Android 根据从 firebase 接收到的数据加载带有可绘制对象的 imageView

Question

根据从 Firebase 数据库接收到的字符串数据，我无法找到将图像从可绘制文件夹设置为 imageView 的方法。

我像这样从 Firebase 数据库获取值：

    DatabaseReference personsRef = FirebaseDatabase.getInstance().getReference().child("Persons");
    Query personsQuery = personsRef.orderByKey();
    FirebaseRecyclerOptions personsOptions = new FirebaseRecyclerOptions.Builder<Adapter>().setQuery(personsQuery, Adapter.class).build();
    
             mAdapter = new FirebaseRecyclerAdapter<Adapter, Tab1.MyViewHolder>(personsOptions) {
                            @Override
                            protected void onBindViewHolder(Tab1.MyViewHolder holder, final int position, final Adapter model) {
                
                                holder.setTitle(model.getTitle());
                                holder.setDate(model.getDate());
        }

            @Override
            public Tab1.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_tab1, parent, false);
                return new Tab1.MyViewHolder(view);
            }
        };

目标是根据从 Firebase 加载的数据，使用可绘制文件夹中的图像填充 RecyclerView 中的图像视图。类似于：如果从 firebase = 1 加载“title”，则将 imageView 设置为 R.drawable.thisPerson1.

Answer 1

如果标题是 0..10 这样的数字，那么您可以尝试创建 res 数组：

如果 1..10 则尝试使用 model.getTitle() - 1 等

<integer-array name="some_name">
    <item>@drawable/thisPerson1</item>
    <item>@drawable/thisPerson2</item>
    <item>@drawable/thisPerson3</item>
    <item>@drawable/thisPerson4</item>
</integer-array>

private TypedArray imagesArray = getResources().obtainTypedArray(R.array.some_name);
private int image = imagesArray.getResourceId(imagesArray.getIndex(title), defaultValue)

ImageView.setBackgroundResource(image)

imagesArray.recycle()

Answer 2

您可以将收到的字符串附加到 ImageView 资源 ID

DatabaseReference personsRef = FirebaseDatabase.getInstance().getReference().child("Persons");
Query personsQuery = personsRef.orderByKey();
FirebaseRecyclerOptions personsOptions = new FirebaseRecyclerOptions.Builder<Adapter>().setQuery(personsQuery, Adapter.class).build();

         mAdapter = new FirebaseRecyclerAdapter<Adapter, Tab1.MyViewHolder>(personsOptions) {
                        @Override
                        protected void onBindViewHolder(Tab1.MyViewHolder holder, final int position, final Adapter model) {
            
                            holder.setTitle(model.getTitle());
                            holder.setDate(model.getDate());
                            holder.yourImageView.setImageResource(R.drawable+"."+model.getImage())
    }

        @Override
        public Tab1.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycle_tab1, parent, false);
            return new Tab1.MyViewHolder(view);
        }
    };

Android 根据从 firebase 接收到的数据加载带有可绘制对象的 imageView

Android load imageView with drawable depending on data received from firebase

database

android

drawable

imageview

firebase