修改图片加载工具类
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zengfantian
parent
b02a5e9b96
commit
028213e973
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@ -10,11 +10,10 @@ import android.widget.ImageView;
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import android.widget.ListView;
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import android.widget.TextView;
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import com.nostra13.universalimageloader.core.DisplayImageOptions;
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import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
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import com.zftlive.android.R;
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import com.zftlive.android.base.BaseActivity;
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import com.zftlive.android.base.BaseAdapter;
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import com.zftlive.android.tools.ToolImage;
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/**
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* 异步加载图片示例DEMO，防止图片错位
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@ -70,7 +69,6 @@ public class ImageListviewActivity extends BaseActivity {
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"多途网络科技 15K 招聘前端开发工程师",
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"携程无线前端团队招聘 直接内部推荐（携程上海总部）"
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};
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private DisplayImageOptions mDisplayImageOptions;
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private com.nostra13.universalimageloader.core.ImageLoader universalimageloader;
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@Override
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@ -84,14 +82,8 @@ public class ImageListviewActivity extends BaseActivity {
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mMyListViewAdapter = new MyListViewAdapter();
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mListView = (ListView)findViewById(R.id.lv_list);
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mDisplayImageOptions = new DisplayImageOptions.Builder()
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.showStubImage(R.drawable.ic_launcher).cacheInMemory()
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.cacheOnDisc().build();
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ImageLoaderConfiguration imageLoaderConfiguration = new ImageLoaderConfiguration.Builder(this).enableLogging().build();
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universalimageloader = com.nostra13.universalimageloader.core.ImageLoader.getInstance();
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universalimageloader.init(imageLoaderConfiguration);
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//图片异步加载器
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universalimageloader = ToolImage.initImageLoader(getApplicationContext());
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}
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@Override
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@ -142,8 +134,7 @@ public class ImageListviewActivity extends BaseActivity {
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// mImageLoader.get((String)rowData.get("imageUrl"), mImageListener);
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//异步加载图片防止错位方法二：com.nostra13.universalimageloader.core.ImageLoader
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universalimageloader.displayImage((String)rowData.get("imageUrl"), mViewHolder.iv_icon, mDisplayImageOptions);
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universalimageloader.displayImage((String)rowData.get("imageUrl"), mViewHolder.iv_icon, ToolImage.getFadeOptions(R.drawable.default_icon,R.drawable.ic_launcher,R.drawable.ic_launcher));
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mViewHolder.tv_title.setText((String)rowData.get("title"));
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return convertView;
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}
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@ -1,165 +1,138 @@
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package com.zftlive.android.tools;
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import android.content.Context;
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import android.widget.ImageView;
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import java.io.File;
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import android.content.Context;
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import android.graphics.Bitmap;
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import com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiscCache;
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import com.nostra13.universalimageloader.cache.disc.naming.HashCodeFileNameGenerator;
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import com.nostra13.universalimageloader.cache.memory.impl.UsingFreqLimitedMemoryCache;
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import com.nostra13.universalimageloader.core.DisplayImageOptions;
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import com.nostra13.universalimageloader.core.ImageLoader;
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import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
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import com.nostra13.universalimageloader.core.assist.ImageScaleType;
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import com.nostra13.universalimageloader.core.assist.QueueProcessingType;
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import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;
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import com.nostra13.universalimageloader.utils.StorageUtils;
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/**
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* 图片加载工具类
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* @author 曾繁添
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* @version 1.0
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*
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*/
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public abstract class ToolImage {
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private static ImageLoader imageLoader;
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private static DisplayImageOptions displayImageOptions;
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private static DisplayImageOptions displayImageOptions1;
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private static DisplayImageOptions displayImageOptions2;
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private static DisplayImageOptions displayImageOptions3;
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private static DisplayImageOptions displayImageOptions4;
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private static DisplayImageOptions displayImageOptions5;
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public static void init(Context context, int stubImage,
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int imageForEmptyUri, int imageOnFail) {
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ImageLoaderConfiguration imageLoaderConfiguration = new ImageLoaderConfiguration.Builder(
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context)
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// 如果图片尺寸大于了这个参数，那么就会这按照这个参数对图片大小进行限制并缓存
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// .memoryCacheExtraOptions(480, 800) // default=device screen
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// dimensions
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// .discCacheExtraOptions(480, 800, CompressFormat.JPEG, 75)
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// .taskExecutor(AsyncTask.THREAD_POOL_EXECUTOR)
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// .taskExecutorForCachedImages(AsyncTask.THREAD_POOL_EXECUTOR)
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// .threadPoolSize(3) // default
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// .threadPriority(Thread.NORM_PRIORITY - 1) // default
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// .tasksProcessingOrder(QueueProcessingType.FIFO) // default
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/**
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* 初始化ImageLoader
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*/
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public static ImageLoader initImageLoader(Context context) {
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// 获取到缓存的目录地址
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File cacheDir = StorageUtils.getOwnCacheDirectory(context,"ImageLoader/Cache");
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// 创建配置ImageLoader,可以设定在Application，设置为全局的配置参数
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ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context)
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.memoryCacheExtraOptions(480, 800)//缓存文件的最大长宽
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// Can slow ImageLoader, use it carefully (Better don't use it)设置缓存的详细信息，最好不要设置这个
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// .discCacheExtraOptions(480, 800, CompressFormat.JPEG, 75,null)
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.threadPoolSize(3)// 线程池内加载的数量
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.threadPriority(Thread.NORM_PRIORITY - 2)// 线程优先级
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/*
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* When you display an image in a small ImageView and later you
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* try to display this image (from identical URI) in a larger
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* ImageView so decoded image of bigger size will be cached in
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* memory as a previous decoded image of smaller size. So the
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* default behavior is to allow to cache multiple sizes of one
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* image in memory. You can deny it by calling this method: so
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* when some image will be cached in memory then previous cached
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* size of this image (if it exists) will be removed from memory
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* cache before.
