I need to resolve the error that I'm getting and want to successfully run this activity.
DetectionActivity.kt
package-name
import ai.fritz.core.Fritz
import ai.fritz.fritzvisionobjectmodel.FritzVisionObjectPredictor
import ai.fritz.vision.inputs.FritzVisionImage
import android.graphics.Bitmap
import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.renderscript.Allocation
import android.renderscript.Element
import android.renderscript.RenderScript
import android.renderscript.ScriptIntrinsicYuvToRGB
import kotlinx.android.synthetic.main.activity_detection.*
class DetectionActivity : AppCompatActivity() {
private lateinit var renderScript: RenderScript
private lateinit var yuvToRGB: ScriptIntrinsicYuvToRGB
private var yuvDataLength: Int = 0
private lateinit var allocationIn: Allocation
private lateinit var allocationOut: Allocation
private lateinit var bitmapOut: Bitmap
private val itemMap by lazy {
hashMapOf<String, Int>()
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
Fritz.configure(this, "Fritz-token-key")
//val onDeviceModel = ObjectDetectionOnDeviceModel()
//val objectPredictor = FritzVision.ObjectDetection.getPredictor(onDeviceModel)
val objectPredictor = FritzVisionObjectPredictor.getInstance(this)
var fritzVisionImage: FritzVisionImage
cameraView.addFrameProcessor {
if (yuvDataLength == 0) {
//Run this only once
initializeData()
}
//Camera Preview returns NV21, so convert it to Bitmap :
//https://stackoverflow.com/a/43551798/5471095
allocationIn.copyFrom(it.data)
yuvToRGB.forEach(allocationOut)
allocationOut.copyTo(bitmapOut)
fritzVisionImage = FritzVisionImage.fromBitmap(bitmapOut, it.rotation)
//val visionResult = objectPredictor.predict(fritzVisionImage)
val visionObjects = objectPredictor.predict(fritzVisionImage)
//Clear the existing map
itemMap.clear()
//Convert the list of objects detected into a Map so that we can track count of similar items
//visionResult.visionObjects.forEach { visionObject ->
visionObjects.forEach{ visionObject ->
if (itemMap.containsKey(visionObject.visionLabel.text))
itemMap[visionObject.visionLabel.text] = itemMap[visionObject.visionLabel.text]!! + 1
itemMap[visionObject.visionLabel.text] = 1
}
//Print the detected items on the screen
runOnUiThread {
tvDetectedItem.text = ""
itemMap.forEach { map ->
tvDetectedItem.append("Detected ${map.value} ${map.key}\n")
}
}
}
}
private fun initializeData() {
yuvDataLength = cameraView.previewSize?.height!! * cameraView.previewSize?.width!! * 3 / 2
renderScript = RenderScript.create(baseContext)
yuvToRGB = ScriptIntrinsicYuvToRGB.create(renderScript, Element.U8_4(renderScript))
allocationIn = Allocation.createSized(renderScript, Element.U8(renderScript), yuvDataLength)
bitmapOut = Bitmap.createBitmap(cameraView.previewSize?.width!!, cameraView.previewSize?.height!!, Bitmap.Config.ARGB_8888)
allocationOut = Allocation.createFromBitmap(renderScript, bitmapOut)
yuvToRGB.setInput(allocationIn)
}
override fun onStart() {
super.onStart()
cameraView.start()
}
override fun onStop() {
super.onStop()
cameraView.stop()
}
}
activity_detection.xml --Layout File for the above respective activity
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.arca.DetectionActivity">
<com.otaliastudios.cameraview.CameraView
android:id="@+id/cameraView"
android:keepScreenOn="true"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<TextView
android:layout_marginBottom="32dp"
android:textSize="32sp"
android:textStyle="bold"
android:textColor="#B09954"
android:id="@+id/tvDetectedItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center_horizontal" />
</FrameLayout>
I even added the required dependencies and all but getting this Runtime Error.
E/AndroidRuntime: FATAL EXCEPTION: main
Process: pakage-name, PID: pid-number
java.lang.NoSuchMethodError: No static method isInitialized(Landroid/content/Context;)Z in class Lai/fritz/core/Fritz; or its super classes (declaration of 'ai.fritz.core.Fritz' appears in /data/app/pakage-name-79eLdVK0LI_fYwGGKlCPVQ==/base.apk)
at com.example.arca.DetectionActivity.onCreate(DetectionActivity.kt:35)
D/GetRequestTask: Api Request: https://api.fritz.ai/sdk/v1/session/settings
Please tell me the problem and how can I fix it?? Please tell me a workable solution for I have tried and got irritated on the same. If not, what can I use for adding object detection functionality to my project android application which is better to use with free resources and such? Do tell the steps in detail for the same.
