android 中 h5页面无法全屏播放视频怎么办

来咱们 一步一步的配置的哈

需要在AndroidManifest.xml文件中声明需要使用HardwareAccelerate务必强制打开硬件加速,否则只有声音没有画面,因为在Android 5的部分rom上默认关闭硬件加速的,此时需要强制打开硬件加速。
方式一:声明整个应用都需要加速:

< application ... android:hardwareAccelerated ="true">

方式二:在Activity中声明:

<activity ... android:hardwareAccelerated="true" >

硬件加速配置好后,添加android:configChanges配置
webView所在的Activity添加如下配置,不添加无法全屏播放。

...
android:configChanges="orientation|screenSize|keyboardHidden"
...

权限记得添加

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

二、webView控件所在的xml文件内容

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

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

三、Activity中初始化webView

1.去掉标题,否则可能导致无法全屏;
2.初始布局中的两个控件;
3.webView一些简单初始化和配置,根据需求灵活修改;

class MyActivity extends Activity {
    ...
    private FrameLayout mFrameLayout;
    private WebView mWebView;
    private InsideWebChromeClient mInsideWebChromeClient;
    //private JavascriptInterface javascriptInterface;
    private String URL = "改成自己需要测试的H5网页";

    @Override
    protected void onCreate(Bundle saveInstanceState) {
        // 1
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        // 2
        mFrameLayout = (FrameLayout) findViewById(R.id.mFrameLayout);
        mWebView = (WebView) findViewById(R.id.mWebView);
        // 3
        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);
    }
}

四、自定义WebChromeClient

步骤三种mInsideWebChromeClient = new InsideWebChromeClient();初始化的是自定义的WebChromeClient类,这里就开始创建该类

思路:在onShowCustomView方法中,讲获取到的view放到当前Activity的最上方,在onHideCustomView中,将之前的view隐藏或者删除,将原来被覆盖的webview放回来。并结束播放。

public Class MyActivity extends Activity {
    ...
    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();
        }
    }   
    ...
}

五、自定义WebViewClient,在Activity内部类。

重写WebViewClientonPageFinished()方法中可以注入JS语句。按需求添加。

...
   private class InsideWebViewClient extends WebViewClient {

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            // TODO Auto-generated method stub
            view.loadUrl(url);
            return true;
        }
        
        @Override
        public void onPageFinished(WebView view, String url) {
            super.onPageFinished(view, url);
            //mWebView.loadUrl(javascript);
        }

    }
...

六、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;
    }
}

七、Activity声明周期内webView的操作

...
@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();
}
...

思路:在onShowCustomView方法中,讲获取到的view放到当前Activity的最上方,在onHideCustomView中,将之前的view隐藏或者删除,将原来被覆盖的webview放回来。并结束播放。


八、没有正确全屏可能的原因

点击全屏按钮后,宽度拉宽了,高度也高了,但是可以上下滑动,看起来像是一个横屏的网页,这是伪全屏。

 
 

1.检查AndroidManifest.xml清单文件,WebView控件所在的Activity配置信息是否添加android:configChanges或者是否orientation,screenSize,keyboardHidden写全了。我之前就是忘记写了个screenSize参数,点击视频全屏按钮后,是一个伪全屏。还可以上下滑动呢。

 

## 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.检查Activity的主题是否NoActionBar了。


小技巧:html5测试的URL获取

打开搜狐,播放一个视频,查看源代码,查找以下代码,url就是html5。

<meta name="mobile-agent" content="format=html5;url=http://m.tv.sohu.com/20140508/n399272261.shtml">

最后

  1. 不懂得可以私信我,我会在第一时间回复。


posted @ 2020-06-10 09:49  RockSmall  阅读(3540)  评论(0编辑  收藏  举报