (23262): [DEBUG] get_category: variable seinfo: default sensitivity: NULL, cateogry: NULL
I/libpersona(23262): KNOX_SDCARD checking this for 10276
I/libpersona(23262): KNOX_SDCARD not a persona
I/ActivityManager( 1004): Start proc org.qtproject.serikbelediyesi for activity org.qtproject.serikbelediyesi/org.qtproject.qt5.android.bindings.QtActivity: pid=23262 uid=10276 gids={50276, 9997, 3003, 1028, 1015} abi=armeabi-v7a
D/TimaKeyStoreProvider(23262): TimaSignature is unavailable
D/ActivityThread(23262): Added TimaKeyStore provider
E/Qt      (23262): Can't create main activity
E/Qt      (23262): java.io.FileNotFoundException: /data/data/org.qtproject.serikbelediyesi/lib/libplugins_platforms_libqoffscreen.so: open failed: ENOENT (No such file or directory)
E/Qt      (23262):  at libcore.io.IoBridge.open(IoBridge.java:456)
E/Qt      (23262):  at java.io.FileInputStream.<init>(FileInputStream.java:76)
E/Qt      (23262):  at java.io.FileInputStream.<init>(FileInputStream.java:103)
E/Qt      (23262):  at org.qtproject.qt5.android.bindings.QtActivity.createBundledBinary(QtActivity.java:416)
E/Qt      (23262):  at org.qtproject.qt5.android.bindings.QtActivity.extractBundledPluginsAndImports(QtActivity.java:489)
E/Qt      (23262):  at org.qtproject.qt5.android.bindings.QtActivity.startApp(QtActivity.java:582)
E/Qt      (23262):  at org.qtproject.qt5.android.bindings.QtActivity.onCreate(QtActivity.java:895)
E/Qt      (23262):  at android.app.Activity.performCreate(Activity.java:6374)
E/Qt      (23262):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
E/Qt      (23262):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2752)
E/Qt      (23262):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2873)
E/Qt      (23262):  at android.app.ActivityThread.access$900(ActivityThread.java:181)
E/Qt      (23262):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1482)
E/Qt      (23262):  at android.os.Handler.dispatchMessage(Handler.java:102)
E/Qt      (23262):  at android.os.Looper.loop(Looper.java:145)
E/Qt      (23262):  at android.app.ActivityThread.main(ActivityThread.java:6145)
E/Qt      (23262):  at java.lang.reflect.Method.invoke(Native Method)
E/Qt      (23262):  at java.lang.reflect.Method.invoke(Method.java:372)
E/Qt      (23262):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
E/Qt      (23262):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
E/Qt      (23262): Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)
E/Qt      (23262):  at libcore.io.Posix.open(Native Method)
E/Qt      (23262):  at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186)
E/Qt      (23262):  at libcore.io.IoBridge.open(IoBridge.java:442)
E/Qt      (23262):  ... 19 more
D/PhoneWindow(23262): *FMB* installDecor mIsFloating : false