win7 x64
jdk1.8.0_11
adt-bundle-windows-x86_64-20140702
android-ndk-r10
打开eclipse；
打开菜单->File->New->Android Application；
设置工程名，sdk版本，注意：主题设置为 None，点击next；
Configure Project 是取消 Create activity 的复选框，点击next；
Configure the attributes of the icon set， 直接点击 next；
Select whether to create an activity, and if so, what kind of activity. 点击 finish即可；
工程便创建出来了
右键工程NativeTest->弹出菜单->Android Tools->Add Native Support...
Settings for generated native components for project.界面 直接点击Finish
将 android.mk 的内容补充完整：LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS)LOCAL_MODULE := NativeTestLOCAL_SRC_FILES := NativeTest.cppLOCAL_LDLIBS := -llog -landroidLOCAL_STATIC_LIBRARIES := android_native_app_glueinclude $(BUILD_SHARED_LIBRARY)$(call import-module,android/native_app_glue)
增加一个 Application.mk 文件（这一步可选），并写入：APP_ABI := x86APP_CPPFLAGS := --std=c++11NDK_TOOLCHAIN_VERSION := 4.8
1、android_main：这个函数类似于win32开发的WinMain函数2、app->onAppCmd = onAppCmd; app->onInputEvent = onInputEvent; 类似于win32中设置窗口的回掉函数3、 while ((ident=ALooper_pollAll(-1, NULL, &events, (void**)&source)) >= 0) { // Process this event. if (source != NULL) { source->process(app, source); } // Check if we are exiting. if (app->destroyRequested != 0) { return; } } 这一段类似于win32的消息循环4、为了方便大家粘贴，android_main 函数的代码如下：void android_main(struct android_app* app) { // Make sure glue isn't stripped. app_dummy(); app->onAppCmd = onAppCmd; app->onInputEvent = onInputEvent; while (1) { int ident; int events; struct android_poll_source* source; while ((ident=ALooper_pollAll(-1, NULL, &events, (void**)&source)) >= 0) { // Process this event. if (source != NULL) { source->process(app, source); } // Check if we are exiting. if (app->destroyRequested != 0) { return; } } }}
onAppCmd 描述的是真个activity的生命周期，类似于win32开发的消息处理回掉函数：static void onAppCmd(struct android_app* app, int32_t cmd) { switch (cmd) { case APP_CMD_SAVE_STATE: // The system has asked us to save our current state. Do so. __android_log_print(ANDROID_LOG_DEBUG, 'fuke', 'engine_handle_cmd APP_CMD_SAVE_STATE'); break; case APP_CMD_INIT_WINDOW: // The window is being shown, get it ready. __android_log_print(ANDROID_LOG_DEBUG, 'fuke', 'engine_handle_cmd APP_CMD_INIT_WINDOW'); break; case APP_CMD_TERM_WINDOW: __android_log_print(ANDROID_LOG_DEBUG, 'fuke', 'engine_handle_cmd APP_CMD_TERM_WINDOW'); break; case APP_CMD_GAINED_FOCUS: // When our app gains focus, we start monitoring the accelerometer. __android_log_print(ANDROID_LOG_DEBUG, 'fuke', 'engine_handle_cmd APP_CMD_GAINED_FOCUS'); 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. __android_log_print(ANDROID_LOG_DEBUG, 'fuke', 'engine_handle_cmd APP_CMD_LOST_FOCUS'); break; }}
onInputEvent 主要是用来触屏相关事件，也类似于win32开发的消息处理回掉函数，函数有两部分组成：1、检测多点触屏，并通过logcat打印出多点触屏的信息；2、控制屏幕颜色变化，每次松开手时颜色变化3、为方便大家粘贴，onInputEvent函数的代码记录如下：static int32_t onInputEvent(struct android_app* app, AInputEvent* event) { if (AInputEvent_getType(event) == AINPUT_EVENT_TYPE_MOTION) { int nNum = AMotionEvent_getPointerCount(event); char szTrace[1024] = {0}; sprintf (szTrace, 'engine_handle_input num=[%d]', nNum); for (int nIdx = 0; nIdx < nNum; nIdx++) { int nX = AMotionEvent_getX(event, 0); int nY = AMotionEvent_getY(event, 0); sprintf (strrchr(szTrace, 0), ' (%d %d)', nX, nY); } __android_log_print(ANDROID_LOG_DEBUG, 'colorspace', '%s', szTrace); if (AKeyEvent_getAction(event) != AKEY_EVENT_ACTION_UP) return 1; ANativeWindow_Buffer nativeWindow = {0}; int nRet = ANativeWindow_lock(app->pendingWindow, &nativeWindow, NULL); int nArea = nativeWindow.width * nativeWindow.height; unsigned long* pdwScreen = (unsigned long*)nativeWindow.bits; static int s_nClr = 0; unsigned long pdwClr[] = { 0x, 0x000000ff, 0x0000ffff, 0x0000ff00, 0x00ffff00, 0x00ff0000, 0x00ff00ff, 0x00ffffff}; s_nClr ++; if (s_nClr > sizeof(pdwClr) / sizeof(unsigned long)) s_nClr = 0; for (int nIdx = 0; nIdx < nArea; nIdx++) { pdwScreen[nIdx] = pdwClr[s_nClr]; } ANativeWindow_unlockAndPost(app->pendingWindow); return 1; } return 0;}
1、打开 AndroidManifest.xml2、打开 Application 分页3、增加一个 Activity如下所示：
1、选择右边的 Browse;2、取消 'Display classes from sources of ...' 前面的复选框;3、在搜索栏输入'na'，选中列出来的 'NativeActivity'4、点击OK效果如下：
1、选中 android.app.nativeActivity2、点击 add 3、选择 Meta Data 4、点击Ok
输入：android:name='android.app.lib_name' android:value='NativeTest'
1、选中 android.app.nativeActivity2、点击 add 3、选择 Intent Filter4、点击Ok
1、选中 Intent Filter2、点击 add 3、选择 Action4、点击Ok5、设置 android:name='android.intent.action.MAIN'
1、选中 Intent Filter2、点击 add 3、选择 Category4、点击Ok5、设置 android:name='android.intent.category.LAUNCHER'
启动模拟器，运行效果如下：
点击后效果：
这次整个程序完成
整个程序实现：1、android 下面的纯c/c++ 开发2、实现了多点触屏的功能3、实现了点击屏幕颜色的切换功能
方便他人亦是方便自己，如果觉得还行就点下下边的投票吧，这样可以帮助其他人更快的找到解决问题的方法；有疑问的也可留言哦， 谢谢！