Android Camera : data intent returns null

Question

I have an android application which contains multiple activities.

In one of them I\'m using a button which will call the device camera :

public void         


        

Answer 1

After much try and study, I was able to figure it out. First, the variable data from Intent will always be null so, therefore, checking for !null will crash your app so long you are passing a URI to startActivityForResult.Follow the example below. I will be using Kotlin.

1. Open the camera intent

   fun addBathroomPhoto(){
   addbathroomphoto.setOnClickListener{
   
       request_capture_image=2
   
       var takePictureIntent:Intent?
       takePictureIntent =Intent(MediaStore.ACTION_IMAGE_CAPTURE)
       if(takePictureIntent.resolveActivity(activity?.getPackageManager()) != null){
   
           val photoFile: File? = try {
               createImageFile()
           } catch (ex: IOException) {
               // Error occurred while creating the File
   
               null
           }
   
           if (photoFile != null) {
               val photoURI: Uri = FileProvider.getUriForFile(
                   activity!!,
                   "ogavenue.ng.hotelroomkeeping.fileprovider",photoFile)
               takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                   photoURI);
               startActivityForResult(takePictureIntent,
                   request_capture_image);
           }
   
   
       }
   
   }
   

   }`

2. Create the createImageFile().But you MUST make the imageFilePath variable global. Example on how to create it is on Android official documentation and pretty straightforward

3. Get Intent

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
   
   if (requestCode == 1 && resultCode == RESULT_OK) {
       add_room_photo_txt.text=""
       var myBitmap=BitmapFactory.decodeFile(imageFilePath)
       addroomphoto.setImageBitmap(myBitmap)
       var file=File(imageFilePath)
       var fis=FileInputStream(file)
       var bm = BitmapFactory.decodeStream(fis);
       roomphoto=getBytesFromBitmap(bm) }}
   

4. The getBytesFromBitmap method

     fun getBytesFromBitmap(bitmap:Bitmap):ByteArray{
   
     var stream=ByteArrayOutputStream()
     bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
     return stream.toByteArray();
     }
   

I hope this helps.