Crop picture

MainActivity.java

package io.github.amadeu01.cameraproportions;

import android.Manifest;
import android.annotation.SuppressLint;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.os.Build;
import android.os.Environment;
import android.support.annotation.NonNull;
import android.support.annotation.RequiresPermission;
import android.support.v4.app.ActivityCompat;
import android.support.v4.view.ViewCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import com.github.florent37.camerafragment.CameraFragment;
import com.github.florent37.camerafragment.CameraFragmentApi;
import com.github.florent37.camerafragment.PreviewActivity;
import com.github.florent37.camerafragment.configuration.Configuration;
import com.github.florent37.camerafragment.internal.enums.MediaAction;
import com.github.florent37.camerafragment.internal.utils.Utils;
import com.github.florent37.camerafragment.listeners.CameraFragmentControlsAdapter;
import com.github.florent37.camerafragment.listeners.CameraFragmentResultAdapter;
import com.github.florent37.camerafragment.listeners.CameraFragmentResultListener;
import com.github.florent37.camerafragment.listeners.CameraFragmentStateAdapter;
import com.github.florent37.camerafragment.listeners.CameraFragmentVideoRecordTextAdapter;
import com.github.florent37.camerafragment.widgets.CameraSettingsView;
import com.github.florent37.camerafragment.widgets.CameraSwitchView;
import com.github.florent37.camerafragment.widgets.FlashSwitchView;
import com.github.florent37.camerafragment.widgets.MediaActionSwitchView;
import com.github.florent37.camerafragment.widgets.RecordButton;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

@SuppressLint("MissingPermission")
public class MainActivity extends AppCompatActivity {
    public static final String FRAGMENT_TAG = "camera";
    private static final int REQUEST_CAMERA_PERMISSIONS = 931;
    private static final int REQUEST_PREVIEW_CODE = 1001;

    CameraSettingsView settingsView;
    FlashSwitchView flashSwitchView;
    CameraSwitchView cameraSwitchView;
    RecordButton recordButton;
    MediaActionSwitchView mediaActionSwitchView;

    TextView recordDurationText;
    TextView recordSizeText;

    View cameraLayout;
    View addCameraButton;
    View videoCrop;

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

        settingsView = findViewById(R.id.settings_view);
        flashSwitchView = findViewById(R.id.flash_switch_view);
        cameraSwitchView = findViewById(R.id.front_back_camera_switcher);
        recordButton = findViewById(R.id.record_button);
        mediaActionSwitchView = findViewById(R.id.photo_video_camera_switcher);

        recordDurationText = findViewById(R.id.record_duration_text);
        recordSizeText = findViewById(R.id.record_size_mb_text);

        cameraLayout = findViewById(R.id.cameraLayout);

        addCameraButton = findViewById(R.id.addCameraButton);

        videoCrop = findViewById(R.id.view_crop);

        recordButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                onRecordButtonClicked(view);
            }
        });
    }

    public void onFlashSwitcClicked(View view) {
        final CameraFragmentApi cameraFragment = getCameraFragment();
        if (cameraFragment != null) {
            cameraFragment.toggleFlashMode();
        }
    }

    public void onSwitchCameraClicked(View view) {
        final CameraFragmentApi cameraFragment = getCameraFragment();
        if (cameraFragment != null) {
            cameraFragment.switchCameraTypeFrontBack();
        }
    }

    public void onRecordButtonClicked(View view) {
        final CameraFragmentApi cameraFragment = getCameraFragment();
        if (cameraFragment != null) {
            cameraFragment.takePhotoOrCaptureVideo(
                    new CameraFragmentResultAdapter() {
                        @Override
                        public void onVideoRecorded(String filePath) {
                            Toast.makeText(getBaseContext(), "onVideoRecorded " + filePath, Toast.LENGTH_SHORT).show();
                        }

                        @Override
                        public void onPhotoTaken(byte[] bytes, String filePath) {
                            Toast.makeText(getBaseContext(), "onPhotoTaken " + filePath, Toast.LENGTH_SHORT).show();

