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我的代碼工作正常，但我有問題。當我再次點擊張貼在相同的清單項目獲得武力關閉。如果我點擊另一個列表項目將成功發佈。基本上不能再發布相同的text1沒有發佈其他文本並返回發佈text1。FaceBook：發佈相同的狀態到用戶牆上得到錯誤
private static final List<String> PERMISSIONS = Arrays.asList("publish_actions");
private static final String PENDING_PUBLISH_KEY = "pendingPublishReauthorization";
private boolean pendingPublishReauthorization = false;
private static final String TAG = "FaceBook";
private Boolean isShared;
private UiLifecycleHelper uiHelper;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view);
uiHelper = new UiLifecycleHelper(this, callback);
uiHelper.onCreate(savedInstanceState);
if (savedInstanceState != null) {
pendingPublishReauthorization = savedInstanceState.getBoolean(
PENDING_PUBLISH_KEY, false);
}
ls = (ListView) findViewById(android.R.id.list);
ls.setAdapter(new MyAdapter(this, android.R.layout.simple_list_item_1,
0, ITEMS));
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
uiHelper.onActivityResult(requestCode, resultCode, data, new FacebookDialog.Callback() {
@Override
public void onError(FacebookDialog.PendingCall pendingCall, Exception error, Bundle data) {
Log.e("Activity", String.format("Error: %s", error.toString()));
}
@Override
public void onComplete(FacebookDialog.PendingCall pendingCall, Bundle data) {
Log.i("Activity", "Success!");
}
});
}
private class MyAdapter extends ArrayAdapter<String> {
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
public MyAdapter(Context context, int resource, int textViewResourceId,
ArrayList<String> iTEMS) {
super(context, resource, textViewResourceId, iTEMS);
// TODO Auto-generated constructor stub
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
if (convertView == null) {
convertView = inflater.inflate(R.layout.view_item, parent,
false);
}
tv_content_item = (TextView) convertView
.findViewById(R.id.tv_content);
tv_content_item.setText(ITEMS.get(position));
tv_content_item.setTag(position);
tv_content_item.setTypeface(Typeface.createFromAsset(getAssets(),
"fonts/Hayah.otf"));
TextView tv_counter = (TextView) convertView
.findViewById(R.id.text_counter);
tv_counter.setText(String.valueOf(position + 1));
Button facebook = (Button) convertView
.findViewById(R.id.btn_share_face);
facebook.setOnClickListener(ViewActivity.this);
return convertView;
}
@Override
public String getItem(int position) {
// TODO Auto-generated method stub
return super.getItem(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return super.getItemId(position);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return ITEMS.size();
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
final TextView tv = (TextView) ls.findViewWithTag(ls
.getPositionForView(v));
switch (v.getId()) {
case R.id.btn_share_face:
if(!isShared){
Session.openActiveSession(this, true, new Session.StatusCallback() {
// callback when session changes state
@Override
public void call(Session session, SessionState state,
Exception exception) {
if (session.isOpened()) {
isShared=true;
publishStory(tv.getText().toString());
}
}
});
}else{
Session session = Session.getActiveSession();
if (session.isOpened()) {
publishStory(tv.getText().toString());
}
}
break;
}
}
@Override
protected void onResume() {
super.onResume();
uiHelper.onResume();
}
@Override
public void onPause() {
super.onPause();
uiHelper.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
uiHelper.onDestroy();
}
private Session.StatusCallback callback = new Session.StatusCallback() {
@Override
public void call(Session session, SessionState state, Exception exception) {
onSessionStateChange(session, state, exception);
}
};
private void onSessionStateChange(Session session, SessionState state, Exception exception) {
if (state.isOpened()) {
Log.i(TAG, "Logged in...");
} else if (state.isClosed()) {
Log.i(TAG, "Logged out...");
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putBoolean(PENDING_PUBLISH_KEY, pendingPublishReauthorization);
uiHelper.onSaveInstanceState(outState);
}
private void publishStory(String txt) {
Session session = Session.getActiveSession();
if (session != null){
// Check for publish permissions
List<String> permissions = session.getPermissions();
if (!isSubsetOf(PERMISSIONS, permissions)) {
pendingPublishReauthorization = true;
Session.NewPermissionsRequest newPermissionsRequest = new Session
.NewPermissionsRequest(this, PERMISSIONS);
session.requestNewPublishPermissions(newPermissionsRequest);
return;
}
Bundle postParams = new Bundle();
postParams.putString("message", txt);
Request.Callback callback= new Request.Callback() {
public void onCompleted(Response response) {
JSONObject graphResponse = response
.getGraphObject()
.getInnerJSONObject();
String postId = null;
try {
postId = graphResponse.getString("id");
} catch (JSONException e) {
Log.i(TAG,
"JSON error "+ e.getMessage());
}
FacebookRequestError error = response.getError();
if (error != null) {
Toast.makeText(ViewActivity.this
.getApplicationContext(),
error.getErrorMessage(),
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(ViewActivity.this
.getApplicationContext(),
postId,
Toast.LENGTH_LONG).show();
}
}
};
Request request = new Request(session, "me/feed", postParams,
HttpMethod.POST, callback);
RequestAsyncTask task = new RequestAsyncTask(request);
task.execute();
}
}
private boolean isSubsetOf(Collection<String> subset, Collection<String> superset) {
for (String string : subset) {
if (!superset.contains(string)) {
return false;
}
}
return true;
}
我logcat的
01-15 07:10:29.771: W/dalvikvm(4584): threadid=1: thread exiting with uncaught exception (group=0x41e8c898)
01-15 07:10:29.771: E/AndroidRuntime(4584): FATAL EXCEPTION: main
01-15 07:10:29.771: E/AndroidRuntime(4584): java.lang.NullPointerException
01-15 07:10:29.771: E/AndroidRuntime(4584): at com.droidibuilders.aqual_alolma.ViewActivity$4.onCompleted(ViewActivity.java:352)
01-15 07:10:29.771: E/AndroidRuntime(4584): at com.facebook.Request$4.run(Request.java:1669)
01-15 07:10:29.771: E/AndroidRuntime(4584): at android.os.Handler.handleCallback(Handler.java:730)
01-15 07:10:29.771: E/AndroidRuntime(4584): at android.os.Handler.dispatchMessage(Handler.java:92)
01-15 07:10:29.771: E/AndroidRuntime(4584): at android.os.Looper.loop(Looper.java:137)
01-15 07:10:29.771: E/AndroidRuntime(4584): at android.app.ActivityThread.main(ActivityThread.java:5450)
01-15 07:10:29.771: E/AndroidRuntime(4584): at java.lang.reflect.Method.invokeNative(Native Method)
01-15 07:10:29.771: E/AndroidRuntime(4584): at java.lang.reflect.Method.invoke(Method.java:525)
01-15 07:10:29.771: E/AndroidRuntime(4584): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1187)
01-15 07:10:29.771: E/AndroidRuntime(4584): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)
01-15 07:10:29.771: E/AndroidRuntime(4584): at dalvik.system.NativeStart.main(Native Method)
發佈您的logcat連同行號 –