如何在片段中从相机捕获图像，

Posted 2023-04-17

【中文标题】如何在片段中从相机捕获图像，

【英文标题】：how to capture image from camera, in fragment,

【发布时间】：2014-01-05 09:38:29

【问题描述】：

我是 android 新手，我进行了大量培训，但图像无法从相机加载。以下是我从相机或图库中捕获图像的代码：

    public void showDiloag()
    Dialog dialog = new Dialog(getActivity());
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    builder.setTitle("Choose Image Source");
    builder.setItems(new CharSequence[]  "Gallery", "Camera" ,
            new DialogInterface.OnClickListener() 

                @Override
                public void onClick(DialogInterface dialog,
                        int which) 
                    switch (which) 
                    case 0:
                        Intent intent = new Intent(
                                Intent.ACTION_GET_CONTENT);
                        intent.setType("image/*");

                        Intent chooser = Intent
                                .createChooser(
                                        intent,
                                        "Choose a Picture");
                        getAcitivity.startActivityForResult(
                                chooser,
                                ACTION_REQUEST_GALLERY);

                        break;

                    case 1:
                        Intent cameraIntent = new Intent(
                                android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                        startActivityForResult(
                                cameraIntent,
                                ACTION_REQUEST_CAMERA);

                        break;

                    default:
                        break;
                    
                
            );

    builder.show();
    dialog.dismiss();

为了展示那张照片：

      @Override
public void onActivityResult(int requestCode, int resultCode, Intent data) 
    super.onActivityResult(requestCode, resultCode, data);
    System.out.println("OnActivityResult");
    if (resultCode == getActivity().RESULT_OK) 
        if (requestCode == Utils.ACTION_REQUEST_GALLERY) 
            // System.out.println("select file from gallery ");
            Uri selectedImageUri = data.getData();
            String tempPath = JuiceAppUtility.getPath(
                    selectedImageUri, getActivity());

            Bitmap bm = JuiceAppUtility
                    .decodeFileFromPath(tempPath);
            imgJuice.setImageBitmap(bm);
         else if (requestCode == Utils.ACTION_REQUEST_CAMERA) 
            Bitmap photo = (Bitmap) data.getExtras()
                    .get("data");
            imgJuice.setImageBitmap(photo);
        
    

另外，图像是从相机拍摄的并从图库中选择，但不会加载到ImageView。有人可以帮帮我吗？

【问题讨论】：

你能给我 JuiceAppUtility.getPath() 函数吗？

【参考方案1】：

是的，我发现了你的问题

只需删除下面的行和

           getAcitivity.startActivityForResult(
                            chooser,
                            ACTION_REQUEST_GALLERY);

并在下面写下代码

            startActivityForResult(
                            chooser,
                            ACTION_REQUEST_GALLERY);

只需删除 getActivity

【讨论】：

@user2107365 将此标记为已接受的答案，以便其他人知道此问题已解决

【参考方案2】：

片段面

btnimage.setOnClickListener(new View.OnClickListener() 
            @Override
            public void onClick(View v) 
                showPictureDialog();
            
        );

private void showPictureDialog()android.app.AlertDialog.Builder pictureDialog = new android.app.AlertDialog.Builder(getActivity());
        pictureDialog.setTitle("Select Action");
        String[] pictureDialogItems = 
                "Select photo from gallery",
                "Capture photo from camera";
        pictureDialog.setItems(pictureDialogItems,
                new DialogInterface.OnClickListener() 
                    @Override
                    public void onClick(DialogInterface dialog, int which) 
                        switch (which) 
                            case 0:
//                    choosePhotoFromGallary();
                                choosePhotoFromGallary();
                                break;
                            case 1:
//                    takePhotoFromCamera();
                                takePhotoFromCamera();
                                break;
                        
                    
                );

        pictureDialog.show();
    

private void takePhotoFromCamera() 
        Uri resultUri;
        Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        resultUri = getActivity().getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                new ContentValues());
        intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, resultUri);
        if (intent.resolveActivity(getActivity().getPackageManager()) != null) 
            startActivityForResult(intent, 22);
        
    
    public void choosePhotoFromGallary() 
        Intent galleryIntent = new Intent(Intent.ACTION_PICK,
                android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

        startActivityForResult(galleryIntent, 11);
    

    @Override
    public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) 
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == getActivity().RESULT_OK)
        
            if (requestCode == 11) 
                if (data != null) 
                    Uri contentURI = data.getData();
                    try 
                        Bitmap bitmap = MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), contentURI);
                        //                    String path = saveImage(bitmap);
                        //                    Toast.makeText(getActivity(), "Image Saved!", Toast.LENGTH_SHORT).show();
                        iv_froncnic.setImageBitmap(bitmap);

                     catch (IOException e) 
                        e.printStackTrace();
                        Toast.makeText(getActivity(), "Failed!", Toast.LENGTH_SHORT).show();
                    
                
                
                    Toast.makeText(getActivity(), "Data not found", Toast.LENGTH_SHORT).show();
                

            
    

    

在父活动中

  @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) 
        if (resultCode==this.RESULT_OK)
        super.onActivityResult(requestCode, resultCode, data);
        setResult(RESULT_OK, data);