再来初始化一次

imageLoader/src/com/nostra13/universalimageloader/core/assist/ImageScaleType.java

+/*******************************************************************************
+ * Copyright 2011-2014 Sergey Tarasevich
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *******************************************************************************/
+package com.nostra13.universalimageloader.core.assist;
+
+/**
+ * Type of image scaling during decoding.
+ *
+ * @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
+ * @since 1.5.0
+ */
+public enum ImageScaleType {
+	/** Image won't be scaled */
+	NONE,
+	/**
+	 * Image will be scaled down only if image size is greater than
+	 * {@linkplain javax.microedition.khronos.opengles.GL10#GL_MAX_TEXTURE_SIZE maximum acceptable texture size}.
+	 * Usually it's 2048x2048.<br />
+	 * If Bitmap is expected to display than it must not exceed this size (otherwise you'll get the exception
+	 * "OpenGLRenderer: Bitmap too large to be uploaded into a texture".<br />
+	 * Image will be subsampled in an integer number of times (1, 2, 3, ...) to maximum texture size of device.
+	 */
+	NONE_SAFE,
+	/**
+	 * Image will be reduces 2-fold until next reduce step make image smaller target size.<br />
+	 * It's <b>fast</b> type and it's preferable for usage in lists/grids/galleries (and other
+	 * {@linkplain android.widget.AdapterView adapter-views}) .<br />
+	 * Relates to {@link android.graphics.BitmapFactory.Options#inSampleSize}<br />
+	 * Note: If original image size is smaller than target size then original image <b>won't</b> be scaled.
+	 */
+	IN_SAMPLE_POWER_OF_2,
+	/**
+	 * Image will be subsampled in an integer number of times (1, 2, 3, ...). Use it if memory economy is quite
+	 * important.<br />
+	 * Relates to {@link android.graphics.BitmapFactory.Options#inSampleSize}<br />
+	 * Note: If original image size is smaller than target size then original image <b>won't</b> be scaled.
+	 */
+	IN_SAMPLE_INT,
+	/**
+	 * Image will scaled-down exactly to target size (scaled width or height or both will be equal to target size;
+	 * depends on {@linkplain android.widget.ImageView.ScaleType ImageView's scale type}). Use it if memory economy is
+	 * critically important.<br />
+	 * <b>Note:</b> If original image size is smaller than target size then original image <b>won't</b> be scaled.<br />
+	 * <br />
+	 * <b>NOTE:</b> For creating result Bitmap (of exact size) additional Bitmap will be created with
+	 * {@link android.graphics.Bitmap#createBitmap(android.graphics.Bitmap, int, int, int, int, android.graphics.Matrix, boolean)
+	 * Bitmap.createBitmap(...)}.<br />
+	 * <b>Cons:</b> Saves memory by keeping smaller Bitmap in memory cache (comparing with IN_SAMPLE... scale types)<br />
+	 * <b>Pros:</b> Requires more memory in one time for creation of result Bitmap.
+	 */
+	EXACTLY,
+	/**
+	 * Image will scaled exactly to target size (scaled width or height or both will be equal to target size; depends on
+	 * {@linkplain android.widget.ImageView.ScaleType ImageView's scale type}). Use it if memory economy is critically
+	 * important.<br />
+	 * <b>Note:</b> If original image size is smaller than target size then original image <b>will be stretched</b> to
+	 * target size.<br />
+	 * <br />
+	 * <b>NOTE:</b> For creating result Bitmap (of exact size) additional Bitmap will be created with
+	 * {@link android.graphics.Bitmap#createBitmap(android.graphics.Bitmap, int, int, int, int, android.graphics.Matrix, boolean)
+	 * Bitmap.createBitmap(...)}.<br />
+	 * <b>Cons:</b> Saves memory by keeping smaller Bitmap in memory cache (comparing with IN_SAMPLE... scale types)<br />
+	 * <b>Pros:</b> Requires more memory in one time for creation of result Bitmap.
+	 */
+	EXACTLY_STRETCHED
+}

imageLoader/src/com/nostra13/universalimageloader/core/assist/ImageSize.java

+/*******************************************************************************
+ * Copyright 2011-2013 Sergey Tarasevich
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *******************************************************************************/
+package com.nostra13.universalimageloader.core.assist;
+
+/**
+ * Present width and height values
+ *
+ * @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
+ * @since 1.0.0
+ */
+public class ImageSize {
+
+	private static final int TO_STRING_MAX_LENGHT = 9; // "9999x9999".length()
+	private static final String SEPARATOR = "x";
+
+	private final int width;
+	private final int height;
+
+	public ImageSize(int width, int height) {
+		this.width = width;
+		this.height = height;
+	}
+
+	public ImageSize(int width, int height, int rotation) {
+		if (rotation % 180 == 0) {
+			this.width = width;
+			this.height = height;
+		} else {
+			this.width = height;
+			this.height = width;
+		}
+	}
+
+	public int getWidth() {
+		return width;
+	}
+
+	public int getHeight() {
+		return height;
+	}
+
+	/** Scales down dimensions in <b>sampleSize</b> times. Returns new object. */
+	public ImageSize scaleDown(int sampleSize) {
+		return new ImageSize(width / sampleSize, height / sampleSize);
+	}
+
+	/** Scales dimensions according to incoming scale. Returns new object. */
+	public ImageSize scale(float scale) {
+		return new ImageSize((int) (width * scale), (int) (height * scale));
+	}
+
+	@Override
+	public String toString() {
+		return new StringBuilder(TO_STRING_MAX_LENGHT).append(width).append(SEPARATOR).append(height).toString();
+	}
+}

