노방이야기

before

 after

 <TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Hello World!"
    android:padding="16dp"
    android:textSize="20sp" />

 <TextView
    android:id="@+id/tv_toy_names"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:padding="16dp"
    android:textSize="20sp" />

package com.example.nobang.favoritetoys;

public final class ToyBox {

    public static String[] getToyNames() {
        return new String[] {
                "Red Toy Wagon",
                "Chemistry Set",
               
                "Squirt Guns",
                "Miniature Replica Animals Stuffed with Beads that you swore to your parents would be worth lots of money one day",
                "Creepy Gremlin Doll",
                "Neodymium-Magnet Toy"
        };
    }
} 

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.nobang.favoritetoys/com.example.nobang.favoritetoys.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.append(java.lang.CharSequence)' on a null object reference
 

Your project path contains non-ASCII characters. This will most likely cause the build to fail on Windows. Please move your project to a different directory. See http://b.android.com/95744 for details. This warning can be disabled by adding the line 'android.overridePathCheck=true' to gradle.properties file in the project directory.
Open File
 

exercise code

solution code 

<?xml version="1.0" encoding="utf-8"?>
<!--
     Copyright (C) 2016 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
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
-->
<!--TODO (1) Change the ConstraintLayout to a FrameLayout.
    Note that you don't need to use the fully qualified name for FrameLayout. Replace
    "android.support.constraint.ConstraintLayout" with "FrameLayout"-->
<!--TODO (6) Remove the line that declares the id, we don't need it-->
<android.support.constraint.ConstraintLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!--TODO (2) Remove all attributes with the word constraint in them-->
    <!--TODO (3) Remove the default text-->
    <!--TODO (4) Give the TextView 16dp of padding-->
    <!--TODO (5) Set the text size to 20sp-->
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="@+id/activity_main"
        app:layout_constraintLeft_toLeftOf="@+id/activity_main"
        app:layout_constraintRight_toRightOf="@+id/activity_main"
        app:layout_constraintTop_toTopOf="@+id/activity_main" />

</android.support.constraint.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>
<!--
     Copyright (C) 2016 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
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
-->
<!--COMPLETED (1) Change the ConstraintLayout to a FrameLayout-->
<!--COMPLETED (6) Remove the line that declares the id, we don't need it-->
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!--COMPLETED (2) Remove all attributes with the word constraint in them-->
    <!--COMPLETED (3) Remove the default text-->
    <!--COMPLETED (4) Give the TextView 16dp of padding-->
    <!--COMPLETED (5) Set the text size to 20sp-->
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="16dp"
        android:textSize="20sp" />
</FrameLayout>

exercise

 solution

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion '25.0.2'

    defaultConfig {
        applicationId "com.android.example.favoritetoys"
        minSdkVersion 10
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:25.1.0'

    // TODO (7) Remove the ConstraintLayout dependency 
    // as we aren't using it for these simple projects
    compile 'com.android.support.constraint:constraint-layout:1.0.0-beta4'
}

apply plugin: 'com.android.application'

android {
    compileSdkVersion 25
    buildToolsVersion '25.0.2'

    defaultConfig {
        applicationId "com.android.example.favoritetoys"
        minSdkVersion 10
        targetSdkVersion 25
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:25.1.0'
}

http://code.google.com/p/openssl-for-windows/downloads/list 접속
자신에 윈도우 비트에 맞는 최신버전 zip 파일 다운로드 (예: openssl-0.9.8k_X64.zip )
압축해제

openssl-0.9.8k_X64 폴더를 C:\로 이동

path설정: 내컴퓨터 오른쪽 버튼 > 속성 > 고급 시스템 설정 > 환경변수

 - JAVA_HOME

 - OPENSSL_HOME

커맨드창 open : 윈도우키 +R -> cmd 엔터

release_key_alias : myTestApp

release_keystore_path : C:\Users\내컴퓨터\.android\debug.keystore

keytool -exportcert -alias <release_key_alias> -keystore <release_keystore_path> | openssl sha1 -binary | openssl base64

keytool -exportcert -alias myTestApp -keystore C:\Users\내컴퓨터\.android\debug.keystore | openssl sha1 -binary | openssl base64

위 명령을 실행시키면

키저장소 비밀번호를 입력하라고 나오고

입력하면 해쉬키가 생성된다.

이것을 kakao developer의 해당 어플내 플랫폼을 클릭하면

키해쉬에 붙여넣고 저장.

위에서 생성한 것은 개발용이므로 배포할 때에는 release용으로 생성하여 추가하면 된다.