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*/
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// .denyCacheImageMultipleSizesInMemory()
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// .memoryCache(new LruMemoryCache(2 * 1024 * 1024))
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// .memoryCacheSize(2 * 1024 * 1024)
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// .discCache(
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// new
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// LimitedAgeDiscCache(Environment.getExternalStorageDirectory(),
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// 5 * 60))
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// .discCache(new
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// UnlimitedDiscCache(Environment.getExternalStorageDirectory()))
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// .discCacheSize(50 * 1024 * 1024)
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// .discCacheFileCount(50)
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// .discCacheFileNameGenerator( new HashCodeFileNameGenerator())
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// // default
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// .imageDownloader(new BaseImageDownloader(context)) // default
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// .imageDecoder(new BaseImageDecoder()) // default
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// .defaultDisplayImageOptions(DisplayImageOptions.createSimple())
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// // default
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.enableLogging().build();
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ImageLoader.getInstance().init(imageLoaderConfiguration);
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// You can pass your own memory cache implementation
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.memoryCache(new UsingFreqLimitedMemoryCache(2 * 1024 *1024))
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.memoryCacheSize(2 * 1024 * 1024)
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.discCacheSize(20 * 1024 * 1024)// 硬盘缓存50MB
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.discCacheFileNameGenerator(new HashCodeFileNameGenerator())// 将保存的时候的URI名称用MD5
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.tasksProcessingOrder(QueueProcessingType.LIFO)
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.discCacheFileCount(100)// 缓存的File数量
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.discCache(new UnlimitedDiscCache(cacheDir))// 自定义缓存路径
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//.defaultDisplayImageOptions(DisplayImageOptions.createSimple())
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//.imageDownloader(new BaseImageDownloader(context, 5 * 1000,30 * 1000)) // connectTimeout (5 s), readTimeout (30 s)超时时间
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.build();
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// 全局初始化此配置
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imageLoader = ImageLoader.getInstance();
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displayImageOptions = new DisplayImageOptions.Builder()
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// 设置图片在下载期间显示的图片
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.showStubImage(stubImage) // 在显示真正的图片前，会加载这个资源
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// 设置图片Uri为空或是错误的时候显示的图片
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.showImageForEmptyUri(imageForEmptyUri) // 空的Url时
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// 设置图片加载/解码过程中错误时候显示的图片
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.showImageOnFail(imageOnFail)
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// .resetViewBeforeLoading() //
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// .delayBeforeLoading(1000) // 延长1000ms 加载图片 （想不出来用在什么场景下）
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// 设置下载的图片是否缓存在内存中
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.cacheInMemory()
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// 设置下载的图片是否缓存在SD卡中
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// .cacheOnDisc()
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// .preProcessor(...)
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// .postProcessor(...)
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// .extraForDownloader(...) //可以向加载器携带一些参数
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// .imageScaleType(ImageScaleType.IN_SAMPLE_POWER_OF_2) //
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// default
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// .bitmapConfig(Bitmap.Config.ARGB_8888) // default
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// .decodingOptions(...)
