Android 为什么我的相机能工作？我以为牛轧糖应该解决这个安全问题？

我所看到的一切都表明，您需要在AndroidManifest中添加一个

部分，并且需要引用一个XML资源文件，该文件表示您想要的图像外部文件路径

我没有做这两件事，但我发现的代码片段是有效的，即使是牛轧糖和更新的

我想知道为什么。我不知道是什么导致了这一切

这是我的Android清单：

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

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        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>

</manifest>

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private static final int REQUEST_TAKE_PHOTO = 1;

    Button btnTakePhoto;
    ImageView ivPreview;

    String mCurrentPhotoPath;

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

        initInstances();
    }

    private void initInstances() {
        btnTakePhoto = (Button) findViewById(R.id.btnTakePhoto);
        ivPreview = (ImageView) findViewById(R.id.ivPreview);

        btnTakePhoto.setOnClickListener(this);
    }

    /////////////////////
    // OnClickListener //
    /////////////////////

    @Override
    public void onClick(View view) {
        if (view == btnTakePhoto) {
            MainActivityPermissionsDispatcher.startCameraWithCheck(this);
        }
    }

    ////////////
    // Camera //
    ////////////

    @NeedsPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)
    void startCamera() {
        try {
            dispatchTakePictureIntent();
        } catch (IOException e) {
        }
    }

    @OnShowRationale(Manifest.permission.WRITE_EXTERNAL_STORAGE)
    void showRationaleForCamera(final PermissionRequest request) {
        new AlertDialog.Builder(this)
                .setMessage("Access to External Storage is required")
                .setPositiveButton("Allow", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        request.proceed();
                    }
                })
                .setNegativeButton("Deny", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialogInterface, int i) {
                        request.cancel();
                    }
                })
                .show();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_TAKE_PHOTO && resultCode == RESULT_OK) {
            // Show the thumbnail on ImageView
            Uri imageUri = Uri.parse(mCurrentPhotoPath);
            File file = new File(imageUri.getPath());
            try {
                InputStream ims = new FileInputStream(file);
                ivPreview.setImageBitmap(BitmapFactory.decodeStream(ims));
            } catch (FileNotFoundException e) {
                return;
            }

            // ScanFile so it will be appeared on Gallery
            MediaScannerConnection.scanFile(MainActivity.this,
                    new String[]{imageUri.getPath()}, null,
                    new MediaScannerConnection.OnScanCompletedListener() {
                        public void onScanCompleted(String path, Uri uri) {
                        }
                    });
        }
    }

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

    private File createImageFile() throws IOException {
        // Create an image file name
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        String imageFileName = "JPEG_" + timeStamp + "_";
        File storageDir = new File(Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_DCIM), "Camera");
        File image = File.createTempFile(
                imageFileName,  /* prefix */
                ".jpg",         /* suffix */
                storageDir      /* directory */
        );

        // Save a file: path for use with ACTION_VIEW intents
        mCurrentPhotoPath = "file:" + image.getAbsolutePath();
        return image;
    }

    private void dispatchTakePictureIntent() throws IOException {
        Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        // Ensure that there's a camera activity to handle the intent
        if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
            // Create the File where the photo should go
            File photoFile = null;
            try {
                photoFile = createImageFile();
            } catch (IOException ex) {
                // Error occurred while creating the File
                return;
            }
            // Continue only if the File was successfully created
            if (photoFile != null) {
                Uri photoURI = Uri.fromFile(createImageFile());
                takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
                startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
            }
        }
    }
}