Android-Universal-Image-Loader加载图片

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

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