javascript 简单的安卓套接字客户端
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simple android socket client
提问by user1324420
I am very novice in Android Java Programming, so it is hard to figure my problem up. I have simple node.js server, that just listen localhost:7000 and print any input into console (it works fine with my actionscript client). I need to do something simmilar to understand Android, just simple client socket sender, that write anything that i can view in my server log. Here is the code, i trying to use on eclipse Android emulator and if i use "localhost" or "127.0.0.1" it works without errors but nothing happens (server log would be empty), and if i change it to my server local adress (here is wi-fi local network and phone uses it) application just throw en error after big freeze then shutdown. Simmilar problem with phone.
我是 Android Java 编程的新手，所以很难弄清楚我的问题。我有一个简单的 node.js 服务器，它只听 localhost:7000 并将任何输入打印到控制台（它在我的 actionscript 客户端上运行良好）。我需要做一些类似的事情来理解Android，只是简单的客户端套接字发送者，写下我可以在我的服务器日志中查看的任何内容。这是代码，我尝试在 eclipse Android 模拟器上使用，如果我使用“localhost”或“127.0.0.1”，它可以正常工作但没有任何错误（服务器日志将为空），如果我将其更改为本地服务器地址（这里是 wi-fi 本地网络，手机使用它）应用程序在大冻结然后关闭后只是抛出错误。手机的类似问题。
Client-side:
客户端：
package etc.supachat;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketException;
import java.net.UnknownHostException;
import android.app.Activity;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.TextView;
public class SupaChatActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
Socket s = new Socket("192.168.1.34", 7000);
//outgoing stream redirect to socket
OutputStream out = s.getOutputStream();
PrintWriter output = new PrintWriter(out);
output.println("Hello Android!");
BufferedReader input = new BufferedReader(new InputStreamReader(s.getInputStream()));
//read line(s)
String st = input.readLine();
//Close connection
s.close();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
This is manifest code:
这是清单代码：
<uses-sdk android:minSdkVersion="7" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".SupaChatActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
And this is simple ui:
这是简单的用户界面：
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/out_view"
android:layout_width="162dp"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
</RelativeLayout>
</LinearLayout>
UpdateHere is eclipse console log:
更新这里是 Eclipse 控制台日志：
05-05 18:13:49.172: D/AndroidRuntime(1452): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
05-05 18:13:49.172: D/AndroidRuntime(1452): CheckJNI is ON
05-05 18:13:49.921: D/AndroidRuntime(1452): Calling main entry com.android.commands.pm.Pm
05-05 18:13:49.950: D/AndroidRuntime(1452): Shutting down VM
05-05 18:13:49.971: D/dalvikvm(1452): GC_CONCURRENT freed 101K, 71% free 297K/1024K, external 0K/0K, paused 7ms+1ms
05-05 18:13:49.971: I/AndroidRuntime(1452): NOTE: attach of thread 'Binder Thread #3' failed
05-05 18:13:49.981: D/dalvikvm(1452): Debugger has detached; object registry had 1 entries
05-05 18:13:50.491: D/AndroidRuntime(1462): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
05-05 18:13:50.491: D/AndroidRuntime(1462): CheckJNI is ON
05-05 18:13:51.231: D/AndroidRuntime(1462): Calling main entry com.android.commands.am.Am
05-05 18:13:51.271: I/ActivityManager(68): Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=etc.supachat/.SupaChatActivity } from pid 1462
05-05 18:13:51.321: I/ActivityManager(68): Start proc etc.supachat for activity etc.supachat/.SupaChatActivity: pid=1470 uid=10035 gids={3003}
05-05 18:13:51.362: D/AndroidRuntime(1462): Shutting down VM
05-05 18:13:51.371: D/dalvikvm(1462): GC_CONCURRENT freed 102K, 69% free 319K/1024K, external 0K/0K, paused 1ms+1ms
05-05 18:13:51.421: D/dalvikvm(1462): Debugger has detached; object registry had 1 entries
05-05 18:14:01.324: W/ActivityManager(68): Launch timeout has expired, giving up wake lock!
