| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * 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.example.android.bitmapfun.ui; |
| |
| import android.os.Bundle; |
| import android.support.v4.app.Fragment; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.View.OnClickListener; |
| import android.view.ViewGroup; |
| import android.widget.ImageView; |
| |
| import com.example.android.bitmapfun.R; |
| import com.example.android.bitmapfun.util.ImageFetcher; |
| import com.example.android.bitmapfun.util.ImageWorker; |
| import com.example.android.bitmapfun.util.Utils; |
| |
| /** |
| * This fragment will populate the children of the ViewPager from {@link ImageDetailActivity}. |
| */ |
| public class ImageDetailFragment extends Fragment { |
| private static final String IMAGE_DATA_EXTRA = "extra_image_data"; |
| private String mImageUrl; |
| private ImageView mImageView; |
| private ImageFetcher mImageFetcher; |
| |
| /** |
| * Factory method to generate a new instance of the fragment given an image number. |
| * |
| * @param imageUrl The image url to load |
| * @return A new instance of ImageDetailFragment with imageNum extras |
| */ |
| public static ImageDetailFragment newInstance(String imageUrl) { |
| final ImageDetailFragment f = new ImageDetailFragment(); |
| |
| final Bundle args = new Bundle(); |
| args.putString(IMAGE_DATA_EXTRA, imageUrl); |
| f.setArguments(args); |
| |
| return f; |
| } |
| |
| /** |
| * Empty constructor as per the Fragment documentation |
| */ |
| public ImageDetailFragment() {} |
| |
| /** |
| * Populate image using a url from extras, use the convenience factory method |
| * {@link ImageDetailFragment#newInstance(String)} to create this fragment. |
| */ |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| mImageUrl = getArguments() != null ? getArguments().getString(IMAGE_DATA_EXTRA) : null; |
| } |
| |
| @Override |
| public View onCreateView(LayoutInflater inflater, ViewGroup container, |
| Bundle savedInstanceState) { |
| // Inflate and locate the main ImageView |
| final View v = inflater.inflate(R.layout.image_detail_fragment, container, false); |
| mImageView = (ImageView) v.findViewById(R.id.imageView); |
| return v; |
| } |
| |
| @Override |
| public void onActivityCreated(Bundle savedInstanceState) { |
| super.onActivityCreated(savedInstanceState); |
| |
| // Use the parent activity to load the image asynchronously into the ImageView (so a single |
| // cache can be used over all pages in the ViewPager |
| if (ImageDetailActivity.class.isInstance(getActivity())) { |
| mImageFetcher = ((ImageDetailActivity) getActivity()).getImageFetcher(); |
| mImageFetcher.loadImage(mImageUrl, mImageView); |
| } |
| |
| // Pass clicks on the ImageView to the parent activity to handle |
| if (OnClickListener.class.isInstance(getActivity()) && Utils.hasHoneycomb()) { |
| mImageView.setOnClickListener((OnClickListener) getActivity()); |
| } |
| } |
| |
| @Override |
| public void onDestroy() { |
| super.onDestroy(); |
| if (mImageView != null) { |
| // Cancel any pending image work |
| ImageWorker.cancelWork(mImageView); |
| mImageView.setImageDrawable(null); |
| } |
| } |
| } |