package com.lzy.imagepicker.adapter; import android.Manifest; import android.app.Activity; import android.content.Context; import android.content.res.Resources; import android.support.v4.app.ActivityCompat; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.RecyclerView.ViewHolder; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AbsListView; import android.widget.ImageView; import com.lzy.imagepicker.ImagePicker; import com.lzy.imagepicker.bean.ImageItem; import com.lzy.imagepicker.ui.ImageBaseActivity; import com.lzy.imagepicker.ui.ImageGridActivity; import com.lzy.imagepicker.util.InnerToaster; import com.lzy.imagepicker.util.Utils; import com.lzy.imagepicker.view.SuperCheckBox; import java.util.ArrayList; /** * 加载相册图片的RecyclerView适配器 * * 用于替换原项目的GridView，使用局部刷新解决选中照片出现闪动问题 * * 替换为RecyclerView后只是不再会导致全局刷新， * * 但还是会出现明显的重新加载图片，可能是picasso图片加载框架的问题 * * Author: nanchen * Email: liushilin520@foxmail.com * Date: 2017-04-05 10:04 */ public class ImageRecyclerAdapter extends RecyclerView.Adapter { private static final int ITEM_TYPE_CAMERA = 0; //第一个条目是相机 private static final int ITEM_TYPE_NORMAL = 1; //第一个条目不是相机 private ImagePicker imagePicker; private Activity mActivity; private int res_adapter_camera_item; private int res_adapter_image_list_item; private int res_iv_thumb; private int res_mask; private int res_checkView; private int res_cb_check; private int res_ip_select_limit; private ArrayList images; //当前需要显示的所有的图片数据 private ArrayList mSelectedImages; //全局保存的已经选中的图片数据 private boolean isShowCamera; //是否显示拍照按钮 private int mImageSize; //每个条目的大小 private LayoutInflater mInflater; private OnImageItemClickListener listener; //图片被点击的监听 public void setOnImageItemClickListener(OnImageItemClickListener listener) { this.listener = listener; } public interface OnImageItemClickListener { void onImageItemClick(View view, ImageItem imageItem, int position); } public void refreshData(ArrayList images) { if (images == null || images.size() == 0) this.images = new ArrayList<>(); else this.images = images; notifyDataSetChanged(); } /** * 构造方法 */ public ImageRecyclerAdapter(Activity activity, ArrayList images) { this.mActivity = activity; Context appContext = activity.getApplicationContext(); Resources resource = appContext.getResources(); String pkgName = appContext.getPackageName(); res_adapter_camera_item = resource.getIdentifier("adapter_camera_item", "layout", pkgName); res_adapter_image_list_item = resource.getIdentifier("adapter_image_list_item", "layout", pkgName); res_iv_thumb = resource.getIdentifier("iv_thumb", "id", pkgName); res_mask = resource.getIdentifier("mask", "id", pkgName); res_checkView = resource.getIdentifier("checkView", "id", pkgName); res_cb_check = resource.getIdentifier("cb_check", "id", pkgName); res_ip_select_limit = resource.getIdentifier("ip_select_limit", "string", pkgName); if (images == null || images.size() == 0) this.images = new ArrayList<>(); else this.images = images; mImageSize = Utils.getImageItemWidth(mActivity); imagePicker = ImagePicker.getInstance(); isShowCamera = imagePicker.isShowCamera(); mSelectedImages = imagePicker.getSelectedImages(); mInflater = LayoutInflater.from(activity); } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { if (viewType == ITEM_TYPE_CAMERA){ return new CameraViewHolder(mInflater.inflate(res_adapter_camera_item,parent,false)); } return new ImageViewHolder(mInflater.inflate(res_adapter_image_list_item,parent,false)); } @Override public void onBindViewHolder(ViewHolder holder, int position) { if (holder instanceof CameraViewHolder){ ((CameraViewHolder)holder).bindCamera(); }else if (holder instanceof ImageViewHolder){ ((ImageViewHolder)holder).bind(position); } } @Override public int getItemViewType(int position) { if (isShowCamera) return position == 0 ? ITEM_TYPE_CAMERA : ITEM_TYPE_NORMAL; return ITEM_TYPE_NORMAL; } @Override public long getItemId(int position) { return position; } @Override public int getItemCount() { return isShowCamera ? images.size() + 1 : images.size(); } public ImageItem getItem(int position) { if (isShowCamera) { if (position == 0) return null; return images.get(position - 1); } else { return images.get(position); } } private class ImageViewHolder extends ViewHolder{ View rootView; ImageView ivThumb; View mask; View checkView; SuperCheckBox cbCheck; ImageViewHolder(View itemView) { super(itemView); rootView = itemView; ivThumb = (ImageView) itemView.findViewById(res_iv_thumb); mask = itemView.findViewById(res_mask); checkView=itemView.findViewById(res_checkView); cbCheck = (SuperCheckBox) itemView.findViewById(res_cb_check); itemView.setLayoutParams(new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, mImageSize)); //让图片是个正方形 } void bind(final int position){ final ImageItem imageItem = getItem(position); ivThumb.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (listener != null) listener.onImageItemClick(rootView, imageItem, position); } }); checkView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { cbCheck.setChecked(!cbCheck.isChecked()); int selectLimit = imagePicker.getSelectLimit(); if (cbCheck.isChecked() && mSelectedImages.size() >= selectLimit) { InnerToaster.obj(mActivity).show(mActivity.getString(res_ip_select_limit, selectLimit)); cbCheck.setChecked(false); mask.setVisibility(View.GONE); } else { imagePicker.addSelectedImageItem(position, imageItem, cbCheck.isChecked()); mask.setVisibility(View.VISIBLE); } } }); //根据是否多选，显示或隐藏checkbox if (imagePicker.isMultiMode()) { cbCheck.setVisibility(View.VISIBLE); boolean checked = mSelectedImages.contains(imageItem); if (checked) { mask.setVisibility(View.VISIBLE); cbCheck.setChecked(true); } else { mask.setVisibility(View.GONE); cbCheck.setChecked(false); } } else { cbCheck.setVisibility(View.GONE); } imagePicker.getImageLoader().displayImage(mActivity, imageItem.path, ivThumb, mImageSize, mImageSize); //显示图片 } } private class CameraViewHolder extends ViewHolder{ View mItemView; CameraViewHolder(View itemView) { super(itemView); mItemView = itemView; } void bindCamera(){ mItemView.setLayoutParams(new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, mImageSize)); //让图片是个正方形 mItemView.setTag(null); mItemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (!((ImageBaseActivity) mActivity).checkPermission(Manifest.permission.CAMERA)) { ActivityCompat.requestPermissions(mActivity, new String[]{Manifest.permission.CAMERA}, ImageGridActivity.REQUEST_PERMISSION_CAMERA); } else { imagePicker.takePicture(mActivity, ImagePicker.REQUEST_CODE_TAKE); } } }); } } }