相关疑难解决方法(0)

我试图将YouTube Android API包装为React Native的UI组件.我已成功完成Android配置(获取onInitializationSuccess),但我无法弄清楚如何将YouTubePlayerView恢复到我的React Native应用程序.

根据文档,如果您无法扩展YouTubeBaseActivity,他们建议您使用YouTubePlayerFragment.由于Android上的React Native不使用基于XML的布局,因此我尝试以编程方式创建视图.但是,当我返回包装视图(我尝试作为FrameLayout,但不确定这是否是正确的选择)我创建它不会在应用程序上呈现任何内容.

我现在想要保持它非常简单,这里是必要的代码:

YouTubeManager.java

public class YouTubeManager extends SimpleViewManager<FrameLayout>  implements YouTubePlayer.OnInitializedListener {
// ...
@Override
    protected FrameLayout createViewInstance(ThemedReactContext reactContext) {
        this.reactContext = reactContext;

        FrameLayout view = new FrameLayout(reactContext);
        view.setId(View.generateViewId());


        FragmentManager fragmentManager = activity.getFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

        YouTubePlayerFragment fragment = new YouTubePlayerFragment();
        fragmentTransaction.add(view.getId(), fragment);

        fragmentTransaction.commit();

        fragment.initialize("SECRET_KEY", this);

        return view;
    }
// ... 
}

YouTube.js

class YouTube extends Component {
    render () {
        return <YouTubeAndroid {...this.props}/>;
    }
};

var iface = {
    name : 'YouTube',
    propTypes …

我已将动态生成的FrameLayout添加到react-native视图中.Framelayout正在出现.但是当我向视图添加一个片段时,什么也没有显示.

这是代码的一部分:

    public FrameLayout createViewInstance(ThemedReactContext context) {

            Fragment fragment = MapFragment.newInstance(mapKey);
            FrameLayout view = new FrameLayout(context);
            view.setWillNotDraw(false);

            LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
            view.setLayoutParams(lp);

            view.setId(View.generateViewId());

            view.setBackgroundColor(Color.parseColor("#1FFDDB"));

            FragmentActivity activity = MainActivity.getFragmentActivity();

            FragmentManager fragmentManager = activity.getSupportFragmentManager();

            fragmentManager.beginTransaction().remove(fragment).commit();
            fragmentManager.executePendingTransactions();

            FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

            fragmentTransaction.add(0, fragment);

            fragmentTransaction.show(fragment);
            fragmentTransaction.attach(fragment);
            fragmentTransaction.commit();
            fragmentManager.executePendingTransactions();
            return view;
        }

当我向视图添加TextView时,它显示:

// add a textfield to the view
TextView textView1 = new TextView(context);
textView1.setText("Android");
textView1.setTextSize(30);
textView1.setGravity(Gravity.CENTER);

view.setVisibility(View.VISIBLE);

view.addView(textView1);

所以Fragment存在问题.任何想法为什么片段没有出现？