package com.luck.picture.lib.adapter;
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import android.content.Intent;
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import android.graphics.PointF;
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import android.net.Uri;
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import android.os.Bundle;
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import android.util.SparseArray;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ImageView;
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import androidx.viewpager.widget.PagerAdapter;
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import com.luck.picture.lib.R;
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import com.luck.picture.lib.config.PictureConfig;
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import com.luck.picture.lib.config.PictureMimeType;
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import com.luck.picture.lib.config.PictureSelectionConfig;
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import com.luck.picture.lib.entity.LocalMedia;
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import com.luck.picture.lib.photoview.PhotoView;
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import com.luck.picture.lib.tools.JumpUtils;
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import com.luck.picture.lib.tools.MediaUtils;
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import com.luck.picture.lib.tools.SdkVersionUtils;
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import com.luck.picture.lib.widget.longimage.ImageSource;
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import com.luck.picture.lib.widget.longimage.ImageViewState;
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import com.luck.picture.lib.widget.longimage.SubsamplingScaleImageView;
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import java.io.File;
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import java.util.List;
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/**
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* @author：luck
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* @data：2018/1/27 下午7:50
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* @描述:图片预览
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*/
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public class PictureSimpleFragmentAdapter extends PagerAdapter {
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private List<LocalMedia> images;
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private OnCallBackActivity onBackPressed;
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private PictureSelectionConfig config;
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/**
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* 最大缓存图片数量
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*/
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private static final int MAX_CACHE_SIZE = 20;
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/**
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* 缓存view
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*/
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private SparseArray<View> mCacheView;
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public void clear() {
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if (null != mCacheView) {
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mCacheView.clear();
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mCacheView = null;
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}
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}
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public interface OnCallBackActivity {
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/**
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* 关闭预览Activity
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*/
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void onActivityBackPressed();
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}
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public PictureSimpleFragmentAdapter(PictureSelectionConfig config, List<LocalMedia> images,
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OnCallBackActivity onBackPressed) {
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super();
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this.config = config;
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this.images = images;
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this.onBackPressed = onBackPressed;
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this.mCacheView = new SparseArray<>();
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}
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@Override
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public int getCount() {
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return images != null ? images.size() : 0;
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}
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@Override
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public void destroyItem(ViewGroup container, int position, Object object) {
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(container).removeView((View) object);
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if (mCacheView.size() > MAX_CACHE_SIZE) {
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mCacheView.remove(position);
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}
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}
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@Override
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public boolean isViewFromObject(View view, Object object) {
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return view == object;
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}
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@Override
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public Object instantiateItem(ViewGroup container, int position) {
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View contentView = mCacheView.get(position);
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if (contentView == null) {
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contentView = LayoutInflater.from(container.getContext())
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.inflate(R.layout.picture_image_preview, container, false);
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// 常规图控件
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final PhotoView imageView = contentView.findViewById(R.id.preview_image);
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// 长图控件
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final SubsamplingScaleImageView longImg = contentView.findViewById(R.id.longImg);
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// 视频播放按钮
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ImageView ivPlay = contentView.findViewById(R.id.iv_play);
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LocalMedia media = images.get(position);
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if (media != null) {
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final String mimeType = media.getMimeType();
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boolean eqVideo = PictureMimeType.eqVideo(mimeType);
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ivPlay.setVisibility(eqVideo ? View.VISIBLE : View.GONE);
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final String path;
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if (media.isCut() && !media.isCompressed()) {
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// 裁剪过
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path = media.getCutPath();
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} else if (media.isCompressed() || (media.isCut() && media.isCompressed())) {
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// 压缩过,或者裁剪同时压缩过,以最终压缩过图片为准
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path = media.getCompressPath();
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} else {
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path = media.getPath();
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}
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boolean isGif = PictureMimeType.isGif(mimeType);
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final boolean eqLongImg = MediaUtils.isLongImg(media);
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imageView.setVisibility(eqLongImg && !isGif ? View.GONE : View.VISIBLE);
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longImg.setVisibility(eqLongImg && !isGif ? View.VISIBLE : View.GONE);
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// 压缩过的gif就不是gif了
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if (isGif && !media.isCompressed()) {
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if (config != null && config.imageEngine != null) {
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config.imageEngine.loadAsGifImage
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(contentView.getContext(), path, imageView);
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}
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} else {
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if (config != null && config.imageEngine != null) {
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if (eqLongImg) {
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displayLongPic(SdkVersionUtils.checkedAndroid_Q()
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? Uri.parse(path) : Uri.fromFile(new File(path)), longImg);
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} else {
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config.imageEngine.loadImage
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(contentView.getContext(), path, imageView);
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}
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}
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}
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imageView.setOnViewTapListener((view, x, y) -> {
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if (onBackPressed != null) {
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onBackPressed.onActivityBackPressed();
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}
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});
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longImg.setOnClickListener(v -> {
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if (onBackPressed != null) {
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onBackPressed.onActivityBackPressed();
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}
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});
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ivPlay.setOnClickListener(v -> {
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Intent intent = new Intent();
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Bundle bundle = new Bundle();
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bundle.putBoolean(PictureConfig.EXTRA_PREVIEW_VIDEO, true);
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bundle.putString(PictureConfig.EXTRA_VIDEO_PATH, path);
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intent.putExtras(bundle);
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JumpUtils.startPictureVideoPlayActivity(container.getContext(), bundle, PictureConfig.PREVIEW_VIDEO_CODE);
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});
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}
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mCacheView.put(position, contentView);
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}
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(container).addView(contentView, 0);
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return contentView;
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}
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/**
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* 加载长图
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*
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* @param uri
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* @param longImg
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*/
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private void displayLongPic(Uri uri, SubsamplingScaleImageView longImg) {
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longImg.setQuickScaleEnabled(true);
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longImg.setZoomEnabled(true);
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longImg.setPanEnabled(true);
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longImg.setDoubleTapZoomDuration(100);
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longImg.setMinimumScaleType(SubsamplingScaleImageView.SCALE_TYPE_CENTER_CROP);
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longImg.setDoubleTapZoomDpi(SubsamplingScaleImageView.ZOOM_FOCUS_CENTER);
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longImg.setImage(ImageSource.uri(uri), new ImageViewState(0, new PointF(0, 0), 0));
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}
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}
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