RN中的JS部分的页面组件最终是在原生这边生成一个RCTRootView类的实例，且RN是在view层做的页面生命周期管理。好像不适合以单页面的形式接入到项目中，所以RN能不能像WebView那样的方式来使用？组件渲染有delegate回调给native？并且可以通过url来请求对应RN页面资源文件并且加载RN页面？能不能提供自动重新渲染页面的方法给原生调用？....
实现思路
1.继承RCTRootView
2.数据通信
- 1.容器–>RN（RN页面要用的参数:如请求参数，埋点，自定义等等）
- 初始化RN页面
容器内部初始化RN页面的时候允许传一个字典类型的自定义参数，它会在组件里根据key-value生成一些默认的props。RN也就可以通过this.props[key]这种形式获取。
- 初始化RN页面
// iOS
IMYRNView *rootView = [[IMYRNView alloc] initWithModuleName:@"index.ios" bundleName:@"TestPage" initialProperties:@{@"arg":@"参数"} componentDelegate:self];
// RN
componentDidMount(){
alert('arg'+this.props.arg);
}
- 容器刷新RN页面方法
// iOS
- (void)reloadPage {
[self reloadPageWithProperties:nil];
}
- (void)reloadPageWithProperties:(NSDictionary *)params {
[self.bridge.eventDispatcher sendAppEventWithName:@"reloadPageEvent"
body:params];
}
//RN
componentDidMount(){
RNView.bridge_componentDidMount(){
/*
基础组件需要实现
Native手动刷新RN页面，监听事件名称，实现函数
*/
DeviceEventEmitter.addListener('bridge_reloadPage',this.reloadPage.bind(this));
}
}
reloadPage(args) {
alert(args.arg1);
}
- 2.RN->容器（桥接）
- 3.RN->RN（RN->容器->RN)
- 4.容器–>容器（直接传就行）
3.容器需要监听RN组件生命周期事件
// iOS
#pragma mark - RN生命周期回调
RCT_EXPORT_METHOD(bridge_componentWillMount)
{
[NSObject imy_asyncMainBlock:^{
IMYRNView *view = (IMYRNView *)[[UIViewController imy_currentViewControlloer] view];
if ([view.componentDelegate respondsToSelector:@selector(componentWillMount:)]) {
[view.componentDelegate componentWillMount:view];
}
}];
}
RCT_EXPORT_METHOD(bridge_componentDidMount)
{
[NSObject imy_asyncMainBlock:^{
IMYRNView *view = (IMYRNView *)[[UIViewController imy_currentViewControlloer] view];
if ([view.componentDelegate respondsToSelector:@selector(componentDidMount:)]) {
[view.componentDelegate componentDidMount:view];
}
}];
}
// RN
componentDidMount(){
RNView.bridge_componentDidMount(){
}
}
代码
IMYRNView.h
#import "RCTRootView.h"
#import "RCTBridgeModule.h"
#import "RCTLog.h"
@protocol RNViewComponentDelegate <NSObject>
@optional
- (void)componentWillMount:(RCTRootView *)rootView;
- (void)componentDidMount:(RCTRootView *)rootView;
- (void)rootView:(RCTRootView *)rootView componentWillReceiveProps:(id)nextProps;
- (BOOL)rootView:(RCTRootView *)rootView shouldComponentUpdateNextProps:(id)nextProps nextState:(id)nextState;
- (void)rootView:(RCTRootView *)rootView componentWillUpdateNextProps:(id)nextProps nextState:(id)nextState;
- (void)rootView:(RCTRootView *)rootView componentDidUpdateNextProps:(id)nextProps nextState:(id)nextState;
- (void)componentWillUnmount:(RCTRootView *)rootView;
@end
@interface IMYRNView : RCTRootView<RCTBridgeModule>
- (instancetype)initWithModuleName:(NSString *)moduleName;
- (instancetype)initWithModuleName:(NSString *)moduleName bundleName:(NSString *)bundleName;
- (instancetype)initWithModuleName:(NSString *)moduleName bundleName:(NSString *)bundleName initialProperties:(NSDictionary *)params;
- (instancetype)initWithModuleName:(NSString *)moduleName bundleName:(NSString *)bundleName initialProperties:(NSDictionary *)params componentDelegate:(id<RNViewComponentDelegate>)componentDelegate;
@property(nonatomic,weak) id<RNViewComponentDelegate> componentDelegate;
///刷新
- (void)reloadPage;
- (void)reloadPageWithProperties:(NSDictionary *)params;
@end
IMYRNViewController.h
#import <IMYPublic.h>
@class IMYRNView;
@interface IMYRNViewController : IMYPublicBaseViewController
@property(nonatomic,copy)NSString *navTitle;
@property(nonatomic,copy)NSString *bundleName;
@property(nonatomic,copy)NSString *moduleName;
@property(nonatomic,strong)NSDictionary *initialProperties;/**< RN要用的参数:请求参数，埋点，自定义... */
@property(nonatomic,assign)BOOL isNeedReloadPage;
@property(nonatomic,strong,readonly)IMYRNView *rnView;
@end
