java - 错误 setContentView(R.layout.activity_main)

Question

我正在尝试在这样的应用程序中添加recyclerview

        <android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerViewSlider"
            android:layout_width="match_parent"
            app:stackFromEnd="true"
            android:layout_height="215dp" />




 recyclerViewSlider = (RecyclerView) findViewById(R.id.recyclerViewSlider);
    recyclerViewSlider.setHasFixedSize(true);
    layoutManager.setStackFromEnd(true);
    recyclerViewSlider.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false));
    productListSlider = new ArrayList<>();

错误

Output:  D:\Android\xxxxxxxxx\xxxxxxxxxxxx\app\src\main\res\layout\activity_main.xml:65: error: attribute stackFromEnd (aka xxxxxx.xxxxxx.xxxxxxxx:stackFromEnd) not found.

错误:链接文件资源失败。

Answer 1

您在 xml 上的 recyclerview 实现是错误的:

一定是

<android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerView4"
            android:layout_width="match_parent"
            app:stackFromEnd="true"
            android:layout_height="215dp" />

在您的 Activity 文件中，您需要使用以下方式调用它:

recyclerViewSlider = (RecyclerView) findViewById(R.id.recyclerView4 );