项目中要到图片、视频选择的功能，然后google了一下，找到Matisse，知乎的图片选择框架，用的人还挺多的，果断依赖gradle,然后开始我的踩坑之旅。
首先，框架本身的图片框架glide是v3版本的，然后我项目中的是目前最新的v4.7.1,然后需要重写它的图片加载.imageEngine(new GlideEngine())，因为低版本的一些api在高版本已经找不到了，这都是小问题。
public class GlideEngine implements ImageEngine{@Overridepublic void loadThumbnail(Context context, int resize, Drawable placeholder, ImageView imageView, Uri uri) {Glide.with(context).asBitmap() // some .jpeg files are actually gif.load(uri).apply(new RequestOptions().override(resize, resize).placeholder(placeholder).centerCrop()).into(imageView);}@Overridepublic void loadGifThumbnail(Context context, int resize, Drawable placeholder, ImageView imageView,Uri uri) {Glide.with(context).asBitmap() // some .jpeg files are actually gif.load(uri).apply(new RequestOptions().override(resize, resize).placeholder(placeholder).centerCrop()).into(imageView);}@Overridepublic void loadImage(Context context, int resizeX, int resizeY, ImageView imageView, Uri uri) {Glide.with(context).load(uri).apply(new RequestOptions().override(resizeX, resizeY).priority(Priority.HIGH).fitCenter()).into(imageView);}@Overridepublic void loadGifImage(Context context, int resizeX, int resizeY, ImageView imageView, Uri uri) {Glide.with(context).asGif().load(uri).apply(new RequestOptions().override(resizeX, resizeY).priority(Priority.HIGH).fitCenter()).into(imageView);}@Overridepublic boolean supportAnimatedGif() {return true;}
}然后运行成功，如愿以偿的打开了相册，当然这都建立了你已经申请并获得了6.0以上的运行期权限，Matisse图片加载器修改后，预览图片直接黑屏：
Glide: Root cause (1 of 5) java.lang.OutOfMemoryError: Failed to allocate a 19660812 byte allocation with 13530040 free bytes and 12MB until OOM
Glide: Root cause (4 of 5)
java.io.IOException: java.lang.RuntimeException: setDataSource failed: status = 0x80000000然后我下载了一份github上的代码，发现了Demo和GitHub上示例代码的问题。
Matisse.from(SampleActivity.this).choose(MimeType.ofAll(), false).countable(true).capture(true).captureStrategy(new CaptureStrategy(true, "com.zhihu.matisse.sample.fileprovider")).maxSelectable(9).addFilter(new GifSizeFilter(320, 320, 5 * Filter.K * Filter.K)).gridExpectedSize(getResources().getDimensionPixelSize(R.dimen.grid_expected_size)).restrictOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT).thumbnailScale(0.85f)
// .imageEngine(new GlideEngine()) // for glide-V3.imageEngine(new Glide4Engine()) // for glide-V4.setOnSelectedListener(new OnSelectedListener() {@Overridepublic void onSelected(@NonNull List<Uri> uriList, @NonNull List<String> pathList) {// DO SOMETHING IMMEDIATELY HERELog.e("onSelected", "onSelected: pathList=" + pathList);}}).originalEnable(true).maxOriginalSize(10).setOnCheckedListener(new OnCheckedListener() {@Overridepublic void onCheck(boolean isChecked) {// DO SOMETHING IMMEDIATELY HERELog.e("isChecked", "onCheck: isChecked=" + isChecked);}}).forResult(REQUEST_CODE_CHOOSE);在.addFilter(new GifSizeFilter())中GifSizeFilter这个类居然不是public的，在按照github上的示例代码时这行代码报错了，当时我以为是不太重要的代码，然后去掉了。
/** Copyright 2017 Zhihu Inc.** 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.zhihu.matisse.sample;import android.content.Context;
import android.graphics.Point;import com.zhihu.matisse.MimeType;
import com.zhihu.matisse.filter.Filter;
import com.zhihu.matisse.internal.entity.IncapableCause;
import com.zhihu.matisse.internal.entity.Item;
import com.zhihu.matisse.internal.utils.PhotoMetadataUtils;import java.util.HashSet;
import java.util.Set;class GifSizeFilter extends Filter {private int mMinWidth;private int mMinHeight;private int mMaxSize;GifSizeFilter(int minWidth, int minHeight, int maxSizeInBytes) {mMinWidth = minWidth;mMinHeight = minHeight;mMaxSize = maxSizeInBytes;}@Overridepublic Set<MimeType> constraintTypes() {return new HashSet<MimeType>() {
{add(MimeType.GIF);}};}@Overridepublic IncapableCause filter(Context context, Item item) {if (!needFiltering(context, item))return null;Point size = PhotoMetadataUtils.getBitmapBound(context.getContentResolver(), item.getContentUri());if (size.x < mMinWidth || size.y < mMinHeight || item.size > mMaxSize) {return new IncapableCause(IncapableCause.DIALOG, context.getString(R.string.error_gif, mMinWidth,String.valueOf(PhotoMetadataUtils.getSizeInMB(mMaxSize))));}return null;}}最后的解决办法是复制了GifSizeFilter 并把它申明为public，问题解决。