java - onClickListener 如何跟踪要删除的 View

Question

我正在学习教程 here - 现在我没有添加 textView，而是使用以下方法作为替代:

public void addView(LinearLayout container, String[] spin_array, String hint, int inputType, int tagger) {

        LayoutInflater layoutInflater = (LayoutInflater) getActivity().getBaseContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        final View addView = layoutInflater.inflate(R.layout.add_company_fragment_two_dynamic_content, null);

        final Spinner spin_dynamic = (Spinner) addView.findViewById(R.id.email_spinner1);
        EditText edt_dynamic = (EditText) addView.findViewById(R.id.edittext_email1);
        ImageView remove_dynamic = (ImageView) addView.findViewById(R.id.btn_remove);


        edt_dynamic.setHint(hint);
        setUpSpinners(spin_array, spin_dynamic);
        edt_dynamic.setTag(container.getTag() + "edt" + tagger);
        edt_dynamic.setInputType(inputType);
        edt_dynamic.setTypeface(roboto_condenced_light);
        spin_dynamic.setTag(container.getTag() + "spin" + tagger);

        idsMap.put(spin_dynamic.getTag().toString(), edt_dynamic.getTag().toString());

        // get height from dimens
        int height = (int) getResources().getDimension(R.dimen.lin_height);
        // set this height
        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, height);

        // we are only concerned about top margin here.
        layoutParams.setMargins(0, (int) getResources().getDimension(R.dimen.topMargin), 0, 0);
        container.addView(addView, 1, layoutParams);

        remove_dynamic.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //Remove View (LinearLayout) and also remove the key from idsMap so that we dont get a NullPointer later
                ((LinearLayout) addView.getParent()).removeView(addView);
                idsMap.remove(spin_dynamic.getTag().toString());
            }
        });
    }

这里的问题是我可以多次调用上述函数，以在 LinearLayout 中插入一个 View 行。

当我们尝试从容器中删除 View 时，我无法理解如何跟踪 addView 变量:

remove_dynamic.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    //Remove View (LinearLayout) and also remove the key from idsMap so that we dont get a NullPointer later
                    ((LinearLayout) addView.getParent()).removeView(addView);
                    idsMap.remove(spin_dynamic.getTag().toString());
                }
            });

onClickListener 如何知道要在此处删除的 addView 实例，如果我插入四个 View ，onClick 如何准确知道要删除哪一个？

没有错误，一切正常。但它为什么有效？

以下是表示此行为的图像:

Answer 1

你必须在删除 View 时使用相同的 View 对象，例如你在 ViewGroup 中添加了三个 View

addView1
addView2
addView3

所以当你想删除 fistview 即 addView1 时，你必须使用该对象 ((LinearLayout) addView.getParent()).removeView(addView1);