Java onActivityResult无法传递结果信息

我有一个手机上安装的所有应用程序的列表。此时，单击其中一个部件以卸载所选应用程序。问题是，即使卸载了应用程序，仍会保留在列表中。要删除它，我已经完成了这段代码，但不起作用（崩溃）

这是logcat

11-12 17:51:07.188: E/AndroidRuntime(27943): FATAL EXCEPTION: main
11-12 17:51:07.188: E/AndroidRuntime(27943): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=0, data=null} to activity {com.packagename/com.packagename.class}: java.lang.NullPointerException
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3495)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread.handleSendResult(ActivityThread.java:3538)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread.access$1100(ActivityThread.java:153)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1317)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.os.Handler.dispatchMessage(Handler.java:99)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.os.Looper.loop(Looper.java:137)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread.main(ActivityThread.java:5289)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at java.lang.reflect.Method.invokeNative(Native Method)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at java.lang.reflect.Method.invoke(Method.java:525)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at dalvik.system.NativeStart.main(Native Method)
11-12 17:51:07.188: E/AndroidRuntime(27943): Caused by: java.lang.NullPointerException
11-12 17:51:07.188: E/AndroidRuntime(27943):    at com.packagename.onActivityResult(myclass:java:87)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.Activity.dispatchActivityResult(Activity.java:5322)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3491)
11-12 17:51:07.188: E/AndroidRuntime(27943):    ... 11 more

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我的目的是在卸载应用程序后将其从列表中删除，但为什么会崩溃以及如何解决

您的appInfoArrayList或适配器可能为空。什么是onActivityResult（myclass:java:87）？onActivityResult中的数据是空的，所以请研究一下它返回空值的原因。第87行是adapter.notifyDataSetChanged（）；你在哪里实例化适配器？所以你的适配器是空的。共享您在哪里初始化它。

11-12 17:51:07.188: E/AndroidRuntime(27943): FATAL EXCEPTION: main
11-12 17:51:07.188: E/AndroidRuntime(27943): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=0, data=null} to activity {com.packagename/com.packagename.class}: java.lang.NullPointerException
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3495)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread.handleSendResult(ActivityThread.java:3538)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread.access$1100(ActivityThread.java:153)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1317)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.os.Handler.dispatchMessage(Handler.java:99)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.os.Looper.loop(Looper.java:137)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread.main(ActivityThread.java:5289)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at java.lang.reflect.Method.invokeNative(Native Method)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at java.lang.reflect.Method.invoke(Method.java:525)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at dalvik.system.NativeStart.main(Native Method)
11-12 17:51:07.188: E/AndroidRuntime(27943): Caused by: java.lang.NullPointerException
11-12 17:51:07.188: E/AndroidRuntime(27943):    at com.packagename.onActivityResult(myclass:java:87)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.Activity.dispatchActivityResult(Activity.java:5322)
11-12 17:51:07.188: E/AndroidRuntime(27943):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3491)
11-12 17:51:07.188: E/AndroidRuntime(27943):    ... 11 more