Как добавить наложение вида как силуэт в приложении камеры по умолчанию

Question

Так что в настоящее время я разрабатываю приложение с функцией наложения видов или изображений в режиме предварительного просмотра камеры. Я пробовал этот код:

btn_Capture.setOnClickListener {
        //if system os is Marshmallow or Above, we need to request runtime permission
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
            if (checkSelfPermission(Manifest.permission.CAMERA)
                == PackageManager.PERMISSION_DENIED ||
                checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE)
                == PackageManager.PERMISSION_DENIED){
                //permission was not enabled
                val permission = arrayOf(Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE)
                //show popup to request permission
                requestPermissions(permission, PERMISSION_CODE)
            }
            else{
                //permission already granted
                showDialog()
                //openCamera()
            }
        }
        else{
            //system os is < marshmallow
            showDialog()
            //openCamera()
        }
    }

А вот моя функция showDialog:

private fun showDialog(){
    val listItems = arrayOf("3 meters", "4 meters", "5 meters", "6 meters", "7 meters", "8 meters", "9 meters", "10 meters", "11 meters")

    val builder = AlertDialog.Builder(this@MainActivity)
    builder.setTitle("Choose distance of viewport")

    val checkedItem = 0 //this will checked the item when user open the dialog
    builder.setSingleChoiceItems(
        listItems, checkedItem
    ) { dialog, which ->
        SelectedRadio = listItems[which]
    }

    builder.setPositiveButton(
        "Go"
    ) { dialog, which -> dialog.dismiss()
        Toast.makeText(this@MainActivity,SelectedRadio,Toast.LENGTH_LONG).show()
        openCamera()
    }

    val dialog = builder.create()
    dialog.show()
}

Так что я хочу наложить изображение каждый раз, когда я открываю приложение камеры. Я также попытался создать собственный макет и прикрепить его к родительскому элементу камеры, но он не работает так, как я хочу.

Answer 1

Итак, я сделал это следующим образом

Манифест Android

<?xml version="1.0" encoding="utf-8"?>

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

<uses-feature
    android:name="android.hardware.camera"
    android:required="true" />

<application
    android:allowBackup="true"
    android:hardwareAccelerated="false"
    android:icon="@drawable/temaiconfinalllll"
    android:label="@string/app_name"
    android:roundIcon="@drawable/temaiconfinalllll"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity
        android:name=".CustomCamera2"
        android:hardwareAccelerated="true"
        android:label="CustomCamera2"
        android:screenOrientation="landscape"
        android:theme="@style/AppTheme.NoActionBar"/>
    <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:screenOrientation="landscape"
        android:theme="@style/AppTheme.NoActionBar">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

Это моя пользовательская активность камеры

class CustomCamera2 : AppCompatActivity() {

   lateinit var newView: ImageView
   var pattern = "yyyy-MM-dd HH:mm:ss"
   var simpleDateFormat = SimpleDateFormat(pattern)
   var date = simpleDateFormat.format(Date())
   var fotoapparat: Fotoapparat? = null
   var filename = date + "Tema.png"
   val sd = Environment.getExternalStorageDirectory()
   val finalsd = sd.toString() + "/Pictures"
   var dest = File(finalsd, filename)
   var fotoapparatState : FotoapparatState? = null
   var cameraStatus : CameraState? = null
   var flashState: FlashState? = null
   val permissions = arrayOf(android.Manifest.permission.CAMERA, android.Manifest.permission.WRITE_EXTERNAL_STORAGE, android.Manifest.permission.READ_EXTERNAL_STORAGE)

   override fun onCreate(savedInstanceState: Bundle?) {
       super.onCreate(savedInstanceState)
       setContentView(R.layout.content_custom_camera2)
       createFotoapparat()
       cameraStatus = CameraState.BACK
       flashState = FlashState.OFF
       fotoapparatState = FotoapparatState.OFF

       myview.setLayerType(View.LAYER_TYPE_SOFTWARE,null)

       fab_camera.setOnClickListener {
           takePhoto()
       }

       fab_switch_camera.setOnClickListener {
           switchCamera()
       }

       fab_flash.setOnClickListener {
           changeFlashState()
       }

   }

   private fun createFotoapparat(){
       val cameraView = findViewById<CameraView>(R.id.camera_view)

