Delphi XE7如何在安卓手机上运行Mp3?

2015-02-14 12:20:01 702 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

USB接口协议、颜色标识与硬件设计全解析：从2.0到USB4 通用串行总线（USB）是现代设备互联和数据传输的核心技术，其工作原理基于主机与设备间的串行通信协议。从基础的USB 2.0到高速的USB 3.x和USB4，协议演进带来了传输速度、供电能力和功能支持的巨大跃升，其技术价值在于实现了数据传输、视频输出和电源供给的高度集成与标准化。这一特性使其广泛应用于个人电脑、移动设备、外设连接以及嵌入式系统开发等场景。在实际工程中，高速USB设计需严格遵循差分信号布线规则，并妥善处理Type-C接口的CC引脚。本文聚焦于USB协议版本、物理接口形态（如Type-A, Typ 阅读详情

在XE7上HTC连接,运行了MediaPayer,运行结果:
Go Up to Android Mobile Application Development

Android target platform with no Android emulator or Android deviceThe Target node within the Android target platform node in the Project Manager shows:

A list of the existing Android emulators installed on your PC, regardless of whether they are running or not.
A list of Android devices connected by USB to your PC, as long as you enable USB debugging and configure your PC to detect your device.
If the Project Manager does not show any Android emulator or device in the Target node within the Android target platform node, or if a device connected to your PC or an emulator installed in your PC does not show up:

Ensure that you have an Android SDK in the SDK Manager. Add an Android SDK if you do not have one already.
Right-click the Target node and select Refresh. A pair of green arrows should appear over the folder icon, indicating that the refresh operation is in progress (). If the green arrows disappear and nothing happens, read the next bullets.
If an expected Android device does not show up, see Enabling USB Debugging on an Android Device and Configuring Your System to Detect Your Android Device.
If an expected Android emulator does not show up, see Creating an Android Emulator.
If an expected Android emulator that is installed but not running does not show up, open the SDK Manager and check in the SDK Properties of your Android SDK that the value of the Android location field is correct.
If an expected Android device does not show up, or if a running Android emulator shows up as not running, open the SDK Manager and check in the SDK Properties of your Android SDK that the value of the Adb location field is correct.
希望有经验的给予帮助.

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