Android 使用Matrix.postRotate方法旋转图片

应用背景你是否见过android的app在断网的情况下打开之后不出现界面， 然后打开网络的时候还是不会出现界面，这就需要在activity中检测网络的连接状态， 这时候如果有网络你就可以做网络访问了，如果没有网络的话，就继续监听 一旦网络连接了，就会自动去加载你要联网的操作， 关键技术 此源码是检测网络状态是否连接，在activity创建的时候检查一遍是否有网络

人脸识别APP代码，安卓开发环境,手机端识别人脸。 人脸识别APP代码，安卓开发环境,手机端识别人脸。

Android编写的支持AI技术的局域网对战五子棋游戏，人机对战响应、人人对战响应、退出游戏响应、更多游戏响应则跳转到相应的游戏下载界面。 　　同时游戏中还涉及到消息处理（弹出一些提示消息等）、退出房间响应、棋盘监听（主要是监听游戏是否开始）、重置棋手信息、发送处理消息、通讯监听（主要是监听请求进入游戏的对手信息）、退出当前游戏（如果是主机身份请求退出游戏界面 则撤销建立的主机 返回准备界面）等的响应处理。

全部内容基于Android SDK 随书附赠400多分钟的详细教学视频,286段示例代码 从事一线开发的作者团队提供在线答疑.(GoogleAndroidDevelopment and Practice)

应用背景#define NUM_EXTRUDER 1 #define MOTHERBOARD 33 #include "pins.h" // ################## EDIT THESE SETTINGS MANUALLY ################ // ################ END MANUAL SETTINGS ########################## #define FAN_BOARD_PIN -1 //#define EXTERNALSERIAL  use Arduino serial library instead of build in. Requires more ram, has only 63 byte input buffer. // Uncomment the following line if you are using arduino compatible firmware made for Arduino version earlier then 1.0 // If it is incompatible you will get compiler errors about write functions not beeing compatible! //#define COMPAT_PRE1 #define BLUETOOTH_SERIAL  -1 #define BLUETOOTH_BAUD  115200 #define MIXING_EXTRUDER 0 #define DRIVE_SYSTEM 0 #define XAXIS_STEPS_PER_MM 80 #define YAXIS_STEPS_PER_MM 80 #define ZAXIS_STEPS_PER_MM

* 1. 识别率更高，支付宝，等软件的识别效率更高。 * 2. 复杂的环境下，依然能保持很高的识别率。 * 3. 能支持更多token的识别，通过编码可以传送所有字符。 * 4. 通过定制可以实现相同字符的连续传递,比如“234456”。 * 5. 支持自动纠错功能，在有3个以内字符解码出错的情况下可以自动纠正。 * 6. 程序运行效率非常高，可以用于智能手机，功能手机，嵌入式设备，PC，平板等嵌入式系统上。 * 7. 声波的频率声音和音量可定制。

在装有android系统的手机上，该程序可以检测手机电池的存余量并显示。(This program can detect the battery of the phone and show the amount of the battery.)

