最新首发Eclipse+CDT+android-ndk写纯c++安卓应用（附openGL Es）

时间：2014-07-10 22:28:25 阅读：409 评论：0 收藏：0 [点我收藏+]

首先下载eclipse和cdt，我的版本号依次是:Version: Indigo Service Release 2和Version: 1.0.0.201202111925，再下载windows的ndk，我使用的是android-ndk-r9d

什么cygwin这等东西，太恶心了，下载慢，大的要命！复杂，今天给一个最爽的编译教程。

前面的cdt插件怎么这里pass，网上教程很多的。直接配置。。。

启动eclipse，然后点Windows-Prefrences-C/C++-Build-Envionment，添加以下路径

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然后创建一个android工程，把代码全部删除，资源全部删除，AndroidManifest.xml内容如下

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.native_activity"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="9"
        tools:ignore="UsesMinSdkAttributes" />

    <application
        android:hasCode="false"
        android:label="纯CPP应用"
        tools:ignore="AllowBackup,MissingApplicationIcon" >
        <activity
            android:name="android.app.NativeActivity"
            android:configChanges="orientation|keyboardHidden" >

            <!-- Tell NativeActivity the name of or .so -->
            <meta-data
                android:name="android.app.lib_name"
                android:value="native-activity" />

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

然后创建jni目录，里面放三个文件，依次是Android.mk

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE    := native-activity
LOCAL_SRC_FILES := main.cpp
LOCAL_LDLIBS    := -llog -landroid -lEGL -lGLESv1_CM
LOCAL_STATIC_LIBRARIES := android_native_app_glue

include $(BUILD_SHARED_LIBRARY)

$(call import-module,android/native_app_glue)

Application.mk

APP_PLATFORM := android-14

main.cpp

#include <jni.h>
#include <errno.h>
#include <EGL/egl.h>
#include <GLES/gl.h>
#include <string.h>
#include <android/sensor.h>
#include <android/log.h>
#include <android_native_app_glue.h>

#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "native-activity", __VA_ARGS__))
#define LOGW(...) ((void)__android_log_print(ANDROID_LOG_WARN, "native-activity", __VA_ARGS__))

/**
 * Our saved state data.
 */
struct saved_state {
	float angle;
	int32_t x;
	int32_t y;
};

/**
 * Shared state for our app.
 */
struct engine {
	struct android_app* app;

	ASensorManager* sensorManager;
	const ASensor* accelerometerSensor;
	ASensorEventQueue* sensorEventQueue;

	int animating;
	EGLDisplay display;
	EGLSurface surface;
	EGLContext context;
	int32_t width;
	int32_t height;
	struct saved_state state;
};

/**
 * Initialize an EGL context for the current display.
 */
static int engine_init_display(struct engine* engine) {
	// initialize OpenGL ES and EGL

	/*
	 * Here specify the attributes of the desired configuration.
	 * Below, we select an EGLConfig with at least 8 bits per color
	 * component compatible with on-screen windows
	 */
	const EGLint attribs[] = { EGL_SURFACE_TYPE, EGL_WINDOW_BIT, EGL_BLUE_SIZE,
			8, EGL_GREEN_SIZE, 8, EGL_RED_SIZE, 8, EGL_NONE };
	EGLint w, h, dummy, format;
	EGLint numConfigs;
	EGLConfig config;
	EGLSurface surface;
	EGLContext context;

	EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);

	eglInitialize(display, 0, 0);

	/* Here, the application chooses the configuration it desires. In this
	 * sample, we have a very simplified selection process, where we pick
	 * the first EGLConfig that matches our criteria */
	eglChooseConfig(display, attribs, &config, 1, &numConfigs);

	/* EGL_NATIVE_VISUAL_ID is an attribute of the EGLConfig that is
	 * guaranteed to be accepted by ANativeWindow_setBuffersGeometry().
	 * As soon as we picked a EGLConfig, we can safely reconfigure the
	 * ANativeWindow buffers to match, using EGL_NATIVE_VISUAL_ID. */
	eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);

	ANativeWindow_setBuffersGeometry(engine->app->window, 0, 0, format);

	surface = eglCreateWindowSurface(display, config, engine->app->window,
			NULL);
	context = eglCreateContext(display, config, NULL, NULL);

	if (eglMakeCurrent(display, surface, surface, context) == EGL_FALSE) {
		LOGW("Unable to eglMakeCurrent");
		return -1;
	}

	eglQuerySurface(display, surface, EGL_WIDTH, &w);
	eglQuerySurface(display, surface, EGL_HEIGHT, &h);

	engine->display = display;
	engine->context = context;
	engine->surface = surface;
	engine->width = w;
	engine->height = h;
	engine->state.angle = 0;

	// Initialize GL state.
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
	glEnable(GL_CULL_FACE);
	glShadeModel(GL_SMOOTH);
	glDisable(GL_DEPTH_TEST);

	return 0;
}

/**
 * Just the current frame in the display.
 */
static void engine_draw_frame(struct engine* engine) {
	if (engine->display == NULL) {
		// No display.
		return;
	}

	// Just fill the screen with a color.
	glClearColor(((float) engine->state.x) / engine->width, engine->state.angle,
			((float) engine->state.y) / engine->height, 1);
	glClear(GL_COLOR_BUFFER_BIT);

	eglSwapBuffers(engine->display, engine->surface);
}

/**
 * Tear down the EGL context currently associated with the display.
 */
static void engine_term_display(struct engine* engine) {
	if (engine->display != EGL_NO_DISPLAY) {
		eglMakeCurrent(engine->display, EGL_NO_SURFACE, EGL_NO_SURFACE,
				EGL_NO_CONTEXT);
		if (engine->context != EGL_NO_CONTEXT) {
			eglDestroyContext(engine->display, engine->context);
		}
		if (engine->surface != EGL_NO_SURFACE) {
			eglDestroySurface(engine->display, engine->surface);
		}
		eglTerminate(engine->display);
	}
	engine->animating = 0;
	engine->display = EGL_NO_DISPLAY;
	engine->context = EGL_NO_CONTEXT;
	engine->surface = EGL_NO_SURFACE;
}

/**
 * Process the next input event.
 */
static int32_t engine_handle_input(struct android_app* app,
		AInputEvent* event) {
	struct engine* engine = (struct engine*) app->userData;
	if (AInputEvent_getType(event) == AINPUT_EVENT_TYPE_MOTION) {
		engine->animating = 1;
		engine->state.x = AMotionEvent_getX(event, 0);
		engine->state.y = AMotionEvent_getY(event, 0);
		return 1;
	}
	return 0;
}

/**
 * Process the next main command.
 */
static void engine_handle_cmd(struct android_app* app, int32_t cmd) {
	struct engine* engine = (struct engine*) app->userData;
	switch (cmd) {
	case APP_CMD_SAVE_STATE:
		// The system has asked us to save our current state.  Do so.
		engine->app->savedState = malloc((size_t)sizeof(struct saved_state));
		*((struct saved_state*) engine->app->savedState) = engine->state;
		engine->app->savedStateSize = sizeof(struct saved_state);
		break;
	case APP_CMD_INIT_WINDOW:
		// The window is being shown, get it ready.
		if (engine->app->window != NULL) {
			engine_init_display(engine);
			engine_draw_frame(engine);
		}
		break;
	case APP_CMD_TERM_WINDOW:
		// The window is being hidden or closed, clean it up.
		engine_term_display(engine);
		break;
	case APP_CMD_GAINED_FOCUS:
		// When our app gains focus, we start monitoring the accelerometer.
		if (engine->accelerometerSensor != NULL) {
			ASensorEventQueue_enableSensor(engine->sensorEventQueue,
					engine->accelerometerSensor);
			// We'd like to get 60 events per second (in us).
			ASensorEventQueue_setEventRate(engine->sensorEventQueue,
					engine->accelerometerSensor, (1000L / 60) * 1000);
		}
		break;
	case APP_CMD_LOST_FOCUS:
		// When our app loses focus, we stop monitoring the accelerometer.
		// This is to avoid consuming battery while not being used.
		if (engine->accelerometerSensor != NULL) {
			ASensorEventQueue_disableSensor(engine->sensorEventQueue,
					engine->accelerometerSensor);
		}
		// Also stop animating.
		engine->animating = 0;
		engine_draw_frame(engine);
		break;
	}
}

/**
 * This is the main entry point of a native application that is using
 * android_native_app_glue.  It runs in its own thread, with its own
 * event loop for receiving input events and doing other things.
 */
void android_main(struct android_app* state) {
	struct engine engine = {0};
	// Make sure glue isn't stripped.
	app_dummy();
	state->userData = &engine;
	state->onAppCmd = engine_handle_cmd;
	state->onInputEvent = engine_handle_input;
	engine.app = state;

	// Prepare to monitor accelerometer
	engine.sensorManager = ASensorManager_getInstance();
	engine.accelerometerSensor = ASensorManager_getDefaultSensor(
			engine.sensorManager, ASENSOR_TYPE_ACCELEROMETER);
	engine.sensorEventQueue = ASensorManager_createEventQueue(
			engine.sensorManager, state->looper, LOOPER_ID_USER, NULL, NULL);

	if (state->savedState != NULL) {
		// We are starting with a previous saved state; restore from it.
		engine.state = *(struct saved_state*) state->savedState;
	}

	// loop waiting for stuff to do.

	while (true) {
		// Read all pending events.
		int ident;
		int events;
		struct android_poll_source* source;

		// If not animating, we will block forever waiting for events.
		// If animating, we loop until all events are read, then continue
		// to draw the next frame of animation.
		while ((ident = ALooper_pollAll(engine.animating ? 0 : -1, NULL,
				&events, (void**) &source)) >= 0) {

			// Process this event.
			if (source != NULL) {
				source->process(state, source);
			}

			// If a sensor has data, process it now.
			if (ident == LOOPER_ID_USER) {
				if (engine.accelerometerSensor != NULL) {
					ASensorEvent event;
					while (ASensorEventQueue_getEvents(engine.sensorEventQueue,
							&event, 1) > 0) {
						LOGI("accelerometer: x=%f y=%f z=%f", event.acceleration.x, event.acceleration.y, event.acceleration.z);
					}
				}
			}

			// Check if we are exiting.
			if (state->destroyRequested != 0) {
				engine_term_display(&engine);
				return;
			}
		}

		if (engine.animating) {
			// Done with events; draw next animation frame.
			engine.state.angle += .01f;
			if (engine.state.angle > 1) {
				engine.state.angle = 0;
			}
			engine_draw_frame(&engine);
		}
	}
}

创建完成收工，然后创建另外一个工程。路径必须是刚才创建工程的jni目录，名字随便，重点看图

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