05-05 18:14:02.033: W/ActivityManager(68): Activity idle timeout for HistoryRecord{406a46a8 etc.supachat/.SupaChatActivity}
05-05 18:14:07.151: D/dalvikvm(137): GC_EXPLICIT freed 47K, 52% free 2817K/5831K, external 4863K/5566K, paused 84ms
05-05 18:16:19.360: I/InputDispatcher(68): Application is not responding: AppWindowToken{407b8948 token=HistoryRecord{406a46a8 etc.supachat/.SupaChatActivity}}. 5036.3ms since event, 5035.8ms since wait started
05-05 18:16:19.360: I/WindowManager(68): Input event dispatching timed out sending to application AppWindowToken{407b8948 token=HistoryRecord{406a46a8 etc.supachat/.SupaChatActivity}}
05-05 18:16:19.491: I/Process(68): Sending signal. PID: 1470 SIG: 3
05-05 18:16:19.491: I/dalvikvm(1470): threadid=4: reacting to signal 3
05-05 18:16:19.520: I/dalvikvm(1470): Wrote stack traces to '/data/anr/traces.txt'
05-05 18:16:19.531: I/Process(68): Sending signal. PID: 68 SIG: 3
05-05 18:16:19.531: I/dalvikvm(68): threadid=4: reacting to signal 3
05-05 18:16:19.580: I/dalvikvm(68): Wrote stack traces to '/data/anr/traces.txt'
05-05 18:16:19.580: I/Process(68): Sending signal. PID: 125 SIG: 3
05-05 18:16:19.590: I/dalvikvm(125): threadid=4: reacting to signal 3
05-05 18:16:19.610: I/dalvikvm(125): Wrote stack traces to '/data/anr/traces.txt'
05-05 18:16:19.610: I/Process(68): Sending signal. PID: 128 SIG: 3
05-05 18:16:19.620: I/dalvikvm(128): threadid=4: reacting to signal 3
05-05 18:16:19.630: I/dalvikvm(128): Wrote stack traces to '/data/anr/traces.txt'
05-05 18:16:20.030: D/dalvikvm(68): GC_EXPLICIT freed 789K, 47% free 4557K/8519K, external 3520K/3903K, paused 112ms
05-05 18:16:20.720: E/ActivityManager(68): ANR in etc.supachat (etc.supachat/.SupaChatActivity)
05-05 18:16:20.720: E/ActivityManager(68): Reason: keyDispatchingTimedOut
05-05 18:16:20.720: E/ActivityManager(68): Load: 0.09 / 0.12 / 0.09
05-05 18:16:20.720: E/ActivityManager(68): CPU usage from 14302ms to 0ms ago:
05-05 18:16:20.720: E/ActivityManager(68): 0.4% 68/system_server: 0.2% user + 0.2% kernel
05-05 18:16:20.720: E/ActivityManager(68): 0.4% 128/com.android.systemui: 0.2% user + 0.1% kernel / faults: 1 minor
05-05 18:16:20.720: E/ActivityManager(68): 0.1% 125/com.android.phone: 0% user + 0.1% kernel
05-05 18:16:20.720: E/ActivityManager(68): 0% 12/pdflush: 0% user + 0% kernel
05-05 18:16:20.720: E/ActivityManager(68): 0% 332/logcat: 0% user + 0% kernel
05-05 18:16:20.720: E/ActivityManager(68): 1.6% TOTAL: 0.9% user + 0.6% kernel
05-05 18:16:20.720: E/ActivityManager(68): CPU usage from 678ms to 1270ms later:
05-05 18:16:20.720: E/ActivityManager(68): 8.3% 68/system_server: 3.3% user + 5% kernel
05-05 18:16:20.720: E/ActivityManager(68): 8.3% 98/InputDispatcher: 6.6% user + 1.6% kernel
05-05 18:16:20.720: E/ActivityManager(68): 13% TOTAL: 6.6% user + 6.6% kernel
05-05 18:16:20.750: I/InputDispatcher(68): Dropping event because the pointer is not down.
05-05 18:16:23.530: W/ActivityManager(68): Force finishing activity etc.supachat/.SupaChatActivity
05-05 18:16:23.550: I/ActivityManager(68): Killing etc.supachat (pid=1470): user's request
05-05 18:16:23.550: I/Process(68): Sending signal. PID: 1470 SIG: 9
05-05 18:16:23.570: I/ActivityManager(68): Process etc.supachat (pid 1470) has died.
05-05 18:16:23.770: W/InputManagerService(68): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@406c8c68
Update 2.Here is the server-side script, that works with actionscript-client (it is something like chat, that i write to understand new language and platform):
更新 2.这是服务器端脚本，它与 actionscript-client 一起使用（它类似于聊天，我编写它是为了理解新语言和平台）：
var net = require("net"), sys = require('util');
var names = Array();
var streams = Array();
var policy = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
"<!DOCTYPE cross-domain-policy SYSTEM \"http://www.adobe.com/xml/dtds/cross-domain-policy.dtd\">" +
"<cross-domain-policy><allow-access-from domain=\"*\" to-ports=\"*\" />" +
"</cross-domain-policy><uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
";
function onStreamData(data){
var current_stream = this;
console.log(data);
if(data.substring(1,20) == "policy-file-request"){
console.log("asd");
current_stream.write(policy);
}
else if(data.substring(0,6) == "[name]"){
console.log("name");
names.push(data.substring(6, data.length));
streams.push(current_stream);
}
else
{
var na;
for(i =0; i<names.length; i++){
if(current_stream == streams[i]){
na = names[i]
}
}
for(i =0; i<names.length; i++){
if(streams[i]!=null){
streams[i].write(na+data+"##代码##");
}
}
}
}
function onClose(){
var current_stream = this;
for(i = 0; i<streams.length; i++){
if(streams == current_stream){
streams.splice(i, 1);
names.splice(i, 1);
}
}
current_stream.end();
}
var server = net.createServer(function (stream) {
stream.setEncoding("utf8");
stream.on('data', onStreamData);
stream.on('end', onClose);
});
server.listen(7000, "127.0.0.1");
回答by
Quick fix: Host computer can always be accessed from emulator with IP address: 10.0.2.2So you should use this ip address in android code to connect with host computer.
快速修复：主机始终可以从 IP 地址为 10.0.2.2 的模拟器访问，因此您应该在 android 代码中使用此 IP 地址与主机连接。
Further Details(here):
更多详情（这里）：
Android emulator is not on the same network as on which the host computer is. Rather android emulator is on a virtual network, behind a virtual router. So the emulator cannot connect to private ip address of your host computer.(Since it is on a different network).
Android 模拟器与主机不在同一网络上。而是 android 模拟器位于虚拟网络上，位于虚拟路由器后面。因此模拟器无法连接到您主机的私有 IP 地址。（因为它在不同的网络上）。
And when you use localhost(or 127.0.0.1) in android code, it means that you want to access the android device so it does not make sense in your case.
当您在 android 代码中使用 localhost（或 127.0.0.1）时，这意味着您要访问 android 设备，因此在您的情况下没有意义。
回答by Moises Jimenez
To run it on your phone you also need the following permission on you AndroidManifest.xml:
要在手机上运行它，您还需要对 AndroidManifest.xml 拥有以下权限：
##代码##I'd like to see the server side since I see no other error.
我想看看服务器端，因为我没有看到其他错误。
