[Android] 基本FaceBook發布塗鴉牆功能

1. 將facebook專案加入lib

2. 設定manifest.xml

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

<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/app_id"/>
<activity android:name="com.facebook.LoginActivity"/>

3. 取得key hashes

C:\Program Files\Java\jdk1.6.0_37\bin>keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | "
C:\openssl-0.9.8k_X64\bin\openssl.exe" sha1 -binary | "C:\openssl-0.9.8k_X64\bin\openssl.exe" base64

4. button的onClick()實作login及發佈的功能

Session.openActiveSession(MainActivity.this, true, new Session.StatusCallback() {
			    	   
	@Override
	public void call(Session session, SessionState state,Exception exception) {
	    if (session.isOpened()) {
	        Log.d("fbt",session.getAccessToken()); // get token
	        publishFeedDialog();
	    }			    	
        }
			    	
});



private void publishFeedDialog() {
	    Bundle params = new Bundle();
	    params.putString("name", "Facebook SDK for Android");
	    params.putString("caption", "Build great social apps and get more installs.");
	    params.putString("description", "The Facebook SDK for Android makes it easier and faster to develop Facebook integrated Android apps.");
	    params.putString("link", "https://developers.facebook.com/android");
	    params.putString("picture", "https://raw.github.com/fbsamples/ios-3.x-howtos/master/Images/iossdk_logo.png");
	    
	    WebDialog feedDialog = (
	        new WebDialog.FeedDialogBuilder(MainActivity.this,
	        		Session.getActiveSession(),
	            params))
	        .setOnCompleteListener(new WebDialog.OnCompleteListener() {

	            @Override
	            public void onComplete(Bundle values,
	                FacebookException error) {
	                if (error == null) {
	                    // When the story is posted, echo the success
	                    // and the post Id.
	                    final String postId = values.getString("post_id");
	                    if (postId != null) {
	                        Toast.makeText(MainActivity.this,
	                            "Posted story, id: "+postId,
	                            Toast.LENGTH_SHORT).show();
	                    } else {
	                        // User clicked the Cancel button
	                        Toast.makeText(MainActivity.this, 
	                            "Publish cancelled", 
	                            Toast.LENGTH_SHORT).show();
	                    }
	                } else if (error instanceof FacebookOperationCanceledException) {
	                    // User clicked the "x" button
	                    Toast.makeText(MainActivity.this, 
	                        "Publish cancelled", 
	                        Toast.LENGTH_SHORT).show();
	                } else {
	                    // Generic, ex: network error
	                    Toast.makeText(MainActivity.this, 
	                        "Error posting story", 
	                        Toast.LENGTH_SHORT).show();
	                }
	            }

	        })
	        .build();
	    feedDialog.show();
	}