iOS 添加widget

1: 添加Today Extension

图1

选中Xcode->点击左上角的File->New->Target

图2

点击Todya Extension

图3

这就是添加Today Extension之后的项目目录

运行项目: 图4

2:绘制UI(纯代码):

删除MainInterface.storyboard, 并按照图5修改info.plist文件

图5

3: 实现展开, 折叠的效果:

在viewWillAppear中设置widget的mode为展开:

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    /** 设置右侧是否显示展开/折叠按钮 */
    if (@available(iOS 10.0, *)) {
        /** iOS10.0 之后NSExtensionContext中才添加了widgetLargestAvailableDisplayMode的属性 */
        self.extensionContext.widgetLargestAvailableDisplayMode = NCWidgetDisplayModeExpanded;
    }
    else {
        self.preferredContentSize = CGSizeMake(UIScreen.mainScreen.bounds.size.width, 110);
    }
}

/** 重写切换展开与折叠布局时的方法(iOS之后) */
- (void)widgetActiveDisplayModeDidChange:(NCWidgetDisplayMode)activeDisplayMode withMaximumSize:(CGSize)maxSize {
    //宽度是默认的, 设置也没用
    if (activeDisplayMode == NCWidgetDisplayModeCompact) {
        /** 设置折叠的高度 */
        self.preferredContentSize = CGSizeMake(0, 110);
    }
    else {
        /** 设置展开的高度 */
        self.preferredContentSize = CGSizeMake(0, 300);
    }
}

4: 调起app

- (void)callApp {
    [self.extensionContext openURL:[NSURL URLWithString:@"Schemes://xxx"]
                 completionHandler:^(BOOL success) {
        
    }];
}

可在AppDelegate中实现以下方法, 来处理传过来的action:

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options {
    if ([url.absoluteString hasPrefix:@"Schemes"]) {
        NSLog(@"处理action");
        return YES;
    }
}

5: 数据共享

参考:https://www.jianshu.com/p/9b3d06236d19
https://www.jianshu.com/p/ca3e11d7686c
https://www.jianshu.com/p/012319813522