                        }
                    },
                    String.valueOf(Environment.getExternalStorageDirectory()),
                    "photo0" + new Random().nextLong());
        }
    }

    public void onSettingsClicked(View view) {
        final CameraFragmentApi cameraFragment = getCameraFragment();
        if (cameraFragment != null) {
            cameraFragment.openSettingDialog();
        }
    }

    public void onMediaActionSwitchClicked(View view) {
        final CameraFragmentApi cameraFragment = getCameraFragment();
        if (cameraFragment != null) {
            cameraFragment.switchActionPhotoVideo();
        }
    }

    public void onAddCameraClicked(View view) {
        if (Build.VERSION.SDK_INT > 15) {
            final String[] permissions = {
                    Manifest.permission.CAMERA,
                    Manifest.permission.RECORD_AUDIO,
                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
                    Manifest.permission.READ_EXTERNAL_STORAGE};

            final List<String> permissionsToRequest = new ArrayList<>();
            for (String permission : permissions) {
                if (ActivityCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED) {
                    permissionsToRequest.add(permission);
                }
            }
            if (!permissionsToRequest.isEmpty()) {
                ActivityCompat.requestPermissions(this, permissionsToRequest.toArray(new String[permissionsToRequest.size()]), REQUEST_CAMERA_PERMISSIONS);
            } else addCamera();
        } else {
            addCamera();
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (grantResults.length != 0) {
            addCamera();
        }
    }

    private String bitmapToFile(Bitmap bitmap) {
        try {
            String fileName = "photo" + new Random().nextLong() + ".jpg";
            File file = new File(Environment.getExternalStorageDirectory(), fileName);
            file.createNewFile();

            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.JPEG, 100 , byteArrayOutputStream);

            FileOutputStream fileOutputStream = new FileOutputStream(file);
            fileOutputStream.write(byteArrayOutputStream.toByteArray());
            fileOutputStream.flush();
            fileOutputStream.close();
            return file.getAbsolutePath();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    private int getExifOrientation(String filePath) {
        ExifInterface exif = null;
        try {
            exif = new ExifInterface(filePath);
        } catch (IOException ignore) {
        }
        return exif == null ? ExifInterface.ORIENTATION_UNDEFINED :
                exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED);
    }

    @RequiresPermission(Manifest.permission.CAMERA)
    public void addCamera() {
        addCameraButton.setVisibility(View.GONE);
        cameraLayout.setVisibility(View.VISIBLE);

        final CameraFragment cameraFragment =
                CameraFragment.newInstance(
                        new Configuration.Builder()
                                .setCamera(Configuration.CAMERA_FACE_REAR)
                                .setMediaQuality(Configuration.MEDIA_QUALITY_HIGHEST)
                                .build()
                );
        getSupportFragmentManager().beginTransaction()
                .replace(R.id.content, cameraFragment, FRAGMENT_TAG)
                .commitAllowingStateLoss();


        if (cameraFragment != null) {
            cameraFragment.setResultListener(new CameraFragmentResultListener() {
                @Override
                public void onVideoRecorded(String filePath) {
                    Intent intent = PreviewActivity.newIntentVideo(MainActivity.this, filePath);
                    startActivityForResult(intent, REQUEST_PREVIEW_CODE);
                }

                @Override
                public void onPhotoTaken(byte[] bytes, String filePath) {
                    //get width
                    int exifOrientationOriginal = getExifOrientation(filePath);
                    int cameraFragmentWidthInPx = cameraLayout.getWidth();
                    int cameraCropWidthInPx = videoCrop.getWidth();
                    int cameraCropHeightInPx = videoCrop.getHeight();
                    String mimeType = Utils.getMimeType(filePath);
                    Bitmap originalImage = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
                    int originalImageHeight = originalImage.getWidth();
                    int originalImageWidth = originalImage.getHeight();

                    float proportionWidthHeightOriginalImage = ((float) originalImageHeight) / originalImageWidth;
                    int cameraFragmentHeightInPx = (int) (proportionWidthHeightOriginalImage*cameraFragmentWidthInPx);

                    float scale = originalImageHeight/((float) cameraFragmentWidthInPx);
                    int cropWidth = (int) (cameraCropWidthInPx*scale);
                    int cropHeight = (int) (cameraCropHeightInPx*scale);
                    int left = (originalImageWidth - cropWidth)/2;
                    int top = (originalImageHeight - cropHeight)/2;

                    Matrix rotationMatrix = new Matrix();
//                    rotationMatrix.postRotate(90);
                    Bitmap imagemCortada = Bitmap.createBitmap(originalImage, left, top, cropWidth, cropHeight, rotationMatrix, false);
                    filePath = bitmapToFile(imagemCortada);
                    String mimeTypeAfterCropted = Utils.getMimeType(filePath);

                    final ExifInterface exif;
                    try {
                        exif = new ExifInterface(filePath);
                        exif.setAttribute(ExifInterface.TAG_ORIENTATION, "" + exifOrientationOriginal);
                        exif.saveAttributes();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                    Intent intent = PreviewActivity.newIntentPhoto(MainActivity.this, filePath);
                    intent.putExtra("media_action_arg", Configuration.MEDIA_ACTION_PHOTO);
                    startActivityForResult(intent, REQUEST_PREVIEW_CODE);
                }
            });


            cameraFragment.setStateListener(new CameraFragmentStateAdapter() {

                @Override
                public void onCurrentCameraBack() {
                    cameraSwitchView.displayBackCamera();
                }

                @Override
                public void onCurrentCameraFront() {
                    cameraSwitchView.displayFrontCamera();
                }

                @Override
                public void onFlashAuto() {
                    flashSwitchView.displayFlashAuto();
                }

                @Override
                public void onFlashOn() {
                    flashSwitchView.displayFlashOn();
                }

                @Override
                public void onFlashOff() {
                    flashSwitchView.displayFlashOff();
                }

                @Override
                public void onCameraSetupForPhoto() {
                    mediaActionSwitchView.displayActionWillSwitchVideo();

                    recordButton.displayPhotoState();
                    flashSwitchView.setVisibility(View.VISIBLE);
                }

                @Override
                public void onCameraSetupForVideo() {
                    mediaActionSwitchView.displayActionWillSwitchPhoto();

                    recordButton.displayVideoRecordStateReady();
                    flashSwitchView.setVisibility(View.GONE);
                }

                @Override
                public void shouldRotateControls(int degrees) {
                    ViewCompat.setRotation(cameraSwitchView, degrees);
                    ViewCompat.setRotation(mediaActionSwitchView, degrees);
                    ViewCompat.setRotation(flashSwitchView, degrees);
                    ViewCompat.setRotation(recordDurationText, degrees);
                    ViewCompat.setRotation(recordSizeText, degrees);
                }

                @Override
                public void onRecordStateVideoReadyForRecord() {
                    recordButton.displayVideoRecordStateReady();
                }

                @Override
                public void onRecordStateVideoInProgress() {
                    recordButton.displayVideoRecordStateInProgress();
                }

                @Override
                public void onRecordStatePhoto() {
                    recordButton.displayPhotoState();
                }

                @Override
                public void onStopVideoRecord() {
                    recordSizeText.setVisibility(View.GONE);
                    //cameraSwitchView.setVisibility(View.VISIBLE);
                    settingsView.setVisibility(View.VISIBLE);
                }

                @Override
                public void onStartVideoRecord(File outputFile) {
                }
            });

            cameraFragment.setControlsListener(new CameraFragmentControlsAdapter() {
                @Override
                public void lockControls() {
                    cameraSwitchView.setEnabled(false);
                    recordButton.setEnabled(false);
                    settingsView.setEnabled(false);
                    flashSwitchView.setEnabled(false);
                }

                @Override
                public void unLockControls() {
                    cameraSwitchView.setEnabled(true);
                    recordButton.setEnabled(true);
                    settingsView.setEnabled(true);
                    flashSwitchView.setEnabled(true);
                }

                @Override
                public void allowCameraSwitching(boolean allow) {
                    cameraSwitchView.setVisibility(allow ? View.VISIBLE : View.GONE);
                }

                @Override
                public void allowRecord(boolean allow) {
                    recordButton.setEnabled(allow);
                }

                @Override
                public void setMediaActionSwitchVisible(boolean visible) {
                    mediaActionSwitchView.setVisibility(visible ? View.VISIBLE : View.INVISIBLE);
                }
            });

            cameraFragment.setTextListener(new CameraFragmentVideoRecordTextAdapter() {
                @Override
                public void setRecordSizeText(long size, String text) {
                    recordSizeText.setText(text);
                }

                @Override
                public void setRecordSizeTextVisible(boolean visible) {
                    recordSizeText.setVisibility(visible ? View.VISIBLE : View.GONE);
                }

                @Override
                public void setRecordDurationText(String text) {
                    recordDurationText.setText(text);
                }

                @Override
                public void setRecordDurationTextVisible(boolean visible) {
                    recordDurationText.setVisibility(visible ? View.VISIBLE : View.GONE);
                }
            });
        }
    }

    private CameraFragmentApi getCameraFragment() {
        return (CameraFragmentApi) getSupportFragmentManager().findFragmentByTag(FRAGMENT_TAG);
    }
}