fix bug

matisse/src/main/java/com/zhihu/matisse/internal/model/AlbumMediaCollection.java

@@ -21,6 +21,7 @@
 import android.os.Bundle;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentActivity;
 import androidx.loader.app.LoaderManager;
 import androidx.loader.content.Loader;
@@ -74,9 +75,15 @@ public void onLoaderReset(Loader<Cursor> loader) {
         mCallbacks.onAlbumMediaReset();
     }
 
-    public void onCreate(@NonNull FragmentActivity context, @NonNull AlbumMediaCallbacks callbacks) {
-        mContext = new WeakReference<Context>(context);
-        mLoaderManager = context.getSupportLoaderManager();
+    public void onCreate(@NonNull FragmentActivity activity, @NonNull AlbumMediaCallbacks callbacks) {
+        mContext = new WeakReference<>(activity);
+        mLoaderManager = LoaderManager.getInstance(activity);
+        mCallbacks = callbacks;
+    }
+
+    public void onCreate(@NonNull Fragment fragment, @NonNull AlbumMediaCallbacks callbacks) {
+        mContext = new WeakReference<>(fragment.getContext());
+        mLoaderManager = LoaderManager.getInstance(fragment);
         mCallbacks = callbacks;
     }
 

matisse/src/main/java/com/zhihu/matisse/internal/ui/MediaSelectionFragment.java

@@ -109,7 +109,7 @@ public void onActivityCreated(@Nullable Bundle savedInstanceState) {
         int spacing = getResources().getDimensionPixelSize(R.dimen.media_grid_spacing);
         mRecyclerView.addItemDecoration(new MediaGridInset(spanCount, spacing, false));
         mRecyclerView.setAdapter(mAdapter);
-        mAlbumMediaCollection.onCreate(getActivity(), this);
+        mAlbumMediaCollection.onCreate(this, this);
         mAlbumMediaCollection.load(album, selectionSpec.capture);
     }
 

sample/build.gradle

@@ -47,4 +47,5 @@ dependencies {
     implementation 'io.reactivex.rxjava2:rxjava:2.2.12'
     implementation 'com.github.bumptech.glide:glide:4.9.0'
     implementation 'com.squareup.picasso:picasso:2.5.2'
+    implementation group: 'androidx.fragment', name: 'fragment', version: '1.3.3'
 }