ImageFormatOverrideExample.java

/*
 * This file provided by Facebook is for non-commercial testing and evaluation
 * purposes only.  Facebook reserves all rights not expressly granted.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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package com.facebook.fresco.samples.showcase.imageformat.override;

import android.content.Context;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.facebook.drawee.backends.pipeline.DraweeConfig;
import com.facebook.drawee.backends.pipeline.Fresco;
import com.facebook.drawee.controller.AbstractDraweeController;
import com.facebook.drawee.view.SimpleDraweeView;
import com.facebook.fresco.samples.showcase.BaseShowcaseFragment;
import com.facebook.fresco.samples.showcase.CustomImageFormatConfigurator;
import com.facebook.fresco.samples.showcase.R;
import com.facebook.fresco.samples.showcase.imageformat.color.ColorImageExample;
import com.facebook.imagepipeline.common.ImageDecodeOptions;
import com.facebook.imagepipeline.common.ImageDecodeOptionsBuilder;
import com.facebook.imagepipeline.decoder.ImageDecoder;
import com.facebook.imagepipeline.request.ImageRequestBuilder;

/**
 * Example that overrides the decoder for a given image request.
 *
 * If your decoder needs a custom {@link com.facebook.drawee.backends.pipeline.DrawableFactory}
 * to render the image, don't forget to add it when you initialize Fresco.
 * For this color example, we add this factory in
 * {@link CustomImageFormatConfigurator#addCustomDrawableFactories(Context, DraweeConfig.Builder)}.
 */
public class ImageFormatOverrideExample extends BaseShowcaseFragment {

  private static final ImageDecoder CUSTOM_COLOR_DECODER = ColorImageExample.createDecoder();

  @Nullable
  @Override
  public View onCreateView(
      LayoutInflater inflater,
      @Nullable ViewGroup container,
      @Nullable Bundle savedInstanceState) {
    return inflater.inflate(R.layout.fragment_format_override, container, false);
  }

  @Override
  public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    SimpleDraweeView simpleDraweeView = (SimpleDraweeView) view.findViewById(R.id.drawee_view);

    ImageDecodeOptions imageDecodeOptionsWithCustomDecoder = new ImageDecodeOptionsBuilder()
        .setCustomImageDecoder(CUSTOM_COLOR_DECODER)
        .build();

    AbstractDraweeController controller = Fresco.newDraweeControllerBuilder()
        .setImageRequest(
            ImageRequestBuilder.newBuilderWithResourceId(R.raw.custom_color1)
                .setImageDecodeOptions(imageDecodeOptionsWithCustomDecoder)
                .build())
        .build();
    simpleDraweeView.setController(controller);
  }

  @Override
  public int getTitleId() {
    return R.string.format_override_title;
  }
}