android获得sd卡路径办法：
不建议直接写逝世android sd卡的路径。
public String getSDPath(){
File sdDir = null;
boolean sdCardExist = Environment.getExternalStorageState()
.equals(android.os.Environment.MEDIA_MOUNTED); //断定sd卡是不是存在
if (sdCardExist)
{
sdDir = Environment.getExternalStorageDirectory();//获得跟目录
}
return sdDir.toString();
}pub
