枕上诗书闲处好,门前风景雨来佳。这篇文章主要讲述让Facebook登录使用Android Webview相关的知识,希望能为你提供帮助。
我只是想在android上的WebView上实现facebook登录。问题是我单击html页面上的facebook按钮并在Facebook对话框中插入用户名和密码。网址重定向只是给了我一个黑页。
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
WebView webview = new WebView(this);
webview.setWebChromeClient(new WebChromeClient());
webview.getSettings().setPluginState(PluginState.ON);
webview.getSettings().setjavascriptEnabled(true);
webview.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
webview.getSettings().setjavaScriptCanOpenWindowsAutomatically(true);
webview.setWebViewClient(new WebViewClient());
webview.loadUrl("http://peoplehunt.crowdscanner.com/hunt");
setContentView(webview);
这是我的HTML页面上的Facebook常规JavaScript API,当点击facebook按钮时会调用此函数。
$("#login_facebook").click(function() {FB.login(function(response) {
//This function should be called
if (response.authResponse) {
FB.api('/me?fields=name,email,picture,id&
type=large', function(response) {
//console.log("email "+response.email);
$("#submitHandle").hide();
$("#loader").show();
//console.log('Good to see you, ' + response.picture + '.');
var theUsername = response.name;
theUsername = theUsername.replace(/ /g, '_')+"_"+response.id+"@meetforeal.com";
//console.log(theUsername);
$("input[name=email]").val(encodeURIComponent(response.email));
$("input[name=lastName]").val(encodeURIComponent(response.name));
$("input[name=avatarImage]").val(response.picture);
$("input[name=userName]").val(encodeURIComponent(theUsername));
$("#msg_twitter").fadeIn("slow");
$("#submitHandle").show();
$("#loader").hide();
$("#user").attr("action","/crowdmodule/auth/registerattendeefacebook");
$("#user").submit();
});
} else {
//console.log('User cancelled login or did not fully authorize.');
}
}, {scope: 'email'});
有关如何在Facebook对话框页面上重定向后获得响应的任何想法?谢谢。
答案我在Android应用程序上遇到了同样的问题。问题的原因是FB登录javascript在新窗口中打开一个新页面。然后它尝试关闭它并在登录成功后发回一些javascript auth代码。 WebView通常只是“单一窗口”,因此无法返回,因此空白屏幕。
【让Facebook登录使用Android Webview】请遵循我的工作代码中的流动示例。
<
FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0099cc"
tools:context=".MyActivity"
android:id="@+id/webview_frame">
<
WebView
android:id="@+id/webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
ID“webview”的Webview是我内容的主视图。以下是我的活动代码。
public class MyActivity extends Activity {/* URL saved to be loaded after fb login */
private static final String target_url="http://www.example.com";
private static final String target_url_prefix="www.example.com";
private Context mContext;
private WebView mWebview;
private WebView mWebviewPop;
private FrameLayout mContainer;
private long mLastBackPressTime = 0;
private Toast mToast;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_urimalo);
// final View controlsView =
// findViewById(R.id.fullscreen_content_controls);
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.setAcceptCookie(true);
mWebview = (WebView) findViewById(R.id.webview);
//mWebviewPop = (WebView) findViewById(R.id.webviewPop);
mContainer = (FrameLayout) findViewById(R.id.webview_frame);
WebSettings webSettings = mWebview.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setAppCacheEnabled(true);
webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
webSettings.setSupportMultipleWindows(true);
mWebview.setWebViewClient(new UriWebViewClient());
mWebview.setWebChromeClient(new UriChromeClient());
mWebview.loadUrl(target_url);
mContext=this.getApplicationContext();
}private class UriWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
String host = Uri.parse(url).getHost();
//Log.d("shouldOverrideUrlLoading", url);
if (host.equals(target_url_prefix))
{
// This is my web site, so do not override;
let my WebView load
// the page
if(mWebviewPop!=null)
{
mWebviewPop.setVisibility(View.GONE);
