这是我在 Logcat 中单击“登录”按钮时收到的错误:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
at com.virtual.ai.Home.onCreate(Home.java:92)
at android.app.Activity.performCreate(Activity.java:7149)
at android.app.Activity.performCreate(Activity.java:7140)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1288)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3017)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3172)
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$H.handleMessage(ActivityThread.java:1906)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6863)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:537)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
2019-06-28 12:59:05.812 23283-23283/com.virtual.ai W/OPDiagnose: getService:OPDiagnoseService NULL 2019-06-28 12:59:05.815 23283-23506/com.virtual.ai D/OSTracker:操作系统事件:崩溃 2019-06-28 12:59:05.828 23283-23506/com.virtual.ai D/AbstractTracker:事件成功
错误似乎指的是 txtFullName.setText(Common.currentUser.getNa()); 第 18 行,不确定出了什么问题。
任何人,任何解决方案。当我点击我得到上面的 Logcat 时,我无法执行登录活动。
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