How to use

checkReady

method

in

com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView

/**
 * Called by worker task when preview image is loaded.
 */
private synchronized void onPreviewLoaded(Bitmap previewBitmap) {
  debug("onPreviewLoaded");
  if (bitmap != null || imageLoadedSent) {
    previewBitmap.recycle();
    return;
  }
  if (pRegion != null) {
    bitmap = Bitmap.createBitmap(previewBitmap, pRegion.left, pRegion.top, pRegion.width(), pRegion.height());
  } else {
    bitmap = previewBitmap;
  }
  bitmapIsPreview = true;
  if (checkReady()) {
    invalidate();
    requestLayout();
  }
}

/**
 * Called by worker task when full size image bitmap is ready (tiling is disabled).
 */
private synchronized void onImageLoaded(Bitmap bitmap, int sOrientation, boolean bitmapIsCached) {
  debug("onImageLoaded");
  // If actual dimensions don't match the declared size, reset everything.
  if (this.sWidth > 0 && this.sHeight > 0 && (this.sWidth != bitmap.getWidth() || this.sHeight != bitmap.getHeight())) {
    reset(false);
  }
  if (this.bitmap != null && !this.bitmapIsCached) {
    this.bitmap.recycle();
  }
  if (this.bitmap != null && this.bitmapIsCached && onImageEventListener!=null) {
    onImageEventListener.onPreviewReleased();
  }
  this.bitmapIsPreview = false;
  this.bitmapIsCached = bitmapIsCached;
  this.bitmap = bitmap;
  this.sWidth = bitmap.getWidth();
  this.sHeight = bitmap.getHeight();
  this.sOrientation = sOrientation;
  boolean ready = checkReady();
  boolean imageLoaded = checkImageLoaded();
  if (ready || imageLoaded) {
    invalidate();
    requestLayout();
  }
}

/**
 * Called by worker task when a tile has loaded. Redraws the view.
 */
private synchronized void onTileLoaded() {
  debug("onTileLoaded");
  checkReady();
  checkImageLoaded();
  if (isBaseLayerReady() && bitmap != null) {
    if (!bitmapIsCached) {
      bitmap.recycle();
    }
    bitmap = null;
    if (onImageEventListener != null && bitmapIsCached) {
      onImageEventListener.onPreviewReleased();
    }
    bitmapIsPreview = false;
    bitmapIsCached = false;
  }
  invalidate();
}

if (!checkReady()) {
  return;

this.sHeight = sHeight;
this.sOrientation = sOrientation;
checkReady();
if (!checkImageLoaded() && maxTileWidth > 0 && maxTileWidth != TILE_SIZE_AUTO && maxTileHeight > 0 && maxTileHeight != TILE_SIZE_AUTO && getWidth() > 0 && getHeight() > 0) {
  initialiseBaseLayer(new Point(maxTileWidth, maxTileHeight));

/**
 * Called by worker task when preview image is loaded.
 */
private synchronized void onPreviewLoaded(Bitmap previewBitmap) {
  debug("onPreviewLoaded");
  if (bitmap != null || imageLoadedSent) {
    previewBitmap.recycle();
    return;
  }
  if (pRegion != null) {
    bitmap = Bitmap.createBitmap(previewBitmap, pRegion.left, pRegion.top, pRegion.width(), pRegion.height());
  } else {
    bitmap = previewBitmap;
  }
  bitmapIsPreview = true;
  if (checkReady()) {
    invalidate();
    requestLayout();
  }
}

/**
 * Called by worker task when full size image bitmap is ready (tiling is disabled).
 */
private synchronized void onImageLoaded(Bitmap bitmap, int sOrientation, boolean bitmapIsCached) {
  debug("onImageLoaded");
  // If actual dimensions don't match the declared size, reset everything.
  if (this.sWidth > 0 && this.sHeight > 0 && (this.sWidth != bitmap.getWidth() || this.sHeight != bitmap.getHeight())) {
    reset(false);
  }
  if (this.bitmap != null && !this.bitmapIsCached) {
    this.bitmap.recycle();
  }
  if (this.bitmap != null && this.bitmapIsCached && onImageEventListener!=null) {
    onImageEventListener.onPreviewReleased();
  }
  this.bitmapIsPreview = false;
  this.bitmapIsCached = bitmapIsCached;
  this.bitmap = bitmap;
  this.sWidth = bitmap.getWidth();
  this.sHeight = bitmap.getHeight();
  this.sOrientation = sOrientation;
  boolean ready = checkReady();
  boolean imageLoaded = checkImageLoaded();
  if (ready || imageLoaded) {
    invalidate();
    requestLayout();
  }
}

/**
 * Called by worker task when a tile has loaded. Redraws the view.
 */
private synchronized void onTileLoaded() {
  debug("onTileLoaded");
  checkReady();
  checkImageLoaded();
  if (isBaseLayerReady() && bitmap != null) {
    if (!bitmapIsCached) {
      bitmap.recycle();
    }
    bitmap = null;
    if (onImageEventListener != null && bitmapIsCached) {
      onImageEventListener.onPreviewReleased();
    }
    bitmapIsPreview = false;
    bitmapIsCached = false;
  }
  invalidate();
}

if (!checkReady()) {
  return;

this.sHeight = sHeight;
this.sOrientation = sOrientation;
checkReady();
if (!checkImageLoaded() && maxTileWidth > 0 && maxTileWidth != TILE_SIZE_AUTO && maxTileHeight > 0 && maxTileHeight != TILE_SIZE_AUTO && getWidth() > 0 && getHeight() > 0) {
  initialiseBaseLayer(new Point(maxTileWidth, maxTileHeight));