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基本上......

我正在尝试通过 TCP/IP 连接连接到设备。

我有一个 TextEdit 字段来输入设备的 IP 地址，然后单击按钮通过意图将 IP 地址发送到另一个类。然后使用 IP 地址和固定端口 32 连接到设备。

连接本身不需要任何身份验证，但一旦连接，设备就会要求输入用户名和密码（在这种情况下，它们都是 root）。

所以一旦连接我需要自动发送“root”等待响应，再次发送“root”，当“SNX_COM>”的响应（这是我登录时得到的）等待进一步的命令。

进一步的命令将来自按钮点击。

我遇到的问题是，当我输入我的 IP 地址并按连接时，应用程序只是强制关闭。

请帮忙........

我的 IP 条目页面 (XML)

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".IPEntry" >

<EditText
    android:id="@+id/editText1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="79dp"
    android:ems="10"
    android:ellipsize="start"
    android:gravity="center_horizontal"
    android:hint="@string/enterip" />

<Button
    android:id="@+id/connect"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/editText1"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="14dp"
    android:text="@string/ipconbut" />

<ProgressBar
    android:id="@+id/progressBar1"
    style="?android:attr/progressBarStyleLarge"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/connect"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="21dp" />

</RelativeLayout>

我的 IP 条目页面（Java 类）

package com.smarte.smartipcontrol;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;

public class IPEntry extends Activity {
public final static String ACTUALSMARTIP = "com.smarte.smartipcontrol.ACTU_IP";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.act_ipentry);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.act_ipentry, menu);
    return true;
}

/** Called when the user clicks the SendIP button */
public void sendip (View view) {
    Intent intent = new Intent(this, IPControl.class);
    EditText editText = (EditText) findViewById(R.id.smartipaddress);
    String actu_ip = editText.getText().toString();
    intent.putExtra(ACTUALSMARTIP, actu_ip);
    startActivity(intent);
}
}

我的 IP 连接和命令发送页面 (XML)

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".IPControl" >

<TextView
    android:id="@+id/textStatus"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/getModel"
    android:text="@string/status"
    android:textSize="24sp" />

<EditText
    android:id="@+id/editText1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:ems="10"
    android:hint="@string/command" >

    <requestFocus />
</EditText>

<Button
    android:id="@+id/getModel"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_toRightOf="@+id/editText1"
    android:text="@string/Modelbutton" />

</RelativeLayout>

我的 IP 连接和命令发送页面（Java 类）

package com.smarte.smartipcontrol;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;

public class IPControl extends Activity {

private Socket socket;
private String serverIpAddress;
private static final int REDIRECTED_SERVERPORT = 32;
public PrintWriter out;
public BufferedReader in;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Get the message from the intent
    Intent intent = getIntent();
    serverIpAddress = intent.getStringExtra(IPEntry.ACTUALSMARTIP);
    createConnection();

}

public void getModel(View view) {
    try {
        out.println("[c,l#,o13,i13crlf\r\n");
        //System.out.print("root\r\n");
        while(!in.ready());
        readBuffer();

    } catch(IOException e) {}
}

public void createConnection() {
    try {
         InetAddress serverAddr = InetAddress.getByName(serverIpAddress);
         socket = new Socket(serverAddr, REDIRECTED_SERVERPORT);
      } catch (UnknownHostException e1) {
         e1.printStackTrace();
      } catch (IOException e1) {
         e1.printStackTrace();
      }
    try {
        out = new PrintWriter(new BufferedWriter(new         OutputStreamWriter(socket.getOutputStream())),true);
        in = new BufferedReader(new         InputStreamReader(socket.getInputStream()));
        while(!in.ready());
        readBuffer();
        out.println("root\r\n");
        //System.out.print("root\r\n");
        while(!in.ready());
        readBuffer();
        out.println("root\r\n");
        //System.out.print("root\r\n");
        while(!in.ready());
        readBuffer();
    } catch(IOException e) {}
}

private String readBuffer() throws IOException {
    String msg = "";

    while(in.ready()) {
        msg = msg + (char)in.read();
    }
    //System.out.print(msg);
    if(msg.indexOf("SCX_COM> ") != -1) return msg.substring(0,            msg.indexOf("SCX_COM> "));
    else return msg;
}
}

安卓清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.smarte.smartipcontrol"
android:versionCode="1"
android:versionName="1.0" >

<uses-permission android:name="android.permission.INTERNET"> </uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"> </uses-permission>


<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="16" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.smarte.smartipcontrol.IPEntry"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
<activity android:name="com.smarte.smartipcontrol.IPControl" />

</application>

</manifest>

......最后是字符串（以防万一）

<string name="app_name">SmartiP Control</string>
<string name="enterip">Enter IP Address</string>
<string name="menu_settings">Settings</string>
<string name="ipconbut">Connect</string>
<string name="hello_world">Hello world!</string>
<string name="title_activity_ipcontrol">IPControl</string>
<string name="Modelbutton">Model</string>
<string name="command">Enter Command</string>
<string name="status">Status</string>

日志猫..

12-01 03:19:50.977: E/AndroidRuntime(1537): FATAL EXCEPTION: main
12-01 03:19:50.977: E/AndroidRuntime(1537): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.smarte.smartipcontrol/com.smarte.smartipcontrol.IPControl}: android.os.NetworkOnMainThreadException
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.os.Handler.dispatchMessage(Handler.java:99)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.os.Looper.loop(Looper.java:137)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.app.ActivityThread.main(ActivityThread.java:5039)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at java.lang.reflect.Method.invokeNative(Native Method)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at java.lang.reflect.Method.invoke(Method.java:511)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at dalvik.system.NativeStart.main(Native Method)
12-01 03:19:50.977: E/AndroidRuntime(1537): Caused by: android.os.NetworkOnMainThreadException
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at libcore.io.IoBridge.connect(IoBridge.java:112)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at java.net.Socket.startupSocket(Socket.java:566)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at java.net.Socket.<init>(Socket.java:225)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at com.smarte.smartipcontrol.IPControl.createConnection(IPControl.java:50)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at com.smarte.smartipcontrol.IPControl.onCreate(IPControl.java:33)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.app.Activity.performCreate(Activity.java:5104)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
12-01 03:19:50.977: E/AndroidRuntime(1537):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
12-01 03:19:50.977: E/AndroidRuntime(1537):     ... 11 more

请帮我..........

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1 回答 1

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克里斯·斯特拉顿在上面的评论中。

谢谢克里斯....

“引起：android.os.NetworkOnMainThreadException”是你的问题。在线上有大量关于该问题的文档，因此请进行一些研究，然后重新构建您的程序以与 Android 的 UI 响应目标兼容。

于 2012-12-03T15:28:15.713 回答