Android版本，通过APP操作，可以查看对应项目的实现

Android/.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild

Android/README.md

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+## Android版本的项目框架
+
+### 说明
+* 运行模式
+
+> * ListView展示所有项目，点击选择进入对应的项目界面
+
+> * 只需按照下面的步骤操作，即可自动完成耦合 
+
+
+![](http://images2015.cnblogs.com/blog/951171/201609/951171-20160924003428121-1127574073.png)
+
+* 增加项目的方法
+* step 1:去values -> string -> Project,在Project中添加名称
+* step 2:新建一个独立的package，在该package里新建Activity用来展示功能，并设置隐式启动的action，同时在actionDocument类中添加对应的信息
+* step 3:在Activity中实现自己的项目功能
+
+### 实现了的功能展示
+* 逆转字符串
+
+![](http://images2015.cnblogs.com/blog/951171/201609/951171-20160924003440481-342957189.png)
+
+* 加密短信
+
+![](http://images2015.cnblogs.com/blog/951171/201609/951171-20160924003435496-1603527109.png)

Android/app/.gitignore

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+/build

Android/app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 24
+    buildToolsVersion "24.0.0"
+    defaultConfig {
+        applicationId "andrew.com.android_ver"
+        minSdkVersion 17
+        targetSdkVersion 24
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    compile 'com.android.support:appcompat-v7:24.2.1'
+    testCompile 'junit:junit:4.12'
+}

Android/app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in C:\Users\Andrew\AppData\Local\Android\sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

Android/app/src/androidTest/java/andrew/com/android_ver/ExampleInstrumentedTest.java

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+package andrew.com.android_ver;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static junit.framework.Assert.assertEquals;
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("andrew.com.android_ver", appContext.getPackageName());
+    }
+}

Android/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="andrew.com.android_ver">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:name=".application"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".ProjectListView">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".TurnDownString.MainActivity">
+            <intent-filter>
+                <action android:name="Action_TurnDownString" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".SecretMessage.SecretMessageView">
+            <intent-filter>
+                <action android:name="Action_SecretMessage"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

Android/app/src/main/java/andrew/com/android_ver/ListViewAdapter.java

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+package andrew.com.android_ver;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.Button;
+import android.widget.ListAdapter;
+
+import static andrew.com.android_ver.actionDocument.project_activity;
+
+/**
+ * Created by Andrew on 2016/9/22.
+ */
+
+public class ListViewAdapter extends BaseAdapter implements ListAdapter {
+
+    private Context context;
+    private Activity activity;
+    private int attr;
+    private String[] data;
+
+    public ListViewAdapter(Activity context, int attr, String[] data) {
+        this.context = context;
+        this.activity = context;
+        this.attr = attr;
+        this.data = data;
+    }
+
+    @Override
+    public int getCount() {
+        return data.length;
+    }
+
+    @Override
+    public Object getItem(int i) {
+        return null;
+    }
+
+    @Override
+    public long getItemId(int i) {
+        return i;
+    }
+
+    @Override
+    public View getView(int i, View view, ViewGroup viewGroup) {
+        final Button button;
+        if (view == null) {
+            LayoutInflater inflater = LayoutInflater.from(context);
+            view = inflater.inflate(attr, null);
+            button = (Button) view.findViewById(R.id.btn_Show);
+
+            view.setTag(new ViewHolder(button));
+        } else {
+            ViewHolder holder = (ViewHolder) view.getTag();
+            button = holder.getButton();
+        }
+
+        button.setText(data[i]);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                CharSequence activity = button.getText();
+                Intent i = new Intent();
+                String action = project_activity.get(activity);
+                i.setAction(action);
+                context.startActivity(i);
+            }
+        });
+        return view;
+    }
+
+    private class ViewHolder {
+        Button button;
+
+        public ViewHolder(Button button) {
+            this.button = button;
+        }
+
+        public Button getButton() {
+            return button;
+        }
+    }
+}