使用KOTLIN

Question

这是我的 CameraFragment 中的代码，我希望它传递/共享 捕获的图像到我的 CrimeListFragment < / strong>（我的其他活动）。。我不知道该如何称呼。任何愿意帮助的人？

private lateinit var imageView: ImageView
private lateinit var button: Button
private lateinit var next: ImageButton
private var photoFile: File? = null
private val CAPTURE_IMAGE_REQUEST = 1
private lateinit var mCurrentPhotoPath: String
private val IMAGE_DIRECTORY_NAME = "DCIM"

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.fragment_camera)


    imageView = findViewById(id.imageView)
    button = findViewById(R.id.btnCaptureImage)
    next = findViewById(R.id.imgBtnNext)

    /*clicking button camera*/
    button.setOnClickListener {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

            captureImage()
        } else {
            captureImage2()
        }
    }

   next.setOnClickListener {
        if (imageView.getDrawable() == null){
            Toast.makeText(this,"Empty Image", Toast.LENGTH_SHORT).show()
        }
        else {

            val intent = Intent(this, CrimeListFragment::class.java)
            startActivity(intent)


        }


    }

}


/* Capture Image function for 4.4.4 and lower. Not tested for Android Version 3 and 2 */
private fun captureImage2() {

    try {
        val cameraIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
        photoFile = createImageFile4()
        if (photoFile != null) {
            displayMessage(baseContext, photoFile!!.getAbsolutePath())
            Log.i("Mayank", photoFile!!.getAbsolutePath())
            val photoURI = Uri.fromFile(photoFile)
            cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI)
            startActivityForResult(cameraIntent, CAPTURE_IMAGE_REQUEST)
           // intent.putExtra("crimePicture", photoFile)
        }
    } catch (e: Exception) {
        displayMessage(baseContext, "Camera is not available." + e.toString())
    }

}

private fun captureImage() {

    if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE), 0)
    } else {
        val takePictureIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
        if (takePictureIntent.resolveActivity(packageManager) != null) {
            // Create the File where the photo should go
            try {

                photoFile = createImageFile()
                displayMessage(baseContext, photoFile!!.getAbsolutePath())
                Log.i("Mayank", photoFile!!.getAbsolutePath())

                // Continue only if the File was successfully created
                if (photoFile != null) {


                    var photoURI = FileProvider.getUriForFile(this,
                        "com.testcrimereportingapp.crimereportingapp69.fileprovider",
                        photoFile!!
                    )

                    takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI)

                    startActivityForResult(takePictureIntent, CAPTURE_IMAGE_REQUEST)

                }
            } catch (ex: Exception) {
                // Error occurred while creating the File
                displayMessage(baseContext,"Capture Image Bug: "  + ex.message.toString())
            }


        } else {
            displayMessage(baseContext, "Nullll")
        }
    }


}

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    //Bundle extras = data.getExtras();
    //Bitmap imageBitmap = (Bitmap) extras.get("data");
    //imageView.setImageBitmap(imageBitmap);

    if (requestCode == CAPTURE_IMAGE_REQUEST && resultCode == Activity.RESULT_OK) {

        val myBitmap = BitmapFactory.decodeFile(photoFile!!.getAbsolutePath())

        imageView.setImageBitmap(myBitmap)
    } else {
        displayMessage(baseContext, "Request cancelled or something went wrong.")
    }
}

private fun createImageFile4(): File? {
    // External sdcard location
    val mediaStorageDir = File(
        Environment
            .getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
        IMAGE_DIRECTORY_NAME)
    // Create the storage directory if it does not exist
    if (!mediaStorageDir.exists()) {
        if (!mediaStorageDir.mkdirs()) {
            displayMessage(baseContext, "Unable to create directory.")
            return null
        }
    }

    val timeStamp = SimpleDateFormat("yyyyMMdd_HHmmss",
        Locale.getDefault()).format(Date())

    return File(mediaStorageDir.path + File.separator
            + "IMG_" + timeStamp + ".jpg")

}

@Throws(IOException::class)
private fun createImageFile(): File {
    // Create an image file name
    val timeStamp = SimpleDateFormat("yyyyMMdd_HHmmss").format(Date())
    val imageFileName = "JPEG_" + timeStamp + "_"
    val storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES)
    val image = File.createTempFile(
        imageFileName, /* prefix */
        ".jpg", /* suffix */
        storageDir      /* directory */
    )

    // Save a file: path for use with ACTION_VIEW intents
    mCurrentPhotoPath = image.absolutePath
    return image
}

private fun displayMessage(context: Context, message: String) {
    Toast.makeText(context, message, Toast.LENGTH_LONG).show()
}

override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
    if (requestCode == 0) {
        if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED
            && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
            captureImage()
        }
    }

}

这是我第一次在此处对Stack Overflow发表问题。 非常感谢在那里有好心的人！ 这些代码来自这个人https://www.youtube.com/watch?v=5wbeWN4hQt0&t=110s ..归功于他