imageLoader/src/com/nostra13/universalimageloader/core/assist/LoadedFrom.java

+package com.nostra13.universalimageloader.core.assist;
+
+/**
+ * Source image loaded from.
+ *
+ * @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
+ */
+public enum LoadedFrom {
+	NETWORK, DISC_CACHE, MEMORY_CACHE
+}

imageLoader/src/com/nostra13/universalimageloader/core/assist/QueueProcessingType.java

+/*******************************************************************************
+ * Copyright 2011-2013 Sergey Tarasevich
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *******************************************************************************/
+package com.nostra13.universalimageloader.core.assist;
+
+/**
+ * Queue processing type which will be used for display task processing
+ *
+ * @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
+ * @since 1.6.3
+ */
+public enum QueueProcessingType {
+	FIFO, LIFO
+}

imageLoader/src/com/nostra13/universalimageloader/core/assist/ViewScaleType.java

+/*******************************************************************************
+ * Copyright 2011-2013 Sergey Tarasevich
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *******************************************************************************/
+package com.nostra13.universalimageloader.core.assist;
+
+import android.widget.ImageView;
+import android.widget.ImageView.ScaleType;
+
+/**
+ * Simplify {@linkplain ScaleType ImageView's scale type} to 2 types: {@link #FIT_INSIDE} and {@link #CROP}
+ *
+ * @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
+ * @since 1.6.1
+ */
+public enum ViewScaleType {
+	/**
+	 * Scale the image uniformly (maintain the image's aspect ratio) so that at least one dimension (width or height) of
+	 * the image will be equal to or less the corresponding dimension of the view.
+	 */
+	FIT_INSIDE,
+	/**
+	 * Scale the image uniformly (maintain the image's aspect ratio) so that both dimensions (width and height) of the
+	 * image will be equal to or larger than the corresponding dimension of the view.
+	 */
+	CROP;
+
+	/**
+	 * Defines scale type of ImageView.
+	 *
+	 * @param imageView {@link ImageView}
+	 * @return {@link #FIT_INSIDE} for
+	 *         <ul>
+	 *         <li>{@link ScaleType#FIT_CENTER}</li>
+	 *         <li>{@link ScaleType#FIT_XY}</li>
+	 *         <li>{@link ScaleType#FIT_START}</li>
+	 *         <li>{@link ScaleType#FIT_END}</li>
+	 *         <li>{@link ScaleType#CENTER_INSIDE}</li>
+	 *         </ul>
+	 *         {@link #CROP} for
+	 *         <ul>
+	 *         <li>{@link ScaleType#CENTER}</li>
+	 *         <li>{@link ScaleType#CENTER_CROP}</li>
+	 *         <li>{@link ScaleType#MATRIX}</li>
+	 *         </ul>
+	 */
+	public static ViewScaleType fromImageView(ImageView imageView) {
+		switch (imageView.getScaleType()) {
+			case FIT_CENTER:
+			case FIT_XY:
+			case FIT_START:
+			case FIT_END:
+			case CENTER_INSIDE:
+				return FIT_INSIDE;
+			case MATRIX:
+			case CENTER:
+			case CENTER_CROP:
+			default:
+				return CROP;
+		}
+	}
+}

imageLoader/src/com/nostra13/universalimageloader/core/assist/deque/LIFOLinkedBlockingDeque.java

+package com.nostra13.universalimageloader.core.assist.deque;
+
+import java.util.NoSuchElementException;
+
+/**
+ * {@link LinkedBlockingDeque} using LIFO algorithm
+ * 
+ * @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
+ * @since 1.6.3
+ */
+public class LIFOLinkedBlockingDeque<T> extends LinkedBlockingDeque<T> {
+
+	private static final long serialVersionUID = -4114786347960826192L;
+
+	/**
+	 * Inserts the specified element at the front of this deque if it is possible to do so immediately without violating
+	 * capacity restrictions, returning <tt>true</tt> upon success and <tt>false</tt> if no space is currently
+	 * available. When using a capacity-restricted deque, this method is generally preferable to the {@link #addFirst
+	 * addFirst} method, which can fail to insert an element only by throwing an exception.
+	 * 
+	 * @param e
+	 *            the element to add
+	 * @throws ClassCastException
+	 *             {@inheritDoc}
+	 * @throws NullPointerException
+	 *             if the specified element is null
+	 * @throws IllegalArgumentException
+	 *             {@inheritDoc}
+	 */
+	@Override
+	public boolean offer(T e) {
+		return super.offerFirst(e);
+	}
+
+	/**
+	 * Retrieves and removes the first element of this deque. This method differs from {@link #pollFirst pollFirst} only
+	 * in that it throws an exception if this deque is empty.
+	 * 
+	 * @return the head of this deque
+	 * @throws NoSuchElementException
+	 *             if this deque is empty
+	 */
+	@Override
+	public T remove() {
+		return super.removeFirst();
+	}
+}
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