<key>JVMCapabilities</key>
    <array>
<string>CommandLine</string>
</array>

<key>JVMCapabilities</key>
<array>
    <string>JNI</string>
    <string>BundledApp</string>
    <string>WebStart</string>
    <string>Applets</string>
    <string>CommandLine</string>
</array>

<manifest>
    <uses-permission android:name="android.permission.INTERNET" />
    <!-- Include next permission if you want to allow UIL to cache images on SD card -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    ...
    <application android:name="MyApplication">
    ...
    </application>
</manifest>

public class MyApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        // Create global configuration and initialize ImageLoader with this configuration
        ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(getApplicationContext())
            ...
            .build();
        ImageLoader.getInstance().init(config);
    }
}

File cacheDir = StorageUtils.getCacheDirectory(context);
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context)
    //如果图片尺寸大于了这个参数，那么就会这按照这个参数对图片大小进行限制并缓存
    .memoryCacheExtraOptions(480, 800) // default=device screen dimensions
    .discCacheExtraOptions(480, 800, CompressFormat.JPEG, 75)
    .taskExecutor(AsyncTask.THREAD_POOL_EXECUTOR)
    .taskExecutorForCachedImages(AsyncTask.THREAD_POOL_EXECUTOR)
    .threadPoolSize(3) // default
    .threadPriority(Thread.NORM_PRIORITY - 1) // default
    .tasksProcessingOrder(QueueProcessingType.FIFO) // default
    .denyCacheImageMultipleSizesInMemory()
    .memoryCache(new LruMemoryCache(2 * 1024 * 1024))
    .memoryCacheSize(2 * 1024 * 1024)
    .discCache(new UnlimitedDiscCache(cacheDir)) // default
    .discCacheSize(50 * 1024 * 1024)
    .discCacheFileCount(100)
    .discCacheFileNameGenerator(new HashCodeFileNameGenerator()) // default
    .imageDownloader(new BaseImageDownloader(context)) // default
    .imageDecoder(new BaseImageDecoder()) // default
    .defaultDisplayImageOptions(DisplayImageOptions.createSimple()) // default
    .enableLogging()
    .build();

DisplayImageOptions options = new DisplayImageOptions.Builder()
    .showStubImage(R.drawable.ic_stub)  // 在显示真正的图片前，会加载这个资源
    .showImageForEmptyUri(R.drawable.ic_empty) //空的Url时
    .showImageOnFail(R.drawable.ic_error) 
    .resetViewBeforeLoading() // 
    .delayBeforeLoading(1000)     // 延长1000ms 加载图片  （想不出来用在什么场景下）
    .cacheInMemory()              
    .cacheOnDisc()               
    .preProcessor(...)            
    .postProcessor(...)           
    .extraForDownloader(...)      //可以向加载器携带一些参数 
    .imageScaleType(ImageScaleType.IN_SAMPLE_POWER_OF_2) // default  
    .bitmapConfig(Bitmap.Config.ARGB_8888) // default
    .decodingOptions(...)
    .displayer(new SimpleBitmapDisplayer()) // default
    .handler(new Handler()) // default
    .build();

String imageUri = "http://site.com/image.png"; // from Web
String imageUri = "file:///mnt/sdcard/image.png"; // from SD card
String imageUri = "content://media/external/audio/albumart/13"; // from content     provider
String imageUri = "assets://image.png"; // from assets
String imageUri = "drawable://" + R.drawable.image; // from drawables (only images, non-9patch)

// Load image, decode it to Bitmap and display Bitmap in ImageView
imageLoader.displayImage(imageUri, imageView, displayOptions, 
new ImageLoadingListener() {
    @Override
    public void onLoadingStarted(String imageUri, View view) {
        ...
    }
    @Override
    public void onLoadingFailed(String imageUri, View view, FailReason failReason) {
        ...
    }
    @Override
    public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
        ...
    }    
    @Override
    public void onLoadingCancelled(String imageUri, View view) {
        ...
    }
});


ImageSize targetSize = new ImageSize(120, 80); // result Bitmap will be fit to this size
imageLoader.loadImage(imageUri, targetSize, displayOptions, new     SimpleImageLoadingListener() {
    @Override
    public void onLoadingComplete(String imageUri, View view, Bitmap loadedImage) {
        // Do whatever you want with Bitmap
    }
});

int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
Log.d("TAG", "Max memory is " + maxMemory + "KB");

BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(getResources(), R.id.myimage, options);
int imageHeight = options.outHeight;
int imageWidth = options.outWidth;
String imageType = options.outMimeType;

public static int calculateInSampleSize(BitmapFactory.Options options,
                int reqWidth, int reqHeight) {
    // 源图片的高度和宽度
    final int height = options.outHeight;
    final int width = options.outWidth;
    int inSampleSize = 1;
    if (height > reqHeight || width > reqWidth) {
        // 计算出实际宽高和目标宽高的比率
        final int heightRatio = Math.round((float) height / (float) reqHeight);
        final int widthRatio = Math.round((float) width / (float) reqWidth);
        // 选择宽和高中最小的比率作为inSampleSize的值，这样可以保证最终图片的宽和高
        // 一定都会大于等于目标的宽和高。
        inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
    }
    return inSampleSize;
}

