Socket 调用close方法偶尔会出空指针

Question

private void releaseLastSocket(WeakReference mSocket) {

    try {
        if (null != mSocket) {
            Socket sk = mSocket.get();
            if (!sk.isClosed()) {
                sk.close();
            }
            sk = null;
            mSocket = null;
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
}
 代码如下  求大神解答下 

Answer 1

try {
if (null != mSocket) {
Socket sk = mSocket.get();
if(socket == null) {
return;
}

        if (!sk.isClosed()) {
            sk.close();
        }
        sk = null;
        mSocket = null;
    }
} catch (IOException e) {
    e.printStackTrace();
}

}