How can get import function here? - android-studio

Question

package com.example.myapplication;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.media.ThumbnailUtils;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import org.tensorflow.lite.DataType;
import org.tensorflow.lite.schema.Model;
import org.tensorflow.lite.support.tensorbuffer.TensorBuffer;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
public class MainActivity extends AppCompatActivity {
TextView result, confidence;
ImageView imageView;
Button picture;
int imageSize = 224;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
result = findViewById(R.id.result);
confidence = findViewById(R.id.confidence);
imageView = findViewById(R.id.imageView);
picture = findViewById(R.id.button);
picture.setOnClickListener(new View.OnClickListener() {
#RequiresApi(api = Build.VERSION_CODES.M)
#Override
public void onClick(View view) {
// Launch camera if we have permission
if (checkSelfPermission(Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 1);
} else {
//Request camera permission if we don't have it.
requestPermissions(new String[]{Manifest.permission.CAMERA}, 100);
}
}
});
}
public void classifyImage(Bitmap image){
try {
Model model = Model.newInstance(getApplicationContext());
//creates inputs for reference.
TensorBuffer inputFeature0 = TensorBuffer.createFixedSize(new int[]{1, 224, 224, 3}, DataType.FLOAT32);
ByteBuffer byteBuffer = ByteBuffer.allocateDirect(4* imageSize * imageSize * 5);
byteBuffer.order(ByteOrder.nativeOrder());
int [] intValues = new int[imageSize * imageSize];
image.getPixels(intValues, 0, image.getWidth(),0,0, image.getWidth(), image.getHeight());
int pixel = 0;
for(int i = 0; i < imageSize; i++){
for(int j = 0; j< imageSize; j++){
int val = intValues[pixel++]; //RGB
byteBuffer.putFloat(((val>> 16) & 0xFF) * (1.f/255.f));
byteBuffer.putFloat(((val>> 8) & 0xFF) * (1.f/255.f));
byteBuffer.putFloat((val & 0xFF) * (1.f/255.f));
}
}
inputFeature0.loadBuffer(byteBuffer);
//Runs model inference and gets result.
Model.Outputs outputs = model.process(inputFeature0);
TensorBuffer outputFeature0 = outputs.getOutputFeature0AsTensorBuffer();
float[] confidence = outputFeature0.getFloatArray();
//Release model resources if no longer used.
model.close();
}catch (IOException e) {
//TODO Handle the exception
}
}
#Override
public void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
if (requestCode == 1 && resultCode == RESULT_OK) {
Bitmap image = (Bitmap) data.getExtras().get("data");
int dimension = Math.min(image.getWidth(), image.getHeight());
image = ThumbnailUtils.extractThumbnail(image, dimension, dimension);
imageView.setImageBitmap(image);
image = Bitmap.createScaledBitmap(image, imageSize, imageSize, false);
classifyImage(image);
}
super.onActivityResult(requestCode, resultCode, data);
}
}
I am making an app in android studio. My app includes tensorflow lite. I refer to this youtube video https://www.youtube.com/watch?v=jhGm4KDafKU
But I got similar problems. This is the picture that shows problems. In image, all problems is about 'can not resolve method or symbol' .
So I found these in google but I can't understand anything. I mean I'm just following the youtube... Guys... Can you explain the meaning of 'cannot resolve method or symbol'? Can you show me what I have to write and where to put. According to explaining maybe I miss import function but how do I do it..?