Android-Universal-Image-Loader加载图片

梦里梦外; 2024-02-17 16:00 9阅读 0赞

直接看代码：MainActivity：

package com.example.textwsjdemo;
    
    import com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator;
    import com.nostra13.universalimageloader.core.DisplayImageOptions;
    import com.nostra13.universalimageloader.core.ImageLoader;
    import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
    import com.nostra13.universalimageloader.core.assist.QueueProcessingType;
    import com.nostra13.universalimageloader.core.display.RoundedBitmapDisplayer;
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.Button;
    import android.widget.ImageView;
    
    
    public class MainActivity extends Activity {
    
        private String url;
    	private Button bt_hehe;
    	private ImageView iv_photo;
    	private DisplayImageOptions defaultOptions;
    	private ImageLoaderConfiguration config;
    
    	@Override
    
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            
            initView();
            
            
            defaultOptions = new DisplayImageOptions.Builder()
            .showStubImage(R.drawable.ic_launcher)         //加载开始默认的图片      
            .showImageForEmptyUri(R.drawable.ic_launcher)     //url爲空會显示该图片，自己放在drawable里面的
            .showImageOnFail(R.drawable.ic_launcher)    //加载图片出现问题，会显示该图片
            .cacheInMemory(true)     //缓存用  fslae 不缓存
            .cacheOnDisc(true)      //缓存用
            .displayer(new RoundedBitmapDisplayer(5))  //图片圆角显示，值为整数
            .build();
            
            config = new ImageLoaderConfiguration.Builder(MainActivity.this)
            .defaultDisplayImageOptions(defaultOptions)
            .threadPriority(Thread.NORM_PRIORITY - 2)
            .denyCacheImageMultipleSizesInMemory()
            .discCacheFileNameGenerator(new Md5FileNameGenerator())
            .tasksProcessingOrder(QueueProcessingType.LIFO)
    //        .enableLogging() // Not necessary in common
            .build();
            ImageLoader.getInstance().init(config);
            
            
        }
    
    	private void initView() {
    		//图片URL
    		url = "http://file.koolearn.com/20131018/1382077932449.jpg";
    		bt_hehe = (Button) findViewById(R.id.bt_hehe);
    		iv_photo = (ImageView) findViewById(R.id.iv_photo);
    		
    		bt_hehe.setOnClickListener(new OnClickListener() {
    			
    			@Override
    			public void onClick(View v) {
    				// TODO Auto-generated method stub
    				ImageLoader.getInstance().displayImage(url,iv_photo, defaultOptions); //url为图片地址，iv_photo 为ImageView布局，
    			}
    		});
    	}
    
    
        
    
    
    }

就这点代码就可以实现加载网络图片，导入Image-Loader 的jar包即可

Image-Loader下载： https://github.com/nostra13/Android-Universal-Image-Loader