react / 리액트로 화면에 카메라 구현하고 촬영한 사진 저장하기

참고 사이트

https://docs.expo.dev/versions/latest/sdk/camera/

Camera - Expo Documentation

 

 

시작

프로젝트 생성문

npx react-native init CameraSample --template react-native-template-typescript

 

설정을 위한 설치문

npm install -g yarn


npm yarn --version


npm i react-native-camera


npm i watcher


npm i @react-native-community/cameraroll


npm install --save fbjs

 

package.json > dependencis 부분에서 watcher 버전 1.1 으로 변경

 

 

 

그외 설정

app>src 안에 있는 build.gradle > defaultConfig부분에 아래 구문 삽입

missingDimensionStrategy 'react-native-camera', 'general'

 

build.gradle> defaultConfig 전체 코드

apply plugin: "com.android.application"

import com.android.build.OutputFile

/**
 * The react.gradle file registers a task for each build variant (e.g. bundleDebugJsAndAssets
 * and bundleReleaseJsAndAssets).
 * These basically call `react-native bundle` with the correct arguments during the Android build
 * cycle. By default, bundleDebugJsAndAssets is skipped, as in debug/dev mode we prefer to load the
 * bundle directly from the development server. Below you can see all the possible configurations
 * and their defaults. If you decide to add a configuration block, make sure to add it before the
 * `apply from: "../../node_modules/react-native/react.gradle"` line.
 *
 * project.ext.react = [
 *   // the name of the generated asset file containing your JS bundle
 *   bundleAssetName: "index.android.bundle",
 *
 *   // the entry file for bundle generation. If none specified and
 *   // "index.android.js" exists, it will be used. Otherwise "index.js" is
 *   // default. Can be overridden with ENTRY_FILE environment variable.
 *   entryFile: "index.android.js",
 *
 *   // https://reactnative.dev/docs/performance#enable-the-ram-format
 *   bundleCommand: "ram-bundle",
 *
 *   // whether to bundle JS and assets in debug mode
 *   bundleInDebug: false,
 *
 *   // whether to bundle JS and assets in release mode
 *   bundleInRelease: true,
 *
 *   // whether to bundle JS and assets in another build variant (if configured).
 *   // See http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Build-Variants
 *   // The configuration property can be in the following formats
 *   //         'bundleIn${productFlavor}${buildType}'
 *   //         'bundleIn${buildType}'
 *   // bundleInFreeDebug: true,
 *   // bundleInPaidRelease: true,
 *   // bundleInBeta: true,
 *
 *   // whether to disable dev mode in custom build variants (by default only disabled in release)
 *   // for example: to disable dev mode in the staging build type (if configured)
 *   devDisabledInStaging: true,
 *   // The configuration property can be in the following formats
 *   //         'devDisabledIn${productFlavor}${buildType}'
 *   //         'devDisabledIn${buildType}'
 *
 *   // the root of your project, i.e. where "package.json" lives
 *   root: "../../",
 *
 *   // where to put the JS bundle asset in debug mode
 *   jsBundleDirDebug: "$buildDir/intermediates/assets/debug",
 *
 *   // where to put the JS bundle asset in release mode
 *   jsBundleDirRelease: "$buildDir/intermediates/assets/release",
 *
 *   // where to put drawable resources / React Native assets, e.g. the ones you use via
 *   // require('./image.png')), in debug mode
 *   resourcesDirDebug: "$buildDir/intermediates/res/merged/debug",
 *
 *   // where to put drawable resources / React Native assets, e.g. the ones you use via
 *   // require('./image.png')), in release mode
 *   resourcesDirRelease: "$buildDir/intermediates/res/merged/release",
 *
 *   // by default the gradle tasks are skipped if none of the JS files or assets change; this means
 *   // that we don't look at files in android/ or ios/ to determine whether the tasks are up to
 *   // date; if you have any other folders that you want to ignore for performance reasons (gradle
 *   // indexes the entire tree), add them here. Alternatively, if you have JS files in android/
 *   // for example, you might want to remove it from here.
 *   inputExcludes: ["android/**", "ios/**"],
 *
 *   // override which node gets called and with what additional arguments
 *   nodeExecutableAndArgs: ["node"],
 *
 *   // supply additional arguments to the packager
 *   extraPackagerArgs: []
 * ]
 */

project.ext.react = [
    enableHermes: false,  // clean and rebuild if changing
]

apply from: "../../node_modules/react-native/react.gradle"

