Hi Team,
Try to build the app sample ImageTarget, but crash when I click 'Start' on app and the log for your reference:
01-17 20:52:10.126 18985-18985/com.vuforia.samples.ImageTargets I/Timeline: Timeline: Activity_launch_request id:com.vuforia.samples.ImageTargets time:182875499 01-17 20:52:10.226 18985-18985/com.vuforia.samples.ImageTargets I/Vuforia: Native library libVuforia.so loaded 01-17 20:52:10.226 18985-18985/com.vuforia.samples.ImageTargets E/Vuforia: The library libImageTargetsNative.so could not be loaded 01-17 20:52:10.236 18985-18985/com.vuforia.samples.ImageTargets D/Vuforia: onCreate 01-17 20:52:12.936 18985-18985/com.vuforia.samples.ImageTargets E/art: No implementation found for void com.vuforia.samples.ImageTargets.ImageTargets.setActivityPortraitMode(boolean) (tried Java_com_vuforia_samples_ImageTargets_ImageTargets_setActivityPortraitMode and Java_com_vuforia_samples_ImageTargets_ImageTargets_setActivityPortraitMode__Z) 01-17 20:52:12.936 18985-18985/com.vuforia.samples.ImageTargets D/AndroidRuntime: Shutting down VM 01-17 20:52:12.936 18985-18985/com.vuforia.samples.ImageTargets E/AndroidRuntime: FATAL EXCEPTION: main Process: com.vuforia.samples.ImageTargets, PID: 18985 java.lang.UnsatisfiedLinkError: No implementation found for void com.vuforia.samples.ImageTargets.ImageTargets.setActivityPortraitMode(boolean) (tried Java_com_vuforia_samples_ImageTargets_ImageTargets_setActivityPortraitMode and Java_com_vuforia_samples_ImageTargets_ImageTargets_setActivityPortraitMode__Z) at com.vuforia.samples.ImageTargets.ImageTargets.setActivityPortraitMode(Native Method) at com.vuforia.samples.ImageTargets.ImageTargets.initApplication(ImageTargets.java:835) at com.vuforia.samples.ImageTargets.ImageTargets.updateApplicationStatus(ImageTargets.java:709) at com.vuforia.samples.ImageTargets.ImageTargets.onCreate(ImageTargets.java:493) at android.app.Activity.performCreate(Activity.java:6877) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1136) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3209) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3352) at android.app.ActivityThread.access$1100(ActivityThread.java:223) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1797) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:158) at android.app.ActivityThread.main(ActivityThread.java:7231) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)