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="kakao_app_key">카카오 api에서 생성한 app_key</string>
</resources>

KAKAO_SDK_GROUP=com.kakao.sdk
KAKAO_SDK_VERSION=1.15.1

subprojects {
    repositories {
        mavenCentral()
        maven { url 'http://devrepo.kakao.com:8088/nexus/content/groups/public/' }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
    implementation 'android.arch.navigation:navigation-fragment:1.0.0-alpha08'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.1.0-alpha4'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha4'

    // 카카오 로그인 sdk를 사용하기 위해 필요.
    compile group: 'com.kakao.sdk', name: 'usermgmt', version: KAKAO_SDK_VERSION
    //compile group: 'com.kakao.sdk', name: 'usermgmt', version: 1.15.1

    // 카카오내비 sdk를 사용하기 위해 필요.
    compile group: 'com.kakao.sdk', name: 'kakaonavi', version: KAKAO_SDK_VERSION
    //compile group: 'com.kakao.sdk', name: 'kakaonavi', version: 1.15.1

}

    <servlet>
        <servlet-name>blog</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/config/blog/springmvc/blog*.xml</param-value>
        </init-param>
        /
    </servlet>
    <servlet-mapping>
        <servlet-name>blog</servlet-name>
        <url-pattern>*.blog</url-pattern>
    </servlet-mapping>  

    <context:component-scan base-package="사용할package명.blog">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Repository"/>
    </context:component-scan> 

@Controller
public class BlogController {


    private ApplicationContext applicationContext;

    private static final Logger LOGGER = LoggerFactory.getLogger(BlogController.class);

    private Map<Integer, IncludedCompInfoVO> map;

    public void afterPropertiesSet() throws Exception {}

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
       
        LOGGER.info("BlogController setApplicationContext method has called!");
    }

    @RequestMapping("/index.blog")
    public String index(ModelMap model) {
        return "blog/BlogMain";
    }
 

    @RequestMapping(value = "/cmm/main/mainPage.do")
    public String getMgtMainPage(HttpServletRequest request, ModelMap model)
      throws Exception{

        // 공지사항 메인 컨텐츠 조회 시작 ---------------------------------
        //model.addAttribute("notiList", map.get("resultList"));
        // 공지사항 메인컨텐츠 조회 끝 -----------------------------------

        // 자유게시판 메인 컨텐츠 조회 시작 ---------------------------------
        model.addAttribute("bbsList", bbsMngService.selectBoardArticles(boardVO, "BBSA02").get("resultList"));
        // 자유게시판 메인컨텐츠 조회 끝 -----------------------------------

        // FAQ 메인 컨텐츠 조회 시작 ---------------------------------
        //model.addAttribute("faqList", faqManageService.selectFaqList(searchVO));
        // FAQ 메인 컨텐츠 조회 끝 -----------------------------------

        // 설문참여 메인 컨텐츠 조회 시작 -----------------------------------
        //model.addAttribute("qriList", egovQustnrRespondInfoService.selectQustnrRespondInfoManageList(qVO));
     // 설문참여 메인 컨텐츠 조회 끝 -----------------------------------


        return "main/EgovMainView";
    }

    <!-- 화면처리용 JSP 파일명의  prefix, suffix 처리에 대한 mvc 설정  -->
    <bean class="org.springframework.web.servlet.view.UrlBasedViewResolver" p:order="1"
    p:viewClass="org.springframework.web.servlet.view.JstlView"
    p:prefix="/WEB-INF/jsp/" p:suffix=".jsp"/> 

http://localhost:8080/egov_portal/cmm/main/mainPage.do

    <!-- 패키지 내 Controller, Service, Repository 클래스의 auto detect를 위한 mvc 설정 -->
    <context:component-scan base-package="egovframework">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Repository"/>
    </context:component-scan>

    /**
     * 메인 페이지 조회
     * @return 메인페이지 정보 Map [key : 항목명]
     *
     * @param request
     * @param model
     * @exception Exception Exception
     */
    @RequestMapping(value = "/mainPage.do")
    public String getMgtMainPage(HttpServletRequest request, ModelMap model)
      throws Exception{

        // 공지사항 메인 컨텐츠 조회 시작 ---------------------------------
        model.addAttribute("notiList", map.get("resultList"));


        // 공지사항 메인컨텐츠 조회 끝 -----------------------------------

        // 자유게시판 메인 컨텐츠 조회 시작 ---------------------------------
        model.addAttribute("bbsList", bbsMngService.selectBoardArticles(boardVO, "BBSA02").get("resultList"));
        // 자유게시판 메인컨텐츠 조회 끝 -----------------------------------

        // FAQ 메인 컨텐츠 조회 시작 ---------------------------------
        model.addAttribute("faqList", faqManageService.selectFaqList(searchVO));
        // FAQ 메인 컨텐츠 조회 끝 -----------------------------------

        // 설문참여 메인 컨텐츠 조회 시작 -----------------------------------
        model.addAttribute("qriList", egovQustnrRespondInfoService.selectQustnrRespondInfoManageList(qVO));
     // 설문참여 메인 컨텐츠 조회 끝 -----------------------------------


        return "main/RobMainView";
    }
 

/egov_portal/src/main/webapp/WEB-INF/jsp/main/RobMainView.jsp 

cvc-complex-type.2.3: Element 'web-app' cannot have character [children], because the type's content type is element-only.    web_allinone.xml    /allinone/src/main/webapp/WEB-INF    line 5    XML Problem

<web-app id="WebApp_ID" version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> 

<web-app id="WebApp_ID" version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee">