2016-05-26 42 views
0

我有一個圖像,我從數據庫拉,當我嘗試打印出我的收據打印機黑色。我認爲它與壓縮有關,但無法弄清楚如何在Java中添加這個im初學者。謝謝爪哇png出來黑

String imagex = "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"; 

    public Bitmap StringToBitMap(String encodedString){ 
    try { 
     byte [] encodeByte=Base64.decode(encodedString, Base64.DEFAULT); 
     Bitmap bitmap=BitmapFactory.decodeByteArray(encodeByte, 0, encodeByte.length); 
     return bitmap; 
    } catch(Exception e) { 
     e.getMessage(); 
     return null; 
    } 
} 
    Bitmap bm = StringToBitMap(imagex); 
    StarBitmap starbitmap = new StarBitmap(bm, true, 200); 
    commands.add(starbitmap.getImageEscPosDataForPrinting(false,true)); 
+0

什麼'Bitmap'和'StarBitmap'類?你的'imagex'字符串是base-64編碼的。這是它[看起來像](http://postimg.org/image/898rrp1t7/f1aa33b5/)。 –

+0

對於星形微米級打印機,我認爲這並不重要,如果我可以製作正確的格式,它應該在打印機上正確顯示。添加了轉換base64的功能 – user1054513

+0

另外我可以在其中放置一個bmp,並打印它的正好png圖像。也許我只是需要將其轉換爲bmp – user1054513

回答

1

在大多數情況下,由於PC的渲染問題(而不是服務器端錯誤)導致PNG是黑色(透明區域)。由於PNG的顏色深度較低(PNG-8等),有時候PNG呈現反轉顏色。 我在很多時候都經歷過高質量的PNG也在許多瀏覽器中以陰暗的顏色和邊緣(PNG-24)顯示。 解決方案PNG錯誤:

  • 與不同的圖像格式(JPEG,GIF等)
  • 更好地重新格式化用圖像編輯工具(Photoshop是最好的)的圖像不同的圖像嘗試和圖像導出爲一個PNG然後存儲在數據庫中。
  • 嘗試顯示出同樣的投入不同的環境(瀏覽器或其它PC)
+1

我結束了從PHP的圖像轉換爲PNG的圖像看看丹尼爾德萊昂回答http://stackoverflow.com/questions/1201798/use-php-to-convert-png-to-jpg-with-compression – user1054513