我已经搜索了google和stackoverflow，但我找不到解决方案。 我正在尝试将Facebook整合到我的应用程序中，以便用户可以直接通过我的应用程序推荐新的啤酒品牌到我的脸书粉丝页面。因为现在我每天都会收到3封电子邮件，用户会推荐新的啤酒品牌。
我做了什么： - 创建了一个Facebook开发者帐户，启用了原生Android应用程序并插入了Key-Hash等。 - 下载并整合了facebook sdk。 - addet互联网许可 - 集成了以下的facebook助手类：
package com.celticwolf.nsod; //changed
import com.facebook.android.*;
import com.facebook.android.Facebook.DialogListener;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.Toast;
public class ShareOnFacebook extends Activity{
private static final String APP_ID = "35253892647899"; // changed
private static final String[] PERMISSIONS = new String[] {"publish_stream"};
private static final String TOKEN = "access_token";
private static final String EXPIRES = "expires_in";
private static final String KEY = "facebook-credentials";
private Facebook facebook;
private String messageToPost;
public boolean saveCredentials(Facebook facebook) {
Editor editor = getApplicationContext().getSharedPreferences(KEY, Context.MODE_PRIVATE).edit();
editor.putString(TOKEN, facebook.getAccessToken());
editor.putLong(EXPIRES, facebook.getAccessExpires());
return editor.commit();
}
public boolean restoreCredentials(Facebook facebook) {
SharedPreferences sharedPreferences = getApplicationContext().getSharedPreferences(KEY, Context.MODE_PRIVATE);
facebook.setAccessToken(sharedPreferences.getString(TOKEN, null));
facebook.setAccessExpires(sharedPreferences.getLong(EXPIRES, 0));
return facebook.isSessionValid();
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
facebook = new Facebook(APP_ID);
restoreCredentials(facebook);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.facebook_dialog);
String facebookMessage = getIntent().getStringExtra("facebookMessage");
if (facebookMessage == null){
facebookMessage = "Test wall post";
}
messageToPost = facebookMessage;
}
public void doNotShare(View button){
finish();
}
public void share(View button){
if (! facebook.isSessionValid()) {
loginAndPostToWall();
}
else {
postToWall(messageToPost);
}
}
public void loginAndPostToWall(){
facebook.authorize(this, PERMISSIONS, Facebook.FORCE_DIALOG_AUTH, new LoginDialogListener());
}
public void postToWall(String message){
Bundle parameters = new Bundle();
parameters.putString("message", message);
parameters.putString("description", "topic share");
try {
facebook.request("me"); // <------ here it fails
String response = facebook.request("me/feed", parameters, "POST");
Log.d("Tests", "got response: " + response);
if (response == null || response.equals("") ||
response.equals("false")) {
showToast("Blank response.");
}
else {
showToast("Message posted to your facebook wall!");
}
finish();
} catch (Exception e) {
showToast("Failed to post to wall!");
e.printStackTrace();
finish();
}
}
class LoginDialogListener implements DialogListener {
public void onComplete(Bundle values) {
saveCredentials(facebook);
if (messageToPost != null){
postToWall(messageToPost);
}
}
public void onFacebookError(FacebookError error) {
showToast("Authentication with Facebook failed!");
finish();
}
public void onError(DialogError error) {
showToast("Authentication with Facebook failed!");
finish();
}
public void onCancel() {
showToast("Authentication with Facebook cancelled!");
finish();
}
}
private void showToast(String message){
Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT).show();
}
}
我已经添加以下代码来访问帮助程序类：
private void shareonfb(){
Intent postOnFacebookWallIntent = new Intent(this, ShareOnFacebook.class);
postOnFacebookWallIntent.putExtra("facebookMessage", "Teeeeeeeeeeeest");
startActivity(postOnFacebookWallIntent);
}
失败的地方： - 我可以登录到facebook，但是当它询问我是否想要在以下代码块中分享时失败：
public void postToWall(String message){
Bundle parameters = new Bundle();
parameters.putString("message", message);
parameters.putString("description", "topic share");
try {
facebook.request("me"); // <------------- here it fails and jups to catch
String response = facebook.request("me/feed", parameters, "POST");
Log.d("Tests", "got response: " + response);
if (response == null || response.equals("") ||
response.equals("false")) {
showToast("Blank response.");
}
else {
showToast("Message posted to your facebook wall!");
}
finish();
} catch (Exception e) {
showToast("Failed to post to wall!");
e.printStackTrace();
finish();
}
}
这是日志:(我已标记失败的部分）
01-06 13:19:53.795: W/ActivityThread(1220): Application com.celticwolf.alex is waiting for the debugger on port 8100...
