For basic sharing, please check the following link
https://github.com/codepath/android_guides/wiki/Sharing-Content-with-Intents
For sharing video to Line, Uri must be content://
like content://media/external/video/media/3338
For normal sharing, Uri could be file://
like file:///storage/emulated/0/Movies/ABC/abc.mp4
For how to convert file path to content uri, or to file uri, please check the following link
link
The following steps would meet error
- install app that is share target (but not run this app before)
- launch another app to do share to this app (share path is
file://) - It could show toast error "can't attach empty files"
The reason is in Android 6, system is runtime permission checking. Your uri is file://, so the target app should have an permission of READ_EXTERNAL_STORAGE, but your taget app do not grant it this permission, so it would popup error
Please check the following link for more details
Android 6: cannot share files anymore?
Runtime Permissions, Files, and ACTION_SEND
ASUS Zenphone 2
dalvik.vm.heapgrowthlimit=200m
dalvik.vm.heapsize=348m
Xiaomi Mi 4i
dalvik.vm.heapgrowthlimit=128m
dalvik.vm.heapsize=256m
Nexus 5
dalvik.vm.heapgrowthlimit=192m
dalvik.vm.heapsize=512m
heapgrowthlimit是一般情況下的heap size
heapsize是使用largeHeap後，可以用的最大heap size
結論是小米手機heap真的很小
語法：
git submodule add <repository> [<path>]
git submodule add https://github.com/facebook/xxxxx.git to/your/path
接著輸入git status
可以看到有兩個要新增的檔案
# new file: .gitmodules
# new file: your_submodules_repository
這兩個檔案都要commit以及push到remote repository.
your_submodules_repository只是個連結而已，並不是整個資料夾裡的檔案都上去
接著如果你的同事clone下來這個專案之後，只要輸入
git submodule init // 會加submodule的資訊到專案目錄的.git/config
git submodule update
就會clone下來整個submodule
原則上應該會是自動就會cached到keychain。如果真的發生一直要求輸入帳密的情形，輸入
git config credential.helper store
可以cached到local
git config --global credential.helper store
可以cached到global