从RecyclerView.Adapter内部调用的Activity的Fragment上获取onActivityResult [英] get onActivityResult on Fragment from Activity that called inside RecyclerView.Adapter

问题描述

好的，这是我的问题

1. 我有一个片段，其中包含RecyclerView，当然还有一个容纳内容的适配器(称为ApprovalCutiCardAdapter).

2. 在ApprovalCutiCardAdapter里面，我在卡上设置了OnClickListener，当单击Card时，它将启动一个名为DetailApprovalCuti的活动.这是我启动活动的代码

1. I have a Fragment that contains RecyclerView, and of course an adapter (called ApprovalCutiCardAdapter) that hold the content.

2. Inside that ApprovalCutiCardAdapter I set OnClickListener on the card, when Card is clicked it will launch an Activity called DetailApprovalCuti. Here is my code to launch the activity

((Activity) MyApplication.getmContext()).startActivityForResult(detailApprovalCutiIntent, 1);

在DetailApprovalCuti中，我正在执行finishActivity(1)以获得onActivityResult事件.但是，并不是在所有地方都调用该事件(在承载该片段的活动中以及在该片段中)

In DetailApprovalCuti I'm executing finishActivity(1) to get an event of onActivityResult. But that event is not being called everywhere (in Activity that host the fragment, and in the fragment)

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.e("result", "ApprovalIzinCutiFragment");
    super.onActivityResult(requestCode, resultCode, data);
}

这是我启动Acvitity的代码

Here's my code to start the Acvitity

@Override
public void onBindViewHolder(final CutiViewHolder holder, final int position) {
....
holder.cv.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        Intent detailApprovalCutiIntent = new Intent(MyApplication.getmContext(), DetailApprovalCuti.class);
        Bundle b = new Bundle();
        b.putParcelable("cuti", ApprovalCutiCardAdapter.allCuti.get(position));
        b.putParcelable("process_cuti", ApprovalCutiCardAdapter.allCuti.get(position).getProcessCuti());
        detailApprovalCutiIntent.putExtras(b);
        ((Activity)MyApplication.getmContext()).startActivityForResult(detailApprovalCutiIntent,1);
    }
});

....
}

这是我完成活动的代码

Here's my code to finish the activity

btnReject.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        new AlertDialog.Builder(DetailApprovalCuti.this)
                .setTitle("Peringatan")
                .setMessage("Apakah anda yakin?")
                .setIcon(android.R.drawable.ic_dialog_alert)
                .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int whichButton) {
                        setResult(1);
                        finish();
                    }
                }).setNegativeButton(android.R.string.no, null).show();
    }
});

推荐答案

问题在于，在下面一行中，您正在从一个Activity中调用startActivityForResult()，而这可能不是您所期望的.

The problem is that, in the following line, you're calling startActivityForResult() from an Activity which might not be the one you're expecting.

((Activity)MyApplication.getmContext()).startActivityForResult(detailApprovalCutiIntent, 1);

考虑到适配器是从Fragment设置的，您应该将上面的行修改为:

Considering that your adapter is set from a Fragment, you should modify the above line to:

fragment.getActivity().startActivityForResult(detailApprovalCutiIntent, 1);

经验教训

对于信物是病态的骗子，请不要使用单身信徒.

PS:单个实例很好，但单例(如全局变量)是一个糟糕的设计，必须避免.

PS: single instances are fine but singletons (like global variables) are a bad design and must be avoided.

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