一、编写连接ESP8266 WiFi模块（ESP8266-01S芯片）WiFi的Android客户端安卓主程序
package com.example.esp8266androidclient; import java.io.IOException; import java.io.PrintStream; import java.net.Socket; import android.os.Bundle; import android.support.v7.app.ActionBarActivity; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public class ESP8266AndroidClientMainActivity extends ActionBarActivity implements View.OnClickListener { private EditText IP;//IP private EditText PORT;//端口号 private String stringip;//字符串类型IP private int stringport;//字符类型端口号 private Button connect;//连接 private Socket socket;//套接字 private PrintStream out;//打印输出流 private ConnectThread connectthread;//连接线程 private Button open;//按钮LED灯开 private Button close;//按钮LED灯关 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_esp8266_android_client_main); connect=(Button)findViewById(R.id.button1); open=(Button)findViewById(R.id.button2); close=(Button)findViewById(R.id.button3); IP=(EditText)findViewById(R.id.editextip); PORT=(EditText)findViewById(R.id.editextport); connect.setOnClickListener(this); open.setOnClickListener(this); close.setOnClickListener(this); } @Override public void onClick(View v) { switch(v.getId()) { case R.id.button1: if( socket == null || ! socket.isConnected()) { stringip = IP.getText().toString(); stringport = Integer.valueOf(PORT.getText().toString()); connectthread = new ConnectThread(stringip, stringport); connectthread.start(); } if(socket != null && socket.isConnected()) { try { socket.close(); socket=null; // 清空mSocket connect.setText("连接"); Toast.makeText(ESP8266AndroidClientMainActivity.this,"连接已关闭", Toast.LENGTH_LONG).show(); } catch (IOException e) { e.printStackTrace(); } } break; case R.id.button2: if(out!=null) { out.print("0"); out.flush(); } break; case R.id.button3: if (out!=null) { out.print("1"); out.flush(); } break; } } private class ConnectThread extends Thread { private String ip; private int port; public ConnectThread(String ip,int port){ this.ip=ip; this.port=port; } @Override public void run() { try { socket=new Socket(ip,port); out = new PrintStream(socket.getOutputStream()); runOnUiThread(new Runnable() { @Override public void run() { connect.setText("断开"); Toast.makeText(ESP8266AndroidClientMainActivity.this,"连接成功",Toast.LENGTH_LONG).show(); } }); } catch (IOException e) { e.printStackTrace(); runOnUiThread(new Runnable() { @Override public void run() { connect.setText("断开"); Toast.makeText(ESP8266AndroidClientMainActivity.this,"连接失败",Toast.LENGTH_LONG).show(); } }); } } } }
二、编写连接ESP8266 WiFi模块（ESP8266-01S芯片）WiFi的Android客户端APP安卓界面布局程序
<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" android:orientation="vertical" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.example.esp8266androidclient.ESP8266AndroidClientMainActivity" > <LinearLayout android:id="@+id/linearLayout1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="服务器地址：" android:textSize="20dp" /> <EditText android:id="@+id/editextip" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:ems="10" android:hint="ESP8266 WiFi模块WiFi地址号" android:inputType="textPersonName" /> </LinearLayout> <LinearLayout android:id="@+id/linearLayout2" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignLeft="@+id/linearLayout1" android:layout_below="@+id/linearLayout1" > <TextView android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="服务器端口：" android:textSize="20dp" /> <EditText android:id="@+id/editextport" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1" android:ems="10" android:hint="ESP8266 WiFi模块WiFi端口号" android:inputType="textPersonName" /> </LinearLayout> <Button android:id="@+id/button1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignLeft="@+id/linearLayout2" android:layout_below="@+id/linearLayout2" android:layout_marginTop="30dp" android:text="连接"/> <Button android:id="@+id/button2" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignLeft="@+id/button1" android:layout_below="@+id/button1" android:layout_marginTop="30dp" android:text="打开" /> <Button android:id="@+id/button3" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignLeft="@+id/button2" android:layout_below="@+id/button2" android:layout_marginTop="30dp" android:text="关闭" /> </RelativeLayout>
三、编写连接ESP8266 WiFi模块（ESP8266-01S芯片）WiFi的Android客户端APP安卓属性权限程序
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.esp8266androidclient" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="21" /> <uses-permission android:name="android.permission.INTERNET"></uses-permission> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"></uses-permission> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".ESP8266AndroidClientMainActivity" 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>
四、编写连接ESP8266 WiFi模块（ESP8266-01S芯片）WiFi的Android客户端APP字符串资源程序
<?xml version="1.0" encoding="utf-8"?> <resources> <string name="app_name">ESP8266AndroidClient</string> <string name="hello_world">Hello world!</string> <string name="action_settings">Settings</string> </resources>
五、连接ESP8266 WiFi模块（ESP8266-01S芯片）WiFi的Android客户端APP界面