如何完全使用C++进行Android应用开发？

Absolutely, you can build full Android apps using only C++ without writing a single line of Java—no need to stress about being forced into Java development here. Let’s break down the practical ways to do this:

1. Use Android NDK's NativeActivity #

Android natively provides NativeActivity, a component that lets you use C++ as your app's entry point, completely skipping the Java layer. Here's the gist:

• Configure your AndroidManifest.xml to set the main activity to android.app.NativeActivity, and reference your compiled C++ shared library (e.g., libmain.so)
• Implement core lifecycle callbacks like ANativeActivity_onCreate in C++ to handle app startup, input events, and shutdown
• Render UI directly using EGL/OpenGL ES, or pair with lightweight graphics libraries to simplify UI code

2. Leverage Cross-Platform C++ Frameworks #

If you want to avoid dealing with low-level Android APIs directly, these frameworks let you write C++ code that compiles to Android apps seamlessly:

• SDL (Simple DirectMedia Layer): A lightweight multimedia library perfect for 2D/3D apps. It handles Android platform integration under the hood, so you can write pure C++ and package it as an APK without Java.
• Qt for Android: A full-featured UI framework with a rich set of C++ UI components. Its build tools generate Android packages automatically, and you won’t need to touch Java at all.
• Unreal Engine: For game development, Unreal uses C++ as its primary language. Exporting to Android is handled by the engine—you write game logic in C++ and let Unreal handle the platform-specific work.

3. Building & Packaging #

You don’t need Java for the build process either:

• Use ndk-build or CMake to write build scripts that compile your C++ code into Android-compatible shared libraries
• Android Studio supports pure C++ project creation, debugging, and one-click packaging into APKs—all without writing Java code

A quick note: You might need to tweak your AndroidManifest.xml for permissions or app metadata, but that’s just XML configuration, not Java code.

内容的提问来源于stack exchange，提问作者user11107827