When you first launch the application after setting the permissions, a black screen, after minimizing and maximizing the application, everything is fine?

Question

Android

When you first launch the application after setting the permissions, a black screen, after minimizing and maximizing the application, everything is fine?

public class MainActivity extends AppCompatActivity {

    private static final int REQUEST_CODE_PERMISSION =1;

    public SurfaceView surfaceView;
    Camera camera;
    public File photoFile, file;
    SurfaceHolder holder;


    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // проверка разрешения камеры и памяти
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) == PackageManager.PERMISSION_DENIED
        || ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED
        || ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) ==  PackageManager.PERMISSION_DENIED) {

        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_EXTERNAL_STORAGE}, 1000);

        }
        else {

            initialize();
        }


    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult( requestCode,  permissions,  grantResults);

        if (requestCode==1000) {

            initialize();


        }
    }



    private void initialize(){
        surfaceView = (SurfaceView) findViewById(R.id.surfaceView);
        holder = surfaceView.getHolder();
        holder.addCallback(new SurfaceHolder.Callback() {
            @Override
            public void surfaceCreated(SurfaceHolder holder) {
                try {
                    camera.setPreviewDisplay(holder);
                    camera.startPreview();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            @Override
            public void surfaceChanged(SurfaceHolder holder, int format,
                                       int width, int height) {
            }
            @Override
            public void surfaceDestroyed(SurfaceHolder holder) {
            }
        });
        File pictures = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
        photoFile = new File(pictures, "myphoto.jpg");
        camera = Camera.open();// открываем затвор
        camera.setDisplayOrientation(90);// ориентируем камеру

    }

}<code lang="html">
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.watchman">
    <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" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <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/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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


</code>