Question

我有一些代码可以从相机中捕获图像并将图像保存在设备库中。在onActivityResults方法之后，我得到图像网址，我可以在设备上的图库中看到图像。但由于某种原因我不能称这个图像。我得到的网址字符串是/storage/emulated/0/Pictures/1493836160696.jpg。任何想法？

public void onClick(View v) {
    switch (v.getId()) {
        case R.id.cancel_btn:
            finish();
            break;
        case R.id.next_btn:

            break;
        case R.id.camera_btn:
            Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
                String fileName = "temp.jpg";
                ContentValues values = new ContentValues();
                values.put(MediaStore.Images.Media.TITLE, fileName);
                mCapturedImageURI = getContentResolver()
                        .insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                                values);
                takePictureIntent
                        .putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);
                startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
                break;
            }
    }
}

@Override
protected void onActivityResult(int requestCode, int resultCode,
                                          Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    switch (requestCode) {
        case REQUEST_IMAGE_CAPTURE:
            if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) {
                String[] projection = {MediaStore.Images.Media.DATA};
                Cursor cursor = managedQuery(mCapturedImageURI, projection, null, null, null);
                int column_index_data = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                cursor.moveToFirst();
                String picturePath = cursor.getString(column_index_data);


                Uri u = Uri.parse(picturePath);
                Log.d("path", String.valueOf(u));
                //ALBUM_ART_URI = Uri.parse(String.valueOf(picturePath));
                Picasso.with(AddNewDish.this).load(u).into(mImageView);

            }
    }
}

Answer 1

将case中的代码替换为：

    case REQUEST_IMAGE_CAPTURE:
        if (resultCode == RESULT_OK) {
            Picasso.with(AddNewDish.this).load(mCapturedImageURI).into(mImageView);
        }

此外，您需要确保在保存的实例状态mCapturedImageURI中保留Bundle，因为您的进程可能会在相机应用程序位于前台时终止。

请参阅this sample app了解如何使用ACTION_IMAGE_CAPTURE以及生成的Uri。

无法在imageview中显示捕获图像

1 个答案: