BufferedReader.readline（）的结果在Android中返回任何结果 [英] BufferedReader.readline() return nothing in result in android

问题描述

我的工作套接字编程在Android和试图从我的Andr​​oid应用程序读取服务器的反响。

有关这个我使用bufferreader.readline（），但它没有任何returen事情

我在机器人工作室Evalute前pression测试，它会在返回结果只是结果=

下面是我的code，我已经使用
 尝试
                {
                    如果（插座！= NULL）
                    {

  //Log.i(\"AsynkTask，readFromStream：读消息）;
                    //消息= dis.toString（）;                   / * InputStreamReader的isrdr =新的InputStreamReader（socket.getInputStream（））;
                    如果（isrdr.ready（））
                    {                    }
                    其他
                    {
                        消息=读者未准备好;
                    } * /
                    在的BufferedReader =新的BufferedReader（新的InputStreamReader（socket.getInputStream（）））;                        而（真）
                        {
                            //弦乐味精= in.readLine（）;
                            如果（in.readLine（）== NULL）{
                                消息=没有数据读取
                            }其他{
                                消息=数据可用;
                            }
                        }
                }
                其他
                {
                    消息=没有插座进行连接;
                    Log.i（AsynkTask，readFromStream：无法读取，关闭套接字）;
                }
            }
            赶上（例外五）
            {
                消息=的异常出现
                Log.i（AsynkTask，readFromStream：写入失败）;
            }
 

解决方案

ID检查您socket.getInputStream（）没有返回空

此外，您的，而绝不会逃跑，直到抛出一个异常，以便ID更改，要成为一段时间（in.readLine（）！= NULL）

修改

我会做到这一点。

 如果（socket.getInputStream（）== NULL）{
    //处理这个
}
其他{
     而（in.readLine（）！= NULL）{
            processString（）;
     }
}
 

}

我不知道为什么你的插槽为空，但我可以看不到它的任何初始化

i am working on socket programming in android and trying to read server responce from my android application .

For this i am using bufferreader.readline() but it is not returen any thing

I have tested it in android studio "Evalute Expression" , it will return just "result=" in result.

Here is my code which i have used try { if (socket != null) {

                    //Log.i("AsynkTask", "readFromStream : Reading message");
                    //message = dis.toString();

                   /*InputStreamReader isrdr=new InputStreamReader(socket.getInputStream());
                    if(isrdr.ready())
                    {

                    }
                    else
                    {
                        message="Reader Not Ready : ";
                    }*/
                    BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));

                        while (true)
                        {
                            //String msg = in.readLine();
                            if (in.readLine() == null) {
                                message = "No data read";
                            } else {
                                message = "data available";
                            }
                        }
                }
                else
                {
                    message="No Socket Connected";
                    Log.i("AsynkTask", "readFromStream : Cannot Read, Socket is closed");
                }
            }
            catch (Exception e)
            {
                message="Exception Occured";
                Log.i("AsynkTask", "readFromStream : Writing failed");
            }

解决方案

Id check that your socket.getInputStream() is not returning null

Also your while will never escape until an exception is thrown so id change that to be while (in.readLine() != null)

Edit

I would do this

if (socket.getInputStream() == null) {
    //deal with this 
}
else {
     while(in.readLine() != null) {
            processString();
     }
}

}

I have no idea why your socket is null but i can t see any initialisation for it

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