Question

我有使用相机意图的应用程序并保存拍摄到特定文件夹的图片。现在我缺少一个功能，那就是拍照后我应该添加纯文本（时间戳，图片下边缘/上边框上的更多信息）并保存。

如何实现这一目标？我的代码在

之下

public void takePicture( View view)
{
    Intent intentCamera = new Intent();
    intentCamera.setAction(MediaStore.ACTION_IMAGE_CAPTURE);

    File photofile = null;
    try{
        photofile=createImageFile();
        intentCamera.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photofile));
        startActivityForResult(intentCamera, ActivityStartamera);
        //Toast.makeText(this,Uri.fromFile(photofile).toString(), Toast.LENGTH_LONG).show();
    }
    catch (IOException e)
    {
        e.printStackTrace();
        Toast.makeText(this, "Error happened", Toast.LENGTH_LONG).show();
        imageFileName="";
    }
}

protected  void onActivityResult (int requestCode, int resultCode, Intent data)
{
    if(requestCode == ActivityStartamera && resultCode == RESULT_OK)
    {
        //
        //here i should add plain text to taken picture
        //
        Toast.makeText(this, "Picture taken", Toast.LENGTH_LONG).show();
    }
    else{
        image.delete();
    }
}

File createImageFile () throws IOException{
    String timeStamp = new SimpleDateFormat("MMyyyydd_HHmmss").format(new Date());
    imageFileName = "picture_"+timeStamp;

    storage = Environment.getExternalStoragePublicDirectory("PicturesForApp");
    if (!storage.exists())
    {
        Toast.makeText(this, "Folder made for pictures", Toast.LENGTH_LONG).show();
        storage.mkdirs();
    }
    image = new File(storage + "/" +imageFileName +".jpg");
    return image;
}

我尝试过像this这样的东西但是没有用。

Answer 1

请使用此方法我相信它会对您有所帮助。

 public Bitmap addTextToImage(Bitmap src, String textToAddOnImage, int x, int y, int color, int alpha, int size, boolean underline) {
    int w = src.getWidth();
    int h = src.getHeight();
    Bitmap result = Bitmap.createBitmap(w, h, src.getConfig());

    Canvas canvas = new Canvas(result);
    canvas.drawBitmap(src, 0, 0, null);

    Paint paint = new Paint();
    paint.setColor(color);
    paint.setAlpha(alpha);
    paint.setTextSize(size);
    paint.setAntiAlias(true);
    paint.setUnderlineText(underline);
    canvas.drawText(textToAddOnImage, x, y, paint);

    return result;
}

像这样调用此方法

// use this bitmap to show in imageView and you can also save the bitmap.

Bitmap bmp = addTextToImage(srcBitmap, "Mustanser Iqbal", 200, 200, Color.GREEN, 80, 24, false);

File f = new File(mediaStorageDir.getPath() + File.separator + "IMG_" + fileName + ".png");
FileOutputStream fos = new FileOutputStream(f);
bmp.compress(Bitmap.CompressFormat.PNG, 90, fos);

将纯文本添加到从相机意图中拍摄的照片

1 个答案: