省、市、县级联选择Android改进版

NCI协议 最新的安卓NFC手机的NCI协议(NCI protocol )

android stopwatch 秒表 实现秒表的功能(android stopwatch stopwatch stopwatch function)

其中包含了 framelayout,relativelayout,relativeandlinear,tablelayout,选项卡tabwidget,checkbox多选框，radiogroup单选框，spinner下拉框，autocompleteTextView,Date/TimePicker,ProgressBar进度条,RatingBar投票,ImageSwitcher,GridView,Tab,OptionsMenu,ContextMenu,SubMenu,Activity值传递,4种AlertDialog,Notification 等控件的基本用法，非常适合入门级朋友学习。

 是一个显示树型结构的控件

Handler handler = new Handler(){@Overridepublic void handleMessage(Message msg) {switch (msg.what) {case 1://反序列化结果在handler里使用MagazineCategoryResp magazineCatagoryList = (MagazineCategoryResp) msg.obj;//这里打印查看结果  可以以类的方式获取json值System.out.println("Result=" magazineCatagoryList.data.get(0).name);tvTest.setText(magazineCatagoryList.data.get(0).name);break;}super.handleMessage(msg);}};

包含了Android开发中大部分的Intent使用(This Project contains most Intent using in Android Developing)

ocr光字符识别

Scan and connect ,send or receive data,usefull

服务端+数据库+安卓端通过Android客户端访问web服务器，实现一个登录功能。

脉冲宽度调制是一种模拟控制方式，根据相应载荷的变化来调制晶体管基极或MOS管栅极的偏置，来实现晶体管或MOS管导通时间的改变，从而实现开关稳压电源输出的改变。这种方式能使电源的输出电压在工作条件变化时保持恒定，是利用微处理器的数字信号对模拟电路进行控制的一种非常有效的技术。脉冲宽度调制是利用微处理器的数字输出来对模拟电路进行控制的一种非常有效的技术，广泛应用在从测量、通信到功率控制与变换的许多领域中。(Pulse width modulation (PWM) is an analog control method, which modulates the bias of transistor base or MOS gate according to the change of load, so as to change the turn-on time of transistor or MOS and realize the change of output of switching regulated power supply. This method can keep the output voltage of the power supply constant when the working conditions change. It is a very effective technology to control the analog circuit by using the digital signal of the microprocessor. Pulse width modulation (PWM) is a very effective technology to control analog circuits by using the digital output of microprocessors. It is widely used in many fields, from measurement, communication to power control and conversion.)