ImageLoader加载图片

1.配置ImageLoader,在清单文件中配置App的name

 1 package com.jingle.imageloaderstudy.app;
 2 
 3 import com.nostra13.universalimageloader.core.ImageLoader;
 4 import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
 5 import com.nostra13.universalimageloader.core.assist.QueueProcessingType;
 6 
 7 import android.app.Application;
 8 import android.content.res.Configuration;
 9 import android.util.Log;
10 
11 public class MyApp extends Application {
12     public static ImageLoader imgLoader;
13 
14     @Override
15     public void onCreate() {
16         // TODO Auto-generated method stub
17         super.onCreate();
18         Log.i("yy", "app create!!!");
19 
20         //1.未缓存图片
21         ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(
22                 getApplicationContext())
23                 .threadPriority(Thread.NORM_PRIORITY - 2)
24                 .denyCacheImageMultipleSizesInMemory()
25                 .tasksProcessingOrder(QueueProcessingType.LIFO).build();
26         imgLoader = ImageLoader.getInstance();
27         imgLoader.init(config);
28     }
29 
30 }

2.加载网络图片

 1 package com.jingle.imageloaderstudy.activity;
 2 
 3 import com.jingle.imageloaderstudy.R;
 4 import com.jingle.imageloaderstudy.app.MyApp;
 5 import android.app.Activity;
 6 import android.os.Bundle;
 7 import android.util.Log;
 8 import android.view.View;
 9 import android.view.View.OnClickListener;
10 import android.widget.Button;
11 import android.widget.ImageView;
12 
13 public class MainActivity extends Activity {
14     private ImageView img;
15 
16     String uri = "http://img13.360buyimg.com/da/jfs/t790/337/331050216/13395/5d79dbdb/55152d13Na6544d7d.jpg";
17 
18     @Override
19     protected void onCreate(Bundle savedInstanceState) {
20         super.onCreate(savedInstanceState);
21         setContentView(R.layout.activity_main);
22 
23         Log.i("yy", "activity create");
24         initImg();
25         initBtnLoadImg();
26     }
27 
28     private void initImg() {
29         img = (ImageView) findViewById(R.id.img);
30     }
31 
32     private void initBtnLoadImg() {
33         Button btn = (Button) findViewById(R.id.btn);
34         btn.setOnClickListener(new OnClickListener() {
35 
36             @Override
37             public void onClick(View v) {
38                 LoadImg();
39             }
40         });
41     }
42 
43     private void LoadImg() {
44         img.setBackground(null);
45         MyApp.imgLoader.displayImage(uri, img);
46 
47     }
48 
49 }