/**
 * Set this to true to create two separate APKs instead of one:
 *   - An APK that only works on ARM devices
 *   - An APK that only works on x86 devices
 * The advantage is the size of the APK is reduced by about 4MB.
 * Upload all the APKs to the Play Store and people will download
 * the correct one based on the CPU architecture of their device.
 */
def enableSeparateBuildPerCPUArchitecture = false

/**
 * Run Proguard to shrink the Java bytecode in release builds.
 */
def enableProguardInReleaseBuilds = false

/**
 * The preferred build flavor of JavaScriptCore.
 *
 * For example, to use the international variant, you can use:
 * `def jscFlavor = 'org.webkit:android-jsc-intl:+'`
 *
 * The international variant includes ICU i18n library and necessary data
 * allowing to use e.g. `Date.toLocaleString` and `String.localeCompare` that
 * give correct results when using with locales other than en-US.  Note that
 * this variant is about 6MiB larger per architecture than default.
 */
def jscFlavor = 'org.webkit:android-jsc:+'

/**
 * Whether to enable the Hermes VM.
 *
 * This should be set on project.ext.react and that value will be read here. If it is not set
 * on project.ext.react, JavaScript will not be compiled to Hermes Bytecode
 * and the benefits of using Hermes will therefore be sharply reduced.
 */
def enableHermes = project.ext.react.get("enableHermes", false);

/**
 * Architectures to build native code for in debug.
 */
def nativeArchitectures = project.getProperties().get("reactNativeDebugArchitectures")

android {
    ndkVersion rootProject.ext.ndkVersion

    compileSdkVersion rootProject.ext.compileSdkVersion

    defaultConfig {
        applicationId "com.camerasample"
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        versionCode 1
        versionName "1.0"
        missingDimensionStrategy 'react-native-camera', 'general'

    }
    splits {
        abi {
            reset()
            enable enableSeparateBuildPerCPUArchitecture
            universalApk false  // If true, also generate a universal APK
            include "armeabi-v7a", "x86", "arm64-v8a", "x86_64"
        }
    }
    signingConfigs {
        debug {
            storeFile file('debug.keystore')
            storePassword 'android'
            keyAlias 'androiddebugkey'
            keyPassword 'android'
        }
    }
    buildTypes {
        debug {
            signingConfig signingConfigs.debug
            if (nativeArchitectures) {
                ndk {
                    abiFilters nativeArchitectures.split(',')
                }
            }
        }
        release {
            // Caution! In production, you need to generate your own keystore file.
            // see https://reactnative.dev/docs/signed-apk-android.
            signingConfig signingConfigs.debug
            minifyEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
        }
    }

    // applicationVariants are e.g. debug, release
    applicationVariants.all { variant ->
        variant.outputs.each { output ->
            // For each separate APK per architecture, set a unique version code as described here:
            // https://developer.android.com/studio/build/configure-apk-splits.html
            // Example: versionCode 1 will generate 1001 for armeabi-v7a, 1002 for x86, etc.
            def versionCodes = ["armeabi-v7a": 1, "x86": 2, "arm64-v8a": 3, "x86_64": 4]
            def abi = output.getFilter(OutputFile.ABI)
            if (abi != null) {  // null for the universal-debug, universal-release variants
                output.versionCodeOverride =
                        defaultConfig.versionCode * 1000 + versionCodes.get(abi)
            }

