Crosswalk基本用法示例(Demo)

博客轉載請標明出處:http://blog.csdn.net/nmyangmo/article/details/73105712

Android 5.0明確指出其webview是支持webRTC的，但是在國內各大廠商的定製下。。咳咳，算了，說多了都是淚啊~！

一怒之下我的webview內核換成了crosswalk。換完之後直接被暴擊，APP體積增加了40M啊！！！

不過沒辦法了webRTC功能和好處還是很誘人啊,這裏就不多說了。讓我們看crosswalk吧。

Crosswalk官方網址: https://crosswalk-project.org/
Crosswalk 下載地址: https://crosswalk-project.org/documentation/downloads.html
或者: https://download.01.org/crosswalk/releases/crosswalk/

**我下載的是: crosswalk-23.53.589.4.aar 這個版本，兼容x86和arm類型的CPU.
集成方法：1、設置grade外部庫爲libs，拷貝aar文件到libs**

repositories {
    flatDir {
        dirs 'libs'
    }
}

2、關聯crosswalk庫

compile(name: 'crosswalk-23.53.589.4', ext: 'aar')

crosswalk的使用方法基本和webview一樣，只不過叫XWalkView
需要注意的是需要繼承XWalkActivity
重寫oncreate(),onXWalkReady()方法。加載網頁和配置都在crosswalk準備好後進行(onXWalkReady方法中)。關於XWalkView配置和webview基本相同，可以參考webview對XWalkView進行配置

XWalXWalkSettings mWebSettings = mWebView.getSettings();
        mWebSettings.setSupportZoom(true);//支持縮放
        mWebSettings.setBuiltInZoomControls(true);//可以任意縮放
        mWebSettings.setLoadWithOverviewMode(true);
        mWebSettings.setUseWideViewPort(true);////將圖片調整到適合webview的大小
//        mWebSettings.setDefaultTextEncodingName("utf-8");
        mWebSettings.setLoadsImagesAutomatically(true);
//        mWebSettings.setMixedContentMode()
        //調用JS方法.安卓版本大於17,加上註解 @JavascriptInterface
        mWebSettings.setJavaScriptEnabled(true);//支持JS

WebView中的setwebViewClient(webViewClient)對應XWalkView中的setResourceClient(new XWalkResourceClient(mWebView)方法

mWebView.setResourceClient(new XWalkResourceClient(mWebView) {

        //=========HTML5定位==========================================================
        //需要先加入權限
        //<uses-permission android:name="android.permission.INTERNET"/>
        //<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
        //<uses-permission android:name=
        // "android.permission.ACCESS_COARSE_LOCATION"/>

        @Override
        public boolean shouldOverrideUrlLoading(XWalkView view, String url) {
               view.loadUrl(url);
               return true;
               }

        @Override
        public void onReceivedSslError(XWalkView view, ValueCallback<Boolean> callback, SslError error) {
             super.onReceivedSslError(view, callback, error);
               }

        @Override
        public void onLoadFinished(XWalkView view, String url) {
               super.onLoadFinished(view, url);
               }

         @Override
         public void onLoadStarted(XWalkView view, String url) {
                super.onLoadStarted(view, url);
                }

         @Override
         public void onProgressChanged(XWalkView view, int progressInPercent) {
                super.onProgressChanged(view, progressInPercent);
                }

         @Override
         public void onReceivedClientCertRequest(XWalkView view, ClientCertRequest handler) {
                super.onReceivedClientCertRequest(view, handler);
                }

         @Override
         public void onDocumentLoadedInFrame(XWalkView view, long frameId) {
                 super.onDocumentLoadedInFrame(view, frameId);
                }

         @Override
         public void onReceivedHttpAuthRequest(XWalkView view, XWalkHttpAuthHandler handler, String host, String realm) {
                super.onReceivedHttpAuthRequest(view, handler, host, realm);
                }

         @Override
         public void onReceivedLoadError(XWalkView view, int errorCode, String description, String failingUrl) {
                super.onReceivedLoadError(view, errorCode, description, failingUrl);
                }

         @Override
         public void onReceivedResponseHeaders(XWalkView view, XWalkWebResourceRequest request, XWalkWebResourceResponse response) {
                super.onReceivedResponseHeaders(view, request, response);
                }
        }
        );

WebView中的setWebChromeClient(webChromeClient)對應XWalkView中的setUIClient(new XWalkUIClient(mWebView)方法

mWebView.setUIClient(new XWalkUIClient(mWebView) {
            @Override
            public void onPageLoadStarted(XWalkView view, String url) {
                super.onPageLoadStarted(view, url);
            }

            @Override
            public boolean onJsAlert(XWalkView view, String url, String message, XWalkJavascriptResult result) {
                return super.onJsAlert(view, url, message, result);
            }

            @Override
            public void onScaleChanged(XWalkView view, float oldScale, float newScale) {
                super.onScaleChanged(view, oldScale, newScale);
            }

            @Override
            public void onPageLoadStopped(XWalkView view, String url, LoadStatus status) {
                super.onPageLoadStopped(view, url, status);
            }
        });

當然爲了避免關閉xWalkView引起內存泄露的問題，我們選擇了動態加載這個view.

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
mWebView = new XWalkView(getApplicationContext());
mWebView.setLayoutParams(params);
mLayout.addView(mWebView);

因爲webRTC需要錄音我們還需要動態的申請權限(查看Demo)

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED
            || ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED
            || ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED
            || ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this,
                new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.RECORD_AUDIO},
                3332);
    } else {
        //
        mWebView.loadUrl(mUrl);
    }
} else {

    mWebView.loadUrl(mUrl);
}

Demo還有網絡監聽NetReceiver和來電監聽PhoneCallReceiver，這裏不再贅述，感興趣可以查看Demo源碼

博客轉載請標明出處:http://blog.csdn.net/nmyangmo/article/details/73105712

源碼下載:http://download.csdn.net/detail/nmyangmo/9868127