社交登录:如何注销Instagram.如何清除 Web 视图用户名和密码

Question

我尝试从WebView中删除cookie并清除历史记录，但无法完全注销。

@Override
public void onPageFinished(WebView view, String url) {
    view.clearHistory();
    super.onPageFinished(view, url);
    String title = mWebView.getTitle();
    if (title != null && title.length() > 0) {
        mTitle.setText(title);
    }
    CookieSyncManager.createInstance(getContext());
    CookieManager cookieManager = CookieManager.getInstance();
    cookieManager.removeAllCookie();
    cookieManager.setAcceptCookie(false);
    Log.d(TAG, "onPageFinished URL: " + url);
    mSpinner.dismiss();
}

和设置WebView

private void setUpWebView() {
    mWebView = new WebView(getContext());
    mWebView.setVerticalScrollBarEnabled(false);
    mWebView.setHorizontalScrollBarEnabled(false);
    mWebView.setWebViewClient(new OAuthWebViewClient());
    mWebView.getSettings().setJavaScriptEnabled(true);
    WebSettings mWebSettings = mWebView.getSettings();
    mWebSettings.setSavePassword(false);
    mWebView.clearView();
    mWebView.loadUrl("about:blank");
    mWebView.loadUrl(mUrl);
    mWebView.clearCache(true);
    mWebView.clearHistory();
    mWebView.setLayoutParams(FILL);
    mContent.addView(mWebView);
    CookieSyncManager.createInstance(getContext());
    CookieManager cookieManager = CookieManager.getInstance();
    cookieManager.removeAllCookie();
    //cookieManager.setAcceptCookie(false);
}

我做错了什么吗？

请帮助我，提前谢谢。

Answer 1

使用以下方法清除每次登录的 cookie。 removeAllCookie方法已在 API 级别 21 中弃用。请改用removeAllCookies(ValueCallback)。

// Clear cookie to prevent automatic login
  @SuppressWarnings("deprecation")
  private void clearCookie() {
      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
          CookieManager.getInstance().removeAllCookies(null);
      } else {
          CookieManager.getInstance().removeAllCookie();
      }
  }

这也应该有效

WebSettings webSettings = webview.getSettings();
webSettings.setSavePassword(false);
webSettings.setSaveFormData(false);
webView.clearCache(true);
webView.clearHistory();

Answer 2

CookieSyncManager被标记为已弃用，

这是文档

这是方法

public abstract void removeAllCookies (ValueCallback callback(

在您的情况下：

cookieManager.removeAllCookies(null);

应该是这样的

android.webkit.CookieManager cookieManager = CookieManager.getInstance();
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
           // for  >21 devices
           cookieManager.removeAllCookies(null);
     }
      else 
      {
        // for  <21 devices 
       cookieManager.removeAllCookie();
       }

如果使用"null"不起作用，则必须使用回调*。

 android.webkit.CookieManager cookieManager = CookieManager.getInstance();
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
           // for  >21 devices
           cookieManager.removeAllCookies(new ValueCallback<Boolean>() {
             // a callback which is executed when the cookies have been removed
             @Override
             public void onReceiveValue(Boolean aBoolean) {
                   Log.d(TAG, "Cookie removed: " + aBoolean);
             }
           });
     }
      else 
      {
        // for  <21 devices 
       cookieManager.removeAllCookie();
       }

希望这会有所帮助。