关于Pictureselector相册全白、不显示图片的问题（附GlideEngine代码） |
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关于Pictureselector相册全白、不显示图片的问题（附GlideEngine代码）
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关于Pictureselector相册全白、不显示图片的问题
文末附GlideEngine代码 前些日子要做一个用到相机相册剪裁照片的项目，用了网上比较火比较新的Pictureselector，发现相册能识别并且打开，但是整个相册预览都是空白的，点击预览也是一片黑 解决方法：在初始化的过程中缺少了一样设置，这项可能是因为已经被移除的原因，各大博主的分享中并没有看见这一行 PictureSelector.create(this).loadImageEngine(GlideEngine.createGlideEngine())这一行添加进初始化方法中，图像就能正常显示与预览 public void photoAndCamera(){ PictureSelector.create(this) .openGallery(PictureMimeType.ofImage()) .theme(R.style.picture_default_style) .loadImageEngine(GlideEngine.createGlideEngine()) .forResult(PictureConfig.CHOOSE_REQUEST); }
单纯分享解决方法，不讨论其安全性和方法被移除的原因，也请大佬指教更好更安全的方法 附：所需的GlideEngine代码（ImageEngine来自pictureselector轮子） 前置依赖 implementation 'com.github.LuckSiege.PictureSelector:picture_library:v2.5.9' implementation "com.github.bumptech.glide:glide:4.11.0" public class GlideEngine implements ImageEngine { /** * 加载图片 * * @param context * @param url * @param imageView */ @Override public void loadImage(@NonNull Context context, @NonNull String url, @NonNull ImageView imageView) { Glide.with(context) .load(url) .into(imageView); } /** * 加载网络图片适配长图方案 * # 注意：此方法只有加载网络图片才会回调 * * @param context * @param url * @param imageView * @param longImageView * @param callback 网络图片加载回调监听 {link after version 2.5.1 Please use the #OnImageCompleteCallback#} */ @Override public void loadImage(@NonNull Context context, @NonNull String url, @NonNull ImageView imageView, SubsamplingScaleImageView longImageView, OnImageCompleteCallback callback) { Glide.with(context) .asBitmap() .load(url) .into(new ImageViewTarget(imageView) { @Override public void onLoadStarted(@Nullable Drawable placeholder) { super.onLoadStarted(placeholder); if (callback != null) { callback.onShowLoading(); } } @Override public void onLoadFailed(@Nullable Drawable errorDrawable) { super.onLoadFailed(errorDrawable); if (callback != null) { callback.onHideLoading(); } } @Override protected void setResource(@Nullable Bitmap resource) { if (callback != null) { callback.onHideLoading(); } if (resource != null) { boolean eqLongImage = MediaUtils.isLongImg(resource.getWidth(), resource.getHeight()); longImageView.setVisibility(eqLongImage ? View.VISIBLE : View.GONE); imageView.setVisibility(eqLongImage ? View.GONE : View.VISIBLE); if (eqLongImage) { // 加载长图 longImageView.setQuickScaleEnabled(true); longImageView.setZoomEnabled(true); longImageView.setPanEnabled(true); longImageView.setDoubleTapZoomDuration(100); longImageView.setMinimumScaleType(SubsamplingScaleImageView.SCALE_TYPE_CENTER_CROP); longImageView.setDoubleTapZoomDpi(SubsamplingScaleImageView.ZOOM_FOCUS_CENTER); longImageView.setImage(ImageSource.bitmap(resource), new ImageViewState(0, new PointF(0, 0), 0)); } else { // 普通图片 imageView.setImageBitmap(resource); } } } }); } /** * 加载网络图片适配长图方案 * # 注意：此方法只有加载网络图片才会回调 * * @param context * @param url * @param imageView * @param longImageView * @ 已废弃 */ @Override public void loadImage(@NonNull Context context, @NonNull String url, @NonNull ImageView imageView, SubsamplingScaleImageView longImageView) { Glide.with(context) .asBitmap() .load(url) .into(new ImageViewTarget(imageView) { @Override protected void setResource(@Nullable Bitmap resource) { if (resource != null) { boolean eqLongImage = MediaUtils.isLongImg(resource.getWidth(), resource.getHeight()); longImageView.setVisibility(eqLongImage ? View.VISIBLE : View.GONE); imageView.setVisibility(eqLongImage ? View.GONE : View.VISIBLE); if (eqLongImage) { // 加载长图 longImageView.setQuickScaleEnabled(true); longImageView.setZoomEnabled(true); longImageView.setPanEnabled(true); longImageView.setDoubleTapZoomDuration(100); longImageView.setMinimumScaleType(SubsamplingScaleImageView.SCALE_TYPE_CENTER_CROP); longImageView.setDoubleTapZoomDpi(SubsamplingScaleImageView.ZOOM_FOCUS_CENTER); longImageView.setImage(ImageSource.bitmap(resource), new ImageViewState(0, new PointF(0, 0), 0)); } else { // 普通图片 imageView.setImageBitmap(resource); } } } }); } /** * 加载相册目录 * * @param context 上下文 * @param url 图片路径 * @param imageView 承载图片ImageView */ @Override public void loadFolderImage(@NonNull Context context, @NonNull String url, @NonNull ImageView imageView) { Glide.with(context) .asBitmap() .load(url) .override(180, 180) .centerCrop() .sizeMultiplier(0.5f) .apply(new RequestOptions().placeholder(R.drawable.picture_image_placeholder)) .into(new BitmapImageViewTarget(imageView) { @Override protected void setResource(Bitmap resource) { RoundedBitmapDrawable circularBitmapDrawable = RoundedBitmapDrawableFactory. create(context.getResources(), resource); circularBitmapDrawable.setCornerRadius(8); imageView.setImageDrawable(circularBitmapDrawable); } }); } /** * 加载gif * * @param context 上下文 * @param url 图片路径 * @param imageView 承载图片ImageView */ @Override public void loadAsGifImage(@NonNull Context context, @NonNull String url, @NonNull ImageView imageView) { Glide.with(context) .asGif() .load(url) .into(imageView); } /** * 加载图片列表图片 * * @param context 上下文 * @param url 图片路径 * @param imageView 承载图片ImageView */ @Override public void loadGridImage(@NonNull Context context, @NonNull String url, @NonNull ImageView imageView) { Glide.with(context) .load(url) .override(200, 200) .centerCrop() .apply(new RequestOptions().placeholder(R.drawable.picture_image_placeholder)) .into(imageView); } private GlideEngine() { } private static GlideEngine instance; public static GlideEngine createGlideEngine() { if (null == instance) { synchronized (GlideEngine.class) { if (null == instance) { instance = new GlideEngine(); } } } return instance; } } |
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