在Android中将webView添加到Firebase

我想在Firebase中添加webView，这样，如果我必须更改该webView的网页URL，我只需在Firebase数据库中添加一个新的URL，它就会相应地更改webView

我到处都搜索过，但没有得到有用的答案，firebase有可能这样做吗

更新：

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实际上，我正在尝试构建一个新闻应用程序，用户可以点击新闻的web链接，它会将他们带到应用程序内web浏览器的相应网页，我不认为远程配置在这方面会有所帮助

我正在使用Android Studio

FirebaseJava类文件

public class webViewNews extends AppCompatActivity {
    private RecyclerView webRecycle;
    private DatabaseReference mDatabaseReference;
    private WebView webviewthis;


    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.webview_page);
        mDatabaseReference = FirebaseDatabase.getInstance().getReference().child("play");
        webviewthis = (WebView) findViewById(R.id.webView_news);
        webRecycle = (RecyclerView) findViewById(R.id.webViewList);
        webviewthis.getSettings().setJavaScriptEnabled(true);
        webviewthis.getSettings().setLoadsImagesAutomatically(true);
        webviewthis.loadUrl(mDatabaseReference.toString());
    }
    @Override
    protected void onStart() {
        super.onStart();
        FirebaseRecyclerAdapter<post, webViewHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<post, webViewHolder>(
                post.class,
                R.layout.webview_card,
                webViewHolder.class,
                mDatabaseReference

        ) {
            @Override
            protected void populateViewHolder(webViewHolder viewHolder, post model, int position) {
                viewHolder.setWebViewPost( model.getWebViewPost());
            }
        };
        webRecycle.setAdapter(firebaseRecyclerAdapter);

    }

    public static class webViewHolder extends RecyclerViewPager.ViewHolder {

        View mView;

        public webViewHolder(View itemView) {
            super(itemView);
            mView = itemView;
        }

        public void setWebViewPost( final String webViewPost) {
            WebView WebViewPost = (WebView)mView.findViewById(R.id.webView_news);
            WebViewPost.loadUrl(webViewPost);
        }
    }
}

事故报告

 java.lang.RuntimeException: Unable to start activity ComponentInfo{hello.yellow/hello.yellow.webViewNews}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.webkit.WebSettings android.webkit.WebView.getSettings()' on a null object reference
                                                                                at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
                                                                                at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
                                                                                at android.app.ActivityThread.-wrap12(ActivityThread.java)
                                                                                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
                                                                                at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                                at android.os.Looper.loop(Looper.java:154)
                                                                                at android.app.ActivityThread.main(ActivityThread.java:6077)
                                                                                at java.lang.reflect.Method.invoke(Native Method)
                                                                                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
                                                                                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
                                                                             Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.webkit.WebSettings android.webkit.WebView.getSettings()' on a null object reference
                                                                                at hello.yellow.webViewNews.onCreate(webViewNews.java:29)
                                                                                at android.app.Activity.performCreate(Activity.java:6662)
                                                                                at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
                                                                                at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
                                                                                at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707) 
                                                                                at android.app.ActivityThread.-wrap12(ActivityThread.java) 
                                                                                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460) 
                                                                                at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                                at android.os.Looper.loop(Looper.java:154) 
                                                                                at android.app.ActivityThread.main(ActivityThread.java:6077) 
                                                                                at java.lang.reflect.Method.invoke(Native Method) 

---

对。您可以通过在firebase控制台中配置远程配置来使用它

---

有关更多信息，请查看此链接

事实上，我正在尝试构建一个新闻应用程序，用户可以单击新闻的web链接，它会将他们带到应用程序内web浏览器的相应网页，我认为远程配置对此没有帮助。是的，这是可能的。你在哪一个具体步骤上被卡住了？添加web视图时遇到问题吗？你在阅读Firebase时有问题吗？还是说这些已经可以用了，是不是粘在一起的问题？@FrankvanPuffelen我在阅读Firebase并粘在一起时遇到了麻烦，我想更改Firebase控制台的URL。你能帮我解决这个问题吗？这个问题太广泛了：这真的只是一个要求。展示你已经尝试过的东西和你的困境。如果你以a的形式这样做（阅读链接，它非常有用），你很可能会得到帮助。@FrankvanPuffelen很抱歉最近的帖子，我已经添加了Firebase Implementation和RecyclerAdapter类的类文件，你现在能帮我实现webView吗？你共享的代码的具体问题是什么？当您在调试器中单步执行它时，代码的哪一部分没有执行您期望它执行的操作？

 java.lang.RuntimeException: Unable to start activity ComponentInfo{hello.yellow/hello.yellow.webViewNews}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.webkit.WebSettings android.webkit.WebView.getSettings()' on a null object reference
                                                                                at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
                                                                                at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
                                                                                at android.app.ActivityThread.-wrap12(ActivityThread.java)
                                                                                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
                                                                                at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                                at android.os.Looper.loop(Looper.java:154)
                                                                                at android.app.ActivityThread.main(ActivityThread.java:6077)
                                                                                at java.lang.reflect.Method.invoke(Native Method)
                                                                                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
                                                                                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
                                                                             Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.webkit.WebSettings android.webkit.WebView.getSettings()' on a null object reference
                                                                                at hello.yellow.webViewNews.onCreate(webViewNews.java:29)
                                                                                at android.app.Activity.performCreate(Activity.java:6662)
                                                                                at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
                                                                                at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
                                                                                at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707) 
                                                                                at android.app.ActivityThread.-wrap12(ActivityThread.java) 
                                                                                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460) 
                                                                                at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                                at android.os.Looper.loop(Looper.java:154) 
                                                                                at android.app.ActivityThread.main(ActivityThread.java:6077) 
                                                                                at java.lang.reflect.Method.invoke(Native Method)