從輸入流獲取位圖並調整大小

Question

我想從輸入流獲取位圖，然後重新調整它的大小。但是我得到了錯誤。

如果我沒有重新調整大小，它會正常工作。

任何人都可以幫忙嗎？

logcat的：

01-07 01:38:33.412: D/skia(1307): --- SkImageDecoder::Factory returned null 

CODE：

private Bitmap getBitmap(String url) 
{ 
    try { 
     Bitmap bitmap=null; 
     URL imageUrl = new URL(url); 

     HttpURLConnection conn = (HttpURLConnection) imageUrl.openConnection(); 
     conn.setConnectTimeout(10000); 
     conn.setReadTimeout(10000); 
     conn.setDoInput(true); 
     conn.setInstanceFollowRedirects(true); 
     conn.connect(); 
     InputStream is=conn.getInputStream(); 

     //return BitmapFactory.decodeStream(is); // THIS WORKS FINE 
     bitmap = decodeFile(is); 
     is.close(); 
     return bitmap; 
    } catch (Exception ex){ 
     return null; 
    } 
} 

private Bitmap decodeFile(InputStream istream){ 
    BufferedInputStream is = new BufferedInputStream(istream); 
    try { 
     BitmapFactory.Options o = new BitmapFactory.Options(); 
     o.inJustDecodeBounds = true; 
     BitmapFactory.decodeStream(is,null,o); 

     final int REQUIRED_SIZE=60; 
     int height_tmp=o.outHeight; 
     int scale=1; 
     while(true){ 
      if(height_tmp/2<REQUIRED_SIZE) 
       break; 
      height_tmp/=2; 
      scale*=2; 
     } 

     BitmapFactory.Options o2 = new BitmapFactory.Options(); 
     o2.inSampleSize=scale; 
     Log.d("insample", "aa: "+scale); 
     return BitmapFactory.decodeStream(is, null, o2); 
    } catch (Exception e) { 
     Log.d("aaa","aa: "+e); 
    } finally{ 
     try { 
      is.close(); 
     } catch(IOException ignored) {} 
    } 
    return null; 
} 

Answer 1

在

iv.setImageResource(resId); 

渣油爲無效值...

它變化到

iv.setImageResource(R.drawable.ic_launcher); 

和測試代碼