Android任务管理器源码

仿雅虎开始加载页，数据加载完后动画消失，手写gif引擎，仿glide框架，播放小电影，recycleview滑动toolbar显示隐藏，recycleview瀑布流，NavigationvIEW侧滑，控制侧滑的显示隐藏

Android编写的聊天软件，用于简单的用户之间的交流。有客户端和服务端组成(Android chat software written for the simple communication between users. A client and server components.)

实现蓝牙连接传输数据： 1 使用registerReceiver注册BroadcastReceiver来获取蓝牙状态、搜索设备等消息； 2 使用BlueAdatper的搜索； 3 在BroadcastReceiver的onReceive()里取得搜索所得的蓝牙设备信息(如名称，MAC，RSSI)； 4 在BroadcastReceiver的onReceive()里取得搜索所得的蓝牙设备信息(如名称，MAC，RSSI)；3 在BroadcastReceiver的onReceive()里取得搜索所得的蓝牙设备信息(如名称，MAC，RSSI)； 5 由BluetoothDevice衍生出BluetoothSocket，准备SOCKET来读写设备； 6 通过BluetoothSocket的createRfcommSocketToServiceRecord()方法来选择连接的协议/服务，这里用的是SPP(UUID:00001101-0000-1000-8000-00805F9B34FB)； 7 Connect之后(如果还没配对则系统自动提示)，使用BluetoothSocket的getInputStream()和getOutputStream()来读写蓝牙设备。

利用ffmpeg和SDL实现一个跨android版本的音视频播放器

Android C/s 模式的手机客户端与服务器端的json数据传输，内含有大量知识点。(Json data transfer mobile client and server-side Android C/s mode, which contains a lot of knowledge.)

利用WIFI做的室内定位利用 请点击左侧文件开始预览 ！预览只提供20%的代码片段，完整代码需下载后查看 加载中 侵权举报

This document was written for developers who have worked with Java™ before and want to start developing for the Android Platform. I tried to make this as much “hands on” as possible, placing example codes everywhere it fit. Also I tried to insert as many picture as possible, because they liven up the learning process and relax the reader’s eyes.

一首前奏，问谁是真正的歌神;百词任选，看谁是无敌的曲王。速速来报，等你来战

给recyclerview加上header和footer，扩展性良好；为recyclerview实现一个cursoradapter

可以注册登录、发送文字表情。 使用前请安装好mysql。 this is a android instant messenger based on socket communication basic functionality: 1. a user can register an account with a username, his/her age and gender 2. login with username and password 3. find out friends by username or particulars(age and gender) 4. chat with a friend with text and emoji 5. chatting history available for checking 6. messages sent to offline friends will be saved at server and pushed to that friend when he/she signs in 7. ringtone and vibration notification when a message arrived if messanger is not foreground