Question

我在WebView应用程序中工作。在我的最后一次更改中，我在webview中向下滚动时添加了一个隐藏应用栏的功能。很好!!! 但我注意到了一个问题。我会尝试解释。让我们来一个新闻网站，我打开最新消息。最近的新闻是在页面的开头，最后的新闻接近页面的末尾，所以我打开最后的新闻，我的webview加载了网址。加载网址时，我的网页视图位于网站的末尾，而不是开头。它是在我添加了我的＆＃34; webview＆＃34;在＆＃34; NestedScrollView＆＃34;内部。看起来NestedScrollView正在保存我的位置，它影响了我在网页中的位置。如何解决这个问题？

编辑：我的webview在Framelayout中加载，我的webview是一个片段。

WebView布局

<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:showIn="@layout/app_bar_main">


        <FrameLayout
            android:id="@+id/content"
            android:layout_width="match_parent"
            android:layout_height="match_parent"></FrameLayout>

</android.support.design.widget.CoordinatorLayout>

的FrameLayout

<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.design.widget.AppBarLayout
    android:layout_height="wrap_content"
    android:layout_width="match_parent"
    android:theme="@style/AppTheme.AppBarOverlay">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|enterAlways"
        app:popupTheme="@style/AppTheme.PopupOverlay" />

</android.support.design.widget.AppBarLayout>

<include layout="@layout/content_main"
    android:id="@+id/include" />


<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    android:layout_margin="@dimen/fab_margin"
    android:src="@drawable/face"
    android:scaleType="center"/>

App_Bar_Main

public class InicioPagina extends Fragment {

private ProgressBar prg;

SwipeRefreshLayout mySwipeRefreshLayout;

NestedScrollView NestedScrollView;

public WebView myWebView;

public static InicioPagina newInstance() {
    InicioPagina fragment = new InicioPagina();
    return fragment;
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.iniciopagina, container, false);
    prg = (ProgressBar)rootView.findViewById(R.id.progressBar2);
    NestedScrollView = (NestedScrollView) rootView.findViewById(R.id.nested_scroll_view);
    mySwipeRefreshLayout = (SwipeRefreshLayout) rootView.findViewById(R.id.swipelayout);
    myWebView = (WebView) rootView.findViewById(R.id.inicio_pagina);
    myWebView.loadUrl("http://google.com.br/");

    //*Ativar JavaScript
    WebSettings webSettings = myWebView.getSettings();
    webSettings.setJavaScriptEnabled(true);

    //*Forçar links para abrir no WebView ao invés do navegador
    myWebView.setWebViewClient(new WebViewClient());
    NestedScrollView.scrollTo(0, 0);


    myWebView.setVerticalScrollBarEnabled(false);

    mySwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            myWebView.reload();
            mySwipeRefreshLayout.setRefreshing(false);
        }
    });

    myWebView.setOnKeyListener(new View.OnKeyListener()
    {
        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event)
        {
            if(event.getAction() == KeyEvent.ACTION_DOWN)
            {
                WebView webView = (WebView) v;

                switch(keyCode)
                {
                    case KeyEvent.KEYCODE_BACK:
                        if(webView.canGoBack())
                        {
                            webView.goBack();
                            return true;
                        }
                        break;
                }
            }

            return false;
        }
    });

    return rootView;
}

public class WebViewClient extends android.webkit.WebViewClient{
    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
        prg.setVisibility(View.VISIBLE);
        super.onPageStarted(view, url, favicon);
    }
    @Override
    public void onPageFinished(WebView view, String url) {
        prg.setVisibility(View.GONE);

        super.onPageFinished(view, url);
    }
}

编辑2：WebView片段

NOTE

Answer 1

1）为id

制作NestedScrollView

 <android.support.v4.widget.NestedScrollView 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/nested_scroll_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="fill_vertical">

2）创建NestedScrollView对象
3）加载新URL时，将
nestedScrollView对象的scroll属性设置为0,0。

nestedScrollViewObj.scrollTo(0, 0);

在页面顶部加载webview

1 个答案: