我写了一个代码来了解金钱的价值。我正在使用 Mobile Vision 的 OCR 来获取数字和单词，然后如果匹配（我设置了一些条件），应用程序将播放该值的声音。现在我想做一些实验。我希望这个应用程序裁剪数字周围的区域并将其显示在我的活动中。这就是我所做的。
public class MainActivity extends AppCompatActivity {
SurfaceView cameraView;
TextView textView;
CameraSource cameraSource;
final int RequestCameraPermissionID = 1001;
String nominal = "";
String bilangan = "";
TextToSpeech tts;
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case RequestCameraPermissionID: {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
return;
}
try {
cameraSource.start(cameraView.getHolder());
} catch (IOException e) {
e.printStackTrace();
}
}
}
break;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
cameraView = (SurfaceView) findViewById(R.id.surface_view);
textView = (TextView) findViewById(R.id.text_view);
tts=new TextToSpeech(MainActivity.this, new TextToSpeech.OnInitListener() {
@Override
public void onInit(int status) {
// TODO Auto-generated method stub
if(status == TextToSpeech.SUCCESS){
int result=tts.setLanguage(Locale.US);
if(result==TextToSpeech.LANG_MISSING_DATA ||
result==TextToSpeech.LANG_NOT_SUPPORTED){
Log.e("error", "This Language is not supported");
}
else{
ConvertTextToSpeech();
}
}
else
Log.e("error", "Initilization Failed!");
}
});
TextRecognizer textRecognizer = new TextRecognizer.Builder(getApplicationContext()).build();
if (!textRecognizer.isOperational()) {
Log.w("MainActivity", "Detector dependencies are not yet available");
} else {
cameraSource = new CameraSource.Builder(getApplicationContext(), textRecognizer)
.setFacing(CameraSource.CAMERA_FACING_BACK)
.setRequestedPreviewSize(1280, 1024)
.setRequestedFps(2.0f)
.setAutoFocusEnabled(true)
.build();
cameraView.getHolder().addCallback(new SurfaceHolder.Callback() {
@Override
public void surfaceCreated(SurfaceHolder surfaceHolder) {
try {
if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(MainActivity.this,
new String[]{Manifest.permission.CAMERA},
RequestCameraPermissionID);
return;
}
cameraSource.start(cameraView.getHolder());
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
}
@Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
cameraSource.stop();
}
});
textRecognizer.setProcessor(new Detector.Processor<TextBlock>() {
@Override
public void release() {
}
@Override
public void receiveDetections(Detector.Detections<TextBlock> detections) {
final SparseArray<TextBlock> items = detections.getDetectedItems();
if(items.size() != 0)
{
textView.post(new Runnable() {
@Override
public void run() {
StringBuilder stringBuilder = new StringBuilder();
for(int i =0;i<items.size();++i)
{
TextBlock item = items.valueAt(i);
/*stringBuilder.append(item.getValue());
stringBuilder.append("\n");*/
if (item.getValue().toLowerCase().contains("seribu")){
bilangan = "seribu rupiah";
}
else if(item.getValue().toLowerCase().contains("dua ribu")){
bilangan = "dua ribu rupiah";
}
else if(item.getValue().toLowerCase().contains("lima ribu")){
bilangan = "lima ribu rupiah";
}
else if(item.getValue().toLowerCase().contains("sepuluh ribu")){
bilangan = "sepuluh ribu rupiah";
}
else if(item.getValue().toLowerCase().contains("dua puluh ribu")){
bilangan = "dua puluh ribu rupiah";
}
else if(item.getValue().toLowerCase().contains("lima puluh ribu")){
bilangan = "lima puluh ribu rupiah";
}
else if(item.getValue().toLowerCase().contains("seratus ribu")){
bilangan = "seratus ribu rupiah";
}
if(item.getValue().equals("1000")){
nominal = "1000";
}
else if(item.getValue().equals("2000")){
}
else if(item.getValue().equals("5000")){
nominal = "5000";
}
else if(item.getValue().equals("10000")){
nominal = "10000";
}
else if(item.getValue().equals("20000")){
nominal = "20000";
}
else if(item.getValue().equals("50000")){
nominal = "50000";
}
else if(item.getValue().equals("100000")){
nominal = "100000";
}
stringBuilder.append(bilangan);
stringBuilder.append(nominal);
}
//textView.setText(stringBuilder.toString());
if (!bilangan.equals("") && !nominal.equals("")){
cameraSource.stop();
ConvertTextToSpeech();
}
}
});
}
}
});
}
}
private void ConvertTextToSpeech() {
tts.speak(bilangan,TextToSpeech.QUEUE_FLUSH,null,"Niel");
}
}
只是如何像下面这张图片一样裁剪数字（红色框），然后我将使用 ImageView 在我的活动中显示它。
谢谢