package com.andbase.demo.adapter;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.TransitionDrawable;
import android.util.DisplayMetrics;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import com.andbase.demo.activity.AlbumActivity;
import com.andbase.demo.model.ImageInfo;
import com.andbase.library.R;
import com.andbase.library.asynctask.AbTaskItem;
import com.andbase.library.asynctask.AbTaskMultiQueue;
import com.andbase.library.asynctask.AbTaskObjectListener;
import com.andbase.library.asynctask.AbTaskQueue;
import com.andbase.library.cache.image.AbImageCacheImpl;
import com.andbase.library.image.AbImageLoader;
import com.andbase.library.util.AbAppUtil;
import com.andbase.library.util.AbFileUtil;
import com.andbase.library.util.AbImageUtil;
import com.andbase.library.util.AbLogUtil;
import com.andbase.library.util.AbStrUtil;
import com.andbase.library.view.listener.AbOnClickListener;
import com.andbase.library.view.sample.AbFilterImageView;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* Copyright amsoft.cn
* Author 还如一梦中
* Date 2016/6/16 13:27
* Email 396196516@qq.com
* Info 适配器 网络URL的图片和本地,资源文件图片显示.
*/
public class AlbumGridAdapter extends BaseAdapter {
/** 上下问. */
private Context context;
/** 图片的路径. */
private List<ImageInfo> images = null;
/** 图片宽度. */
private int width;
/** 图片高度. */
private int height;
/** 滑动中. */
private boolean fling = false;
/**图片下载器*/
private AbImageLoader imageLoader = null;
private AbImageCacheImpl imageCache = null;
private AbTaskMultiQueue task;
private AdapterView.OnItemClickListener onItemClickListener;
public AlbumGridAdapter(Context context, List<ImageInfo> images, int width, int height,AbImageLoader imageLoader) {
this.context = context;
this.images = images;
this.width = width;
this.height = height;
this.imageLoader = imageLoader;
this.imageCache = new AbImageCacheImpl(context);
this.task = AbTaskMultiQueue.getInstance();
}
/**
* 获取数量.
* @return the count
*/
public int getCount() {
return images.size();
}
/**
* 获取索引位置的路径.
* @param position the position
* @return the item
*/
public Object getItem(int position) {
return images.get(position);
}
/**
* 获取位置.
* @param position the position
* @return the item id
*/
public long getItemId(int position) {
return position;
}
/**
* 显示View.
* @param position the position
* @param convertView the convert view
* @param parent the parent
* @return the view
*/
public View getView(final int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
if(convertView == null){
holder = new ViewHolder();
AbFilterImageView imageView = new AbFilterImageView(context);
imageView.setBackgroundResource(R.color.gray_light);
imageView.setLayoutParams(new GridView.LayoutParams(width, height));
imageView.setScaleType(ScaleType.CENTER_CROP);
holder.imageView = imageView;
convertView = imageView;
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
if(!fling){
if(holder.tag != position){
holder.imageView.setImageBitmap(null);
loadImage(position,holder);
}
}else{
holder.imageView.setImageBitmap(null);
}
holder.imageView.setOnClickListener(new AbOnClickListener(){
@Override
public void onClick(View view) {
if(onItemClickListener!=null){
onItemClickListener.onItemClick(null,view,position,position);
}
}
});
holder.tag = position;
return convertView;
}
/**
* 增加并改变视图.
* @param position the position
* @param imagePaths the image paths
*/
public void addItem(int position,ImageInfo imagePaths) {
images.add(position,imagePaths);
notifyDataSetChanged();
}
/**
* 增加多条并改变视图.
* @param image the image paths
*/
public void addItems(List<ImageInfo> image) {
images.addAll(image);
notifyDataSetChanged();
}
/**
* 增加多条并改变视图.
*/
public void clearItems() {
images.clear();
notifyDataSetChanged();
}
/**
* View元素.
*/
public static class ViewHolder {
public AbFilterImageView imageView;
public String imageTag;
int tag = -1;
}
public AdapterView.OnItemClickListener getOnItemClickListener() {
return onItemClickListener;
}
public void setOnItemClickListener(AdapterView.OnItemClickListener onItemClickListener) {
this.onItemClickListener = onItemClickListener;
}
public boolean isFling() {
return fling;
}
public void setFling(boolean fling) {
this.fling = fling;
}
public void loadImage(final int position,final ViewHolder holder){
final ImageInfo imageInfo = images.get(position);
final String image = imageInfo.getThumbnailsPath();
final String currentTag = image+"_"+position;
//设置标记
holder.imageTag = currentTag;
final String cacheKey = image + "w" + width + "h" + height;
if(!AbStrUtil.isEmpty(image)){
if(image.indexOf("http://")!=-1){
//图片的下载
imageLoader.display(holder.imageView,image,this.width,this.height);
}else if(AbStrUtil.isNumber(image)){
//索引图片
try {
int res = Integer.parseInt(image);
holder.imageView.setImageDrawable(context.getResources().getDrawable(res));
} catch (Exception e) {
}
}else {
Bitmap bitmap = this.imageCache.getBitmap(cacheKey);
if (bitmap != null) {
//AbLogUtil.e("TAG", "从缓存中取到了数据" + position);
holder.imageView.setImageBitmap(bitmap);
} else {
//AbLogUtil.e("TAG", "从缓存中没取到数据" + position);
final AbTaskItem item = new AbTaskItem();
item.setPosition(position);
item.setListener(new AbTaskObjectListener() {
@Override
public <T> T getObject() {
Bitmap bitmap = AbImageUtil.getThumbnail(new File(image),width, height);
return (T) bitmap;
}
@Override
public <T> void update(T t) {
if(t == null){
return;
}
Bitmap bitmap = (Bitmap) t;
AbLogUtil.e("TAG", "显示：" + position+","+bitmap.getWidth()+"x"+bitmap.getHeight());
imageCache.putBitmap(cacheKey, bitmap);
if (currentTag.equals(holder.imageTag)) {
holder.imageView.setImageBitmap(bitmap);
//AbLogUtil.e("TAG", "显示：" + position+","+bitmap);
}
}
});
task.execute(item);
}
}
}
}
}