Android:拍照，然后立即进行裁剪而无需从图库中选择

Question

我有完整的工作代码来拍照、裁剪、发送带有图像附件的电子邮件。

代码流程如下:拍张照片 > 找到并选择我们刚刚从图库中拍摄的照片> 裁剪它 > 通过电子邮件发送附件。

我想了解如何跳过整个“查找并选择我们刚刚从画廊拍摄的照片”部分，并在拍完照片后立即直接进行裁剪。 p>

是否有一个 Intent 可以满足我的要求？

我试过这个教程，但它仍然会让用户进入画廊并寻找他们刚刚拍摄的照片 http://www.londatiga.net/featured-articles/how-to-select-and-crop-image-on-android/

编辑 我还应该提到我在拍照时有一个自定义 View ，所以我不确定我是否可以使用 Intent MediaStore.ACTION_IMAGE_CAPTURE

这是执行裁剪的代码，还可以让您通过查看图库来选择刚刚拍摄的图像。

        Intent crop_pic = new Intent(Intent.ACTION_PICK, uriTarget); // used to be ACTION_GET_CONTENT /ACTION_PICK
           crop_pic.putExtra("crop", "true");                           // this enables crop feature                                                        
           //crop_pic.putExtra("aspectX", 200);                         // this defines the aspect ration
           //crop_pic.putExtra("aspectY", 150);                     
           //crop_pic.putExtra("outputX", 500);                         // this defines the output bitmap size
           //crop_pic.putExtra("outputY", 500);     
           //crop_pic.putExtra("scale", true);
  try {    crop_pic.putExtra("return-data", false);                     // true to return a Bitmap, false to directly save the cropped iamge                            
           crop_pic.putExtra(MediaStore.EXTRA_OUTPUT, uriTarget);       // save output image in uri     
           //crop_pic.setDataAndType(uriTarget, "image/*");             // this will open all images in the Galery
           startActivityForResult(crop_pic, EMAIL_PIC);
           overridePendingTransition(R.anim.fadein, R.anim.fadeout);    
         } 
  catch    (ActivityNotFoundException e) {
           toast.showToastDialog(getApplicationContext(), e.toString());    
         }   
  LOGCAT.DEBUG(TAG, "Cropping Picture");

  }

如果我为它提供一个 uri 目标，是否有一个我不知道的 Intent 可以开始裁剪？

完整代码如下:

 public class DigitalSignature extends Activity implements SurfaceHolder.Callback{

            Camera    camera;
     SurfaceHolder    surfaceHolder;
           boolean    previewing = false;

               Uri    uriTarget;
          String[]    recipients = new String[]{"test@gmail.com", "",}; 
         final int    CROP_PIC = 1, EMAIL_PIC = 2, RETURN_ACTIVITY = 3, FINISH = 4, INDEX_GALLERY = 5;  

     final  String    TAG = "Digital Signature";

     ToastBuilder     toast = new ToastBuilder(this);
     ProjectDebug     LOGCAT = new ProjectDebug();  
 ProgressDialogManager    pDialog = new ProgressDialogManager();




@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

                DigitalSignature.this.requestWindowFeature(Window.FEATURE_NO_TITLE);         
                DigitalSignature.this.setContentView(R.layout.digitalsignature);
                DigitalSignature.this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);   

                DigitalSignature.this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);            
                DigitalSignature.this.getWindow().setFormat(PixelFormat.TRANSLUCENT); // Used to be TRANSPARENT



                SurfaceView     surfaceView = (SurfaceView)findViewById(R.id.camerapreview);
                                surfaceHolder = surfaceView.getHolder();
                                surfaceHolder.addCallback(DigitalSignature.this);
                                surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

                LayoutInflater  controlInflater = LayoutInflater.from(getApplicationContext());
                View            viewControl = controlInflater.inflate(R.layout.control, null);
                LayoutParams    layoutParamsControl = new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);

                DigitalSignature.this.addContentView(viewControl, layoutParamsControl); // Applying Filters and Parameters


                TextView        alignsig = (TextView)findViewById(R.id.alignsig);
                                alignsig.setText("Please take picture of the signature for" + "\n" + "Job Number " + DIGIJOB);

                Button          buttonTakePicture = (Button)findViewById(R.id.takepicture);
                                buttonTakePicture.setOnClickListener(new Button.OnClickListener(){



