[안드로이드] 카메라 권한 허용하기

이현경·2020년 9월 18일

목록 보기

5/6

안드로이드 스튜디오로 카메라 촬영이 가능하도록 구현해보겠습니다.
프로젝트 용에 맞춰 개발한 것이기 때문에 layout 코드는 따로 올리지 않겠습니다 :)

# ShootActivity.java

package com.example.test;

import android.Manifest;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.content.FileProvider;

import com.gun0912.tedpermission.PermissionListener;
import com.gun0912.tedpermission.TedPermission;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;

public class ShootActivity extends AppCompatActivity {

    private static final int REQUEST_IMAGE_CAPTURE = 672;
    private String imageFilePath;
    private Uri photoUrl;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_shoot);

        //권한 체크
        TedPermission.with(getApplicationContext())
                .setPermissionListener(permissionListener)
                .setRationaleMessage("카메라 권한이 필요합니다.")
                .setDeniedMessage("카메라 권한을 거부하셨습니다.")
                .setPermissions(Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.CAMERA)
                .check();

       findViewById(R.id.start).setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View v) {
               Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
               if (intent.resolveActivity(getPackageManager()) != null) {
                   File photoFile = null;
                   try {
                       photoFile = createImageFile();
                   } catch (IOException e) {

                   }

                   if (photoFile != null) {
                       photoUrl = FileProvider.getUriForFile(getApplicationContext(), getPackageName(), photoFile);
                       intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUrl);
                       startActivityForResult(intent, REQUEST_IMAGE_CAPTURE);
                   }
               }
           }
       });
    }

    private File createImageFile() throws IOException {
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        String imageFileName = "TEST_" + timeStamp + "_";
        File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
        File image = File.createTempFile(
                imageFileName,
                ".jpg",
                storageDir
        );
        imageFilePath = image.getAbsolutePath();
        return image;
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
            Bitmap bitmap = BitmapFactory.decodeFile(imageFilePath);
            ExifInterface exif = null;

            try {
                exif = new ExifInterface(imageFilePath);
            } catch (IOException e) {
                e.printStackTrace();
            }

            int exifOrientation;
            int exifDegree;

            if (exif != null) {
                exifOrientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
                exifDegree = exifOrientationToDegress(exifOrientation);
            } else {
                exifDegree = 0;
            }

            ((ImageView) findViewById(R.id.iv_result)).setImageBitmap(rotate(bitmap, exifDegree));
        }

    }

    private int exifOrientationToDegress(int exifOrientation) {
        if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_90) {
            return 90;
        } else if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_180) {
            return 180;
        } else if (exifOrientation == ExifInterface.ORIENTATION_ROTATE_270) {
            return 270;
        }
        return 0;
    }

    private Bitmap rotate(Bitmap bitmap, float degree) {
        Matrix matrix = new Matrix();
        matrix.postRotate(degree);
        return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
    }

    PermissionListener permissionListener = new PermissionListener() {
        @Override
        public void onPermissionGranted() {
            Toast.makeText(getApplicationContext(), "권한이 허용됨", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onPermissionDenied(ArrayList<String> deniedPermissions) {
            Toast.makeText(getApplicationContext(), "권한이 거부됨", Toast.LENGTH_SHORT).show();
        }
    };

}

이번에도 AndroidManifest.xml 과 Module:app 을 수정해주어야 합니다.

# AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.test">
    <uses-permission android:name="android.permission.INTERNET"/>
    
    // 추가해야 하는 부분
    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".LoginActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
      
	// 추가해야 하는 부분	
        <provider
            android:authorities="com.example.자신의 프로젝트 명"
            android:name="androidx.core.content.FileProvider"
            android:exported="false"
            android:grantUriPermissions="true">

            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths" />
        </provider>

</application>
</manifest>

# Module.app

apply plugin: 'com.android.application'

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.3"

    defaultConfig {
        applicationId "com.example.test"
        minSdkVersion 16
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }

}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])

    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
    implementation 'gun0912.ted:tedpermission:2.0.0' // 추가해야 하는 부분
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'

    implementation 'com.android.volley:volley:1.1.1'//서버통신 관련 라이브러리
}

여기까지 수정하신 후 xml 파일을 만들어주어야 합니다.
layout이 아닌 xml로 만들어야 함! 저는 헤맸네요 ㅎㅎ

# file_paths.xml

<?xml version="1.0" encoding="utf-8"?>
<paths
    xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path
        name="my_images"
        path="Android/data/com.example.test/files/Pictures"/>
</paths>