android 自動版本更新

http://blog.csdn.net/xjanker2/article/details/6303937

有非常重要的重點：

*****請先下載Config.java和NetworkTool.java兩個程式，放到對應的java目錄下。
https://code.google.com/p/androidex/source/browse/trunk/jtapp-12-updateapksamples/#jtapp-12-updateapksamples%2Fsrc%2Fjtapp%2Fupdateapksamples

*****UpdateActivity.java 是主程式，把對應的程式碼改到你的程式，其中要注意的是，程式碼中的UpdateActivity請記得要換成你自己的名稱....我也是被搞了一下~~哈

*****為什麼在模擬器中，更新會不能安裝，找到的文章解釋
http://stackoverflow.com/questions/19959890/android-app-not-install-an-existing-package-by-the-same-name-with-a-conflicting

the APK installed in the Emulator is signed with your debug-key(usually installed in ~/.android/debug.keystore)
因為key不同，但實際上，如果建置完畢的話，更新是不會有這問題。目前確實成功。
===========================
發生錯誤：
NetworkTool.java 中
HttpResponse response = client.execute(new HttpGet(url));
會發生
ERROR : android.os.NetworkOnMainThreadException

解決方式：
方法一：/*設定可以讓Thread運行在Android主要Thread*/
http://stackoverflow.com/questions/16439587/android-os-networkonmainthreadexception-with-android-4-2

在 HttpResponse response = client.execute(new HttpGet(url)); 之前放上
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
並
import android.os.StrictMode;

方法二：
etwork problem的問題我試了，是HTTPClient的部份不能在UI Thread做，寫一個extend AsyncTask的class讓HTTPClient的部份在background做就可以了

http://givemepass.blogspot.com/2011/12/http-server.html

===========================




第二個問題：寫檔在sd上
1. 在AVD建的時候要加上SD卡的容量
2. 在 AndroidManifest.xml 補上

android studio

http://save-coco.blogspot.com/2014/07/maven-eclipseandroid-app.html


Maven 據說很難用...功能強大，很難用
http://blog.csdn.net/wangwei_cq/article/details/17070307


Gradle 現在用這個
http://www.codedata.com.tw/java/understanding-gradle-3-getting-started/
http://ithelp.ithome.com.tw/question/10129873

---------------
http://jdev.tw/blog/3513/learning-android-studio


=====================
setup 1: onclick
http://www.youtube.com/watch?v=RCyuqMVGl4g

TextView mytv = (TextView)findViewById(R.id.textView);
mytv.setText("change textView!");

=====================
setup 2: export apk
builder-> apk

ruby sinatra admin login rack--two way

1.

http://www.sinatrarb.com/faq.html

require 'sinatra'

helpers do
  def protected!
    return if authorized?
    headers['WWW-Authenticate'] = 'Basic realm="Restricted Area"'
    halt 401, "Not authorized\n"
  end

  def authorized?
    @auth ||=  Rack::Auth::Basic::Request.new(request.env)
    @auth.provided? and @auth.basic? and @auth.credentials and @auth.credentials == ['admin', 'admin']
  end
end

get '/' do
  "Everybody can see this page"
end

get '/protected' do
  protected!
  "Welcome, authenticated client"
end

2.

http://www.highdots.com/forums/ruby-rails-talk/logging-out-rake-auth-basic-284054.html

LOGIN FORM (GET LOGIN METHOD)

<form method="post" action="/login">
<p><label>Username</label><input name="post[username]" /></p>
<p><label>Password</label><input name="post[password]" 
type="password"/></p>
<p><button type="submit">Login</button></p>
</form>


POST LOGIN METHOD

post '/login' do

if authenticate(params["post"]["username"], Digest::MD5.hexdigest(params["post"]["password"]))
    session[:user] = params["post"]["username"]
    flash[:notice] = "Login succeeded!"
    redirect '/admin'
else
    flash[:error] = "Login failed!"
    redirect '/login'
end

end


HELPER METHODS

# Authentication is hard-coded as there will only 1-3 users
def authenticate(username, password)

    if username == 'admin' and password == '[admin_password_in_MD5]'
        return true
    else
        return false
    end

end

# Protect pages
def login_required
    if session[:user]
        return true
    else
        redirect '/login'
        return false
    end
end

# Get the username of the logged in user
def current_user
    if session[:user]
        session[:user]
    end
end

# Verify if a user is logged in
def logged_in?
    !!session[:user]
end

jQuery Mobile and AngularJS Working Together

1. http://simonguest.com/2013/04/08/jquery-mobile-and-angularjs-working-together/

2. http://0not.net/index.php/using-angularjs-and-jquery-mobile/

• At the bottom of body, load AngularJS and then jQM
• Use jQM for routing (which is the default, as long as you don’t include ngRoute)