       fotoapparat = Fotoapparat(
           context = this,
           view = cameraView,
           scaleType = ScaleType.CenterCrop,
           lensPosition = back(),
           logger = loggers(
               logcat()
           ),
           cameraErrorCallback = { error ->
               println("Recorder errors: $error")
           }
       )
   }

   private fun changeFlashState() {
       fotoapparat?.updateConfiguration(
           CameraConfiguration(
              flashMode = if(flashState == FlashState.TORCH) off() else torch()
           )
       )

       if(flashState == FlashState.TORCH) flashState = FlashState.OFF
       else flashState = FlashState.TORCH
   }

   private fun switchCamera() {
       fotoapparat?.switchTo(
           lensPosition =  if (cameraStatus == CameraState.BACK) front() else back(),
           cameraConfiguration = CameraConfiguration()
       )

       if(cameraStatus == CameraState.BACK) cameraStatus = CameraState.FRONT
       else cameraStatus = CameraState.BACK
   }

   private fun takePhoto() {
       if (hasNoPermissions()) {
        requestPermission()
       }else{
           fotoapparat
               ?.takePicture()
               ?.saveToFile(dest)

           Handler().postDelayed(
               {
                   StartEdit()
               },
               1300 // value in milliseconds
           )

       }
   }

   fun StartEdit(){
       val dest2:String = dest.absolutePath.toString()
       val intent = Intent(this,EditActivity2::class.java)
       intent.putExtra("ImagePath", dest2)
       startActivity(intent)

       Toast.makeText(this,dest.toString(),Toast.LENGTH_LONG).show()
       pattern = "yyyy-MM-dd HH:mm:ss"
       simpleDateFormat = SimpleDateFormat(pattern)
       date = simpleDateFormat.format(Date())
       filename = date + "Tema.png"
       dest = File(finalsd, filename)
   }

   override fun onStart() {
       super.onStart()
       if (hasNoPermissions()) {
           requestPermission()
       }else{
           fotoapparat?.start()
           fotoapparatState = FotoapparatState.ON
       }
   }

   private fun hasNoPermissions(): Boolean{
       return ContextCompat.checkSelfPermission(this,
           Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED || ContextCompat.checkSelfPermission(this,
           Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED || ContextCompat.checkSelfPermission(this,
           Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED
   }

   fun requestPermission(){
       ActivityCompat.requestPermissions(this, permissions,0)
   }

   override fun onStop() {
       super.onStop()
       fotoapparat?.stop()
       FotoapparatState.OFF
   }

   override fun onResume() {
       super.onResume()
       if(!hasNoPermissions() && fotoapparatState == FotoapparatState.OFF){
           val intent = Intent(baseContext, MainActivity::class.java)
           startActivity(intent)
           finish()
       }
   }

   enum class CameraState{
       FRONT, BACK
   }

   enum class FlashState{
       TORCH, OFF
   }

   enum class FotoapparatState{
       ON, OFF
   }
}

Тогда это мой XML-файл

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@id/relativelayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" xmlns:app="http://schemas.android.com/apk/res-auto"
    tools:context=".MainActivity"
    android:background="@android:color/black">


    <io.fotoapparat.view.CameraView
        android:id="@+id/camera_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>



    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/fab_camera"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:fabSize="normal"
        android:src="@drawable/camera"
        android:layout_alignParentBottom="true"
        android:layout_margin="32dp"
        android:layout_centerHorizontal="true"
        app:backgroundTint="@android:color/white"/>

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/fab_flash"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:fabSize="normal"
        android:src="@drawable/torch"
        android:layout_alignParentBottom="true"
        android:layout_margin="32dp"
        app:backgroundTint="@android:color/white"/>

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/fab_switch_camera"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:fabSize="normal"
        android:src="@drawable/palit"
        android:layout_alignParentBottom="true"
        android:layout_margin="32dp"
        android:layout_alignParentRight="true"
        app:backgroundTint="@android:color/white"/>

    <!--<com.google.android.material.transformation.TransformationChildLayout
        android:id="@+id/Hello"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/guidethree"/>-->

    <ImageView
        android:id="@+id/myview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/guidethree"/>


    </RelativeLayout>