Android Facebook Graph API to update status
我尝试使用Android的Facebook图形API更新状态http://developers.facebook.com/docs/reference/api/status/所以，我的问题是如果你可以给我一些示例代码来更新状态使用这个API。
Okay, This may not be a perfect code, but it works for now. You'll have to modify how and when it is called to get a better user Experience:
//Implementing SSO
facebook.authorize(this, new String[]{"publish_stream"}, new DialogListener(){
@Override
public void onComplete(Bundle values) {
updateStatus(values.getString(Facebook.TOKEN));
}
@Override
public void onFacebookError(FacebookError e) {
Log.d("FACEBOOK ERROR","FB ERROR. MSG: "+e.getMessage()+", CAUSE: "+e.getCause());
}
@Override
public void onError(DialogError e) {
Log.e("ERROR","AUTH ERROR. MSG: "+e.getMessage()+", CAUSE: "+e.getCause());
}
@Override
public void onCancel() {
Log.d("CANCELLED","AUTH CANCELLED");
}
});
This is the function that updates:
//updating Status
public void updateStatus(String accessToken){
try {
Bundle bundle = new Bundle();
bundle.putString("message", "test update");
bundle.putString(Facebook.TOKEN,accessToken);
String response = facebook.request("me/feed",bundle,"POST");
Log.d("UPDATE RESPONSE",""+response);
} catch (MalformedURLException e) {
Log.e("MALFORMED URL",""+e.getMessage());
} catch (IOException e) {
Log.e("IOEX",""+e.getMessage());
}
}
I hope it helps.
Here is my complete solution using the Graph API
If all you intend to do is update the users status you only need to get the "publish_stream" permission. From developers.facebook.com... "publish_stream": Enables your app to post content, comments, and likes to a user's stream and to the streams of the user's friends. With this permission, you can publish content to a user's feed at any time, without requiring offline_access . However, please note that Facebook recommends a user-initiated sharing model.
This is important because it means you do not need to re-authorize every time you attempt to update the status. The trick is to save the key/token and send it with any update request.
One note: I changed "Facebook.DEFAULT_AUTH_ACTIVITY_CODE" from private to public in the Facebook.java class.
My code has two buttons one that checks for a saved token and one that just sends a blank token so I could test what happens if the token fails for some reason. If it does fail, and the API returns a string with "OAuthException" this code makes a new attempt to authorize, then tries to update the status again.
FBTest.java
package com.test.FBTest;
import java.io.IOException;
import java.net.MalformedURLException;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.facebook.android.DialogError;
import com.facebook.android.Facebook;
import com.facebook.android.FacebookError;
import com.facebook.android.Facebook.DialogListener;
public class FBTest extends Activity {
Facebook facebook = new Facebook("199064386804603");
EditText et1;
TextView tv1;
Button button1;
Button button2;
private int mAuthAttempts = 0;
private String mFacebookToken;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
button1 = (Button)findViewById(R.id.Button1);
button2 = (Button)findViewById(R.id.Button2);
tv1 = (TextView)findViewById(R.id.TextView1);
et1 = (EditText)findViewById(R.id.EditText1);
button1.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
b1Click();
}
});
button2.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
b2Click();
}
});
}
private void saveFBToken(String token, long tokenExpires){
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
prefs.edit().putString("FacebookToken", token).commit();
}
private void fbAuthAndPost(final String message){
facebook.authorize(this, new String[]{"publish_stream"}, new DialogListener() {
@Override
public void onComplete(Bundle values) {
Log.d(this.getClass().getName(),"Facebook.authorize Complete: ");
saveFBToken(facebook.getAccessToken(), facebook.getAccessExpires());
updateStatus(values.getString(Facebook.TOKEN), message);
}
@Override
public void onFacebookError(FacebookError error) {
Log.d(this.getClass().getName(),"Facebook.authorize Error: "+error.toString());
}
@Override
public void onError(DialogError e) {
Log.d(this.getClass().getName(),"Facebook.authorize DialogError: "+e.toString());
}
@Override
public void onCancel() {
Log.d(this.getClass().getName(),"Facebook authorization canceled");
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode,Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode){
case Facebook.DEFAULT_AUTH_ACTIVITY_CODE:
facebook.authorizeCallback(requestCode, resultCode, data);
}
}
private void b1Click(){
mAuthAttempts = 0;
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
mFacebookToken = prefs.getString("FacebookToken", "");
if(mFacebookToken.equals("")){
fbAuthAndPost(et1.getText().toString());
}else{
updateStatus(mFacebookToken,et1.getText().toString());
}
}
private void b2Click(){
mAuthAttempts = 0;
updateStatus("",et1.getText().toString());
}
public void updateStatus(String accessToken, String message){
try {
Bundle bundle = new Bundle();
bundle.putString("message", message);
bundle.putString(Facebook.TOKEN,accessToken);
String response = facebook.request("me/feed",bundle,"POST");
Log.d("UPDATE RESPONSE",""+response);
showToast("Update process complete. Respose:"+response);
if(response.indexOf("OAuthException") > -1){
if(mAuthAttempts==0){
mAuthAttempts++;
fbAuthAndPost(message);
}else{
showToast("OAuthException:");
}
}
} catch (MalformedURLException e) {
Log.e("MALFORMED URL",""+e.getMessage());
showToast("MalformedURLException:"+e.getMessage());
} catch (IOException e) {
Log.e("IOEX",""+e.getMessage());
showToast("IOException:"+e.getMessage());
}
String s = facebook.getAccessToken()+"n";
s += String.valueOf(facebook.getAccessExpires())+"n";
s += "Now:"+String.valueOf(System.currentTimeMillis())+"n";
tv1.setText(s);
}
private void showToast(String message){
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
}
}
main.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"
>
<EditText
android:id="@+id/EditText1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<Button
android:id="@+id/Button1"
android:text="Test: With Auth"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<Button
android:id="@+id/Button2"
android:text="Test: Without Auth"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/TextView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
</LinearLayout>