카메라 사용

●AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.kmg.ex0414">

    <!-- 카메라 권한 설정 -->
    <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:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.Ex0414">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <!-- 파일 저장 설정 -->
        <provider
            android:authorities="com.kmg.ex0414.fileprovider"
            android:name="androidx.core.content.FileProvider"
            android:grantUriPermissions="true">

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

</manifest>

 

 

 

 

 

xml이라는 Android Resource Directory만들고

 

 

 

 

 

 

그 안에 file_paths.xml 파일 만들기

 

 

●file_paths.xml

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">

    <external-files-path
        name="external_files"
        path="."/>
</paths>

 

 

 

●MainActivity

package com.kmg.ex0414;
public class MainActivity extends AppCompatActivity {
    private ImageView img;
    private Button btn_picture, btn_gallery;

    private final int REQUEST_TAKE_PICTURE = 1;
    private final int GET_GALLERY_IMAGE = 2;

    private String currentPhotoPath;

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

        img = findViewById(R.id.img);
        btn_picture = findViewById(R.id.btn_picture);
        btn_gallery = findViewById(R.id.btn_gallery);

        if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(MainActivity.this,
                    new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_EXTERNAL_STORAGE},
                    0);
        }

        //카메라 촬영기능 구현
        btn_picture.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                //startActivity(takePictureIntent);

                //사진 파일명과 임시 저장경로 정의
                try {
                    String fileName = "JPEG_"+System.currentTimeMillis();
                    File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
                    File imageFile = File.createTempFile(fileName, ".jpg", storageDir);
                    currentPhotoPath = imageFile.getAbsolutePath(); //사진파일의 절대경로 저장
                } catch (IOException e) {
                    e.printStackTrace();
                }
                //사진파일에 대한 정보를 Uri로 접근하여 인텐트에 저장
                Uri photoURI = FileProvider.getUriForFile(MainActivity.this, "com.kmg.ex0414.fileprovider", new File(currentPhotoPath));

                takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);

                //사진 촬영 후에 사진정보를 받아오기 위함
                startActivityForResult(takePictureIntent, REQUEST_TAKE_PICTURE);
            }
        });

        // 갤러리 사진 가져오기 구현
        btn_gallery.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent galleryIntent = new Intent(Intent.ACTION_PICK,MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                startActivityForResult(galleryIntent, GET_GALLERY_IMAGE);
            }
        });
    }



    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        //사진촬영 앱에 대한 요청결과 확인
        if(requestCode == REQUEST_TAKE_PICTURE && resultCode == RESULT_OK) {

            Uri picturePhotoURI = Uri.fromFile(new File(currentPhotoPath));
            img.setImageURI(picturePhotoURI);

        }else if(requestCode == GET_GALLERY_IMAGE && resultCode == RESULT_OK){
            // 갤러리에서 선택한 사진파일의 경로를 Uri객체로 생성하여 이미지뷰에 적용
            Uri galleryURI = data.getData();
            img.setImageURI(galleryURI);
        }
    }
}