Android在读取相册图片的时候，报错如下：
08-06 12:13:14.044: ERROR/AndroidRuntime java.lang.RuntimeException: Unable to resume activity {com.ttl.ui/com.ttl.ui.ShowImgActivity}: android.database.StaleDataException: Attempted to access a cursor after it has been closed.08-06 12:13:14.044: E
