13120241790
commented
3 years ago notifyForDescendants When false, the observer will be notified
- whenever a change occurs to the exact URI specified by
urior to one of the URI's ancestors in the path- hierarchy. When true, the observer will also be notified
- whenever a change occurs to the URI's descendants in the path
- hierarchy.
这里的变化和原代码只是一个 Boolean 值的差异吗？
MhuiHugh
wanglijun93
if (Build.VERSION.SDK_INT < 29) { //Android 9及以下版本,否则不会回调onChange() // 注册内容观察者 mContext.getContentResolver().registerContentObserver( MediaStore.Images.Media.INTERNAL_CONTENT_URI, false, mInternalObserver ); mContext.getContentResolver().registerContentObserver( MediaStore.Images.Media.EXTERNAL_CONTENT_URI, false, mExternalObserver ); } else { //Android 10，11以上版本 // 注册内容观察者 mContext.getContentResolver().registerContentObserver( MediaStore.Images.Media.INTERNAL_CONTENT_URI, true, mInternalObserver ); mContext.getContentResolver().registerContentObserver( MediaStore.Images.Media.EXTERNAL_CONTENT_URI, true, mExternalObserver ); }