Android Webview 应用程序不会让视频播放器全屏显示

Posted 2023-03-22

【中文标题】Android Webview 应用程序不会让视频播放器全屏显示

【英文标题】：Android Webview app won't let video player go full screen

【发布时间】：2013-03-25 16:02:59

【问题描述】：

您好，我为我的视频网站创建了一个 WebView 应用。该网站的设计是为移动用户加载的混合体。只有与移动设备兼容的视频才会加载到混合设备上。播放器来自 Vk、DailyMotion、YouTube 和 QuickTime。

视频只能在 SDK 11 及更高版本上播放，但是当我单击播放器按钮进入全屏模式时，它只会停止播放视频，而不会启动到全屏模式。

(Webviewactivity.java)

public void onCreate(Bundle savedInstanceState) 
    super.onCreate(savedInstanceState);
    getWindow().requestFeature(Window.FEATURE_PROGRESS);
    setContentView(R.layout.main);

    parentView = (RelativeLayout) findViewById(R.id.parent_rl);

    webviewProgress = (ProgressBar) findViewById(R.id.webview_progress);

    webview = (WebView) findViewById(R.id.webview);
    webview.getSettings().setjavascriptEnabled(true);
    webview.getSettings().setBuiltInZoomControls(true);
    webview.getSettings().setAllowFileAccess(true);
    webview.setWebViewClient(new MyWebViewClient());
    webview.getSettings().setPluginState(WebSettings.PluginState.ON);
    webview.loadUrl(URL);
    webviewProgress.setProgress(0);

    webview.setWebChromeClient(new MyWebChromeClient());
    webview.setDownloadListener(new DownloadListener() 
        public void onDownloadStart(String url, String userAgent,
                String contentDisposition, String mimetype,
                long contentLength) 
            mProgressDialog = new ProgressDialog(WebViewActivity.this);
            mProgressDialog.setMessage("Downloading...");
            mProgressDialog.setIndeterminate(false);
            mProgressDialog.setMax(100);
            mProgressDialog
                    .setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            DownloadFile downloadFile = new DownloadFile();
            downloadFile.execute(url);
        
    );

    initSlider();

    initAdmob();


/**
 * When when file was chosen
 */
@Override
protected void onActivityResult(int requestCode, int resultCode,
        Intent intent) 
    if (requestCode == FILECHOOSER_RESULTCODE) 
        if (null == mUploadMessage)
            return;
        Uri result = intent == null || resultCode != RESULT_OK ? null
                : intent.getData();
        mUploadMessage.onReceiveValue(result);
        mUploadMessage = null;

(Main.xml)

android:id="@+id/parent_rl"
android:layout_
android:layout_
android:keepScreenOn="true" >

<ProgressBar
    android:id="@+id/webview_progress"
    style="?android:attr/progressBarStyleHorizontal"
    android:layout_
    android:layout_
    android:layout_alignParentTop="true"
    android:maxHeight="5dip"
    android:minHeight="5dip"
    android:progressDrawable="@drawable/blueprogress" />

<FrameLayout
    android:id="@+id/framelayout"
    android:layout_
    android:layout_
    android:layout_below="@id/webview_progress"
    android:orientation="vertical" >

    <WebView
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/webview"
        android:layout_
        android:layout_ />

（清单.xml）

package="com.wCHfree"
android:versionCode="7"
android:versionName="1.1" >

<uses-sdk
    android:minSdkVersion="11"
    android:targetSdkVersion="17" />

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

<application
    android:icon="@drawable/ic_launcher_red"
    android:label="@string/app_name"
    android:theme="@android:style/Theme.Black" >
    <activity
        android:name="com.webview.splashScreen.SplashScreenActivity"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.webview.splashScreen.WebViewActivity"
        android:configChanges="orientation|screenSize|screenLayout"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
    </activity>
    <activity
        android:name="com.google.ads.AdActivity"
        android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />

【参考方案1】：

你需要实现 WebChromeClient 的showCustomView & hideCustomView 方法，你还需要在你的AndroidManifest 文件中使用android:hardwareAccelerated="true"。 我在这里发布我的示例项目。 我所做的是在我的 main.xml 中保留一个 Framelayout(customContainer)，并在此处添加在 showCustomView 中收到的视图，并在 onHide 中将其删除。也相应地隐藏/显示 webview。下面的代码在设备上完美运行。

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.example.webview"
          android:versionCode="1"
          android:versionName="1.0">
    <uses-sdk android:minSdkVersion="8"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <application android:label="@string/app_name" android:icon="@drawable/ic_launcher"
            android:hardwareAccelerated="true">
        <activity android:name="MyActivity"
                  android:configChanges="orientation|keyboardHidden"
                  android:hardwareAccelerated="true"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
    </application>
</manifest>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_
              android:layout_
        >
    <WebView
            android:layout_
            android:layout_
            android:id="@+id/webView"
            android:layout_gravity="center"
            />
    <FrameLayout
            android:id="@+id/customViewContainer"
            android:layout_
            android:layout_
            android:visibility="gone"
            />
</LinearLayout>

video_progress.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:id="@+id/progress_indicator"
              android:orientation="vertical"
              android:layout_centerInParent="true"
              android:layout_
              android:layout_>

    <ProgressBar android:id="@android:id/progress"
                 style="?android:attr/progressBarStyleLarge"
                 android:layout_gravity="center"
                 android:layout_
                 android:layout_/>

    <TextView android:paddingTop="5dip"
              android:layout_
              android:layout_
              android:layout_gravity="center"
              android:text="loading"
              android:textSize="14sp"
              android:textColor="?android:attr/textColorPrimary"/>
</LinearLayout>

MyActivity.java

package com.example.webview;

import android.app.Activity;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.FrameLayout;

public class MyActivity extends Activity 
    private WebView webView;
    private FrameLayout customViewContainer;
    private WebChromeClient.CustomViewCallback customViewCallback;
    private View mCustomView;
    private myWebChromeClient mWebChromeClient;
    private myWebViewClient mWebViewClient;

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        customViewContainer = (FrameLayout) findViewById(R.id.customViewContainer);
        webView = (WebView) findViewById(R.id.webView);

        mWebViewClient = new myWebViewClient();
        webView.setWebViewClient(mWebViewClient);

        mWebChromeClient = new myWebChromeClient();
        webView.setWebChromeClient(mWebChromeClient);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.getSettings().setAppCacheEnabled(true);
        webView.getSettings().setBuiltInZoomControls(true);
        webView.getSettings().setSaveFormData(true);
        webView.loadUrl("http://m.youtube.com");
    

    public boolean inCustomView() 
        return (mCustomView != null);
    

    public void hideCustomView() 
        mWebChromeClient.onHideCustomView();
    

    @Override
    protected void onPause() 
        super.onPause();    //To change body of overridden methods use File | Settings | File Templates.
        webView.onPause();
    

    @Override
    protected void onResume() 
        super.onResume();    //To change body of overridden methods use File | Settings | File Templates.
        webView.onResume();
    

    @Override
    protected void onStop() 
        super.onStop();    //To change body of overridden methods use File | Settings | File Templates.
        if (inCustomView()) 
            hideCustomView();
        
    

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) 
        if (keyCode == KeyEvent.KEYCODE_BACK) 

            if (inCustomView()) 
                hideCustomView();
                return true;
            

            if ((mCustomView == null) && webView.canGoBack()) 
                webView.goBack();
                return true;
            
        
        return super.onKeyDown(keyCode, event);
    

    class myWebChromeClient extends WebChromeClient 
        private Bitmap mDefaultVideoPoster;
        private View mVideoProgressView;

        @Override
        public void onShowCustomView(View view, int requestedOrientation, CustomViewCallback callback) 
           onShowCustomView(view, callback);    //To change body of overridden methods use File | Settings | File Templates.
        

        @Override
        public void onShowCustomView(View view,CustomViewCallback callback) 

            // if a view already exists then immediately terminate the new one
            if (mCustomView != null) 
                callback.onCustomViewHidden();
                return;
            
            mCustomView = view;
            webView.setVisibility(View.GONE);
            customViewContainer.setVisibility(View.VISIBLE);
            customViewContainer.addView(view);
            customViewCallback = callback;
        

        @Override
        public View getVideoLoadingProgressView() 

            if (mVideoProgressView == null) 
                LayoutInflater inflater = LayoutInflater.from(MyActivity.this);
                mVideoProgressView = inflater.inflate(R.layout.video_progress, null);
            
            return mVideoProgressView;
        

        @Override
        public void onHideCustomView() 
            super.onHideCustomView();    //To change body of overridden methods use File | Settings | File Templates.
            if (mCustomView == null)
                return;

            webView.setVisibility(View.VISIBLE);
            customViewContainer.setVisibility(View.GONE);

            // Hide the custom view.
            mCustomView.setVisibility(View.GONE);

            // Remove the custom view from its container.
            customViewContainer.removeView(mCustomView);
            customViewCallback.onCustomViewHidden();

            mCustomView = null;
        
    

    class myWebViewClient extends WebViewClient 
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) 
            return super.shouldOverrideUrlLoading(view, url);    //To change body of overridden methods use File | Settings | File Templates.
        
    

You can clone sample project from here..

【讨论】：

谢谢，我试试看。

也谢谢你，这个回答很权威。我会试一试，如果一切顺利 - 赏金就是你的了。

我必须说这个示例项目比我自己的更好。我有在 2.3.3 上工作的视频，这些视频不适用于我自己的项目的那个版本。甚至不知道你是怎么做到的。

位图有什么用？此代码中的其他任何地方都没有引用它

@Stan 我在onCreateView 中获取指向 webview mWebView = (WebView) v.findViewById(R.id.webView); 的链接没有问题。这是另一个问题。无论如何，我尝试转换另一个示例代码以在片段inducesmile.com/android/… 中使用它，它运行良好，但我无法使用onBackPressed 方法（因为片段不会覆盖它）。所以无法退出全屏