2024.5.13

第四十七天

所花时间：2小时

代码量：200

博客量：1

了解到的知识点：大作业3

图片发布以及相册权限

ImageAdapter.java

package com.example.photo1;

import android.content.Context;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.bumptech.glide.Glide;

import java.util.List;

public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.ViewHolder> {
    private List<Uri> imageUris;
    private Context context;

    public ImageAdapter(List<Uri> imageUris, Context context) {
        this.imageUris = imageUris;
        this.context = context;
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.image_item, parent, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        Uri uri = imageUris.get(position);
        Glide.with(context).load(uri).into(holder.imageView);
    }

    @Override
    public int getItemCount() {
        return imageUris.size();
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        ImageView imageView;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            imageView = itemView.findViewById(R.id.imageViewItem);
        }
    }
}

image_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="8dp">

    <ImageView
        android:id="@+id/imageViewItem"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:scaleType="centerCrop" />
</LinearLayout>