Imageloder for image loading and caching in Android development _android

Picture Processing class:

Package com.longfei.admin.imageloder_text;
Import android.app.Application;
Import Android.graphics.Bitmap;
 
Import android.os.Environment;
Import Com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiscCache;
Import Com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator;
Import Com.nostra13.universalimageloader.cache.memory.impl.UsingFreqLimitedMemoryCache;
Import com.nostra13.universalimageloader.core.DisplayImageOptions;
Import Com.nostra13.universalimageloader.core.ImageLoader;
Import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
Import Com.nostra13.universalimageloader.core.assist.ImageScaleType;
Import Com.nostra13.universalimageloader.core.assist.QueueProcessingType;
Import Com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer;
Import Com.nostra13.universalimageloader.core.display.RoundedBitmapDisplayer;
 
Import Com.nostra13.universalimageloader.core.download.BaseImageDownloader;
 
Import Java.io.File; /** * Created by admin on 2016/4/9. */public class Imageloading extends application {@Override public void onCreate () {//TODO auto-generated Metho
    D stub super.oncreate (); imageloaderconfiguration config = new Imageloaderconfiguration.builder (this). Memorycacheextraoptions (480 /Max width, max height, that is, the maximum length of each cached file saved. disccacheextraoptions (i, A, null)
            Can slow imageloader, use it carefully (Better don ' t use//IT)/set cache details, preferably not set this. ThreadPoolSize (3)
        Number of lines Cheng Chinega loaded. ThreadPriority (thread.norm_priority-2). Denycacheimagemultiplesizesinmemory ()
            . MemoryCache (New Usingfreqlimitedmemorycache (2 * 1024 * 1024))//You can pass your own memory cache implementation/you can implement it through your own memory cache. Memorycachesize (2 * 1024 * 1024). Disccachesize (50 * 1024 * 1 024). Disccachefilenamegenerator (New Md5filenamegenerator ())//when will be savedThe URI name you designate is encrypted with MD5. Tasksprocessingorder (Queueprocessingtype.lifo). Disccachefilecount (100)//Cached Number of files. Disccache (new Unlimiteddisccache (environment. Getexternalstoragedirect Ory () + "/myapp/imgcache"))//Custom cache path. Defaultdisplayimageoptions (Getdisplayoptions ( ). Imagedownloader (New Baseimagedownloader (this, 5 * 1000, * 1000)). Writedebuglogs ()//
  Start building Imageloader.getinstance (). init (config) with the Remove for release app. build ();
    Private Displayimageoptions getdisplayoptions () {displayimageoptions options;
        options = new Displayimageoptions.builder (). showimageonloading (R.drawable.ic_launcher)//Set picture displayed during download  . Showimageforemptyuri (R.drawable.ic_launcher)//sets the picture that appears when the picture URI is empty or wrong. Showimageonfail (R.drawable.ic_launcher)// Sets the picture to be displayed when the picture is loaded/decoded during the error. Cacheinmemory (TRUE)/sets whether the downloaded picture is slow to exist in memory. CACHeondisc (TRUE)/set whether the downloaded picture is slow to exist in the SD card. Considerexifparams (TRUE)/whether to consider the JPEG image exif parameter (rotate, flip). Imagescaletype (Ima gescaletype.exactly_stretched)//sets how the picture is displayed in the encoded manner. Bitmapconfig (Bitmap.Config.RGB_565)//Set the decoding type of the picture//// 
            . delaybeforeloading (int delayinmillis)//int//Delayinmillis set up before downloading the delay time/set picture before adding the cache to the bitmap
        . Preprocessor (Bitmapprocessor preprocessor). Resetviewbeforeloading (TRUE)//Set whether the picture is reset before downloading, reset . Displayer (New Roundedbitmapdisplayer (20))//is set to rounded, radian is how much. Displayer (new Fadeinbitmapdisplayer (100))/whether the picture is loaded well
  The animation time of the Fade. Build ();//construct complete return options;
 
}} package Com.longfei.admin.imageloder_text;
Import android.app.Activity;
Import Android.graphics.Bitmap;
Import Android.os.Bundle;
Import Android.util.Log;
Import Android.view.View;
 
Import Android.widget.ImageView;
Import Com.nostra13.universalimageloader.core.ImageLoader; Import Com.nostra13.universalimageloader.core.assiSt.
Failreason;
 
 
 
Import Com.nostra13.universalimageloader.core.listener.ImageLoadingListener; /** * 1, universal-imageloader configuration * * 2, with universal-imageloader load network pictures and local pictures * * @author Administrator/Public cl
  Ass Mainactivity extends Activity {private Imageloader loader;
 
  Private ImageView iv_img;
    @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
 
    Setcontentview (R.layout.activity_main);
 
    Loader=imageloader.getinstance (),//instantiated Imageloder iv_img= (ImageView) Findviewbyid (r.id.iv_img);
 
    String url= "file:///" + "load local picture";
 
    Load network picture, the first parameter is path//Loader.displayimage ("yun_qi_img/logo.gif?t=1419303093000", iv_img); Loader.displayimage ("yun_qi_img/logo.gif?t=1419303093000", Iv_img, New Imageloadinglistener () {@Override Publ
 
      IC void onloadingstarted (String s, view view) {log.i ("info", "load Start"); @Override public void onloadingfailed (String s, view view, FAILREason Failreason) {log.i ("info", "Load Failed"); @Override public void Onloadingcomplete (String s, view view, Bitmap Bitmap) {log.i ("info", "loaded")
 
      ;
 
      @Override public void onloadingcancelled (String s, view view) {log.i ("info", "load cancellation");
  }
    });
 }
}