我绝对坚持下面的活动，我试图制作一个相机图片，将其保存，然后将其发送到Google Vision API，以便对其进行进一步处理。
使图像正常工作，将其保存到图库中； API请求也可以正常工作，因为我没有收到任何错误消息。但是，包含“图像分析”的Toast只是没有显示，我绝对不知道为什么。我非常确定，API请求不会失败，因为我在Logcat中可以看到诸如“ 400”之类的响应。但是，现在它根本不只是响应。
我尝试制作图片，将其保存到设备中，打开它，并将其作为Inputstream传递给Google Vision API。
任何提示或帮助将不胜感激，在此先感谢您！
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.StrictMode;
import android.provider.MediaStore;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v4.content.FileProvider;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;
import com.google.api.client.extensions.android.json.AndroidJsonFactory;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.services.vision.v1.Vision;
import com.google.api.services.vision.v1.VisionRequestInitializer;
import com.google.api.services.vision.v1.model.AnnotateImageRequest;
import com.google.api.services.vision.v1.model.BatchAnnotateImagesRequest;
import com.google.api.services.vision.v1.model.BatchAnnotateImagesResponse;
import com.google.api.services.vision.v1.model.FaceAnnotation;
import com.google.api.services.vision.v1.model.Feature;
import com.google.api.services.vision.v1.model.Image;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
public class VisionAPIActivity extends AppCompatActivity {
ImageView imageView2;
ImageView imageView1;
static final int REQUEST_TAKE_PHOTO = 1;
String currentPhotoPath;
final Uri photoURI = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_vision_api);
Toolbar toolbar = findViewById(R.id.toolbar);
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
setSupportActionBar(toolbar);
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
}
public void imageClick(View view) throws FileNotFoundException {
imageView2 = findViewById(R.id.imageView2);
open();
}
public void open() throws FileNotFoundException {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File
Toast.makeText(this,
"Photo file can't be created, please try again",
Toast.LENGTH_SHORT).show();
}
// Continue only if the File was successfully created
if (photoFile != null) {
final Uri photoURI = FileProvider.getUriForFile(this,
"xxx.xxxx.xxxx.provider",
photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
Toast.makeText(this,
"Photo URI has been created",
Toast.LENGTH_SHORT).show();
// run();
}
Vision.Builder visionBuilder = new Vision.Builder(
new NetHttpTransport(),
new AndroidJsonFactory(),
null);
visionBuilder.setVisionRequestInitializer(
new VisionRequestInitializer("xxx"));
final Vision vision = visionBuilder.build();
Log.i("log-", "passed VisionBuilder Initialisation");
// TODO:
// Convert photo to byte array
ImageView mImageView;
mImageView = findViewById(R.id.imageView1);
InputStream ims = getContentResolver().openInputStream(Uri.fromFile(photoFile));
// just display image in imageview
mImageView.setImageBitmap(BitmapFactory.decodeStream(ims));
byte[] photoData = new byte[0];
Log.i("log-", "Content of Photo Data" + photoData);
Image inputImage = new Image();
inputImage.encodeContent(photoData);
Feature desiredFeature = new Feature();
desiredFeature.setType("FACE_DETECTION");
AnnotateImageRequest request = new AnnotateImageRequest();
request.setImage(inputImage);
Log.i("log-", "Content of inputImage" + inputImage);
request.setFeatures(Arrays.asList(desiredFeature));
BatchAnnotateImagesRequest batchRequest =
new BatchAnnotateImagesRequest();
batchRequest.setRequests(Arrays.asList(request));
BatchAnnotateImagesResponse batchResponse =
null;
try {
batchResponse = vision.images().annotate(batchRequest).execute();
List<FaceAnnotation> faces = batchResponse.getResponses()
.get(0).getFaceAnnotations();
// Count faces
int numberOfFaces = faces.size();
Log.i("log-", "number Of Faces" + numberOfFaces);
// Get joy likelihood for each face
String likelihoods = "";
for (int i = 0; i < numberOfFaces; i++) {
likelihoods += "\n It is " +
faces.get(i).getJoyLikelihood() +
" that face " + i + " is happy";
}
// Concatenate everything
final String message =
"This photo has " + numberOfFaces + " faces" + likelihoods;
// Display toast on UI thread
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(),
message, Toast.LENGTH_LONG).show();
}
});
}
catch (IOException e) {
e.printStackTrace();
}
}
return;
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
currentPhotoPath = image.getAbsolutePath();
return image;
}
protected void onActivityResult(int requestCode,int resultCode,Intent data){
super.onActivityResult(requestCode,resultCode,data);
Bitmap bitmap=(Bitmap)data.getExtras().get("data");
// imageView2.setImageBitmap(bitmap);
}
}