01-06 13:19:53.805: I/System.out(1220): Sending WAIT chunk
01-06 13:19:54.205: I/System.out(1220): Debugger has connected
01-06 13:19:54.205: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:54.405: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:54.615: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:54.820: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:55.250: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:55.450: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:55.650: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:55.850: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:56.050: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:56.250: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:56.450: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:56.650: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:56.850: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:57.050: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:57.255: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:57.455: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:57.655: I/System.out(1220): waiting for debugger to settle...
01-06 13:19:57.855: I/System.out(1220): debugger has settled (1373)
01-06 13:19:58.285: I/dalvikvm-heap(1220): Grow heap (frag case) to 7.205MB for 3502096-byte allocation
01-06 13:19:58.400: I/dalvikvm-heap(1220): Grow heap (frag case) to 13.139MB for 6224656-byte allocation
01-06 13:19:58.575: I/MediaPlayer(1220): setLPAflag() in
01-06 13:19:58.575: I/MediaPlayer(1220): mContext is null, can't getMirrorDisplayStatus!!!
01-06 13:19:58.575: I/MediaPlayer(1220): setLPAflag() out
01-06 13:19:58.585: W/MediaPlayer(1220): info/warning (1, 902)
01-06 13:19:58.585: D/MediaPlayer(1220): [DLNA]contentType = 902
01-06 13:19:58.585: D/MediaPlayer(1220): doStart() in
01-06 13:19:58.590: D/MediaPlayer(1220): getIntParameter = 902
01-06 13:19:58.665: D/MediaPlayer(1220): Mediaplayer receives message, message type: 200
01-06 13:19:58.665: I/MediaPlayer(1220): Info (1,902)
01-06 13:19:58.665: D/MediaPlayer(1220): Mediaplayer receives message, message type: 5
01-06 13:19:58.665: D/MediaPlayer(1220): Mediaplayer receives message, message type: 1
01-06 13:19:58.745: E/(1220): file /data/data/com.nvidia.NvCPLSvc/files/driverlist.txt: not found!
01-06 13:19:58.745: I/(1220): Attempting to load EGL implementation /system/lib//egl/libEGL_tegra_impl
01-06 13:19:58.805: I/(1220): Loaded EGL implementation /system/lib//egl/libEGL_tegra_impl
01-06 13:19:58.905: I/(1220): Loading GLESv2 implementation /system/lib//egl/libGLESv2_tegra_impl
01-06 13:19:59.350: D/MediaPlayer(1220): Mediaplayer receives message, message type: 2
01-06 13:20:00.200: D/MediaPlayer(1220): release() in
01-06 13:20:00.210: D/MediaPlayer(1220): release() out
01-06 13:20:00.745: W/MediaPlayer-JNI(1220): MediaPlayer finalized without being released
01-06 13:20:00.745: I/dalvikvm-heap(1220): Grow heap (frag case) to 15.433MB for 3317776-byte allocation
01-06 13:20:40.855: D/View(1220): ACTION_DOWN before UnsetPressedState. invoking mUnsetPressedState.run()
01-06 13:20:40.870: I/Choreographer(1220): Skipped 1158 frames! The application may be doing too much work on its main thread.
