Question

使用产品：Android studio 2022.2、SuperMap iMobile 11i(2022) SP1 for Android
操作系统：win11 x64

问题详细描述：该项目是移动GIS课程中的示范，项目可成功运行，但虚拟机中应用闪退，点击调试显示以下内容

下载的JDK版本为7u80，系统环境变量已设置

库文件和依赖文件设置完成

虚拟机中也已经拷贝入许可和数据

Answer 1

您好，上述问题出现的可能原因只是插入或拔出您的设备，由于某种原因，设备的socket端口堵塞，一般都是用真机调试的，建议使用真机调试程序

Comments

用了真机调试，还是闪退，说由于自身空指针异常造成，下面是问题trace

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.test/com.example.test.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'char[] java.lang.String.toCharArray()' on a null object reference
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3771)
	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3938)
	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103)
	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2318)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loopOnce(Looper.java:210)
	at android.os.Looper.loop(Looper.java:299)
	at android.app.ActivityThread.main(ActivityThread.java:8306)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:576)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1073)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'char[] java.lang.String.toCharArray()' on a null object reference
	at com.supermap.data.Environment.encryptionMac(Environment.java:2283)
	at com.supermap.data.Environment.writeFile(Environment.java:2312)
	at com.supermap.data.Environment.checkDevice_New(Environment.java:836)
	at com.supermap.data.Environment.initialization(Environment.java:626)
	at com.example.test.MainActivity.onCreate(MainActivity.java:24)
	at android.app.Activity.performCreate(Activity.java:8194)
	at android.app.Activity.performCreate(Activity.java:8160)
	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1329)
	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3744)
	... 12 more

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您好，请注意gradle版本不要超过28，以及gradle中需要声明ndk位置