        @Override
        public void onClick(View arg0) {    
            LOGCAT.DEBUG(TAG, "Taking Picture");


                    // Sets camera monochrome filter ( Black and Whiite )
                    Camera.Parameters parameters = camera.getParameters();        
                    parameters.setColorEffect(android.hardware.Camera.Parameters.EFFECT_MONO);
                    camera.setParameters(parameters);        
                    camera.startPreview(); 


                    // Initiate Camera Focus
                    camera.autoFocus(mAutoFocusCallback);

                    // Creates Directory to save image in gallery
                    uriTarget = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, new ContentValues());   

                    //Notify the MediaScanner that a new file has been added and should be indexed so it shows up in the MediaStore.
                    Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
                    intent.setData(uriTarget);
                    sendBroadcast(intent);

                    }
             });
        }






Camera.AutoFocusCallback mAutoFocusCallback = new Camera.AutoFocusCallback() {

    @Override
    public void onAutoFocus(boolean success, Camera camera) {

        camera.takePicture(myShutterCallback, myPictureCallback_RAW, myPictureCallback_JPG);
    }
    };


ShutterCallback myShutterCallback = new ShutterCallback(){

    @Override
    public void onShutter() {

    }};


PictureCallback myPictureCallback_RAW = new PictureCallback(){

    @Override
    public void onPictureTaken(byte[] arg0, Camera arg1) {

    }};


PictureCallback myPictureCallback_JPG = new PictureCallback(){

    @Override
    public void onPictureTaken(byte[] arg0, Camera arg1) {
        //bmp = BitmapFactory.decodeByteArray(arg0, 0, arg0.length);    

        cropPic();

   OutputStream imageFileOS;
        try {   
                imageFileOS = getContentResolver().openOutputStream(uriTarget); 
                imageFileOS.write(arg0);
                imageFileOS.flush();
                imageFileOS.close();

                toast.showToastDialog(getApplicationContext(), "Image saved: " + uriTarget.toString());                             
            } 


      catch     (IOException e) {
                toast.showToastDialog(getApplicationContext(), e.toString());   
            }       

            // camera.startPreview(); // No need to start preview, we are saving
            }};                       // picture and no longer initiating camera






   protected void onActivityResult(int requestCode, int resultCode, Intent data) {

     switch     (requestCode) {

        case      CROP_PIC:
                    cropPic();
                    LOGCAT.DEBUG(TAG, "cropPic Case");      
       break;


        case      EMAIL_PIC:
                    emailPic();
                    LOGCAT.DEBUG(TAG, "emailPic Case");         
        break;                                                                  


        case      RETURN_ACTIVITY:  
                    returnActivity();
                    LOGCAT.DEBUG(TAG, "returnActivity Case");           
        break; 
            }       
    }



  private void cropPic() {  


    Intent crop_pic = new Intent(Intent.ACTION_PICK, uriTarget); // used to be ACTION_GET_CONTENT /ACTION_PICK
           crop_pic.putExtra("crop", "true");                           // this enables crop feature                                                        
           //crop_pic.putExtra("aspectX", 200);                         // this defines the aspect ration
           //crop_pic.putExtra("aspectY", 150);                     
           //crop_pic.putExtra("outputX", 500);                         // this defines the output bitmap size
           //crop_pic.putExtra("outputY", 500);     
           //crop_pic.putExtra("scale", true);
  try {    crop_pic.putExtra("return-data", false);                     // true to return a Bitmap, false to directly save the cropped iamge                            
           crop_pic.putExtra(MediaStore.EXTRA_OUTPUT, uriTarget);       // save output image in uri     
           //crop_pic.setDataAndType(uriTarget, "image/*");             // this will open all images in the Galery
           startActivityForResult(crop_pic, EMAIL_PIC);
           overridePendingTransition(R.anim.fadein, R.anim.fadeout);    
         } 
  catch    (ActivityNotFoundException e) {
           toast.showToastDialog(getApplicationContext(), e.toString());    
         }   
  LOGCAT.DEBUG(TAG, "Cropping Picture");

  }



  private void emailPic(){

     // new email_pic().execute();     

        GMailSender m = new GMailSender("username@gmail.com", "testtest");

