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Android把svg圖片轉(zhuǎn)為jpg保存到相冊(cè)圖庫(kù)

更新時(shí)間：2017年05月22日 10:57:19 作者：HAndroidevelopcker

這篇文章主要為大家詳細(xì)介紹了Android把svg圖片轉(zhuǎn)為jpg保存到相冊(cè)圖庫(kù)，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

我上一篇文章寫了《Android加載html中的svg格式圖片進(jìn)行顯示〉,有興趣的同學(xué)可以去看看地址：Android加載html中svg格式圖片進(jìn)行顯示

但是我們一般在瀏覽圖片時(shí),還會(huì)有保存圖片到相冊(cè)或圖庫(kù)的操作,而Android手機(jī)自帶的相冊(cè)或圖庫(kù)是不支持查看svg格式的圖片的,所以我們需要把svg格式的圖片轉(zhuǎn)為jpg或png格式再進(jìn)行保存,我的例子是保存為jpg格式,png也是一樣的,我這里寫了個(gè)工具類,可以保存jpg,png格式的圖片,也可以把svg圖片轉(zhuǎn)為jpg進(jìn)行保存.接下來(lái)我貼下我的代碼:

public class FileUtils {
 public static void savePhoto(final Context context, final String url , final SaveResultCallback saveResultCallback) {
 new Thread(new Runnable() {


  @Override
  public void run() {
  File appDir = new File(Environment.getExternalStorageDirectory(), "out_photo");
  if (!appDir.exists()) {
   appDir.mkdir();
  }
  SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");//設(shè)置以當(dāng)前時(shí)間格式為圖片名稱
  String fileName = df.format(new Date()) + ".jpg";
  File file = new File(appDir, fileName);
  if (url.endsWith(".svg")){
   //拿到圖片在assets目錄下的相對(duì)路徑
   String replaceUrl = url.replace("file:///android_asset/", "");
   try {
   SVG svg = new SVGBuilder().readFromAsset(context.getAssets(), replaceUrl).build();
   //拿到svg圖片的drawable
   PictureDrawable drawable = svg.getDrawable();
   //圖片背景的畫筆
   Paint paint = new Paint();
   paint.setColor(Color.WHITE);
   //圖片線條的畫筆
   Paint paint1 = new Paint();
   paint1.setColor(Color.BLACK);
   //創(chuàng)建bitmap對(duì)象
   Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
   Canvas canvas = new Canvas(bitmap);
   canvas.drawRect(0,0,bitmap.getWidth()+50,bitmap.getHeight()+50,paint);
   drawable.setBounds(0,0,canvas.getWidth(),canvas.getHeight());
   drawable.draw(canvas);
   FileOutputStream fos = new FileOutputStream(file);
   //轉(zhuǎn)為jpg格式并寫入到sd卡
   bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
   fos.flush();
   fos.close();
   saveResultCallback.onSavedSuccess();
   } catch (IOException e) {
   e.printStackTrace();
   saveResultCallback.onSavedFailed();
   }
  }else {
  try {
   //保存jpg格式的圖片到相冊(cè)中
   FileOutputStream fos = new FileOutputStream(file);
   InputStream fis = context.getAssets().open(url.replace("file:///android_asset/",""));
   int len = 0;
   byte[] bytes = new byte[1024];
   while ((len = fis.read(bytes)) != -1){
   fos.write(bytes,0,len);
   }
   fos.flush();
   fis.close();
   fos.close();
   saveResultCallback.onSavedSuccess();
  } catch (FileNotFoundException e) {
   saveResultCallback.onSavedFailed();
   e.printStackTrace();
  } catch (IOException e) {
   saveResultCallback.onSavedFailed();
   e.printStackTrace();
  }
  }

  //保存圖片后發(fā)送廣播通知更新數(shù)據(jù)庫(kù)
  Uri uri = Uri.fromFile(file);
  context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, uri));
  }
 }).start();
 }

 public interface SaveResultCallback{
 void onSavedSuccess();
 void onSavedFailed();
 }

}

用到的第三方開源庫(kù):https://github.com/japgolly/svg-android

效果圖：