개발 아카이브

안드로이드 6.0으로 업그레이드 되면서 권한설정이 방식이 변경되었다.

기존에는 앱에서 요청하는 모든 권한을 허용해야 앱을 사용할 수 있다.

구글은 그러한 권한방식이 좋아하지 않았는지 바꿔버렸다.

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public class MainActivity extends AppCompatActivity {
    private Activity mainActivity = this;

    private static final int REQUEST_MICROPHONE = 3;
    private static final int REQUEST_EXTERNAL_STORAGE = 2;
    private static final int REQUEST_CAMERA = 1;

    private TextView resultText;

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

        Button cameraBtn = (Button)findViewById(R.id.cameraBtn);
        Button storageBtn = (Button)findViewById(R.id.storageBtn);
        Button micBtn = (Button)findViewById(R.id.micBtn);

        resultText = (TextView)findViewById(R.id.resultText);

        cameraBtn.setOnClickListener(buttonClickListener);
        storageBtn.setOnClickListener(buttonClickListener);
        micBtn.setOnClickListener(buttonClickListener);
    }

    private View.OnClickListener buttonClickListener = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            int id = v.getId();
            switch (id) {
                case R.id.cameraBtn:
                    int permissionCamera = ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CAMERA);
                    if(permissionCamera == PackageManager.PERMISSION_DENIED) {
                        ActivityCompat.requestPermissions(mainActivity, new String[]{Manifest.permission.CAMERA}, REQUEST_CAMERA);
                    } else {
                        resultText.setText("camera permission authorized");
                    }
                    break;
                case R.id.storageBtn:
                    int permissionReadStorage = ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.READ_EXTERNAL_STORAGE);
                    int permissionWriteStorage = ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.WRITE_EXTERNAL_STORAGE);
                    if(permissionReadStorage == PackageManager.PERMISSION_DENIED || permissionWriteStorage == PackageManager.PERMISSION_DENIED) {
                        ActivityCompat.requestPermissions(mainActivity, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_EXTERNAL_STORAGE);
                    } else {
                        resultText.setText("read/write storage permission authorized");
                    }
                    break;
                case R.id.micBtn:
                    int permissionAudio = ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.RECORD_AUDIO);
                    if(permissionAudio == PackageManager.PERMISSION_DENIED) {
                        ActivityCompat.requestPermissions(mainActivity, new String[]{Manifest.permission.RECORD_AUDIO}, REQUEST_MICROPHONE);
                    } else {
                        resultText.setText("recording audio permission authorized");
                    }
                    break;
            }
        }
    };

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        switch (requestCode) {
            case REQUEST_CAMERA:
                for (int i = 0; i < permissions.length; i++) {
                    String permission = permissions[i];
                    int grantResult = grantResults[i];
                    if (permission.equals(Manifest.permission.CAMERA)) {
                        if(grantResult == PackageManager.PERMISSION_GRANTED) {
                            resultText.setText("camera permission authorized");
                        } else {
                            resultText.setText("camera permission denied");
                        }
                    }
                }
                break;
            case REQUEST_EXTERNAL_STORAGE:
                for (int i = 0; i < permissions.length; i++) {
                    String permission = permissions[i];
                    int grantResult = grantResults[i];
                    if (permission.equals(Manifest.permission.READ_EXTERNAL_STORAGE)) {
                        if(grantResult == PackageManager.PERMISSION_GRANTED) {
                            resultText.setText("read/write storage permission authorized");
                        } else {
                            resultText.setText("read/write storage permission denied");
                        }
                    }
                }
                break;
            case REQUEST_MICROPHONE:
                for (int i = 0; i < permissions.length; i++) {
                    String permission = permissions[i];
                    int grantResult = grantResults[i];
                    if (permission.equals(Manifest.permission.RECORD_AUDIO)) {
                        if(grantResult == PackageManager.PERMISSION_GRANTED) {
                            resultText.setText("recording audio permission authorized");
                        } else {
                            resultText.setText("recording audio permission denied");
                        }
                    }
                }
                break;
        }
    }
}

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int permissionCamera = ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CAMERA);
if(permissionCamera == PackageManager.PERMISSION_DENIED) {
    ActivityCompat.requestPermissions(mainActivity, new String[]{Manifest.permission.CAMERA}, REQUEST_CAMERA);
} else {
    resultText.setText("camera permission authorized");
}

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switch (requestCode) {
    case REQUEST_CAMERA:
        for (int i = 0; i < permissions.length; i++) {
            String permission = permissions[i];
            int grantResult = grantResults[i];
            if (permission.equals(Manifest.permission.CAMERA)) {
                if(grantResult == PackageManager.PERMISSION_GRANTED) {
                    resultText.setText("camera permission authorized");
                } else {
                    resultText.setText("camera permission denied");
                }
            }
        }
        break;

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onRequestPermissionsResult는 사용자의 권한 선택을 한 내용들이 들어있다.

여기서 Camera의 권한이 있다면 camera permission authorized가 출력되고

권한이 없다면 camera permission denied가 출력된다.

예제 코드는

android permisstion : https://github.com/pchan1401-ICIL/AndroidPermission

더 좋은 설명은 아래 블로그를 참고하자

박상권님 블로그 : http://gun0912.tistory.com/55