mContainer.removeView(mWebviewPop);
mWebviewPop=null;
}
return false;
}if(host.equals("m.facebook.com"))
{
return false;
}
// Otherwise, the link is not for a page on my site, so launch
// another Activity that handles URLs
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
return true;
}@Override
public void onReceivedSslError(WebView view, SslErrorHandler handler,
SslError error) {
Log.d("onReceivedSslError", "onReceivedSslError");
//super.onReceivedSslError(view, handler, error);
}
}class UriChromeClient extends WebChromeClient {@Override
public boolean onCreateWindow(WebView view, boolean isDialog,
boolean isUserGesture, Message resultMsg) {
mWebviewPop = new WebView(mContext);
mWebviewPop.setVerticalScrollBarEnabled(false);
mWebviewPop.setHorizontalScrollBarEnabled(false);
mWebviewPop.setWebViewClient(new UriWebViewClient());
mWebviewPop.getSettings().setJavaScriptEnabled(true);
mWebviewPop.getSettings().setSavePassword(false);
mWebviewPop.setLayoutParams(new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
mContainer.addView(mWebviewPop);
WebView.WebViewTransport transport = (WebView.WebViewTransport) resultMsg.obj;
transport.setWebView(mWebviewPop);
resultMsg.sendToTarget();
return true;
}@Override
public void onCloseWindow(WebView window) {
Log.d("onCloseWindow", "called");
}}
}
这个问题的关键是onCreateWindow。创建一个新窗口并将其插入到框架布局中,并在成功时将其删除。我在shouldOverrideUrlLoading添加了删除。
另一答案这是一个Android项目示例:Github: Android_Popup_Webview_handler_example
这是一个Android Studio项目,展示了如何在Android Webview中处理弹出窗口。大多数开源浏览器不支持打开弹出窗口。
弹出窗口在许多网站(例如,www.feedly.com)中使用的OAuth登录中尤其重要。此项目中的弹出窗口在对话框中打开,可以通过关闭按钮或按Back或者弹出窗口自行关闭(如大多数登录身份验证流程中发生的情况)来解除。
另一答案关于the best answer到this question,您只需要实现您使用的WebViewClient类的onPageFinished方法。
public void onPageFinished(WebView view, String url) {
// First, get the URL that Facebook's login button is actually redirecting you to.
// It should be something simulator to https://www.facebook.com/dialog/return/arbiter?relation=opener&
close=true
String webUrl = webView.getUrl();
// Pass it to the LogCat so that you can then use it in the if statement below.
Log.d.println(TAG, webUrl);
if (url.startsWith("The url that you copied from the LogCat")) {
// Check whether the current URL is the URL that Facebook's redirecting you to.
// If it is - that's it - do what you want to after the logging process has finished.
return;
}super.onPageFinished(view, url);
}
它对我来说很好。希望它也可以帮助你:)
另一答案在你的
shouldOverrideUrlLoading()
中覆盖WebViewClient
。搜索shouldOverrideUrlLoading
here。此外,还有一个参数可以传递给Facebook的登录API;
我认为这是redirect_uri。这应该可以帮助您识别登录成功的时间,并且在shouldOVerrideUrlLoading()
中,您只需要检测正在加载的URL,如果它是您指定的redirect_uri,那么只需在该方法中返回true并关闭webview或任何您想要的内容登录成功时。另一答案以上答案太旧了,它不适用于最新的Facebook sdk 2.7版本。花了4个小时后,我发现它几乎没有变化。以下代码可以与最新的SDK一起使用。
下面提到的是XML布局文件。
<
FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0099cc"
tools:context=".MainActivity"
android:id="@+id/webview_frame">
<
WebView
android:id="@+id/webView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
<
/FrameLayout>
这是Android Activity代码段
public class MainActivity extends AppCompatActivity {private WebView webView;
private WebView mWebviewPop;
private FrameLayout mContainer;
private Context mContext;
private String url = "https://www.YourWebsiteAddress.com";
private String target_url_prefix = "www.YourWebsiteAddress.com";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Get outer container
mContainer = (FrameLayout) findViewById(R.id.webview_frame);
webView = (WebView)findViewById(R.id.webView);
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setDomStorageEnabled(true);
webSettings.setAppCacheEnabled(true);
webSettings.setJavaScriptCanOpenWindowsAutomatical
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