退出全屏模式会使应用程序空白

时间：2018-08-28 11:07:43

标签： android webview fullscreen

当我在网络视图中退出全屏视频时，该应用程序将变为空白，仅显示背景。我很茫然，似乎无法解决我的错误，这完全没问题，直到我迷路了并且忘记了定期检查代码。有人可以帮助解决我的问题并描述我做了什么。我从未使用过stackOverFlow，因此感谢任何人的帮助。

Java 

superWebView = (VideoEnabledWebView) findViewById(R.id.mWebView);
    ViewGroup videoLayout = (ViewGroup) findViewById(R.id.videoLayout); // Your own view, read class comments
    webChromeClient = new VideoEnabledWebChromeClient(nonVideoLayout, videoLayout, superWebView) // See all available constructors...
    {

    };
    webChromeClient.setOnToggledFullscreen(new VideoEnabledWebChromeClient.ToggledFullscreenCallback()
    {
        @Override
        public void toggledFullscreen(boolean fullscreen)
        {
            // code to handle the full-screen change, showing and hiding
            if (fullscreen)
            {
                searchBar.setVisibility(View.GONE);
                backNav.setVisibility(View.GONE);
                forwardNav.setVisibility(View.GONE);
                refreshNav.setVisibility(View.GONE);
                homeNav.setVisibility(View.GONE);
                bottomNav.setVisibility(View.GONE);
                searchNav.setVisibility(View.GONE);
                WindowManager.LayoutParams attrs = getWindow().getAttributes();
                attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
                attrs.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
                getWindow().setAttributes(attrs);
                if (android.os.Build.VERSION.SDK_INT >= 14)
                {
                    getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
                }
            }
            else
            {
                searchBar.setVisibility(View.VISIBLE);
                superWebView.setVisibility(View.VISIBLE);
                WindowManager.LayoutParams attrs = getWindow().getAttributes();
                attrs.flags &= ~WindowManager.LayoutParams.FLAG_FULLSCREEN;
                attrs.flags &= ~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
                getWindow().setAttributes(attrs);
                if (android.os.Build.VERSION.SDK_INT >= 14)
                {
                    getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
                }
            }

        }
    });


    superWebView.setWebChromeClient(webChromeClient);
}

XML 

<android.support.v4.widget.DrawerLayout 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:id="@+id/mySwipeLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical"
tools:context=".MainActivity"
tools:openDrawer="start">

<RelativeLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

<LinearLayout
    android:id="@+id/nonVideoLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/browserlite_back"
    android:orientation="vertical">


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



</LinearLayout>

<RelativeLayout
    android:id="@+id/videoLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <!-- View that will be shown while the fullscreen video loads (maybe include a spinner and a "Loading..." message) -->

    <LinearLayout
        android:id="@+id/searchBar_Background"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ffffff"
        android:orientation="vertical">

        <EditText
            android:id="@+id/searchBar"
            android:layout_width="match_parent"
            android:layout_height="45dp"
            android:layout_gravity="left|center"
            android:layout_marginBottom="5dp"
            android:layout_marginEnd="10dp"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp"
            android:layout_marginStart="10dp"
            android:layout_marginTop="5dp"
            android:elevation="5dp"
            android:autoText="false"
            android:autofillHints="@android:string/autofill"
            android:background="@drawable/round_searchbar"
            android:defaultFocusHighlightEnabled="true"
            android:focusable="true"
            android:gravity="left|center"
            android:hint="Search or Enter URL"
            android:inputType="none|text|textAutoCorrect|textAutoComplete|textUri"
            android:linksClickable="true"
            android:longClickable="true"
            android:paddingEnd="5dp"
            android:paddingLeft="10dp"
            android:paddingRight="5dp"
            android:paddingStart="10dp"
            android:selectAllOnFocus="true"
            android:singleLine="true"
            android:soundEffectsEnabled="true"
            android:textColor="#656565"
            android:textSize="15dp"
            android:textIsSelectable="true" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/searchBar_Background"
        android:layout_gravity="center_horizontal|center_vertical"
        android:gravity="center_vertical|center_horizontal"
        android:orientation="horizontal">

        <Button
            android:id="@+id/buttonWeather"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:layout_marginBottom="10dp"
            android:layout_marginEnd="10dp"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp"
            android:layout_marginStart="10dp"
            android:layout_marginTop="10dp"
            android:elevation="5dp"
            android:background="@drawable/rounded_button"
            android:text="Weather" />

        <Button
            android:id="@+id/buttonNews"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:layout_marginBottom="10dp"
            android:layout_marginEnd="10dp"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp"
            android:layout_marginStart="10dp"
            android:layout_marginTop="10dp"
            android:elevation="5dp"
            android:background="@drawable/rounded_button"
            android:text="News" />

        <Button
            android:id="@+id/buttonDDG"
            android:layout_width="80dp"
            android:layout_height="80dp"
            android:layout_marginBottom="10dp"
            android:layout_marginEnd="10dp"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp"
            android:layout_marginStart="10dp"
            android:layout_marginTop="10dp"
            android:elevation="5dp"
            android:background="@drawable/rounded_button"
            android:text="DDG" />

