Question

我动态创建了以下RecyclerView。我想点击它时突出显示点击的项目。点击后，它会转到下一个Activity。我在下面给出了背景XML：

hRecyclerView.setBackgroundResource(R.drawable.mylistview_background);

这不是设定它的方法吗？我该怎么办？

        hRecyclerView = (RecyclerView) findViewById(R.id.my_history_view);

        // use a linear layout manager
        hLayoutManager = new LinearLayoutManager(this);
        hRecyclerView.setLayoutManager(hLayoutManager);
        hRecyclerView.setVerticalScrollBarEnabled(false);
        hRecyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL_LIST));
        hRecyclerView.setBackgroundResource(R.drawable.mylistview_background);
   hAdapter = new HistoryAdapter(history, this);
        hRecyclerView.setAdapter(hAdapter);


        hRecyclerView.addOnItemTouchListener(
                new RecyclerItemClickListener(context, new RecyclerItemClickListener.OnItemClickListener() {
                    @Override
                    public void onItemClick(View view, int position) {
                        // do whatever
                        if(position>0) {
                            History his = history.get(position - 1);
                            Intent intent = new Intent(getApplicationContext(), TrackActivity.class);
                            intent.putExtra("from", his.src_station);
                            intent.putExtra("to", his.dest_station);
                            intent.putExtra("train_no", his.train_no);
                            intent.putExtra("train_name", his.train_name);
                            startActivity(intent);
                            overridePendingTransition(R.anim.right_in, R.anim.left_out);

                        }
                    }
                })
        );

        hRecyclerView.setItemAnimator(new DefaultItemAnimator());

mylistview_background.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape>
            <gradient android:endColor="#22000000" android:startColor="#a7a2288f" android:angle="270" />
        </shape>
    </item>

    <item android:state_focused="true">
        <shape>
            <gradient android:endColor="#2200ff00" android:startColor="#a2008f00" android:angle="270" />
        </shape>
    </item>


</selector>

任何帮助都得到了很多赞赏！

Answer 1

您正在设置整个RecyclerView的背景（不会被“选中”）。您需要设置行视图的背景。在HistoryAdapter中的onCreateViewHolder中，您将膨胀行视图。 THAT 是需要选择器drawable的背景（您可以在xml或代码中设置它。）

Answer 2

hRecyclerView.setBackgroundResource(R.drawable.mylistview_background);

首先删除这一行，它是整个回收者视图。

您的自定义行/项布局应如下所示（将mylistview_background.xml放在drawable文件夹中）：

<RelativeLayout ...
     android:background="@drawable/mylistview_background">...
</RelativeLayout>

单击RecyclerView突出显示项目

2 个答案: