问题
I want to integrate foursquare in android. So i tried two examples.
First Example:
public class ActivityWebView extends Activity
{
private static final String TAG = "ActivityWebView";
/**
* Get these values after registering your oauth app at: https://foursquare.com/oauth/
*/
public static final String CLIENT_ID = "";
public static final String OAUTH_CALLBACK_SCHEME = "x-oauthflow-foursquare";
public static final String OAUTH_CALLBACK_HOST = "callback";
public static final String CALLBACK_URL = OAUTH_CALLBACK_SCHEME + "://" + OAUTH_CALLBACK_HOST;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_webview);
String url =
"https://foursquare.com/oauth2/authenticate" +
"?client_id=" + CLIENT_ID +
"&response_type=token" +
"&redirect_uri=" + CALLBACK_URL;
// If authentication works, we'll get redirected to a url with a pattern like:
//
// http://YOUR_REGISTERED_REDIRECT_URI/#access_token=ACCESS_TOKEN
//
// We can override onPageStarted() in the web client and grab the token out.
WebView webview = (WebView)findViewById(R.id.webview);
webview.getSettings().setJavaScriptEnabled(true);
webview.setWebViewClient(new WebViewClient() {
public void onPageStarted(WebView view, String url, Bitmap favicon) {
String fragment = "#access_token=";
int start = url.indexOf(fragment);
if (start > -1) {
// You can use the accessToken for api calls now.
String accessToken = url.substring(start + fragment.length(), url.length());
Log.v(TAG, "OAuth complete, token: [" + accessToken + "].");
Toast.makeText(ActivityWebView.this, "Token: " + accessToken, Toast.LENGTH_SHORT).show();
}
}
});
webview.loadUrl(url);
}
}
Second Example :
http://blog.doityourselfandroid.com/2011/09/05/integrate-foursquare-android-application/
And i added additional code in Manifest file
<activity android:name=".ActivityWebView" android:launchMode="singleTask" android:noHistory="true">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="x-oauthflow-foursquare" android:host="callback" />
</intent-filter>
</activity>
after run the two applications Authentication was success but it shows web view with this message
you dont have permission to open this page x-oauthflow-foursquare://callback#access_token=DRWDP004zzAIZ1PPJEANEBFCM3NZJ1T414U2Z
So please tell me is it need add any extra permissions. Please solve my problem.
回答1:
Check this code for Authentication Part and Callback Part using Foursquare API:
public class ActivityMain extends Activity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btn = (Button)findViewById(R.id.button);
btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(ActivityMain.this, ActivityWebView.class);
startActivity(intent);
}
});
}
}
ActivityWebView.Java : After Button clicked :
public class ActivityWebView extends Activity{
private static final String TAG = "ActivityWebView";
public static final String CLIENT_ID = "01QWBUR2UUFSMMLZXOM5YY0UWCM4BC0F2IOZDJ0S5XGOINQM";
public static final String OAUTH_CALLBACK_SCHEME = "x-oauthflow-foursquare";
public static final String OAUTH_CALLBACK_HOST = "callback";
public static final String CALLBACK_URL = OAUTH_CALLBACK_SCHEME + "://" + OAUTH_CALLBACK_HOST;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_webview);
String url =
"https://foursquare.com/oauth2/authenticate" +
"?client_id=" + CLIENT_ID +
"&response_type=token" +
"&redirect_uri=" + CALLBACK_URL;
WebView webview = (WebView)findViewById(R.id.webview);
webview.getSettings().setJavaScriptEnabled(true);
webview.setWebViewClient(new WebViewClient() {
public void onPageStarted(WebView view, String url, Bitmap favicon) {
String fragment = "#access_token=";
int start = url.indexOf(fragment);
if (start > -1) {
// You can use the accessToken for api calls now.
String accessToken = url.substring(start + fragment.length(), url.length());
Log.v(TAG, "OAuth complete, token: [" + accessToken + "].");
Toast.makeText(ActivityWebView.this, "Token: " + accessToken, Toast.LENGTH_SHORT).show();
editor.putString("Access_Token", accessToken);
editor.commit();
startActivity(new Intent(ActivityWebView.this,Nearest_Places_View.class)); // After Successfull Login the Web view will Redirected to Nearest_Places_View Activity
}
}
});
webview.loadUrl(url);
}
}
activity_webview.xml :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<WebView
android:id="@+id/webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</LinearLayout>
Activity after Callback :
public class Nearest_Places_View extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.anylayout);
// Do your All stuff for Foursquare for example getting User Checkins,Nearest Place
}
}
You manifest file should look like this :
<?xml version="1.0" encoding="utf-8"?>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
package="com.foursquare.android.oauth"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="4" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".ActivityMain" android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Nearest_Places_View"
/>
<activity android:name=".ActivityWebView" android:launchMode="singleTask">>
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="x-oauthflow-foursquare" android:host="callback" />
</intent-filter>
</activity>
Call back should be same for all the three 1. Activity 2.manifest 3.Settings Page. then only it will work.
来源：https://stackoverflow.com/questions/7845361/foursquare-integration-in-android