生成的png图片打不开

[xxnan]

File file=new File(Environment.getExternalStorageDirectory(),name);

if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
{
try {
FileOutputStream fout=new FileOutputStream(file);
fout.close();
getBitmap(AndroidPicActivity.this).compress(Bitmap.CompressFormat.PNG, 100, fout);
} catch ( IOException e) {
Toast.makeText(AndroidPicActivity.this, "save filed", Toast.LENGTH_SHORT).show();
}
}

这里生成的png图片打不开，求指导，在线等。。。。