在Recyclerview中更改其他项目中按钮的可见性,可以通过以下步骤实现:
以下是一个示例代码:
// 定义适配器中的接口
public interface ButtonVisibilityListener {
void onButtonVisibilityChanged(int position, boolean isVisible);
}
// 适配器中的ViewHolder
public class MyViewHolder extends RecyclerView.ViewHolder {
private Button myButton;
public MyViewHolder(View itemView) {
super(itemView);
myButton = itemView.findViewById(R.id.button);
}
public void setButtonVisibility(boolean isVisible) {
myButton.setVisibility(isVisible ? View.VISIBLE : View.GONE);
}
}
// 适配器
public class MyAdapter extends RecyclerView.Adapter<MyViewHolder> {
private List<Item> itemList;
private ButtonVisibilityListener visibilityListener;
public MyAdapter(List<Item> itemList) {
this.itemList = itemList;
}
public void setButtonVisibilityListener(ButtonVisibilityListener listener) {
this.visibilityListener = listener;
}
@NonNull
@Override
public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(@NonNull MyViewHolder holder, final int position) {
final Item item = itemList.get(position);
holder.myButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (visibilityListener != null) {
visibilityListener.onButtonVisibilityChanged(position, !item.isButtonVisible());
}
}
});
}
@Override
public int getItemCount() {
return itemList.size();
}
}
// 在Activity或Fragment中实现接口
public class MainActivity extends AppCompatActivity implements ButtonVisibilityListener {
private RecyclerView recyclerView;
private MyAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = findViewById(R.id.recyclerView);
// 初始化适配器和数据
adapter = new MyAdapter(itemList);
adapter.setButtonVisibilityListener(this);
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
}
@Override
public void onButtonVisibilityChanged(int position, boolean isVisible) {
// 根据position获取目标项目的ViewHolder
MyViewHolder viewHolder = (MyViewHolder) recyclerView.findViewHolderForAdapterPosition(position);
if (viewHolder != null) {
viewHolder.setButtonVisibility(isVisible);
}
}
}
这样,在Recyclerview中点击按钮时,可以通过接口回调通知Activity或Fragment,然后通过获取ViewHolder来改变其他项目中按钮的可见性。
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