RecyclerView适配器中的onBackPressed()

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private OnBackPressedListener onBackPressedListener;
    
    public interface OnBackPressedListener {
        void onBackPressed();
    }
    
    public MyAdapter(OnBackPressedListener listener) {
        onBackPressedListener = listener;
    }
    
    // 其他适配器相关代码
}

public class MainActivity extends AppCompatActivity implements MyAdapter.OnBackPressedListener {
    private MyAdapter mAdapter;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        // 初始化RecyclerView和适配器
        RecyclerView recyclerView = findViewById(R.id.recyclerView);
        mAdapter = new MyAdapter(this);
        recyclerView.setAdapter(mAdapter);
        
        // 其他Activity相关代码
    }
    
    @Override
    public void onBackPressed() {
        // 处理返回键逻辑
        // 例如：关闭当前Activity或返回上一级Fragment
        // 注意：需要在适配器中调用onBackPressedListener.onBackPressed()来触发回调
    }
}