java onActivityResult应该调用super。onActivityResult

Question

我是Android Studio的新手，正在尝试创建一个简单的应用程序。当我需要使用onActivityResult保存其他活动的数据时，应用程序不断崩溃：

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == 1) {
        if (resultCode == RESULT_OK) {
            Job updatedJobDetails = (Job)data.getSerializableExtra("updatedJobDetails");
            int position = data.getIntExtra("pos", -1);

            adapter.remove(adapter.getItem(position));
            adapter.insert(updatedJobDetails, position);
        }
    }
}

首先它说，我需要

onActivityResult should call super.onActivityResult

但是当我这么做的时候，我一使用这个方法它就崩溃了。日志：

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.smapassignment01, PID: 6809
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { (has extras) }} to activity {com.example.smapassignment01/com.example.smapassignment01.MainActivity}: java.lang.ArrayIndexOutOfBoundsException: length=15; index=-1
    at 安卓.app.ActivityThread.deliverResults(ActivityThread.java:4360)
    at 安卓.app.ActivityThread.handleSendResult(ActivityThread.java:4402)
    at 安卓.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:49)
    at 安卓.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
    at 安卓.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
    at 安卓.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
    at 安卓.os.Handler.dispatchMessage(Handler.java:106)
    at 安卓.os.Looper.loop(Looper.java:193)
    at 安卓.app.ActivityThread.main(ActivityThread.java:6669)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.安卓.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.安卓.internal.os.ZygoteInit.main(ZygoteInit.java:858)
 Caused by: java.lang.ArrayIndexOutOfBoundsException: length=15; index=-1
    at java.util.ArrayList.get(ArrayList.java:439)
    at 安卓.widget.ArrayAdapter.getItem(ArrayAdapter.java:393)
    at com.example.smapassignment01.MainActivity.onActivityResult(MainActivity.java:122)
    at 安卓.app.Activity.dispatchActivityResult(Activity.java:7454)
    at 安卓.app.ActivityThread.deliverResults(ActivityThread.java:4353)
    at 安卓.app.ActivityThread.handleSendResult(ActivityThread.java:4402) 
    at 安卓.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:49) 
    at 安卓.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
    at 安卓.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
    at 安卓.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) 
    at 安卓.os.Handler.dispatchMessage(Handler.java:106) 
    at 安卓.os.Looper.loop(Looper.java:193) 
    at 安卓.app.ActivityThread.main(ActivityThread.java:6669) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.安卓.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
    at com.安卓.internal.os.ZygoteInit.main(ZygoteInit.java:858) 

I/进程：发送信号。PID:6809信号：9 进程6809已终止

我真的无法从logcat报告中看出我做错了什么

根据this SO-question的说法，这是因为getAdapterPosition——但我甚至没有使用它，所以我完全迷路了，现在已经用了好几个小时，卡住了

更新：

只是为了表明，我的pos已经在另一个活动中出现，应用程序在该活动中崩溃：

        btnSaveNote.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            job.setUserNotes(etJobNotes.getText().toString());


            if (!cbAppliedJob.isChecked()){
                job.setJobApplied(false);
            }
            else{
                job.setJobApplied(true);
            }
            Intent data = new Intent();
            position = getIntent().getIntExtra("pos", -1);
            data.putExtra("pos", position);
            data.putExtra("updatedJobDetails", job);
            setResult(RESULT_OK, data);
            finish();
        }
    });