WebView支持H5全屏播放

因为公司用的app没有用到webView去展示页面，然后一天一个朋友问我webView中怎么让h5页面的视频点击全屏的时候播放，当时还真的懵逼了。后来在网上查资料，还是找到不错的文章。
首先支持原创：http://www.jianshu.com/p/2dd60e6bd798

webView全屏播放视频的步骤：

1、启动硬件加速

2、webView控制所在的XML文件内容

3、Activity中初始化webView

4、自定义WebChromeClient类

5、自定义WebViewClient类

6、在Acitivity中复写onConfigurationChanged方法

7、Activity中声明周期内webView的操作

图直接拿过来用了，因为我也是用他的这个资源的

Paste_Image.png

1、启动硬件加速

在AndroidManifest.xml中声明使用HardwareAccelerate，请测没有开启只有声音没有画面（在application和activity都声明了）。以及配置configChanges,在横屏情况下不设置会导致activity销毁重新创建，记得添加权限。差点忘了

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:name=".base.MyApplication"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:hardwareAccelerated ="true"
        android:theme="@style/AppTheme">

        <activity android:name=".Activity.ScreenWebActivity"
            android:configChanges="orientation|screenSize|keyboardHidden"
            android:hardwareAccelerated="true"
            android:theme="@style/AppTheme.NoActionBar"></activity>

</application>

这里主题也贴出来吧，application的主题是默认的就好了

activity的主题

<style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>

3、在activity中初始化webView

注意：去掉标题，否则可能无法全屏

activity_screen_webview

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:id="@+id/mFrameLayout">

    <WebView
        android:id="@+id/webView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20sp" />

</FrameLayout>

初始化webView

private FrameLayout mFrameLayout;
    private WebView mWebView;
    private InsideWebChromeClient mInsideWebChromeClient;
    //需要加载的h5页面url地址
    private String URL = "http://m.tv.sohu.com/20140508/n399272261.shtml";

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_screen_webview);
        mFrameLayout = (FrameLayout) findViewById(R.id.mFrameLayout);
        mWebView = (WebView) findViewById(R.id.webView);
        initWebView();
        mWebView.loadUrl(URL);
    }

    private void initWebView() {
        WebSettings settings = mWebView.getSettings();
        settings.setJavaScriptEnabled(true);
        settings.setJavaScriptCanOpenWindowsAutomatically(true);
        settings.setPluginState(WebSettings.PluginState.ON);
        //settings.setPluginsEnabled(true);
        settings.setAllowFileAccess(true);
        settings.setLoadWithOverviewMode(true);
        settings.setUseWideViewPort(true);
        settings.setCacheMode(WebSettings.LOAD_NO_CACHE);
        settings.setCacheMode(WebSettings.LOAD_DEFAULT);
        mInsideWebChromeClient = new InsideWebChromeClient();
        InsideWebViewClient mInsideWebViewClient = new InsideWebViewClient();
        //javascriptInterface = new JavascriptInterface();
        //mWebView.addJavascriptInterface(javascriptInterface, "java2js_laole918");
        mWebView.setWebChromeClient(mInsideWebChromeClient);
        mWebView.setWebViewClient(mInsideWebViewClient);
    }

自定义webChromeClient类

思路：在onShowCustomView方法中，将获取到的view放入到当前activity的最上方，在onHideCustomerView中，将之前的View隐藏或者删除，将原来被覆盖的webView放回来，并播放结束。

private class InsideWebChromeClient extends WebChromeClient {
        private View mCustomView;
        private CustomViewCallback mCustomViewCallback;

        @Override
        public void onShowCustomView(View view, CustomViewCallback callback) {
            super.onShowCustomView(view, callback);
            if (mCustomView != null) {
                callback.onCustomViewHidden();
                return;
            }
            mCustomView = view;
            mFrameLayout.addView(mCustomView);
            mCustomViewCallback = callback;
            mWebView.setVisibility(View.GONE);
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        }

        public void onHideCustomView() {
            mWebView.setVisibility(View.VISIBLE);
            if (mCustomView == null) {
                return;
            }
            mCustomView.setVisibility(View.GONE);
            mFrameLayout.removeView(mCustomView);
            mCustomViewCallback.onCustomViewHidden();
            mCustomView = null;
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            super.onHideCustomView();
        }
    }

5、自定义webViewClient类

重写webViewClient在onPageFinished()方法中可以注入js语句。

private class InsideWebViewClient extends WebViewClient {

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
        }

    }

6、在activity中复写onConfigurationChanged（）方法

 @Override
    public void onConfigurationChanged(Configuration config) {
        super.onConfigurationChanged(config);
        switch (config.orientation) {
            case Configuration.ORIENTATION_LANDSCAPE:
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
                getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
                break;
            case Configuration.ORIENTATION_PORTRAIT:
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
                getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
                break;
        }
    }

