add Accelerate.framework

add “-lc++” to Other Linker Flags in your Build Settings.

Example:

Added a new sheet and put the push down list on it

First, select the whole row

Data>Data validation

Change the Cell Range to C2:C
which means the formula will excluded the row 1(header)

Click on Criteria box

Choose the list sheet

Highlight the whole row which you want to able to select in the pull down menu, and changed to TaskConstantList!B2:B to skip the header

convert sha-1 hash (from google) to base64 hash for facebook

install xxd in centos
yum install vim-common

echo 33:4E:48:84:19:50:3A:1F:63:A6:0F:F6:A1:C2:31:E5:01:38:55:2E | xxd -r -p | openssl base64

Output:
M05IhBlQOh9jpg/2ocIx5QE4VS4=

copy this to facebook console

cd to the project folder
cd /Users/xxx/GitBook/Library/Import/project

checking
gitbook serve .

PDF
gitbook pdf .

gen html
gitbook build . –output=./html

1)clean project rebuild

2)restart android studio

3)File->Invalidate cache and restart

4)open android terminal
first time use Gradle have to change the permission
chmod +x gradlew
./gradlew compileDebugSource –stacktrace -info
then see the error for details

-close Xcode
-go to project folder
-find the xxx.xcodeproj, right click show package

find project.pbxproj and open with txt editor
and search developmentRegions and change it form en to zh-HK

reopen project and you will see Localization section, development language change to HK

Please add this to AndroidManifest.xml:
<uses-library
    android:name="org.apache.http.legacy"
    android:required="false" />

看看androidManifest.xml 
有沒有加入android:exported="true"

<provider
    android:name="com.facebook.FacebookContentProvider"
    android:exported="true"<=======
android:authorities="com.facebook.app.FacebookContentProvider{APPID}" />

-logcat setting change it to floating mode and disable the floating mode, and double click the logcat bar to resize the logcat, it i will appear again

-if still cannot fix restart android studio and retry