Android上下文-阿里云

Android 中实现上下文菜单(Context menu)详解

效果如图所示：步骤一：实现activity_context_menu.xml和item_context.xml1.1.activity_context_menu.xml<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmln...

Android 彩色上下文菜单 Context

零：需求分析什么是Android进程上下文？它是应用程序环境的全局信息的接口。这是一个抽象类，由Android系统提供。它允许访问特定于应用程序的资源和类，以及调用应用程序级操作，如启动活动，广播和接收意图等。如果有这样一个需求，客户要求将Android中的“进程上下文”字体修改为某种颜色ÿ...

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【Android FFMPEG 开发】FFMPEG 音频重采样 ( 初始化音频重采样上下文 SwrContext | 计算音频延迟 | 计算输出样本个数 | 音频重采样 swr_convert )（一）

I . FFMPEG 播放视频流程FFMPEG 播放视频流程 : 视频中包含图像和音频 ;① FFMPEG 初始化 : 参考博客【Android FFMPEG 开发】FFMPEG 初始化 ( 网络初始化 | 打开音视频 | 查找音视频流 )② FFMPEG 获取 AVStream 音视频流 : 参...

【Android FFMPEG 开发】FFMPEG 音频重采样 ( 初始化音频重采样上下文 SwrContext | 计算音频延迟 | 计算输出样本个数 | 音频重采样 swr_convert )（二）

VI . FFMPEG 计算音频重采样输出样本个数1 . FFMPEG 音频重采样 : 音频重采样操作 , 需要指定一个输出样本个数, 目前已知的是输入音频采样个数 , 输出音频采样率 , 输入音频采样率 , 需要计算出输出的音频采样个数 ;2 . 计算公式如下 :音频播放时间 = 输 ...

【Android FFMPEG 开发】FFMPEG 获取编解码器 ( 获取编解码参数 | 查找编解码器 | 获取编解码器上下文 | 设置上下文参数 | 打开编解码器 )

文章目录博客简介 . FFMPEG 编解码器获取流程I . FFMPEG 获取音视频流的编解码参数 AVCodecParameters *codecparII . FFMPEG 查找解码器 avcodec_find_decoder ( )III . FFMPEG 获取编解码器上下文 avcodec_...

Android：确定当前上下文以显示警报

我正在使用Intents 从Screen-A调用ZXing扫描仪。扫描完成后，控件当然会返回到Screen-A背后的代码，在调用Screen-B之前，我会做一些其他工作。问题是：在此工作期间屏幕为黑色，我无法确定用于显示“正在运行的……” Toast / msgbox的适当上下文。有什么帮助或建议...

Android 创建其它应该程序的上下文对象

// Context.CONTEXT_IGNORE_SECURITY 忽略安全检测 //getContext().createPackageContext 创建其它应该程序的上下文对象 ...

Android Context 上下文你必须知道的一切

转载请标明出处：http://blog.csdn.net/lmj623565791/article/details/40481055，本文出自：【张鸿洋的博客】本文大多数内容翻译自：http://www.doubleencore.com/2013/06/context/ 我重...

Android：Context上下文菜单、ContextMenu

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Android菜单详解（四）——使用上下文菜单ContextMenu

ContextMenu简介在Windows中，我们已经习惯了在文件上单击右键来执行“打开”、“重名名”、“剪切”、“删除”等操作，这个右键弹出的菜单就是上下文菜单。你可能会笑道：“哈哈，你不会连快捷键都不会用吧？”。咳咳，这个。。。举个例子嘛。没错，windows中快捷键能帮助我们提高操作的效率，...

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