1、我的异常信息如下
2021-01-11 12:52:43.318 5693-5693/com.example.fragrantfox_butter_knife E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.fragrantfox_butter_knife, PID: 5693
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.fragrantfox_butter_knife/com.example.fragrantfox_butter_knife.CategoryActivity}: java.lang.ClassCastException: com.android.internal.policy.DecorView cannot be cast to android.widget.AdapterView
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3270)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Caused by: java.lang.ClassCastException: com.android.internal.policy.DecorView cannot be cast to android.widget.AdapterView
at com.example.fragrantfox_butter_knife.CategoryActivity_ViewBinding.<init>(CategoryActivity_ViewBinding.java:30)
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
at butterknife.ButterKnife.bind(ButterKnife.java:170)
at butterknife.ButterKnife.bind(ButterKnife.java:99)
at com.example.fragrantfox_butter_knife.CategoryActivity.onCreate(CategoryActivity.java:30)
at android.app.Activity.performCreate(Activity.java:7802)
at android.app.Activity.performCreate(Activity.java:7791)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
2、原因
位置指向了
ButterKnife.bind(this);//作用用来防止内存泄露的。。。。我的内存为什么会泄露啊。
3、解决
我忘记加入ListView的了