如何在不压缩的情况下将相机输出的图像直接保存到文件中？

Question

文件压缩后发短信，再次压缩，非常卡顿

我用 Intent 调出相机。我得到结果并调出 Intent to send as text。

private void takePic() {
    Intent cameraIntent = new Intent(
            android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(cameraIntent, 2);
}

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == 2) {
        Bitmap photo = (Bitmap) data.getExtras().get("data");
        File file = writebitmaptofilefirst("route_image",photo);
        Uri uri = Uri.fromFile(file);
        fileToDelete = file;
        Intent sendIntent = new Intent(Intent.ACTION_SEND);
        sendIntent.putExtra("address", "8001111222");
        sendIntent.putExtra(Intent.EXTRA_STREAM, uri);
        sendIntent.setType("image/jpg");
        startActivityForResult(sendIntent,3);
    }
    else if (requestCode == 3){
        if (fileToDelete.exists()) fileToDelete.delete();
    }
}

public static File writebitmaptofilefirst(String filename, Bitmap source) {
    String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
    File mFolder = new File(extStorageDirectory + "/temp_images");
    if (!mFolder.exists()) {
        mFolder.mkdir();
    }
    OutputStream outStream = null;
    File file = new File(mFolder.getAbsolutePath(), filename + ".jpg");
    if (file.exists()) {
        file.delete();
        file = new File(extStorageDirectory, filename + ".jpg");
        Log.e("file exist", "" + file + ",Bitmap= " + filename);
    }
    try {
        outStream = new FileOutputStream(file);
        source.compress(Bitmap.CompressFormat.JPEG, 90, outStream);
        outStream.flush();
        outStream.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    Log.e("file", "" + file);
    return file;

}

这很好用，除了生成的文本图像不连贯。如果我发送最终出现在画廊中的相同图片，它会将其转换下来，结果在接收端会好 100 倍。我可以直接保存从相机调用中获取的位图而不压缩，发送图片后文件将被删除。用户实际拍摄照片，然后点击默认短信应用程序上的发送按钮。

Answer 1

而不是

source.compress(Bitmap.CompressFormat.JPEG, 90, outStream);

使用

source.compress(Bitmap.CompressFormat.PNG, 100, outStream);

JPEG 是一种有损格式，因此结果不稳定。

Answer 2

不压缩直接保存图片使用AndroidBmpUtil:

new AndroidBmpUtil().save(source, file);

如何在不压缩的情况下将相机输出的图像直接保存到文件中？

How can I save output image from camera directly to file without compression?

sms

camera

android