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 }