iOS的Extension Widget开发

1 、初始化Today Extension项目

• 新建项目

• 布局方式

storeyboard布局

MainInterface.storeybord

纯代码编写

需要配置info.plist的俩项参数移除NSExtensionMainStoryboard键，并添加NSExtensionPrincipalClass键，使用view controller的名字作为值。

• 折叠功能

  - (void)viewWillAppear:(BOOL)animated { 
              [super viewWillAppear:animated];
              self.extensionContext.widgetLargestAvailableDisplayMode = 
      NCWidgetDisplayModeExpanded;
      }

• 隐藏Today Extension

  NCWidgetController *widgetController = [NCWidgetController widgetController];
  [widgetController setHasContent:NO forWidgetWithBundleIdentifier:@"扩展的id"];

• NCWidgetProviding代理

折叠代理

- (void)widgetActiveDisplayModeDidChange:(NCWidgetDisplayMode)activeDisplayMode withMaximumSize:(CGSize)maxSize {
if (activeDisplayMode == NCWidgetDisplayModeCompact){ 
self.preferredContentSize = CGSizeMake([UIScreen mainScreen].bounds.size.width, 110); 
} 
else { 
self.preferredContentSize = CGSizeMake([UIScreen mainScreen].bounds.size.width, 300); 
}
}

缩进

- (UIEdgeInsets)widgetMarginInsetsForProposedMarginInsets: (UIEdgeInsets)defaultMarginInsets {
return UIEdgeInsetsZero;
}

刷新Today Extension页面

- (void)widgetPerformUpdateWithCompletionHandler:(void (^)(NCUpdateResult))completionHandler {
// Perform any setup necessary in order to update the view.
// If an error is encountered, use NCUpdateResultFailed
// If there's no update required, use NCUpdateResultNoData
// If there's an update, use NCUpdateResultNewData
completionHandler(NCUpdateResultNewData);
}

2 、 与APP交互

• 跳转APP

APP设置URL Schemes

Today Extension实现跳转

- (void)jumpHomeAppEvents {
    NSString *schemeString = @"demo://";
    [self.extensionContext openURL:[NSURL URLWithString:schemeString] completionHandler:^(BOOL success) {
    }];
}

3 、 与APP共享数据

• 创建APPGroups

登录appdeveloper网站创建APPGroups

Xcode设置APPGroups

APP存储数据

- (void)saveDataByNSUserDefaults{
    NSUserDefaults* userDefault = [[NSUserDefaults alloc] initWithSuiteName:@"group.listennba.appGroup"];
    [userDefault setValue:@"你好，通知栏扩展" forKey:@"haha"];
}

Today Extension读取数据

- (void)readDataFromNSUserDefaults{
    NSUserDefaults * userDefault = [[NSUserDefaults alloc] initWithSuiteName:@"group.listennba.appGroup"];
    NSLog(@"读取出的数据为：%@",[myDefaults objectForKey:@"haha"]);
}

实例