Android webView 获取、设置 cookie的方法

水深无声 2021-09-26 15:32 1489阅读 0赞

做android项目难免遇到这种情况，需使用webview加载网页，并且获取cookie。或者需要设置自己的请求cookie蔡翁正常加载网页。下面分别介绍一下android 中 webview的使用方法。

1.获取url中的cookie：

方法一：我们需要自己写一个cookie管理类：MyWebViewClient

public class MyWebViewClient extends WebViewClient {
        String url;
        WebView view;
        Activity activity;
        TextView textView;
        public MyWebViewClient(Activity activity)
        {
          //  this.textView =textView;
            this.activity =activity;
        }
    
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);
            return true;
        }
    
        public void onPageFinished(WebView view, String url) {
            CookieManager cookieManager = CookieManager.getInstance();
            String CookieStr = cookieManager.getCookie(url);
            Common.cookie = CookieStr;
            Toast.makeText(activity,CookieStr,Toast.LENGTH_SHORT).show();
            super.onPageFinished(view, url);
        }
    
    }

在主Activity方法中调用：

public class MainActivity extends Activity {
        private WebView mWebView;
        private MainActivity self;
        private String url ="https://www.baidu.com";//带cookie的页面url
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            self = MainActivity.this;
            mWebView = (WebView) findViewById(R.id.webview_forshow);
            mWebView.getSettings().setAppCacheEnabled(false);
            mWebView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
            mWebView.getSettings().setDatabaseEnabled(false);
            mWebView.getSettings().setDomStorageEnabled(false );
            mWebView.getSettings().setGeolocationEnabled(false);
    //        mWebView.getSettings().setPluginsEnabled(false);
            mWebView.getSettings().setSaveFormData(false);
            mWebView.getSettings().setSavePassword(false);
            mWebView.getSettings().setJavaScriptEnabled(true); ///------- 设置javascript 可用
            mWebView.loadUrl(url);
            mWebView.setWebChromeClient(new WebChromeClient()
            {
                @Override
                public void onProgressChanged(WebView view, int newProgress)
                {
                    super.onProgressChanged(view, newProgress);
                    view.requestFocus();
                }
            });
            mWebView.setWebViewClient(new MyWebViewClient(self));
          
        }
    
    
    }

布局文件：

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical" android:layout_width="match_parent"
        android:layout_height="match_parent">
    
        <WebView
            android:id="@+id/webview_forshow"
            android:layout_width="match_parent"
            android:layout_height="match_parent"></WebView>
    </LinearLayout>

方法二

CookieManager cookieManager = CookieManager.getInstance();
    String cookieStr  = cookieManager.getCookie(url);

注意：android需要连接网络的时候，要给予网络请求权限：

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

2.获取url中设置请求cookie：

在Load url之前调用 setCookies 方法：

/**
     * 设置Cookie
     *
     * @param url
     */
    private void setCookies(String url) {
        if (!TextUtils.isEmpty(strCookies)) {
            String arrayCookies[] = strCookies.split(";");
            if (arrayCookies != null && arrayCookies.length > 0) {
                for (String cookie : arrayCookies) {
                   // synCookies(url, cookie);
                    synCookies(this, url, cookie);
                }
            }
        }
    }
    
    /**
     * 同步Cookie
     *
     * @param url
     * @param cookie 格式：uid=21233 如需设置多个，需要多次调用
     */
    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    private void synCookies(String url, String cookie) {
        try {
            CookieManager cookieManager = CookieManager.getInstance();
            cookieManager.setAcceptCookie(true);
            cookieManager.setCookie(url, cookie);//cookies是在HttpClient中获得的cookie
            cookieManager.flush();
        }catch (Exception e){
            ToastUtil.showMessage(getString(com.neusoft.phone.xinhua.newsedit.R.string.no_support));
        }
    }

/**
     * 设置Cookie
     *
     * @param context
     * @param url
     * @param cookie  格式：uid=21233 如需设置多个，需要多次调用
     */
    public void synCookies(Context context, String url, String cookie) {
        CookieSyncManager.createInstance(context);
        CookieManager cookieManager = CookieManager.getInstance();
        cookieManager.setAcceptCookie(true);
        cookieManager.setCookie(url, cookie+";Domain=hotspot.******;Path=/");//cookies格式自定义
        CookieSyncManager.getInstance().sync();
    }
    
    /**
     * 清除Cookie
     *
     * @param context
     */
    public static void removeCookie(Context context) {
        CookieSyncManager.createInstance(context);
        CookieManager cookieManager = CookieManager.getInstance();
        cookieManager.removeAllCookie();
        CookieSyncManager.getInstance().sync();
    }