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移动应用API设计理念10条

原文地址：http://u.10-tips-designing-your-mobile

在移动开发中，客户端通常需要一个基于Web云的API服务(Service)来实现C/S通信。最简化这些API的用例通常是获取(Read/Retrieve)云端数据，但并非局限于此，向云端发送数据、用户认证与管理等都可以基于该Web云服务实现。

你若想在你的移动端应用程序中，使用Web云API服务的话，下面10个坑是你应该知道的：

1.为你的每个API加入版本号

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TRANSACTION（事务隔离级别）
1. ISOLATION_DEFAULT：这是一个PlatfromTransactionManager默认的隔离级别，使用数据库默认的事务隔离级别。
每种数据库的默认隔离级别是不同的，例如SQL Server、Oracle默认Read Commited，MySQL默认Repeatable Read。
另外四个与JDBC的隔离级别相对应，不同的隔离级别采用不同的锁类型来实现，在四种隔离级别中，Serializable的
隔离级别最高，Read Uncommited的隔离级别最低。

2. ISOLATION_READ_UNCOMMITTED：读未提交数据，这是事务最低的隔离级别，在并发的事务中，它充许一个事务可以
读到另一个事务未提交的更新数据。（会出现脏读，不可重复读和幻读）

3. ISOLATION_READ_COMMITTED：读已提交数据，保证在并发的事务中，一个事务修改的数据提交后才能被另外一个事

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Unless specified otherwise, all of the below tinting applies to both Lollipop and pre-Lollipop using AppCompat v21. To use the support version of these attributes, remove the android namespace.  For instance, "android:colorControlNormal" becomes "colorControlNormal".  These attributes will be propagated to their corresponding attributes within the android namespace for devices running Lollipop.  Any exceptions to this will be noted by including the "android:" prefix.

All Clickable Views:
-----------
* ripple effect (Lollipop only) -- "colorControlHighlight"

Status Bar:
------------
* background (Lollipop only) - "colorPrimaryDark"

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import android.os.Bundle;
import android.support.design.widget.AppBarLayout;
import android.support.design.widget.TabLayout;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;

import com.blackcj.designsupportexample.adapters.RecyclerViewAdapter;

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<?xml version="1.0" encoding="utf-8"?><!--
  ~ Copyright (C) 2015 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software

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Android REST Controller with Cache-Control

Android REST Controller with Simple Cache Control Headers using Retrofit 1.9.0 + OkHttp 2.2.0

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import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.NinePatchDrawable;
import android.util.AttributeSet;
import android.widget.RelativeLayout;

public class FRelativeLayout extends RelativeLayout {

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import android.content.Context;
import android.content.SharedPreferences;
import android.text.TextUtils;
import android.util.Log;

import java.io.*;
import java.net.CookieStore;
import java.net.HttpCookie;
import java.net.URI;
import java.net.URISyntaxException;

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    byte[] photoByteArray = Files.toByteArray(photo.getImageFile());
    BlipoApi blipoApi = setUpNetwork();
    blipoApi.uploadPhoto(photoByteArray);

    private BlipoApi setUpNetwork() {
        RequestInterceptor requestInterceptor = new RequestInterceptor() {
            @Override
            public void intercept(RequestFacade requestFacade) {
                String imageId = UUID.randomUUID().toString();

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package com.f2prateek.five00px.data.api.auth;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import oauth.signpost.http.HttpRequest;
import retrofit.client.Header;
import retrofit.client.Request;