小编sha*_*iao的帖子

在Handlebars中,是否有三元运算符？我不是说if else; 我的意思是a == true ? "a" : "b".

如何在chrome扩展中实现声音通知弹出窗口.

就像Checker Plus for Gmail一样

我有一个iOS Native View,它是一个带有地图视图和UIView的UIView.地图有一个名为'regionDidChangeAnimated'的事件,我想将事件发送到React Native.但reactTag不对.

- (UIView *)view
{
  CGRect screenRect = [[UIScreen mainScreen] bounds];

  UIView *frameView = [[UIView alloc] initWithFrame:screenRect];

  CGRect frameRect = frameView.bounds;

  MAMapView *mapView;
  mapView = [[MAMapView alloc] initWithFrame:frameRect];
  self.mapview = mapView;
  mapView.delegate = self;

  [frameView addSubview:mapView];

  RCTFixedPin* pin = [[RCTFixedPin alloc] initWithFrame:CGRectMake(0, 0, screenRect.size.width, 260)];
  pin.userInteractionEnabled = NO;
  [frameView addSubview:pin];

  return frameView;
}

- (void)mapView:(MAMapView *)mapView regionDidChangeAnimated:(BOOL)animated {

  if (self.dragging) {
    self.dragging = NO;
  }


  MACoordinateRegion region = mapView.region;
  NSDictionary *event = @{
                          ***@"target": ,***
                          @"region": @{ …

我有一个React Native的webview组件.webview应该支持输入类型是文件,所以我这样做:

WebView中的文件上载

并且webview实现ActivityEventListener并覆盖onActivityResult.But onActivityResult不起作用.

守则是

class RNWebView extends WebView implements ActivityEventListener {
      protected class GeoWebChromeClient extends WebChromeClient {
          public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {
           ...
            mActivity.startActivityForResult(chooserIntent, INPUT_FILE_REQUEST_CODE);
            return true;
          }
      }

    public RNWebView(ReactContext reactContext, Activity activity) {
        super(reactContext);
        // Add the listener for `onActivityResult`
        reactContext.addActivityEventListener(this);
        ...
     }

@Override
public void onActivityResult(final int requestCode, final int resultCode, final Intent intent) {
    // Your logic here
    Log.d("Tanck", "requestCode:" + requestCode + "----" + "resultCode:" + resultCode);
}

}

paths: {
          jquery: 'libs/jquery/jquery-min',
          underscore: 'libs/underscore/underscore-min',
          backbone: 'libs/backbone/backbone-optamd3-min',
          handlebars: 'libs/handlebars/handlebars',
          text: 'libs/require/text'
      }

   define([
      'jquery',
       'underscore',
       'backbone',
       'collections/todos',
       'views/todos',
       'text!templates/stats.html',
       'common',
       'handlebars'
  ], function ($, _, Backbone, Todos, TodoView, statsTemplate, Common, handlebars) {
   //handlebars is null
   console.log("handlebars is",handlebars);

})

除了把手,其他人可以成功加载.为什么以及如何使handlbars成功加载.谢谢