android : 从 Camera 捕获图像它得到一个 null

Question

我在 onActivityResult() 中收到 "photoFile" is null

单击捕获按钮时，我调用了一个方法 dispatchTakePictureIntent() 但是当我 return 返回时它得到空值。

当图像分辨率/尺寸非常大（如 4012*4012 等）时会出现此问题，特别是在 Android 6.0 版 +

上会出现此问题

这是我的代码

private void dispatchTakePictureIntent() {
    Intent takePictureIntent = new Intent(
            android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    // Ensure that there's a camera activity to handle the intent
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        // Create the File where the photo should go
        File photoFile = null;
        try {
            photoFile = Util.createImageFile();
            mCurrentPhotoPath = photoFile.getAbsolutePath();

            System.out.println( "photoFile:" + photoFile.getAbsolutePath());
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        // Continue only if the File was successfully created
        if (photoFile != null) {

            System.out.println("@@@@ photoFile: " + photoFile.getAbsolutePath());

            /*takePictureIntent.putExtra(MediaStore.EXTRA_SIZE_LIMIT,1024);
            takePictureIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
                    mCurrentPhotoPath);*/

            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                    Uri.fromFile(photoFile));

            startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);

        }
    }
}

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

    if (resultCode != RESULT_CANCELED) {
        if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
            try {
                //Bundle extras = data.getExtras();
                // Log.i(TAG, "extras: " + extras.get("data"));

                Bitmap mphoto = (Bitmap) data.getExtras().get("data");


                System.out.println( "***photoFile: " + data.getExtras().get("data"));

            } catch (Exception e) {
                // Log.i(TAG, "Exception:" + e.getMessage());
            }

            ShowPopupDialog(mCurrentPhotoPath);
        }

    }
}

请帮助我。提前致谢。

Answer 1

将您的 OnActivityResult 代码更改为：

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

        if (resultCode != RESULT_CANCELED) {
            if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
                try {    

                      File fil = new File(Environment.getExternalStorageDirectory().toString());
                            for (File temp : fil.listFiles()) {
                                if (temp.getName().equals("temp.jpg")) {
                                    fil = temp;
                                    break;
                                }
                            }
                            Bitmap bitmap = null;

                            BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
                            Bitmap bmp = BitmapFactory.decodeFile(fil.getAbsolutePath(),bitmapOptions);
    //
                            Log.e("edit", "new image path is " + fil.getAbsolutePath());
                 } catch (Exception e) {
                    // Log.i(TAG, "Exception:" + e.getMessage());
                }

                ShowPopupDialog(mCurrentPhotoPath);
            }

        }

android : 从 Camera 捕获图像它得到一个 null

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