    </LinearLayout>

    <com.okaybrowser.okaybrowserfastprivate.VideoEnabledWebView
        android:id="@+id/mWebView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@id/bottomNav"
        android:layout_below="@+id/searchBar_Background"
        android:layout_gravity="center"
        android:background="#ffffff"
        android:contextClickable="true">

    </com.okaybrowser.okaybrowserfastprivate.VideoEnabledWebView>

    <LinearLayout
        android:id="@+id/myLinearLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <ProgressBar
            android:id="@+id/myProgressBar"
            style="@style/Base.Widget.AppCompat.ProgressBar.Horizontal"
            android:layout_width="match_parent"
            android:background="#ff00fe"
            android:layout_height="2dp"
            android:layout_weight="1" />
    </LinearLayout>

    <View
        android:id="@+id/videoLoading"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:visibility="invisible" />

    <LinearLayout
        android:id="@+id/bottomNav"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:background="#ffffff"
        android:gravity="center_horizontal|center_vertical"
        android:orientation="horizontal">

        <Button
            android:id="@+id/backNav"
            android:layout_width="35dp"
            android:layout_height="38dp"
            android:layout_marginEnd="20dp"
            android:layout_marginRight="20dp"
            android:background="@drawable/ic_keyboard_arrow_left_black_24dp" />

        <Button
            android:id="@+id/forwardNav"
            android:layout_width="35dp"
            android:layout_height="38dp"
            android:layout_marginEnd="20dp"
            android:layout_marginLeft="20dp"
            android:layout_marginRight="20dp"
            android:layout_marginStart="20dp"
            android:background="@drawable/ic_keyboard_arrow_right_black_24dp" />

        <Button
            android:id="@+id/homeNav"
            android:layout_width="35dp"
            android:layout_height="38dp"
            android:layout_marginEnd="20dp"
            android:layout_marginLeft="20dp"
            android:layout_marginRight="20dp"
            android:layout_marginStart="20dp"
            android:background="@drawable/ic_home_grey_24dp" />

        <Button
            android:id="@+id/refreshNav"
            android:layout_width="35dp"
            android:layout_height="38dp"
            android:layout_marginEnd="20dp"
            android:layout_marginLeft="20dp"
            android:layout_marginRight="20dp"
            android:layout_marginStart="20dp"
            android:background="@drawable/ic_refresh_grey_24dp" />


        <Button
            android:id="@+id/searchNav"
            android:layout_width="35dp"
            android:layout_height="38dp"
            android:layout_marginLeft="20dp"
            android:layout_marginStart="20dp"
            android:background="@drawable/ic_search_grey_24dp" />

    </LinearLayout>


</RelativeLayout>

</RelativeLayout>

<android.support.design.widget.NavigationView
    android:id="@+id/nav_view"
    android:layout_width="56dp"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:background="#273238"
    app:itemIconTint="#ffffff"
    app:menu="@menu/drawer_menu">

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

2 个答案:

答案 0 :(得分：0)

尝试这个 

webChromeClient.setOnToggledFullscreen(new VideoEnabledWebChromeClient.ToggledFullscreenCallback()
{
    @Override
    public void toggledFullscreen(boolean fullscreen)
    {
        // code to handle the full-screen change, showing and hiding
        if (fullscreen)
        {
                searchBar.setVisibility(View.GONE);
                backNav.setVisibility(View.GONE);
                forwardNav.setVisibility(View.GONE);
                refreshNav.setVisibility(View.GONE);
                homeNav.setVisibility(View.GONE);
                bottomNav.setVisibility(View.GONE);
                searchNav.setVisibility(View.GONE);
                WindowManager.LayoutParams attrs = getWindow().getAttributes();
                attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
                attrs.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
                getWindow().setAttributes(attrs);

                if (android.os.Build.VERSION.SDK_INT >= 14)
                {
                    getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
                }
        }
        else
        {
                searchBar.setVisibility(View.VISIBLE);
                backNav.setVisibility(View.VISIBLE);
                forwardNav.setVisibility(View.VISIBLE);
                refreshNav.setVisibility(View.VISIBLE);
                homeNav.setVisibility(View.VISIBLE);
                bottomNav.setVisibility(View.VISIBLE);
                searchNav.setVisibility(View.VISIBLE);
                WindowManager.LayoutParams attrs = getWindow().getAttributes();
                attrs.flags &= ~WindowManager.LayoutParams.FLAG_FULLSCREEN;
                attrs.flags &= ~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
                getWindow().setAttributes(attrs);

                if (android.os.Build.VERSION.SDK_INT >= 14)
                {
                    getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
                }
        }

    }
});

答案 1 :(得分：0)

建议：

为什么不使用其他活动以全屏方式仅在WebView中播放视频。然后，在完成视频后，完成活动。通过这样做，您可以使一切顺利。您也不必担心可视性。

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