        String[] toArr = { "sendingto@gmail.com" };
        m.setTo(toArr);
        m.setFrom("sendingto@gmail.com");
        m.setSubject("This is an email sent using my Mail JavaMail wrapper from an Android device.");
        m.setBody("Email body.");

        try { 
          m.addAttachment(getRealPathFromURI(uriTarget)); 

          if(m.send()) { 
            Toast.makeText(DigitalSignature.this, "Email was sent successfully.", Toast.LENGTH_LONG).show(); 
          } else { 
            Toast.makeText(DigitalSignature.this, "Email was not sent.", Toast.LENGTH_LONG).show(); 
          } 

        } catch(Exception e) {
          //Toast.makeText(MailApp.this, "There was a problem sending the email.", Toast.LENGTH_LONG).show(); 
          Log.e("MailApp", "Could not send email", e); 
        } 


      // OLD METHOD OF SENDING EMAIL
    /*  Intent email_pic = new Intent(Intent.ACTION_SEND);      // Commence choose photo action         
        email_pic.putExtra(Intent.EXTRA_EMAIL, recipients);     // Inserts Digital Signature address automatically in recipient
        email_pic.putExtra(Intent.EXTRA_SUBJECT, DIGIJOB);      // Inserts Track Number automatically in subject
        email_pic.putExtra(Intent.EXTRA_STREAM, uriTarget);     // Attaches image to Gmail
        email_pic.setType("image/jpeg");                        // Converts image to jpeg
        startActivityForResult(email_pic, RETURN_ACTIVITY); 
        overridePendingTransition(R.anim.fadein, R.anim.fadeout);   */
        JOB = "job";                                            // Reset job variable from track no (1736) to "job" so                                                                          
        LOGCAT.DEBUG(TAG, "Emailing Picture");                      // when you go back into Jobs Activity, it can parse data.

      returnActivity();

  }






  private void returnActivity() {
      Intent email_pic = new Intent(DigitalSignature.this, AgentPortalActivity.class);
      startActivityForResult(email_pic, FINISH);
      overridePendingTransition(R.anim.fadein, R.anim.fadeout);      
      LOGCAT.DEBUG(TAG, "Returning Activity");
  }





  private String getRealPathFromURI(Uri uriTarget) {

                String[] projection = { MediaStore.Images.Media.DATA };
                @SuppressWarnings("deprecation")
                Cursor cursor = managedQuery(uriTarget, projection, null, null, null);
                int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                                    cursor.moveToFirst();     

            LOGCAT.DEBUG("getRealPathFromURI", cursor.getString(column_index));
            return cursor.getString(column_index);

}



@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
        int height) {


    if    (previewing){
              camera.stopPreview();
              previewing = false;
          }

    if    (camera != null){

    try { camera.setPreviewDisplay(surfaceHolder);
          camera.startPreview();
          previewing = true;
          } 

    catch (IOException e) {
            toast.showToastDialog(getApplicationContext(), e.toString());   
          }
      }
  }




@Override
public void surfaceCreated(SurfaceHolder holder) {

    camera = Camera.open(); 
    //camera = Camera.open(0);  

    }




@Override
public void surfaceDestroyed(SurfaceHolder holder) {

    camera.stopPreview();
    camera.release();
    camera = null;
    previewing = false;
}
 }

Answer 1

您只需要使用 MediaStore.ACTION_IMAGE_CAPTURE Intent 操作。这将启动相机。在您的 onActivityResult 中，您可以获得刚刚拍摄的图像。现在您可以裁剪并发送它以及您想要的任何其他内容。下面是一个例子。

Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File pics = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
File cameraPhotoFile = new File(pics, System.currentTimeMillis()+".jpg");
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(cameraPhotoFile));
startActivityForResult(cameraIntent, REQUEST_CODE_CAMERA);


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode != Activity.RESULT_OK) return;
    if (requestCode == REQUEST_CODE_CAMERA) {
        MediaScannerConnection.scanFile(this,
                new String[]{cameraPhotoFile.getAbsolutePath()}, null, null);

// do something with the image located at cameraPhotoFile

我已经包含了 MediaScannerConnection，因为图像在扫描之前不会显示在图库中。如果你愿意，你可以删除它，但我喜欢拍摄的图像显示出来。位图现在位于“cameraPhotoFile”中。随心所欲地使用该文件。

另外，这里是来自谷歌的关于这个叫做 Taking Photos Simply 的文档。 .这很简单