首先写布局文件activity_main.xml：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<FrameLayout
android:id="@+id/video_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:visibility="gone"
></FrameLayout>
<Button
android:id="@+id/video_landport"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="全屏不显示该按扭，点击切换横屏"
android:gravity="center"
/>
<WebView
android:id="@+id/video_webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
原理：实现全屏的时候把webview里的视频放到一个View（布局里的video_view控件）里面，然后把webview隐藏掉！这样就实现了全屏播放的！
现在具体来看看怎么实现的:
先放代码MainActivity.java：
public class MainActivity extends Activity {
private FrameLayout videoview;// 全屏时视频加载view
private Button videolandport;
private WebView videowebview;
private Boolean islandport = true;//true表示此时是竖屏，false表示此时横屏。
private View xCustomView;
private xWebChromeClient xwebchromeclient;
private String url = "http://look.appjx.cn/mobile_api.php?mod=news&id=12604";
private WebChromeClient.CustomViewCallback xCustomViewCallback;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);//去掉应用标题
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);
initwidget();
initListener();
videowebview.loadUrl(url);
}
private void initListener() {
// TODO Auto-generated method stub
videolandport.setOnClickListener(new Listener());
}
private void initwidget() {
// TODO Auto-generated method stub
videoview = (FrameLayout) findViewById(R.id.video_view);
videolandport = (Button) findViewById(R.id.video_landport);
videowebview = (WebView) findViewById(R.id.video_webview);
WebSettings ws = videowebview.getSettings();
/**
* setAllowFileAccess 启用或禁止WebView访问文件数据 setBlockNetworkImage 是否显示网络图像
* setBuiltInZoomControls 设置是否支持缩放 setCacheMode 设置缓冲的模式
* setDefaultFontSize 设置默认的字体大小 setDefaultTextEncodingName 设置在解码时使用的默认编码
* setFixedFontFamily 设置固定使用的字体 setJavaSciptEnabled 设置是否支持Javascript
* setLayoutAlgorithm 设置布局方式 setLightTouchEnabled 设置用鼠标激活被选项
* setSupportZoom 设置是否支持变焦
* */
ws.setBuiltInZoomControls(true);// 隐藏缩放按钮
ws.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NARROW_COLUMNS);// 排版适应屏幕
ws.setUseWideViewPort(true);// 可任意比例缩放
ws.setLoadWithOverviewMode(true);// setUseWideViewPort方法设置webview推荐使用的窗口。setLoadWithOverviewMode方法是设置webview加载的页面的模式。
ws.setSavePassword(true);
ws.setSaveFormData(true);// 保存表单数据
ws.setJavaScriptEnabled(true);
ws.setGeolocationEnabled(true);// 启用地理定位
ws.setGeolocationDatabasePath("/data/data/org.itri.html5webview/databases/");// 设置定位的数据库路径
ws.setDomStorageEnabled(true);
xwebchromeclient = new xWebChromeClient();
videowebview.setWebChromeClient(xwebchromeclient);
videowebview.setWebViewClient(new xWebViewClientent());
}
class Listener implements OnClickListener {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.video_landport:
if (islandport) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
videolandport.setText("全屏不显示该按扭，点击切换横屏");
}else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
videolandport.setText("全屏不显示该按扭，点击切换竖屏");
}
break;
default:
break;
}
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (inCustomView()) {
hideCustomView();
return true;
}else {
videowebview.loadUrl("about:blank");
// mTestWebView.loadData("", "text/html; charset=UTF-8", null);
MainActivity.this.finish();
Log.i("testwebview", "===>>>2");
}
}
return true;
}
/**
* 判断是否是全屏
* @return
*/
public boolean inCustomView() {
return (xCustomView != null);
}
/**
* 全屏时按返加键执行退出全屏方法
*/
public void hideCustomView() {
xwebchromeclient.onHideCustomView();
}
/**
* 处理Javascript的对话框、网站图标、网站标题以及网页加载进度等
* @author
*/
public class xWebChromeClient extends WebChromeClient {
private Bitmap xdefaltvideo;
private View xprogressvideo;
@Override
//播放网络视频时全屏会被调用的方法
public void onShowCustomView(View view, WebChromeClient.CustomViewCallback callback)
{
if (islandport) {
}
else{
// ii = "1";
// setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
videowebview.setVisibility(View.GONE);
//如果一个视图已经存在，那么立刻终止并新建一个
if (xCustomView != null) {
callback.onCustomViewHidden();
return;
}
videoview.addView(view);
xCustomView = view;
xCustomViewCallback = callback;
videoview.setVisibility(View.VISIBLE);
}
@Override
//视频播放退出全屏会被调用的
public void onHideCustomView() {
if (xCustomView == null)//不是全屏播放状态
return;
// Hide the custom view.
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
xCustomView.setVisibility(View.GONE);
// Remove the custom view from its container.
videoview.removeView(xCustomView);
xCustomView = null;
videoview.setVisibility(View.GONE);
xCustomViewCallback.onCustomViewHidden();
videowebview.setVisibility(View.VISIBLE);
//Log.i(LOGTAG, "set it to webVew");
}
//视频加载添加默认图标
@Override
public Bitmap getDefaultVideoPoster() {
//Log.i(LOGTAG, "here in on getDefaultVideoPoster");
if (xdefaltvideo == null) {
xdefaltvideo = BitmapFactory.decodeResource(
getResources(), R.drawable.videoicon);
}
return xdefaltvideo;
}
//视频加载时进程loading
@Override
public View getVideoLoadingProgressView() {
//Log.i(LOGTAG, "here in on getVideoLoadingPregressView");
if (xprogressvideo == null) {
LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
xprogressvideo = inflater.inflate(R.layout.video_loading_progress, null);
}
return xprogressvideo;
}
//网页标题
@Override
public void onReceivedTitle(WebView view, String title) {
(MainActivity.this).setTitle(title);
}
// @Override
// //当WebView进度改变时更新窗口进度
// public void onProgressChanged(WebView view, int newProgress) {
// (MainActivity.this).getWindow().setFeatureInt(Window.FEATURE_PROGRESS, newProgress*100);
// }
}
/**
* 处理各种通知、请求等事件
* @author
*/
public class xWebViewClientent extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.i("webviewtest", "shouldOverrideUrlLoading: "+url);
return false;
}
}
/**
* 当横竖屏切换时会调用该方法
* @author
*/
@Override
public void onConfigurationChanged(Configuration newConfig) {
Log.i("testwebview", "=====<<< onConfigurationChanged >>>=====");
super.onConfigurationChanged(newConfig);
if(newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE){
Log.i("webview", " 现在是横屏1");
islandport = false;
}else if(newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
Log.i("webview", " 现在是竖屏1");
islandport = true;
}
}
}
最后说下AndroidManifest.xml设置;
访问网络权限加上这句
<uses-permission android:name="android.permission.INTERNET"/>
当切换横竖屏时为了不重新调用onCreate等方法，要加个这句：
android:configChanges="orientation|keyboardHidden|screenSize"
完成
参考于:https://www.cnblogs.com/lee0oo0/p/4039654.html