package me.nereo.multi_image_selector.adapter;
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import android.content.Context;
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import android.graphics.Point;
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import android.os.Build;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.WindowManager;
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import android.widget.BaseAdapter;
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import android.widget.ImageView;
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import com.squareup.picasso.Picasso;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.List;
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import me.nereo.multi_image_selector.MultiImageSelectorFragment;
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import me.nereo.multi_image_selector.R;
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import me.nereo.multi_image_selector.bean.Image;
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/**
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* 图片Adapter
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* Created by Nereo on 2015/4/7.
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* Updated by nereo on 2016/1/19.
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*/
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public class ImageGridAdapter extends BaseAdapter {
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private static final int TYPE_CAMERA = 0;
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private static final int TYPE_NORMAL = 1;
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private Context mContext;
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private LayoutInflater mInflater;
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private boolean showCamera = true;
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private boolean showSelectIndicator = true;
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private List<Image> mImages = new ArrayList<>();
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private List<Image> mSelectedImages = new ArrayList<>();
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final int mGridWidth;
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public ImageGridAdapter(Context context, boolean showCamera, int column){
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mContext = context;
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mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
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this.showCamera = showCamera;
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WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
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int width = 0;
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
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Point size = new Point();
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wm.getDefaultDisplay().getSize(size);
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width = size.x;
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}else{
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width = wm.getDefaultDisplay().getWidth();
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}
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mGridWidth = width / column;
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}
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/**
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* 显示选择指示器
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* @param b
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*/
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public void showSelectIndicator(boolean b) {
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showSelectIndicator = b;
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}
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public void setShowCamera(boolean b){
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if(showCamera == b) return;
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showCamera = b;
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notifyDataSetChanged();
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}
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public boolean isShowCamera(){
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return showCamera;
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}
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/**
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* 选择某个图片，改变选择状态
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* @param image
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*/
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public void select(Image image) {
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if(mSelectedImages.contains(image)){
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mSelectedImages.remove(image);
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}else{
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mSelectedImages.add(image);
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}
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notifyDataSetChanged();
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}
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/**
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* 通过图片路径设置默认选择
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* @param resultList
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*/
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public void setDefaultSelected(ArrayList<String> resultList) {
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for(String path : resultList){
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Image image = getImageByPath(path);
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if(image != null){
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mSelectedImages.add(image);
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}
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}
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if(mSelectedImages.size() > 0){
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notifyDataSetChanged();
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}
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}
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private Image getImageByPath(String path){
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if(mImages != null && mImages.size()>0){
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for(Image image : mImages){
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if(image.path.equalsIgnoreCase(path)){
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return image;
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}
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}
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}
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return null;
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}
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/**
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* 设置数据集
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* @param images
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*/
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public void setData(List<Image> images) {
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mSelectedImages.clear();
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if(images != null && images.size()>0){
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mImages = images;
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}else{
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mImages.clear();
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}
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notifyDataSetChanged();
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}
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@Override
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public int getViewTypeCount() {
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return 2;
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}
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@Override
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public int getItemViewType(int position) {
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if(showCamera){
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return position==0 ? TYPE_CAMERA : TYPE_NORMAL;
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}
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return TYPE_NORMAL;
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}
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@Override
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public int getCount() {
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return showCamera ? mImages.size()+1 : mImages.size();
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}
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@Override
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public Image getItem(int i) {
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if(showCamera){
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if(i == 0){
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return null;
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}
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return mImages.get(i-1);
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}else{
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return mImages.get(i);
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}
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}
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@Override
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public long getItemId(int i) {
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return i;
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}
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@Override
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public View getView(int i, View view, ViewGroup viewGroup) {
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if(isShowCamera()){
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if(i == 0){
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view = mInflater.inflate(R.layout.mis_list_item_camera, viewGroup, false);
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return view;
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}
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}
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ViewHolder holder;
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if(view == null){
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view = mInflater.inflate(R.layout.mis_list_item_image, viewGroup, false);
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holder = new ViewHolder(view);
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}else{
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holder = (ViewHolder) view.getTag();
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}
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if(holder != null) {
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holder.bindData(getItem(i));
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}
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return view;
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}
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class ViewHolder {
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ImageView image;
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ImageView indicator;
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View mask;
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ViewHolder(View view){
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image = (ImageView) view.findViewById(R.id.image);
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indicator = (ImageView) view.findViewById(R.id.checkmark);
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mask = view.findViewById(R.id.mask);
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view.setTag(this);
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}
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void bindData(final Image data){
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if(data == null) return;
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// 处理单选和多选状态
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if(showSelectIndicator){
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indicator.setVisibility(View.VISIBLE);
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if(mSelectedImages.contains(data)){
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// 设置选中状态
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indicator.setImageResource(R.drawable.mis_btn_selected);
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mask.setVisibility(View.VISIBLE);
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}else{
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// 未选择
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indicator.setImageResource(R.drawable.mis_btn_unselected);
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mask.setVisibility(View.GONE);
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}
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}else{
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indicator.setVisibility(View.GONE);
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}
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File imageFile = new File(data.path);
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if (imageFile.exists()) {
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// 显示图片
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Picasso.get()
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.load(imageFile)
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.placeholder(R.drawable.mis_default_error)
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.tag(MultiImageSelectorFragment.TAG)
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.resize(mGridWidth, mGridWidth)
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.centerCrop()
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.into(image);
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}else{
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image.setImageResource(R.drawable.mis_default_error);
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}
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}
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}
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}
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