RecyclerView rvList = findViewById(R.id.rv_list); rvList.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() { @Override public boolean onItemLongClick(RecyclerView recyclerView, View view, int i, long l) { ShowData item = (ShowData) recyclerView.getAdapter().getItemId(i); if (!isStarted) { modeDialog(item); } else { CustomToast.showLoad(MainActivity.this, getString(R.string.please_stop_read), 2000); } return true; } });Unable to start activity ComponentInfo{com.ives.upcrfid_zebra/com.ives.upcrfid_zebra.MainActivity}: java.lang.ClassCastException: androidx.recyclerview.widget.RecyclerView cannot be cast to android.widget.ListView

这段代码中出现了类型转换异常，原因是在代码中将 RecyclerView 对象强制转换成了 ListView 对象。解决方法是修改代码，将 RecyclerView 和对应的 Adapter 类型进行匹配，例如：

RecyclerView rvList = findViewById(R.id.rv_list);
rvList.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
    @Override
    public boolean onItemLongClick(RecyclerView recyclerView, View view, int i, long l) {
        ShowDataAdapter adapter = (ShowDataAdapter) recyclerView.getAdapter();
        ShowData item = adapter.getItem(i);
        if (!isStarted) {
            modeDialog(item);
        } else {
            CustomToast.showLoad(MainActivity.this, getString(R.string.please_stop_read), 2000);
        }
        return true;
    }
});

其中 `ShowDataAdapter` 是你自定义的 RecyclerView Adapter 类型，`ShowData` 是 Adapter 中数据项的类型。