WebView支持H5全屏播放

因?yàn)楣居玫腶pp沒(méi)有用到webView去展示頁(yè)面，然后一天一個(gè)朋友問(wèn)我webView中怎么讓h5頁(yè)面的視頻點(diǎn)擊全屏的時(shí)候播放，當(dāng)時(shí)還真的懵逼了。后來(lái)在網(wǎng)上查資料，還是找到不錯(cuò)的文章。
首先支持原創(chuàng)：http://www.itdecent.cn/p/2dd60e6bd798

webView全屏播放視頻的步驟：

1、啟動(dòng)硬件加速
2、webView控制所在的XML文件內(nèi)容
3、Activity中初始化webView
4、自定義WebChromeClient類
5、自定義WebViewClient類
6、在Acitivity中復(fù)寫(xiě)onConfigurationChanged方法
7、Activity中聲明周期內(nèi)webView的操作

圖直接拿過(guò)來(lái)用了，因?yàn)槲乙彩怯盟倪@個(gè)資源的

Paste_Image.png

1、啟動(dòng)硬件加速

在AndroidManifest.xml中聲明使用HardwareAccelerate，請(qǐng)測(cè)沒(méi)有開(kāi)啟只有聲音沒(méi)有畫(huà)面（在application和activity都聲明了）。以及配置configChanges,在橫屏情況下不設(shè)置會(huì)導(dǎo)致activity銷毀重新創(chuàng)建，記得添加權(quán)限。差點(diǎn)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>

這里主題也貼出來(lái)吧，application的主題是默認(rèn)的就好了

activity的主題
<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：去掉標(biāo)題，否則可能無(wú)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;
    //需要加載的h5頁(yè)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);
    }

自定義webChromeClient類

思路：在onShowCustomView方法中，將獲取到的view放入到當(dāng)前activity的最上方，在onHideCustomerView中，將之前的View隱藏或者刪除，將原來(lái)被覆蓋的webView放回來(lái)，并播放結(jié)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、自定義webViewClient類

重寫(xiě)webViewClient在onPageFinished()方法中可以注入js語(yǔ)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中復(fù)寫(xiě)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中聲明周期內(nèi)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;
    //需要加載的h5頁(yè)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();
    }
}

如果沒(méi)有正確的全屏

1、可能是configChanges這個(gè)寫(xiě)錯(cuò)了屬性

## 犯錯(cuò)的錯(cuò)誤寫(xiě)成了如下：
android:configChanges="orientation|keyboardHidden" -->
## 正確的寫(xiě)法：
android:configChanges="orientation|screenSize|keyboardHidden"

2、主題一定的是NoActionBar

//本人犯得錯(cuò)誤是，雖然寫(xiě)了requestWindow,但是還是沒(méi)有改變，然后就修改了主題，設(shè)置成了noActionBar
requestWindowFeature(Window.FEATURE_NO_TITLE);

最后還是要感謝下原創(chuàng)者，因?yàn)椴怀Ｓ煤苋菀淄?，到時(shí)候就方便復(fù)習(xí)了，非常感謝。

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