public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId,
        int reqWidth, int reqHeight) {
        // 第一次解析将inJustDecodeBounds设置为true，来获取图片大小
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeResource(res, resId, options);
    // 调用上面定义的方法计算inSampleSize值
    options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
    // 使用获取到的inSampleSize值再次解析图片
    options.inJustDecodeBounds = false;
    return BitmapFactory.decodeResource(res, resId, options);
}

mImageView.setImageBitmap(
    decodeSampledBitmapFromResource(getResources(), R.id.myimage, 100, 100));

private LruCache<String, Bitmap> mMemoryCache;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // 获取到可用内存的最大值，使用内存超出这个值会引起OutOfMemory异常。
    // LruCache通过构造函数传入缓存值，以KB为单位。
    int maxMemory = (int) (Runtime.getRuntime().maxMemory() / 1024);
    // 使用最大可用内存值的1/8作为缓存的大小。
    int cacheSize = maxMemory / 8;
    mMemoryCache = new LruCache<String, Bitmap>(cacheSize) {
        @Override
        protected int sizeOf(String key, Bitmap bitmap) {
                // 重写此方法来衡量每张图片的大小，默认返回图片数量。
                return bitmap.getByteCount() / 1024;
        }
    };
}

public void addBitmapToMemoryCache(String key, Bitmap bitmap) {
    if (getBitmapFromMemCache(key) == null) {
            mMemoryCache.put(key, bitmap);
    }
}

public Bitmap getBitmapFromMemCache(String key) {
    return mMemoryCache.get(key);
}

public void loadBitmap(int resId, ImageView imageView) {
    final String imageKey = String.valueOf(resId);
    final Bitmap bitmap = getBitmapFromMemCache(imageKey);
    if (bitmap != null) {
        imageView.setImageBitmap(bitmap);
    } else {
        imageView.setImageResource(R.drawable.image_placeholder);
        BitmapWorkerTask task = new BitmapWorkerTask(imageView);
        task.execute(resId);
    }
}

class BitmapWorkerTask extends AsyncTask<Integer, Void, Bitmap> {
    // 在后台加载图片。
    @Override
    protected Bitmap doInBackground(Integer... params) {
        final Bitmap bitmap = decodeSampledBitmapFromResource(
                        getResources(), params[0], 100, 100);
        addBitmapToMemoryCache(String.valueOf(params[0]), bitmap);
        return bitmap;
    }
}

frame_loading.xml
<?xml version="1.0" encoding="UTF-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
    android:oneshot="false" >

    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_01"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_02"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_03"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_04"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_05"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_06"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_07"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_08"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_09"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_10"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_11"
            android:gravity="left" />
    </item>
    <item android:duration="150">
        <clip
            android:clipOrientation="horizontal"
            android:drawable="@drawable/loading_12"
            android:gravity="left" />
    </item>

</animation-list>

<ProgressBar
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:indeterminateDrawable="@drawable/frame_loading" />

rotate_loading.xml
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
    android:fromDegrees="0"
    android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toDegrees="360" >

    <bitmap
        android:antialias="true"
        android:filter="true"
        android:src="@drawable/loading_360" />

</rotate>

<ProgressBar
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:indeterminateDrawable="@drawable/rotate_loading" />

public class CustomClipLoading extends FrameLayout {

	private static final int MAX_PROGRESS = 10000;
	private ClipDrawable mClipDrawable;
	private int mProgress = 0;
	private boolean running;
	private Handler handler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			// 如果消息是本程序发送的
			if (msg.what == 0x123) {
				mClipDrawable.setLevel(mProgress);
			}
		}
	};

	
	public CustomClipLoading(Context context) {
		this(context, null, 0);
	}

	public CustomClipLoading(Context context, AttributeSet attrs) {
		this(context, attrs, 0);
	}

	public CustomClipLoading(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		init(context);
	}

	private void init(Context context) {
		View view = LayoutInflater.from(context).inflate(layout.custom_loading, null);
		addView(view);
		ImageView imageView = (ImageView) findViewById(id.iv_progress);
		mClipDrawable = (ClipDrawable) imageView.getDrawable();
		
		Thread s = new Thread(r);
		s.start();
	}

	public void stop() {
		mProgress = 0;
		running = false;
	}

	Runnable r = new Runnable() {
		@Override
		public void run() {
			running = true;
			while (running) {
				handler.sendEmptyMessage(0x123);
				if (mProgress > MAX_PROGRESS) {
					mProgress = 0;
				}
				mProgress += 100;
				try {
					Thread.sleep(18);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
		}
	};
}

custom_loading.xml
<?xml version="1.0" encoding="utf-8"?>
<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/iv_progress"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:background="@drawable/loading_bg"
    android:paddingLeft="3dp"
    android:paddingTop="3dp"
    android:scaleType="centerInside"
    android:src="@drawable/clip_loading" />

clip_loading.xml
<?xml version="1.0" encoding="utf-8"?>
<clip xmlns:android="http://schemas.android.com/apk/res/android"
    android:clipOrientation="vertical"
    android:drawable="@drawable/loading_progress"
    android:gravity="bottom" >
</clip>

<com.storm.ui.CustomClipLoading
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />