//WXSDKEngine的init方法已经被弃用，weex的初始化需要使用下面这个initialize方法
public static void initialize(Application application,InitConfig config){
synchronized (mLock) {
//如果已经初始化过那么直接return
if (mIsInit) {
return;
}
long start = System.currentTimeMillis();
WXEnvironment.sSDKInitStart = start;
if(WXEnvironment.isApkDebugable()){
WXEnvironment.sLogLevel = LogLevel.DEBUG;
}else{
if(WXEnvironment.sApplication != null){
WXEnvironment.sLogLevel = LogLevel.WARN;
}else {
WXLogUtils.e(TAG,"WXEnvironment.sApplication is " + WXEnvironment.sApplication);
}
}
doInitInternal(application,config);
WXEnvironment.sSDKInitInvokeTime = System.currentTimeMillis()-start;
WXLogUtils.renderPerformanceLog("SDKInitInvokeTime", WXEnvironment.sSDKInitInvokeTime);
//监测weex表现的的一个检测器的初始化
WXPerformance.init();
mIsInit = true;
}
}
private static void doInitInternal(final Application application,final InitConfig config){
//这里给WXEnvironment中的application赋值，方便后续使用
WXEnvironment.sApplication = application;
if(application == null){//application为空的话报错
WXLogUtils.e(TAG, " doInitInternal application is null");
WXExceptionUtils.commitCriticalExceptionRT(null,
WXErrorCode.WX_KEY_EXCEPTION_SDK_INIT,
"doInitInternal",
WXErrorCode.WX_KEY_EXCEPTION_SDK_INIT.getErrorMsg() + "WXEnvironment sApplication is null",
null);
}
//weex环境初始化标识设置为false
WXEnvironment.JsFrameworkInit = false;
//通过单例模式获取一个WXBridgeManager的唯一实例，使用WXBridgeManager开启一个安全的线程初始化weex框架。
//开启安全线程的细节暂时不深究，这里主要看weex框架的初始化流程
WXBridgeManager.getInstance().post(new Runnable() {
@Override
public void run() {
//开始初始化时间
long start = System.currentTimeMillis();
//获取WXSDKManager实例
WXSDKManager sm = WXSDKManager.getInstance();
//使用sm监听weex框架初始化，我们可以通过WXSDKManager.registerStatisticsListener（）
//注册一个监听器
sm.onSDKEngineInitialize();
//设置weex框架配置项
if(config != null ) {
sm.setInitConfig(config);
}
//初始化so文件加载器，后两个参数分别为初始化时的加载器和监听器。
WXSoInstallMgrSdk.init(application,
sm.getIWXSoLoaderAdapter(),
sm.getWXStatisticsListener());
//加载so库文件，如不设置自定义的IWXSoLoaderAdapter，那么采用系统默认方式加载
boolean isSoInitSuccess = WXSoInstallMgrSdk.initSo(V8_SO_NAME, 1, config!=null?config.getUtAdapter():null);
if (!isSoInitSuccess) {//加载失败报错
WXExceptionUtils.commitCriticalExceptionRT(null,
WXErrorCode.WX_KEY_EXCEPTION_SDK_INIT,
"doInitInternal",
WXErrorCode.WX_KEY_EXCEPTION_SDK_INIT.getErrorMsg() + "isSoInit false",
null);
return;
}
//使用WXSDKManager初始化jsFramwork,就是讲weexSdk中assets下的js文件拷贝到缓存目录中，使用so的native方法执行
sm.initScriptsFramework(config!=null?config.getFramework():null);
//计算初始化所用时间
WXEnvironment.sSDKInitExecuteTime = System.currentTimeMillis() - start;
WXLogUtils.renderPerformanceLog("SDKInitExecuteTime", WXEnvironment.sSDKInitExecuteTime);
}
});
//注册weexSDK内置的一系列Component和Module
register();
}
public static synchronized boolean registerComponent(final String type, final IFComponentHolder holder, final Map<String, Object> componentInfo) throws WXException {
if (holder == null || TextUtils.isEmpty(type)) {
return false;
}
//execute task in js thread to make sure register order is same as the order invoke register method.
//在js线程执行这个注册组件的任务，以确保我们注册组件的顺序与调用注册方法的顺序一致。
WXBridgeManager.getInstance()
.post(new Runnable() {
@Override
public void run() {
try {
Map<String, Object> registerInfo = componentInfo;
if (registerInfo == null){
registerInfo = new HashMap<>();
}
//设置注册信息
registerInfo.put("type",type);
//holder是之前让大家留意的SimpleComponentHolder类
registerInfo.put("methods",holder.getMethods());
//生成原生组件映射
registerNativeComponent(type, holder);
//将组件注册信息传递到jsFramwork，生成js中解析vue中原生component是所需的Json映射
registerJSComponent(registerInfo);
//sComponentInfos是js解析需要使用的类，包含所有组件的注册信息
sComponentInfos.add(registerInfo);
} catch (WXException e) {
WXLogUtils.e("register component error:", e);
}
}
});
return true;
}
public static Pair<Map<String,Invoker>,Map<String,Invoker>> getMethods(Class clz){
Map<String, Invoker> methods = new HashMap<>();
Map<String, Invoker> mInvokers = new HashMap<>();
Annotation[] annotations;
Annotation anno;
try {
for (Method method : clz.getMethods()) {
try {
annotations = method.getDeclaredAnnotations();
for (int i = 0, annotationsCount = annotations.length;
i < annotationsCount; ++i) {
anno = annotations[i];
if(anno == null){
continue;
}
if (anno instanceof WXComponentProp) {
String name = ((WXComponentProp) anno).name();
methods.put(name, new MethodInvoker(method,true));
break;
}else if(anno instanceof JSMethod){
JSMethod methodAnno = (JSMethod)anno;
String name = methodAnno.alias();
if(JSMethod.NOT_SET.equals(name)){
name = method.getName();
}
mInvokers.put(name, new MethodInvoker(method,methodAnno.uiThread()));
break;
}
}
} catch (ArrayIndexOutOfBoundsException | IncompatibleClassChangeError e) {
//ignore: getDeclaredAnnotations may throw this
}
}
}catch (IndexOutOfBoundsException e){
e.printStackTrace();
//ignore: getMethods may throw this
}
return new Pair<>(methods,mInvokers);
}
//SimpleComponentHolder.java
@Override
public void loadIfNonLazy() {
//获取类中所有注解
Annotation[] annotations = mClz.getDeclaredAnnotations();
for (Annotation annotation :
annotations) {
if (annotation instanceof Component){
if(!((Component) annotation).lazyload() && mMethodInvokers == null){
//通过此方法获得组件类的方法和属性，并保存
generate();
}
return;
}
}
}
private synchronized void generate(){
if(WXEnvironment.isApkDebugable()) {
WXLogUtils.d(TAG, "Generate Component:" + mClz.getSimpleName());
}
//通过getMethods（）方法获取属性和方法信息
Pair<Map<String, Invoker>, Map<String, Invoker>> methodPair = getMethods(mClz);
//保存属性和方法信息到自身
mPropertyInvokers = methodPair.first;
mMethodInvokers = methodPair.second;
}
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