SimpleCommand框架ImageLoader API详解(三)

/**  * 注意: 次构造器不支持下载进度提示功能  * @param context  * @param withCache 是否支持缓存  *     false--不带缓存  *     true--支持缓存功能，默认缓存路径在外置存储缓冲目录中的picasso-big-cache文件夹中  */ public ImageLoader(Context context, boolean withCache) {  this(context, null, withCache); } /**  * 支持下载进度提示，以及设置缓存路径  * @param context  * @param listener 下载进度监听器  * @param cachePath 缓存路径字符串  */ public ImageLoader(Context context, ProgressListener listener, String cachePath) {  // TODO extend to support multiple libraries as Glide  // TODO must be initialized and kept as an member instance to avoid losing cache  Picasso.Builder builder = setupLoaderClientWithCachePath(context, listener, cachePath);  setupListener(builder);  picasso = builder.build();  picasso.setIndicatorsEnabled(BuildConfig.DEBUG);  picasso.setLoggingEnabled(BuildConfig.DEBUG); } /**  * 支持下载进度提示，以及设置缓存路径为默认路径picasso-big-cache  * @param context  * @param listener 下载进度监听器  * @param withCache 是否支持缓存  */ public ImageLoader(Context context, ProgressListener listener, boolean withCache) {  // TODO extend to support multiple libraries as Glide  // TODO must be initialized and kept as an member instance to avoid losing cache  Picasso.Builder builder = setupLoaderClient(context, listener, withCache);  setupListener(builder);  picasso = builder.build();  picasso.setIndicatorsEnabled(BuildConfig.DEBUG);  picasso.setLoggingEnabled(BuildConfig.DEBUG); }

public void shutdown() {  if (picasso == null) return;  Logger.d(Logger.TAG, "Image loader has been shutdown");  picasso.shutdown();  callback = null; }

public ImageLoader cancelRequest(ImageView imageView) {  picasso.cancelRequest(imageView);  return this; }

public ImageLoader load(final int resourceId) {  cleanResources();  this.imageResourceId = resourceId;  return this; }public ImageLoader load(final String imageUri) {  cleanResources();  this.imageUri = imageUri;  return this; }

public ImageLoader withPlaceholder(final int placeholder) {  this.placeholder = placeholder;  return this; }

public ImageLoader withErrorImage(final int errorImage) {  this.errorImage = errorImage;  return this; }

public ImageLoader withTag(final String tag) {  this.tag = tag;  return this; }public void pause(final String tag) {  if (picasso == null) return;  picasso.pauseTag(tag); }public void resume(final String tag) {  if (picasso == null) return;  picasso.resumeTag(tag); }

public ImageLoader withCallback(final Callback callback) {  this.callback = callback;  return this; }

public ImageLoader fit() {  this.fit = true;  return this; } public ImageLoader centerCrop() {  this.centerCrop = true;  return this; } public ImageLoader centerInside() {  this.centerInside = true;  return this; } public ImageLoader resize(final int widthResId, final int heightResId) {  this.widthResId = widthResId;  this.heigthResId = heightResId;  return this; }

public void into(final ImageView imageView) {  run(imageView); }