7、在Activity中声明周期内的webView操作

@Override
public void onPause() {
    super.onPause();
    mWebView.onPause();
}

@Override
public void onResume() {
    super.onResume();
    mWebView.onResume();
}

@Override
public void onBackPressed() {
    if (mWebView.canGoBack()) {
        mWebView.goBack();
        return;
    }
    super.onBackPressed();
}

@Override
public void onDestroy() {
    mWebView.destroy();
    super.onDestroy();
}

完整的activity

screenWebActivity

public class ScreenWebActivity extends AppCompatActivity {

    private FrameLayout mFrameLayout;
    private WebView mWebView;
    private InsideWebChromeClient mInsideWebChromeClient;
    //需要加载的h5页面url地址
    private String URL = "http://m.tv.sohu.com/20140508/n399272261.shtml";

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
        WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_screen_webview);
        mFrameLayout = (FrameLayout) findViewById(R.id.mFrameLayout);
        mWebView = (WebView) findViewById(R.id.webView);
        initWebView();
        mWebView.loadUrl(URL);
    }

    private void initWebView() {
        WebSettings settings = mWebView.getSettings();
        settings.setJavaScriptEnabled(true);
        settings.setJavaScriptCanOpenWindowsAutomatically(true);
        settings.setPluginState(WebSettings.PluginState.ON);
        //settings.setPluginsEnabled(true);
        settings.setAllowFileAccess(true);
        settings.setLoadWithOverviewMode(true);
        settings.setUseWideViewPort(true);
        settings.setCacheMode(WebSettings.LOAD_NO_CACHE);
        settings.setCacheMode(WebSettings.LOAD_DEFAULT);
        mInsideWebChromeClient = new InsideWebChromeClient();
        InsideWebViewClient mInsideWebViewClient = new InsideWebViewClient();
        //javascriptInterface = new JavascriptInterface();
        //mWebView.addJavascriptInterface(javascriptInterface, "java2js_laole918");
        mWebView.setWebChromeClient(mInsideWebChromeClient);
        mWebView.setWebViewClient(mInsideWebViewClient);
    }

    private class InsideWebChromeClient extends WebChromeClient {
        private View mCustomView;
        private CustomViewCallback mCustomViewCallback;

        @Override
        public void onShowCustomView(View view, CustomViewCallback callback) {
            super.onShowCustomView(view, callback);
            if (mCustomView != null) {
                callback.onCustomViewHidden();
                return;
            }
            mCustomView = view;
            mFrameLayout.addView(mCustomView);
            mCustomViewCallback = callback;
            mWebView.setVisibility(View.GONE);
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        }

        public void onHideCustomView() {
            mWebView.setVisibility(View.VISIBLE);
            if (mCustomView == null) {
                return;
            }
            mCustomView.setVisibility(View.GONE);
            mFrameLayout.removeView(mCustomView);
            mCustomViewCallback.onCustomViewHidden();
            mCustomView = null;
            setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
            super.onHideCustomView();
        }
    }

    private class InsideWebViewClient extends WebViewClient {

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
        }

    }

    @Override
    public void onConfigurationChanged(Configuration config) {
        super.onConfigurationChanged(config);
        switch (config.orientation) {
            case Configuration.ORIENTATION_LANDSCAPE:
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
                getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
                break;
            case Configuration.ORIENTATION_PORTRAIT:
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
                getWindow().addFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
                break;
        }
    }
    @Override
    public void onPause() {
        super.onPause();
        mWebView.onPause();
    }

    @Override
    public void onResume() {
        super.onResume();
        mWebView.onResume();
    }

    @Override
    public void onBackPressed() {
        if (mWebView.canGoBack()) {
            mWebView.goBack();
            return;
        }
        super.onBackPressed();
    }

    @Override
    public void onDestroy() {
        mWebView.destroy();
        super.onDestroy();
    }
}

如果没有正确的全屏

1、可能是configChanges这个写错了属性

## 犯错的错误写成了如下：
android:configChanges="orientation|keyboardHidden" -->
## 正确的写法：
android:configChanges="orientation|screenSize|keyboardHidden"

2、主题一定的是NoActionBar

//本人犯得错误是，虽然写了requestWindow,但是还是没有改变，然后就修改了主题，设置成了noActionBar
requestWindowFeature(Window.FEATURE_NO_TITLE);

最后还是要感谢下原创者，因为不常用很容易忘记，到时候就方便复习了，非常感谢。