將位圖保存到android默認圖片目錄

Question

我使用下面的代碼將位圖圖像（從佈局捕獲）保存到android默認圖片目錄中。看起來保存的圖像已損壞，因爲Gallery無法打開它。

當我將位圖保存在另一個位置時，畫廊可以打開它。但是當我將它保存到android默認目錄時它不會打開。

public void saveToGallery() { 
     String path = Environment.getExternalStorageDirectory().toString() 
       + "/Pictures/Keshavarzi/" + "screenshot-" + System.currentTimeMillis() + ".png"; 

     ViewGroup v = (ViewGroup) findViewById(R.id.lyt_main_report_activity); 
     v.setDrawingCacheEnabled(true); 
     v.setDrawingCacheEnabled(true); 
     v.buildDrawingCache(); 
     Bitmap bitmap = Bitmap.createBitmap(v.getDrawingCache()); 
     v.setDrawingCacheEnabled(false); 



     OutputStream out = null; 
     File imageFile = new File(path); 

     try { 
      out = new FileOutputStream(imageFile); 
      bitmap.compress(Bitmap.CompressFormat.JPEG, 90, out); 
      out.flush(); 
     } catch (FileNotFoundException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } finally { 
      try { 
       if (out != null) { 
        out.close(); 
       } 

      } catch (Exception exc) { 
      } 

     } 


     ContentValues values = new ContentValues(); 
     values.put(MediaStore.Images.Media.TITLE, "Title"); 
     values.put(MediaStore.Images.Media.DESCRIPTION, "Description"); 
     values.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis()); 
     values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg"); 
     values.put(MediaStore.MediaColumns.DATA, path); 

     getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); 


     MHToast.showToast(getString(R.string.saved_in_gallery), Toast.LENGTH_LONG); 
    } 

Answer 1

試試這個，請檢查您的保存目錄的存在，或先創建目錄，然後保存位圖，

String path = Environment.getExternalStorageDirectory().toString() 
      + "/Pictures/Keshavarzi/" + "screenshot-" + 

System.currentTimeMillis() + ".png"; 
File imageFile = new File(path); 
if(!imageFile.getParentFile().exists()){ 
     imageFile.getParentFile().mkDirs(); 
}