核心代码：package com.Test;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.app.Activity;import android.view.Menu;import android.widget.Button;import android.view.View;import android.view.View.OnClickListener;import java.io.BufferedInputStream;import java.io.InputStream;import java.io.OutputStream;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.io.InputStreamReader;import java.io.BufferedReader;import java.io.PrintWriter;import java.io.Reader;import java.net.Socket;import java.net.ServerSocket;import java.net.UnknownHostException;import android.view.TextureView;import android.widget.EditText;import java.lang.String;import java.lang.Thread;public class MainActivity extends Activity implements OnClickListener{ private Button m_btn; private Button m_sendbtn; private ServerSocket mySerSocket; private Socket clientSocket; private EditText m_edit; private String line; boolean conn = true; private Socket accSocket; private static final String Host = "10.0.2.2"; private static final int Port = 12000; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); m_btn = (Button)findViewById(R.id.button1); m_sendbtn = (Button)findViewById(R.id.button2); m_edit = (EditText)findViewById(R.id.editText1); //m_btn.setOnClickListener(this); m_btn.setOnClickListener(new ReceiverListener()); m_sendbtn.setOnClickListener(this); //Socket clientSocket = new Socket(Host, Port); } class ReceiverListener implements OnClickListener { private ReceiveThread mReceiveThread = null; private boolean stop = true; private Handler mHandler = null; public void onClick(View v) { try { if(clientSocket == null) { clientSocket = new Socket(Host, Port); } // InputStream myInputStream = clientSocket.getInputStream();// // //BufferedReader in = new BufferedReader(new InputStreamReader(myInputStream));//// byte [] buffer = new byte[myInputStream.available()]; //int temp = 0; //String strMsg = in.readLine(); // myInputStream.read(buffer);// // // String strMsg = new String(buffer);// // m_edit.setText(strMsg);// while ((temp = myInputStream.read(buffer)) != -1)// {// m_edit.setText(new String(buffer, 0, temp));//// } mReceiveThread = new ReceiveThread(clientSocket); stop = false; mReceiveThread.start(); } catch (IOException e) { e.printStackTrace(); } //消息处理 mHandler = new Handler() { public void handleMessage(Message msg) { m_edit.setText((msg.obj).toString()); } }; } private class ReceiveThread extends Thread { private InputStream inStream = null; private byte[] buf; private String str = null; ReceiveThread(Socket s) { try { this.inStream = s.getInputStream(); } catch(IOException e) { e.printStackTrace(); } } public void run() { while(!stop) { this.buf = new byte[512]; try { this.inStream.read(this.buf); } catch(IOException e) { e.printStackTrace(); } try { this.str = new String(this.buf, "GB2312").trim(); } catch(UnsupportedEncodingException e) { e.printStackTrace(); } Message msg = new Message(); msg.obj = this.str; mHandler.sendMessage(msg); } } } } public void onClick(View v) {// if (v.getId() == R.id.button1)// {// new Thread()// {// public void run()// {// try // {// if(clientSocket == null)// {// clientSocket = new Socket(Host, Port);// } // InputStream myInputStream = clientSocket.getInputStream();// // BufferedReader in = new BufferedReader(new InputStreamReader(myInputStream));//// byte [] buffer = new byte[1024 * 4];//// int temp = 0;// // String strMsg = in.readLine();// // //myInputStream.read(buffer);// // //String strMsg = new String(buffer);// // m_edit.setText(strMsg);////// while ((temp = myInputStream.read(buffer)) != -1)//// {//// m_edit.setText(new String(buffer, 0, temp));//////// }// // }// catch (IOException e)// {// e.printStackTrace();// }// }// }.start();// // } if(v.getId() == R.id.button2) { new Thread() { public void run() { try { if(clientSocket == null) { clientSocket = new Socket(Host, Port); } //inputStream clientInputStream = clientSocket. String msg = "RESET-SHOW"; //InputStream clientInputStream = clientSocket.getInputStream(); //BufferedReader br = new BufferedReader(new InputStreamReader(clientSocket.getInputStream())); //BufferedReader br = new BufferedReader(); //line = br.readLine(); OutputStream clientOutputStream = clientSocket.getOutputStream(); byte buffer[]=msg.getBytes(); clientOutputStream.write(buffer); clientOutputStream.flush(); //int temp = 0; // PrintWriter out = new PrintWriter(clientOutputStream);// // out.println("Serer Message: " msg); } catch(IOException e) { e.printStackTrace(); } } }.start(); } }private Reader InputStreamReader() { // TODO Auto-generated method stub return null; }// private Handler handler = new Handler()// {// public void handleMessage(Message msg)// {// super.handleMessage(msg);// //处理UI// m_edit.setText("Finish");// Log.i("PDA", "Finish");// // }// }; @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; }}

Android应用源码随手记安卓记账项目

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