產生release apk

壓縮apk

zipalign -v 4 in.apk out.pak

update apk

Ref : https://gist.github.com/lifuzu/9958640


記得要新增 write external storage 的權限

ecpay app 串接

Ref :  https://github.com/ECpay/ECpayMobileSDK_Android

Ecpay Mobile SDK 訂單幕前、幕後產生 請配合使用 Ecpay 廠商手機金流介接技術文件

• web view 產生訂單(幕前)
• api 產生訂單(幕後)
• otp 簡訊驗證(幕後)

grabcut on android sample

Ref : https://github.com/schenkerx/GrabCutDemo

Hosting a Website on linode

Ref :  https://www.linode.com/docs/websites/hosting-a-website

fast http get and post

Ref : https://github.com/amitshekhariitbhu/Fast-Android-Networking

Implementing Bottom Navigation View in your app

Ref :  https://segunfamisa.com/posts/bottom-navigation-view-android


Ref :  https://github.com/segunfamisa/bottom-navigation-demo


Ref : https://medium.com/@hitherejoe/exploring-the-android-design-support-library-bottom-navigation-drawer-548de699e8e0#.n1fcoz8sr



How to set the color of Bottom Navigation View

<?xml version="1.0" encoding="utf-8"?>
	<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:app="http://schemas.android.com/apk/res-auto"
	android:layout_width="match_parent"
	android:layout_height="match_parent">
	<!-- Content Container -->
	<android.support.design.widget.BottomNavigationView
	android:id="@+id/bottom_navigation"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_alignParentBottom="true"
	app:itemBackground="@color/colorPrimary"
	app:itemIconTint="@color/white"
	app:itemTextColor="@color/white"
	app:menu="@menu/bottom_navigation_main" />
	</RelativeLayout>

Ref : http://wl9739.github.io/2016/10/20/BottomNavigationView-%E7%9A%84%E4%BD%BF%E7%94%A8/

svg to android xml website

Ref :  http://a-student.github.io/SvgToVectorDrawableConverter.Web/

dp 和 px 的轉換, sp 和 px的轉換

public static int dpToPx(int dp) { return (int) (dp * Resources.getSystem().getDisplayMetrics().density); }



public static int pxToDp(int px) { return (int) (px / Resources.getSystem().getDisplayMetrics().density); }




字體用

public static int spToPx(int sp) { return (int) (sp * Resources.getSystem().getDisplayMetrics().scaledDensity); }