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String path="";
Boolean isSDPresent = android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);
if(isSDPresent)
{
path = Environment.getExternalStorageDirectory().getAbsolutePath();//IndexPage.getExternalCacheDir().getAbsolutePath() + "/GrammarFolder";
}
else
{
path = theAct.getFilesDir() + "/GrammarFolder"; //没有SDCard的手机这个路径怎么写?
}