【发布时间】：2016-07-16 16:23:44
【问题描述】：
到目前为止，使用下面的代码，我可以在向上滚动 web 视图时隐藏工具栏，并在向下滚动 web 视图时显示工具栏，但是通过下面的这个实现，我已经失去了 webview 本身的滚动行为
这是我的 app_bar.xml
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context=".Activity.MainActivity">
<!--android:fitsSystemWindows="true"-->
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="48dp"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="@style/AppTheme.PopupOverlay"/>
<android.support.design.widget.TabLayout
android:id="@+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="35dp"
app:tabGravity="fill"
app:tabMode="scrollable">
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
</android.support.design.widget.CoordinatorLayout>
这是我在片段中使用的 news.xml。我的问题是如果我删除 NestedScrollView 我可以滚动 webview 并执行滑动刷新功能但是当我添加嵌套视图时我可以上下滚动工具栏但是 webview 的滚动属性和滑动刷新是丢了
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<android.support.v4.widget.SwipeRefreshLayout
android:id="@+id/swipe1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:minHeight="60dp"
>
<WebView
android:id="@+id/website_detail_1"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
</WebView>
</android.support.v4.widget.SwipeRefreshLayout>
</android.support.v4.widget.NestedScrollView>
<ProgressBar
android:id="@+id/progressBar1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:indeterminate="true"
android:visibility="visible"/>
</RelativeLayout>
包含 webview 的片段
public class NewsFragment extends Fragment {
// private String url;
private WebView webView;
private ProgressBar progressBar1;
private SwipeRefreshLayout mSwipeRefreshLayout1;
public NewsFragment() {
// Required empty public constructor
}
public static NewsFragment newInstance(String webUrl) {
//set arguments
Bundle args = new Bundle();
args.putString("website", webUrl);
NewsFragment newsFragment = new NewsFragment();
newsFragment.setArguments(args);
return newsFragment;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.test, container, false);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
//get back arguments
final String url = this.getArguments().getString("website");
progressBar1 = (ProgressBar) view.findViewById(R.id.progressBar1);
webView = (WebView) view.findViewById(R.id.website_detail_1);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
progressBar1.setProgress(progress);
if (progress == 100) {
progressBar1.setVisibility(View.GONE);
if (mSwipeRefreshLayout1.isRefreshing()) {
mSwipeRefreshLayout1.setRefreshing(false);
}
} else {
progressBar1.setVisibility(View.VISIBLE);
}
}
});
webView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
webView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);
WebSettings webSettings = webView.getSettings();
// webView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
webView.getSettings().setAppCacheEnabled(true);
webSettings.setDomStorageEnabled(true);
if (!isNetworkAvailable()) { // loading offline
webView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);
}
webView.loadUrl(url);
mSwipeRefreshLayout1 = (SwipeRefreshLayout) view.findViewById(R.id.swipe1);
mSwipeRefreshLayout1.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
webView.loadUrl(url);
}
});
webView.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
webView.goBack();
return true;
}
return false;
}
});
}
private boolean isNetworkAvailable() {
ConnectivityManager connectivityManager = (ConnectivityManager) getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
// ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService( CONNECTIVITY_SERVICE );
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}
}
【问题讨论】：
标签： android android-layout webview android-coordinatorlayout