Java DrawableRequestBuilder.fitCenter方法代码示例

import com.bumptech.glide.DrawableRequestBuilder; //导入方法依赖的package包/类
/**
 * DrawableRequestBuilder 的通行配置
 * @param ctx 上下文
 * @param img ImageLoader封装器
 * @param typeRequest url or resource
 * @param <T> String or Integer
 * @return DrawableRequestBuilder<T>
 */
private <T> DrawableRequestBuilder<T> getDrawableRequestBuilder(Context ctx, ImageLoader img, DrawableTypeRequest<T> typeRequest) {
    DrawableRequestBuilder<T> builder = typeRequest
            .placeholder(img.placeHolder)
            .error(img.errorHolder)
            .diskCacheStrategy(DiskCacheStrategy.ALL);

    // transform image type
    int transType = img.transType;
    if (transType == LoaderConfig.TRANS_CIRCLE) {
        builder = builder.transform(new GlideCircleTransform(ctx));
    } else if (transType == LoaderConfig.TRANS_ROUND) {
        builder = builder.transform(new GlideRoundTransform(ctx));
    }

    // SCALE type
    if (img.scaleType == LoaderConfig.SCALE_CENTER_CROP) {
        builder = builder.centerCrop();
    } else if (img.scaleType == LoaderConfig.SCALE_FIT_CENTER) {
        builder = builder.fitCenter();
    }
    return builder;
}
 

import com.bumptech.glide.DrawableRequestBuilder; //导入方法依赖的package包/类
@Override
    public void loadImage(Context ctx, GlideImageConfig config) {
        if (ctx == null) throw new IllegalStateException("Context is required");
        if (config == null) throw new IllegalStateException("GlideImageConfig is required");
        //这里不抛异常空的就显示默认图片
//        if (TextUtils.isEmpty(config.getUrl())) throw new IllegalStateException("url is required");
        if (config.getImageView() == null) throw new IllegalStateException("imageview is required");


        RequestManager manager;

        manager = Glide.with(ctx);//如果context是activity则自动使用Activity的生命周期

        DrawableRequestBuilder<String> requestBuilder = manager.load(config.getUrl())
                .centerCrop();

        if (config.fitCenter()) {
            requestBuilder.fitCenter();
        }

        if (config.dontAnimation()) {
            requestBuilder.dontAnimate();
        } else {
            requestBuilder.crossFade();
        }

        switch (config.getCacheStrategy()) {//缓存策略
            case 0:
                requestBuilder.diskCacheStrategy(DiskCacheStrategy.ALL);
                break;
            case 1:
                requestBuilder.diskCacheStrategy(DiskCacheStrategy.NONE);
                break;
            case 2:
                requestBuilder.diskCacheStrategy(DiskCacheStrategy.SOURCE);
                break;
            case 3:
                requestBuilder.diskCacheStrategy(DiskCacheStrategy.RESULT);
                break;
        }

        if (config.getTransformation() != null) {//glide用它来改变图形的形状
            requestBuilder.transform(config.getTransformation());
        }

        //设置占位符
        if (config.getPlaceholder() != null) {
            requestBuilder.placeholder(config.getPlaceholder());
        } else if (config.getPlaceholderResId() != 0) {
            requestBuilder.placeholder(config.getPlaceholderResId());
        }

        if (config.getErrorPic() != 0)//设置错误的图片
            requestBuilder.error(config.getErrorPic());

        requestBuilder.skipMemoryCache(config.skipMemoryCache());

        requestBuilder.into(config.getImageView());
    }
 

import com.bumptech.glide.DrawableRequestBuilder; //导入方法依赖的package包/类
private DrawableRequestBuilder build() {
  DrawableTypeRequest drawableTypeRequest;

  glide.resumeRequestsRecursive();

  if (!TextUtils.isEmpty(url)) {
    drawableTypeRequest = glide.load(url);
  } else if (resourceId != 0) {
    drawableTypeRequest = glide.load(resourceId);
  } else {
    return null;
  }
  GifTypeRequest gifTypeRequest = drawableTypeRequest.asGif();
  mGifRequest = gifTypeRequest.clone();

  DrawableRequestBuilder drawableRequestBuilder = drawableTypeRequest.clone();

  if (placeholder != null) {
    drawableRequestBuilder = drawableRequestBuilder.placeholder(placeholder);
  }

  if (error != null) {
    drawableRequestBuilder = drawableRequestBuilder.error(error);
  }

  if (width > 0 && height > 0) {
    drawableRequestBuilder = drawableRequestBuilder.override(width, height);
  }

  if (bitmapTransformation != null) {
    Transformation[] bitmapTransformationsAux = new Transformation[bitmapTransformation.size()];
    for (int i = 0; i < bitmapTransformation.size(); i++) {
      bitmapTransformationsAux[i] = bitmapTransformation.get(i);
    }
    drawableRequestBuilder = drawableRequestBuilder.bitmapTransform(bitmapTransformationsAux);
  }
  if (centerCrop) {
    drawableRequestBuilder = drawableRequestBuilder.centerCrop();
  }
  if (fitCenter) {
    drawableRequestBuilder = drawableRequestBuilder.fitCenter();
  }
  if (animate) {
    drawableRequestBuilder = drawableRequestBuilder.animate(android.R.anim.slide_in_left);
  }
  if (sizeMultiplier > 0) {
    drawableRequestBuilder = drawableRequestBuilder.sizeMultiplier(sizeMultiplier);
  }

  return drawableRequestBuilder;
}