Android用Intent实现Camera 拍照功能

[实例简介]Open GL 入门级示例 [实例截图] [核心代码]package com.china.gltry;import javax.microedition.khronos.egl.EGL10;import javax.microedition.khronos.egl.EGL11;import javax.microedition.khronos.egl.EGLConfig;import javax.microedition.khronos.egl.EGLContext;import javax.microedition.khronos.egl.EGLDisplay;import javax.microedition.khronos.egl.EGLSurface;import javax.microedition.khronos.opengles.GL;import android.view.SurfaceHolder;/** * An EGL helper class. */public class EGLHelper{ public EGLHelper() { } /** * Initialize EGL for a given configuration spec. * @param configSpec */ public void start(int[] configSpec){ /* * Get an EGL instance */ mEgl = (EGL10) EGLContext.getEGL(); /* * Get to the default display. */ mEglDisplay = mEgl.eglGetDisplay(EGL10.EGL_DEFAULT_DISPLAY); /* * We can now initialize EGL for that display */ int[] version = new int[2]; mEgl.eglInitialize(mEglDisplay, version); EGLConfig[] configs = new EGLConfig[1]; int[] num_config = new int[1]; mEgl.eglChooseConfig(mEglDisplay, configSpec, configs, 1, num_config); mEglConfig = configs[0]; /* * Create an OpenGL ES context. This must be done only once, an * OpenGL context is a somewhat heavy object. */ mEglContext = mEgl.eglCreateContext(mEglDisplay, mEglConfig, EGL10.EGL_NO_CONTEXT, null); mEglSurface = null; } /* * Create and return an OpenGL surface */ public GL createSurface(SurfaceHolder holder) { /* * The window size has changed, so we need to create a new * surface. */ if (mEglSurface != null) { /* * Unbind and destroy the old EGL surface, if * there is one. */ mEgl.eglMakeCurrent(mEglDisplay, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_CONTEXT); mEgl.eglDestroySurface(mEglDisplay, mEglSurface); } /* * Create an EGL surface we can render into. */ mEglSurface = mEgl.eglCreateWindowSurface(mEglDisplay, mEglConfig, holder, null); /* * Before we can issue GL commands, we need to make sure * the context is current and bound to a surface. */ mEgl.eglMakeCurrent(mEglDisplay, mEglSurface, mEglSurface, mEglContext); GL gl = mEglContext.getGL(); return gl; } /** * Display the current render surface. * @return false if the context has been lost. */ public boolean swap() { mEgl.eglSwapBuffers(mEglDisplay, mEglSurface); /* * Always check for EGL_CONTEXT_LOST, which means the context * and all associated data were lost (For instance because * the device went to sleep). We need to sleep until we * get a new surface. */ return mEgl.eglGetError() != EGL11.EGL_CONTEXT_LOST; } public void finish() { if (mEglSurface != null) { mEgl.eglMakeCurrent(mEglDisplay, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_SURFACE, EGL10.EGL_NO_CONTEXT); mEgl.eglDestroySurface(mEglDisplay, mEglSurface); mEglSurface = null; } if (mEglContext != null) { mEgl.eglDestroyContext(mEglDisplay, mEglContext); mEglContext = null; } if (mEglDisplay != null) { mEgl.eglTerminate(mEglDisplay); mEglDisplay = null; } } EGL10 mEgl; EGLDisplay mEglDisplay; EGLSurface mEglSurface; EGLConfig mEglConfig; EGLContext mEglContext;}

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从蓝牙4.0开始包含两个蓝牙芯片模块：传统/经典蓝牙模块(Classic Bluetooth,简称BT)和低功耗蓝牙(Bluetooth Low Energy,简称BLE) 经典蓝牙是在之前的蓝牙1.0,1.2,2.0 EDR,2.1 EDR,3.0 EDR等基础上发展和完善起来的, 而低功耗蓝牙是Nokia的Wibree标准上发展起来的，是完全不同两个标准。1.经典蓝牙模块(BT)泛指蓝牙4.0以下的模块，一般用于数据量比较大的传输，如：语音、音乐、较高数据量传输等。经典蓝牙模块可再细分为：传统蓝牙模块和高速蓝牙模块。传统蓝牙模块在2004年推出，主要代表是支持蓝牙2.1协议的模块，在智能手机爆发的时期得到广泛支持。高速蓝牙模块在2009年推出，速率提高到约24Mbps，是传统蓝牙模块的八倍。 传统蓝牙有3个功率级别，Class1,Class2,Class3,分别支持100m,10m,1m的传输距离2.低功耗蓝牙模块(BLE)泛指蓝牙4.0或更高的模块，蓝牙低功耗技术是低成本、短距离、可互操作的鲁棒性无线技术，工作在免许可的2.4GHz ISM射频频段。因为BLE技术采用非常快速的连接方式，因此平时可以处于“非连接”状态（节省能源），此时链路两端相互间只是知晓对方，只有在必要时才开启链路，然后在尽可能短的时间内关闭链路(每次最多传输20字节)。低功耗蓝牙无功率级别，一般发送功率在7dBm，一般在空旷距离，达到20m应该是没有问题

简单的txt浏览器，感觉还算好用吧。喜欢的下载吧

android-onvif是一个基于android系统控制onvif协议摄像头的软件项目，例如海康摄像头等。本项目已将接口封装，使用简单。后续将扩展更多功能。。。功能介绍探索与发现摄像头摄像头参数获取和获取摄像头账号密码修改摄像头的固件升级摄像头截图修改摄像头时间重启摄像头修改摄像头ip

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