Java tutorial
package com.tester.photodetectortest; import android.Manifest; import android.content.pm.ActivityInfo; import android.content.pm.PackageManager; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Matrix; import android.hardware.Camera; import android.os.Build; import android.os.Bundle; import android.os.Environment; import android.support.design.widget.FloatingActionButton; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.RelativeLayout; import com.affectiva.android.affdex.sdk.Frame; import com.affectiva.android.affdex.sdk.detector.Detector; import com.affectiva.android.affdex.sdk.detector.Face; import com.affectiva.android.affdex.sdk.detector.PhotoDetector; import java.io.File; import java.io.FileOutputStream; import java.util.List; public class MainActivity extends AppCompatActivity implements Detector.ImageListener { public static final String TAG = MainActivity.class.getSimpleName(); private RelativeLayout mainContainer; private PhotoDetector pd; private Camera mCamera; private Preview mPreview; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); mCamera = Camera.open(1); mainContainer = (RelativeLayout) findViewById(R.id.main_container); mPreview = new Preview(this, mCamera); mainContainer.addView(mPreview, 0); pd = new PhotoDetector(this); pd.setLicensePath("sdk.license"); pd.setImageListener(this); pd.setDetectAllEmotions(true); pd.setDetectAllExpressions(true); FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab); fab.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { mCamera.takePicture(null, null, mPictureCallback); } }); } @Override protected void onResume() { super.onResume(); if (Build.VERSION.SDK_INT >= 23) { if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) { ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.CAMERA }, 28); } } this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); startDetector(); } @Override protected void onPause() { super.onPause(); stopDetector(); } void startDetector() { if (pd.isRunning() == false) pd.start(); } void stopDetector() { if (pd.isRunning() == true) pd.stop(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } @Override public void onImageResults(List<Face> list, Frame frame, float v) { if (list == null) return; if (list.size() == 0) { Log.d(TAG, "NO FACE"); } else { Face face = list.get(0); Log.d(TAG, String.format("ANGER:%.2f\n", face.emotions.getAnger())); Log.d(TAG, String.format("DISGUST:%.2f\n", face.emotions.getDisgust())); Log.d(TAG, String.format("FEAR:%.2f\n", face.emotions.getFear())); Log.d(TAG, String.format("JOY:%.2f\n", face.emotions.getJoy())); Log.d(TAG, String.format("SADNESS:%.2f\n", face.emotions.getSadness())); Log.d(TAG, String.format("SURPRISE:%.2f\n", face.emotions.getSurprise())); } } Camera.PictureCallback mPictureCallback = new Camera.PictureCallback() { @Override public void onPictureTaken(byte[] data, Camera camera) { Bitmap bm = BitmapFactory.decodeByteArray(data, 0, data.length); Matrix matrix = new Matrix(); matrix.postRotate(270f); bm = Bitmap.createBitmap(bm, 0, 0, bm.getWidth(), bm.getHeight(), matrix, true); try { Frame f = new Frame.BitmapFrame(bm, Frame.COLOR_FORMAT.RGBA); //f.setTargetRotation(Frame.ROTATE.BY_90_CCW); pd.process(f); } catch (Exception e) { e.printStackTrace(); } // ByteArrayOutputStream bmpStream = new ByteArrayOutputStream(); // bm.compress(Bitmap.CompressFormat.JPEG, 50, bmpStream); // bm = BitmapFactory.decodeByteArray(bmpStream.toByteArray(), 0, bmpStream.size()); File mediaStorageDir = new File(Environment.getExternalStorageDirectory() + "/Android/data/" + getApplicationContext().getPackageName() + "/Files"); File mediaFile; String mImageName = "photo.jpg"; mediaFile = new File(mediaStorageDir.getPath() + File.separator + mImageName); if (!mediaStorageDir.exists()) { mediaStorageDir.mkdirs(); } try { FileOutputStream fos = new FileOutputStream(mediaFile); bm.compress(Bitmap.CompressFormat.PNG, 90, fos); fos.close(); } catch (Exception e) { Log.e(this.getClass().getSimpleName(), "onPictureTaken(): exception caught", e); } // photo.setImageBitmap(bm); // moment.setPhoto(bm); // mPreview.setVisibility(View.GONE); // resultContainer.setVisibility(View.VISIBLE); } }; }