![]() For Windows, Cygwin 1.7 or higher is required.A recent version of awk (either GNU Awk or Nawk) is also required.Earlier versions of GNU Make might work but have not been tested. For all development platforms, GNU Make 3.81 or later is required.Required development tools for Android NDK Linux (32 or 64-bit Ubuntu 8.04, or other Linux distributions using GLibc 2.7 or later).Windows XP (32-bit) or Vista (32- or 64-bit).Supported operating systems for Android NDk Android 1.5 SDK or later version is required.A complete Android SDK installation (including all dependencies) is required.If you have not already installed and setup the Android SDK, please do so before downloading the NDK. The NDK is designed for use only in conjunction with the Android SDK. System Requirements for Android NDK Installation You cannot access features such as Services and Content Providers natively, so if you want to use them or any other framework API, you can still write JNI code to do so. Applications that use native activities must be run on Android 2.3 (API Level 9) or later. You can implement the callbacks in your native code to handle these events when they occur. The Android SDK provides the NativeActivity class, which is a convenience class that notifies your native code of any activity lifecycle callbacks (onCreate(), onPause(), onResume(), etc). Write a native activity, which allows you to implement the lifecycle callbacks in native code.You can install applications that use native code through the JNI on devices that run Android 1.5 or later. This technique allows you to take advantage of the convenience of the Android framework, but still allows you to write native code when necessary. Write your application using the Android framework and use JNI to access the APIs provided by the Android NDK.The Android framework provides two ways to use native code: The NDK can, however, can be an effective way to reuse a large corpus of existing C/C++ code. When examining whether or not you should develop in native code, think about your requirements and see if the Android framework APIs provide the functionality that you need. Simply re-coding a method to run in C usually does not result in a large performance increase. Typical good candidates for the NDK are self-contained, CPU-intensive operations that don't allocate much memory, such as signal processing, physics simulation, and so on. In general, you should only use native code if it is essential to your application, not just because you prefer to program in C/C++. As a developer, you need to balance its benefits against its drawbacks notably, using native code does not result in an automatic performance increase, but always increases application complexity. The NDK will not benefit most applications. If you have not run into any limitations using the Android framework APIs, you probably do not need the NDK. Using native code does not result in an automatic performance increase, but always increases application complexity. The fundamental Android application model does not change. apk file and they still run inside of a virtual machine on the device. If you write native code, your applications are still packaged into an. It provides headers and libraries that allow you to build activities, handle user input, use hardware sensors, access application resources, and more, when programming in C or C++. ![]() ![]() The Android NDK is a companion tool to the Android SDK that lets you build performance-critical portions of your apps in native code. Watch the top applications in action on Android Market Place or Publish your own apps.Īccess to the entire platform source database and provides you a chance to learn Android. Android plateform enables mobile apps developers to easily create useful mobile applications. ![]()
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