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所以我花了整整一个早上试图为我的应用程序实现一个Facebook共享按钮，我不完全明白它的工作原理。Android - 如何正确实施Facebook分享？
我试图按照本指南：https://developers.facebook.com/docs/android/share
的“getActivity（）”（其中5人在的onComplete）方法给出错误“无法解析法‘getActivity（）’，我迷路了现在做什么我已经试过标记与Facebook共享有关的所有内容以便更容易阅读这里我可以补充说，在添加共享功能之前，一切工作都很完美我可能已经将代码放入错误的地方或误解了指南，所以任何额外的指导将不胜感激。
Results.java
package com.example.xxx.zzz;
import android.content.Intent;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
//START: FACEBOOK - SHARE
import com.facebook.FacebookException;
import com.facebook.FacebookOperationCanceledException;
import com.facebook.Session;
import com.facebook.UiLifecycleHelper;
import com.facebook.widget.FacebookDialog;
import com.facebook.widget.WebDialog;
//END: FACEBOOK - SHARE
public class Results extends FragmentActivity {
//START: FACEBOOK - SHARE
private UiLifecycleHelper uiHelper;
//END: FACEBOOK - SHARE
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
//START: FACEBOOK - SHARE
uiHelper = new UiLifecycleHelper(this, null);
uiHelper.onCreate(savedInstanceState);
//END: FACEBOOK - SHARE
themeUtils.onActivityCreateSetTheme(this);
setContentView(R.layout.activity_results);
Bundle BMIData = getIntent().getExtras();
if (BMIData == null) {
return;
}
String BMIMessage = BMIData.getString("BMIMessage");
String BMIText = BMIData.getString("BMIText");
final TextView ResultBMITextView = (TextView) findViewById(R.id.ResultBMITextView);
final TextView ResultBMITextTextView = (TextView) findViewById(R.id.ResultBMITextTextView);
ResultBMITextView.setText(BMIMessage);
ResultBMITextTextView.setText(BMIText);
}
public void onClickResultsBack(View view) {
Intent i1 = new Intent(this, MainActivity.class);
i1.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(i1);
finish();
}
//START: FACEBOOK - SHARE
public void onClickShare() {
if (FacebookDialog.canPresentShareDialog(getApplicationContext(),
FacebookDialog.ShareDialogFeature.SHARE_DIALOG)) {
FacebookDialog shareDialog = new FacebookDialog.ShareDialogBuilder(this)
.setLink("https://developers.facebook.com/android")
.build();
uiHelper.trackPendingDialogCall(shareDialog.present());
} else {
FacebookDialog shareDialog = new FacebookDialog.ShareDialogBuilder(this)
.setLink("https://developers.facebook.com/android")
.build();
uiHelper.trackPendingDialogCall(shareDialog.present());
}
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(getActivity(),
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(getActivity(),
"Posted story, id: " + postId,
Toast.LENGTH_SHORT).show();
} else {
// User clicked the Cancel button
Toast.makeText(getActivity().getApplicationContext(),
"Publish cancelled",
Toast.LENGTH_SHORT).show();
}
} else if (error instanceof FacebookOperationCanceledException) {
// User clicked the "x" button
Toast.makeText(getActivity().getApplicationContext(),
"Publish cancelled",
Toast.LENGTH_SHORT).show();
} else {
// Generic, ex: network error
Toast.makeText(getActivity().getApplicationContext(),
"Error posting story",
Toast.LENGTH_SHORT).show();
}
}
})
.build();
feedDialog.show();
}
@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!");
}
});
}
@Override
protected void onResume() {
super.onResume();
uiHelper.onResume();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
uiHelper.onSaveInstanceState(outState);
}
@Override
public void onPause() {
super.onPause();
uiHelper.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
uiHelper.onDestroy();
}
//END: FACEBOOK - SHARE
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_u, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
activity_results.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context="com.example.xxx.zzz.Results">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/ResultsBackButtonString"
android:id="@+id/ResultsBackButton"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:onClick="onClickResultsBack"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="BMI: "
android:id="@+id/ResultTitleTextView"
android:layout_alignParentTop="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="@+id/ResultBMITextView"
android:text="22.5"
android:layout_alignParentTop="true"
android:layout_toRightOf="@+id/ResultTitleTextView"
android:layout_toEndOf="@+id/ResultTitleTextView" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:id="@+id/ResultBMITextTextView"
android:layout_marginTop="20dp"
android:layout_below="@+id/ResultTitleTextView"
android:layout_alignLeft="@+id/ResultTitleTextView"
android:layout_alignStart="@+id/ResultTitleTextView" />
<com.facebook.widget.LoginButton
android:id="@+id/authButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:onClick="onClickShare" />
>
</RelativeLayout>