        }
    }
}

dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    //noinspection GradleDynamicVersion
    implementation "com.facebook.react:react-native:+"  // From node_modules

    implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.0.0"

    debugImplementation("com.facebook.flipper:flipper:${FLIPPER_VERSION}") {
        exclude group:'com.facebook.fbjni'
    }

    debugImplementation("com.facebook.flipper:flipper-network-plugin:${FLIPPER_VERSION}") {
        exclude group:'com.facebook.flipper'
        exclude group:'com.squareup.okhttp3', module:'okhttp'
    }

    debugImplementation("com.facebook.flipper:flipper-fresco-plugin:${FLIPPER_VERSION}") {
        exclude group:'com.facebook.flipper'
    }

    if (enableHermes) {
        def hermesPath = "../../node_modules/hermes-engine/android/";
        debugImplementation files(hermesPath + "hermes-debug.aar")
        releaseImplementation files(hermesPath + "hermes-release.aar")
    } else {
        implementation jscFlavor
    }
}

// Run this once to be able to run the application with BUCK
// puts all compile dependencies into folder libs for BUCK to use
task copyDownloadableDepsToLibs(type: Copy) {
    from configurations.implementation
    into 'libs'
}

apply from: file("../../node_modules/@react-native-community/cli-platform-android/native_modules.gradle"); applyNativeModulesAppBuildGradle(project)

 

---

 

app>src>main> AndroidManifest.xml 부분을 아래와 같이 수정

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.camerasample">

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO"/>





    <application
      android:name=".MainApplication"
      android:label="@string/app_name"
      android:icon="@mipmap/ic_launcher"
      android:roundIcon="@mipmap/ic_launcher_round"
      android:allowBackup="false"
      android:theme="@style/AppTheme"
      android:requestLegacyExternalStorage="true">
      

      <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:configChanges="keyboard|keyboardHidden|orientation|screenSize|uiMode"
        android:launchMode="singleTask"
        android:windowSoftInputMode="adjustResize">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
      </activity>
    </application>
</manifest>

 

 

App.tsx

import CameraRoll from "@react-native-community/cameraroll";
import React, { useState } from "react";
import { Image, PermissionsAndroid, StyleSheet, Text, TouchableOpacity, View } from "react-native";
import { RNCamera } from "react-native-camera";

export default function App(){
  const cameraRef=React.useRef(null)
  const[picture,setPicture] = useState("이미지경로")


  //권한처리

  const takePhoto = async()=>{

    await PermissionsAndroid.requestMultiple([
      PermissionsAndroid.PERMISSIONS.CAMERA,
      PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE,
      PermissionsAndroid.PERMISSIONS.READ_EXTERNAL_STORAGE
    ]).then((result)=>{
      if (result['android.permission.CAMERA']
          && result['android.permission.WRITE_EXTERNAL_STORAGE']
          && result['android.permission.READ_EXTERNAL_STORAGE'] === 'granted') {
          console.log("모든 권한 획득");
        } else {
          console.log("권한거절");
        }
    })

    if(cameraRef){
      const data= await cameraRef.current.takePictureAsync({
        quality:1,
        exif:true
      })
      console.log('data',data.uri)


      //사진저장
      if(data){
       const result = CameraRoll.save(data.uri).then(out=>{
         console.log(out)
         setPicture(data.uri)
      }).catch(err=>{
        console.log(`${err.message}`)
      })
      console.log('result',result)
    }

  }
}

  return(
    <View style={styles.container}>
     <RNCamera
     ref={cameraRef}
     style={{width:400, height:500}}
     type={RNCamera.Constants.Type.back}
     captureAudio={false}/>

     <TouchableOpacity onPress={takePhoto}>
      <View style={styles.button}>
      <Text>사진</Text>
      </View>
     </TouchableOpacity>

     <Image 
      style={styles.tinyLogo}
      source={{
        uri:`${picture}`
      }}/>
    </View>
  )
}

const styles = StyleSheet.create({
  container:{
    flex:1,
    justifyContent:"center",
    alignItems:"center"
  },
    button:{
      width:100,
      height:100,
      borderRadius:50,
      borderWidth:5,
      borderColor:"blue",
      borderStyle:"solid",
      backgroundColor:"pink",
      marginTop:30,
      justifyContent:"center",
      alignItems:"center"
    },
    tinyLogo:{
      width:100,
      height:100,
      marginTop:30
    }


})

 

 

실행화면

 

구동 화면

촬영해서 저장된 사진