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// .displayer(new SimpleBitmapDisplayer()) // default
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// .handler(new Handler()) // default
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.build();
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// //设置图片在下载前是否重置，复位
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// resetViewBeforeLoading()
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// //设置图片的解码类型
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// bitmapConfig(Bitmap.Config.RGB_565)
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// //设置图片的解码配置
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// decodingOptions(android.graphics.BitmapFactory.Options
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// decodingOptions)
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// //设置图片下载前的延迟
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// delayBeforeLoading(int delayInMillis)
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// //设置额外的内容给ImageDownloader
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// extraForDownloader(Object extra)
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// //设置图片加入缓存前，对bitmap进行设置
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// preProcessor(BitmapProcessor preProcessor)
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// //设置显示前的图片，显示后这个图片一直保留在缓存中
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// postProcessor(BitmapProcessor postProcessor)
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// //设置图片以如何的编码方式显示
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// imageScaleType(ImageScaleType imageScaleType)
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}
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public static void settingInit1(int stubImage, int imageForEmptyUri,
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int imageOnFail) {
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displayImageOptions1 = new DisplayImageOptions.Builder()
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.showStubImage(stubImage)
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.showImageForEmptyUri(imageForEmptyUri)
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.showImageOnFail(imageOnFail).cacheInMemory().build();
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imageLoader.init(config);
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return imageLoader;
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}
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public static void settingInit2(int stubImage, int imageForEmptyUri,
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int imageOnFail) {
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displayImageOptions2 = new DisplayImageOptions.Builder()
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.showStubImage(stubImage)
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.showImageForEmptyUri(imageForEmptyUri)
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.showImageOnFail(imageOnFail).cacheInMemory().build();
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/**
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* 获取渐现显示选项
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* @param loadingImageResId 加载期间显示的图片
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* @param errorImageResid 加载错误时显示的图片
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* @param emptyImageResId 空图片或者解析图片出错时显示的图片
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* @return
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*/
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public static DisplayImageOptions getFadeOptions(int loadingImageResId,int errorImageResid,int emptyImageResId ) {
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DisplayImageOptions options = new DisplayImageOptions.Builder()
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//设置图片在下载期间显示的图片
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.showStubImage(loadingImageResId)
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// 设置图片加载/解码过程中错误时候显示的图片
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.showImageOnFail(errorImageResid)
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// 设置图片Uri为空或是错误的时候显示的图片
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.showImageForEmptyUri(emptyImageResId)
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// 设置下载的图片是否缓存在内存中
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.cacheInMemory()
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// 设置下载的图片是否缓存在SD卡中
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.cacheOnDisc()
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/**设置图片缩放方式：
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EXACTLY :图像将完全按比例缩小到目标大小
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EXACTLY_STRETCHED:图片会缩放到目标大小完全
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IN_SAMPLE_INT:图像将被二次采样的整数倍
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IN_SAMPLE_POWER_OF_2:图片将降低2倍，直到下一减少步骤，使图像更小的目标大小
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NONE:图片不会调整
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***/
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.imageScaleType(ImageScaleType.EXACTLY_STRETCHED)
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// 设置图片的解码类型
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.bitmapConfig(Bitmap.Config.RGB_565)
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// 设置图片下载前的延迟
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.delayBeforeLoading(100)
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// delayInMillis为你设置的延迟时间
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// 设置图片加入缓存前，对bitmap进行设置
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// .preProcessor(BitmapProcessor preProcessor)
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/**
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* 图片显示方式：
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* RoundedBitmapDisplayer（int roundPixels）设置圆角图片
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* FakeBitmapDisplayer（）这个类什么都没做
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* FadeInBitmapDisplayer（int durationMillis）设置图片渐显的时间
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* SimpleBitmapDisplayer()正常显示一张图片
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**/
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.displayer(new FadeInBitmapDisplayer(100))// 渐显--设置图片渐显的时间
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.build();
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return options;
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}
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public static void settingInit3(int stubImage, int imageForEmptyUri,
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int imageOnFail) {
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displayImageOptions3 = new DisplayImageOptions.Builder()
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.showStubImage(stubImage)
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.showImageForEmptyUri(imageForEmptyUri)
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.showImageOnFail(imageOnFail).cacheInMemory().build();
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}
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public static void settingInit4(int stubImage, int imageForEmptyUri,
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int imageOnFail) {
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displayImageOptions4 = new DisplayImageOptions.Builder()
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.showStubImage(stubImage)
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.showImageForEmptyUri(imageForEmptyUri)
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.showImageOnFail(imageOnFail).cacheInMemory().build();
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}
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public static void settingInit5(int stubImage, int imageForEmptyUri,
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int imageOnFail) {
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displayImageOptions5 = new DisplayImageOptions.Builder()
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.showStubImage(stubImage)
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.showImageForEmptyUri(imageForEmptyUri)
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.showImageOnFail(imageOnFail).cacheInMemory().build();
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}
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public static void displayImage(String url, ImageView imageView) {
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imageLoader.displayImage(url, imageView, displayImageOptions);
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}
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public static void displayImage1(String url, ImageView imageView) {
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imageLoader.displayImage(url, imageView, displayImageOptions1);
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}
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public static void displayImage2(String url, ImageView imageView) {
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imageLoader.displayImage(url, imageView, displayImageOptions2);
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}
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public static void displayImage3(String url, ImageView imageView) {
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imageLoader.displayImage(url, imageView, displayImageOptions3);
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}
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public static void displayImage4(String url, ImageView imageView) {
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imageLoader.displayImage(url, imageView, displayImageOptions4);
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}
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public static void displayImage5(String url, ImageView imageView) {
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imageLoader.displayImage(url, imageView, displayImageOptions5);
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/**
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* 获取默认显示配置选项
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*/
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public static DisplayImageOptions getDefaultOptions(){
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return DisplayImageOptions.createSimple();
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}
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/**
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* 清除缓存
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*/
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public static void clearCache() {
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imageLoader.clearMemoryCache();
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imageLoader.clearDiscCache();
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}
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public static ImageLoader getImageLoader(){
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return imageLoader;
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}
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}
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