01-06 13:20:43.810: E/SpannableStringBuilder(1220): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
01-06 13:20:43.810: E/SpannableStringBuilder(1220): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
01-06 13:20:43.975: E/SpannableStringBuilder(1220): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
01-06 13:20:43.975: E/SpannableStringBuilder(1220): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
01-06 13:20:45.150: E/SpannableStringBuilder(1220): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
01-06 13:20:45.150: E/SpannableStringBuilder(1220): SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length
01-06 13:21:40.920: D/Facebook-Util(1220): GET URL: https://graph.facebook.com/me?access_token=AAAFAqIQXNsUBAE18DxmYZCvB9uLEFUSeQEMp3hZASDnjOMllu1Q0BqSTYEoGVEvjZAp8l18eZCt8ZArlPwQ5A08SijSFF00imS2JDO0A9MAZDZD&format=json
01-06 13:21:51.180: W/System.err(1220): android.os.NetworkOnMainThreadException <--- at this point it fails
01-06 13:21:51.215: W/System.err(1220): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1208)
01-06 13:21:51.215: W/System.err(1220): at java.net.InetAddress.lookupHostByName(InetAddress.java:388)
01-06 13:21:51.220: W/System.err(1220): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:239)
01-06 13:21:51.220: W/System.err(1220): at java.net.InetAddress.getAllByName(InetAddress.java:214)
01-06 13:21:51.225: W/System.err(1220): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:70)
01-06 13:21:51.225: W/System.err(1220): at libcore.net.http.HttpConnection.<init>(HttpConnection.java:50)
01-06 13:21:51.230: W/System.err(1220): at libcore.net.http.HttpConnection$Address.connect(HttpConnection.java:340)
01-06 13:21:51.230: W/System.err(1220): at libcore.net.http.HttpConnectionPool.get(HttpConnectionPool.java:87)
01-06 13:21:51.235: W/System.err(1220): at libcore.net.http.HttpConnection.connect(HttpConnection.java:128)
01-06 13:21:51.235: W/System.err(1220): at libcore.net.http.HttpEngine.openSocketConnection(HttpEngine.java:315)
01-06 13:21:51.240: W/System.err(1220): at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:461)
01-06 13:21:51.240: W/System.err(1220): at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.connect(HttpsURLConnectionImpl.java:433)
01-06 13:21:51.245: W/System.err(1220): at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:289)
01-06 13:21:51.245: W/System.err(1220): at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:239)
01-06 13:21:51.250: W/System.err(1220): at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273)
01-06 13:21:51.255: W/System.err(1220): at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:168)
01-06 13:21:51.255: W/System.err(1220): at libcore.net.http.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:271)
01-06 13:21:51.255: W/System.err(1220): at com.facebook.android.Util.openUrl(Util.java:219)
01-06 13:21:51.260: W/System.err(1220): at com.facebook.android.Facebook.requestImpl(Facebook.java:806)
01-06 13:21:51.260: W/System.err(1220): at com.facebook.android.Facebook.request(Facebook.java:732)
01-06 13:21:51.265: W/System.err(1220): at com.celticwolf.alex.ShareOnFacebook.postToWall(ShareOnFacebook.java:81)
01-06 13:21:51.265: W/System.err(1220): at com.celticwolf.alex.ShareOnFacebook.share(ShareOnFacebook.java:68)
01-06 13:21:51.265: W/System.err(1220): at java.lang.reflect.Method.invokeNative(Native Method)
01-06 13:21:51.265: W/System.err(1220): at java.lang.reflect.Method.invoke(Method.java:511)
01-06 13:21:51.270: W/System.err(1220): at android.view.View$1.onClick(View.java:3603)
01-06 13:21:51.270: W/System.err(1220): at android.view.View.performClick(View.java:4101)
01-06 13:21:51.270: W/System.err(1220): at android.view.View$PerformClick.run(View.java:17078)
01-06 13:21:51.275: W/System.err(1220): at android.os.Handler.handleCallback(Handler.java:615)
01-06 13:21:51.275: W/System.err(1220): at android.os.Handler.dispatchMessage(Handler.java:92)
01-06 13:21:51.275: W/System.err(1220): at android.os.Looper.loop(Looper.java:155)
01-06 13:21:51.280: W/System.err(1220): at android.app.ActivityThread.main(ActivityThread.java:5485)
01-06 13:21:51.280: W/System.err(1220): at java.lang.reflect.Method.invokeNative(Native Method)
01-06 13:21:51.280: W/System.err(1220): at java.lang.reflect.Method.invoke(Method.java:511)
01-06 13:21:51.285: W/System.err(1220): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
01-06 13:21:51.285: W/System.err(1220): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:795)
01-06 13:21:51.285: W/System.err(1220): at dalvik.system.NativeStart.main(Native Method)
谢谢！
答案 0 :(得分：2)
自从android 3.0 AFAIK以来，您无法在主线程中进行网络操作。
将您的来电置于sperate线程中，如果您需要更新UI，请使用handlers或AsyncTask
示例：
class MyAsyncTask extends AsyncTask<String,Void,Boolean>
{
public Boolean doInBackground(String ...message){
Bundle parameters = new Bundle();
parameters.putString("message", message[0]);
parameters.putString("description", "topic share");
try {
facebook.request("me"); // <------------- here it fails and jups to catch
String response = facebook.request("me/feed", parameters, "POST");
Log.d("Tests", "got response: " + response);
if (response == null || response.equals("") ||
response.equals("false")) {
return Boolean.FALSE;
}
else {
return Boolean.TRUE;
}
} catch (Exception e) {
e.printStackTrace();
return Boolean.FALSE;
}
}
public void onPostExecute(Boolean result){
if(result == Boolean.TRUE){
showToast("posted successfully");
}else{
showToast("couldn't post to FB.");
}
finish();
}
}