Question

我的活动中有一个方法可以启动image_capture事件

    public static void takePhoto(boolean fullSize) {

    if(isIntentAvailable(mActivity.getApplicationContext(), MediaStore.ACTION_IMAGE_CAPTURE)){
        mActivity.startActivityForResult(new Intent(
                MediaStore.ACTION_IMAGE_CAPTURE), CAPTURE_IMAGE);
    }
    else{
        Toast.makeText(mActivity.getApplicationContext(), "Geen camera beschikbaar", Toast.LENGTH_SHORT).show();
    }
}

public static boolean isIntentAvailable(Context context, String action) {
    final PackageManager packageManager = context.getPackageManager();
    final Intent intent = new Intent(action);
    List<ResolveInfo> list =
            packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
    return list.size() > 0;
}

当用户拍照时，我想从照片中获取字节并广播这些字节。

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode != RESULT_CANCELED) {

        case CAPTURE_IMAGE:
                byte[] photoBytes = null;

                if (data != null) {
                    Bitmap b = (Bitmap) data.getExtras().get("data");
                    ByteArrayOutputStream stream = new ByteArrayOutputStream();
                    b.compress(Bitmap.CompressFormat.PNG, 100, stream);
                    photoBytes = stream.toByteArray();

                    Toast.makeText(getApplicationContext(), "Foto wordt geupload..", Toast.LENGTH_SHORT).show();
                    Log.d("ShowScreenActivity", Integer.toString(photoBytes.length));

                    // Send bytearray back to server
                    BroadcastSender.sendPicture(photoBytes);
                }
                else
                    Log.d("ShowScreenActivity", "Data in intent is empty");

            break;
        }
    }
}

一切正常，但图像也存储在设备的图库中我怎样才能防止这种情况或我做错了什么？

Answer 1

您的图片已保存到图库，因为这是默认行为。要覆盖它，您需要指定一个不同的目标文件夹来保存图像（在调用摄像头的意图中），并将.nomedia文件放在文件夹中

Answer 2

您是否将图片临时存储在BroadcastSender的sendPicture方法的目录中？

如果图像存储在MediaScanner索引的目录中，它将自动添加到图库中。

拍照而不保存图片到画廊？

2 个答案: