Android WebView 真正播放視頻 全屏 橫屏播放

WebView是個大坑，需求是希望點擊一個視頻鏈接跳轉到網頁上播放視頻，然後點擊全屏能自動橫屏。。。查了很多東西，最後直接上代碼吧，註釋都在，直接看吧，使用也很簡單，直接把URL傳到這個Activity就行了，如果你的網站的視頻是flash播放的話，會出現空白的情況，無法播放。。。所以必須是H5的。。

package com.gogosu.gogosuandroid.ui.strategy;

import android.app.Activity;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.FrameLayout;

import com.gogosu.gogosuandroid.R;
import com.gogosu.gogosuandroid.model.Constant.IntentConstant;

public class WebVideoActivity extends Activity {

    private WebView webView;
    private String url;

    /** 視頻全屏參數 */
    protected static final FrameLayout.LayoutParams COVER_SCREEN_PARAMS = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
    private View customView;
    private FrameLayout fullscreenContainer;
    private WebChromeClient.CustomViewCallback customViewCallback;

    @Override
    protected void onCreate(Bundle bundle) {
        super.onCreate(bundle);

        url = getIntent().getStringExtra(IntentConstant.VIDEO_PLAY_LINK);//傳進來視頻鏈接
        setContentView(R.layout.activity_full_screen);
        webView = (WebView) findViewById(R.id.webview);
        initWebView();
    }

    @Override
    protected void onStop() {
        super.onStop();
        webView.reload();
    }

    @Override
    protected void onResume() {
        super.onResume();
        webView.onResume();
        webView.resumeTimers();
    }

    /** 展示網頁界面 **/
public void initWebView() {
        WebChromeClient wvcc = new WebChromeClient();
        WebSettings webSettings = webView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        webSettings.setUseWideViewPort(true); // 關鍵點
        webSettings.setAllowFileAccess(true); // 允許訪問文件
        webSettings.setSupportZoom(true); // 支持縮放
        webSettings.setLoadWithOverviewMode(true);
        webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE); // 不加載緩存內容

        webView.setWebChromeClient(wvcc);
        WebViewClient wvc = new WebViewClient() {
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                webView.loadUrl(url);
                return true;
            }
        };
        webView.setWebViewClient(wvc);

        webView.setWebChromeClient(new WebChromeClient() {

            /*** 視頻播放相關的方法 **/

            @Override
            public View getVideoLoadingProgressView() {
                FrameLayout frameLayout = new FrameLayout(WebVideoActivity.this);
                frameLayout.setLayoutParams(new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT));
                return frameLayout;
            }

            @Override
            public void onShowCustomView(View view, CustomViewCallback callback) {
                showCustomView(view, callback);
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);//播放時橫屏幕，如果需要改變橫豎屏，只需該參數就行了

           @Override
            public void onHideCustomView() {
                hideCustomView();
                setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);//不播放時豎屏
            }
        });

        // 加載Web地址
        webView.loadUrl(url);
    }

    /** 視頻播放全屏 **/
    private void showCustomView(View view, WebChromeClient.CustomViewCallback callback) {
        // if a view already exists then immediately terminate the new one
        if (customView != null) {
            callback.onCustomViewHidden();
            return;
        }

        WebVideoActivity.this.getWindow().getDecorView();

        FrameLayout decor = (FrameLayout) getWindow().getDecorView();
        fullscreenContainer = new FullscreenHolder(this);
        fullscreenContainer.addView(view, COVER_SCREEN_PARAMS);
        decor.addView(fullscreenContainer, COVER_SCREEN_PARAMS);
        customView = view;
        setStatusBarVisibility(false);
        customViewCallback = callback;
    }

    /** 隱藏視頻全屏 */
    private void hideCustomView() {
        if (customView == null) {
            return;
        }

        setStatusBarVisibility(true);
        FrameLayout decor = (FrameLayout) getWindow().getDecorView();
        decor.removeView(fullscreenContainer);
        fullscreenContainer = null;
        customView = null;
        customViewCallback.onCustomViewHidden();
        webView.setVisibility(View.VISIBLE);
    }

    /** 全屏容器界面 */
    static class FullscreenHolder extends FrameLayout {

        public FullscreenHolder(Context ctx) {
            super(ctx);
            setBackgroundColor(ctx.getResources().getColor(android.R.color.black));
        }

        @Override
        public boolean onTouchEvent(MotionEvent evt) {
            return true;
        }
    }

    private void setStatusBarVisibility(boolean visible) {
        int flag = visible ? 0 : WindowManager.LayoutParams.FLAG_FULLSCREEN;
        getWindow().setFlags(flag, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    }

    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK:
                /** 回退鍵 事件處理 優先級:視頻播放全屏-網頁回退-關閉頁面 */
                if (customView != null) {
                    hideCustomView();
                } else if (webView.canGoBack()) {
                    webView.goBack();
                } else {
                    finish();
                }
                return true;
            default:
                return super.onKeyUp(keyCode, event);
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        webView.stopLoading();
        webView.setWebChromeClient(null);
        webView.setWebViewClient(null);
        webView = null;
    }
}