正如标题所暗示的，我想通过facebook / twitter在android中分享一些内容。如果安装了facebook / twitter，我想通过fb / twitter应用程序分享帖子，否则我想直接发送给用户到浏览器。我可以将用户引导到浏览器很容易，但是如何通过fb / twitter应用程序共享帖子？
谢谢..
（Editted） 我试过这样做，检查了developers.facebook.com，但他们正在通过片段进行此操作。我想用默认活动来做。我已经尝试过下面的代码但是我得到的错误就像
W/dalvikvm(16093): VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
W/dalvikvm(16093): VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
W/dalvikvm(16093): VFY: unable to resolve static method 367: Landroid/support/v4/content/LocalBroadcastManager;.getInstance (Landroid/content/Context;)Landroid/support/v4/content/LocalBroadcastManager;
我在默认活动中使用的代码是：
private void publishStory() {
Session currentSession = Session.getActiveSession();
if (currentSession != null){
Bundle postParams = new Bundle();
postParams.putString("name", Commons.campaignname);
postParams.putString("display", "touch");
postParams.putString("link", Commons.campaignlink");
postParams.putString("picture",Commons.campaignimage);
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(getApplicationContext(),
error.getErrorMessage(),
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getApplicationContext(),
postId,
Toast.LENGTH_LONG).show();
}
}
};
Request request = new Request(currentSession, "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;
}
答案 0 :(得分：2)
使用Facebook发布内容而非整合Facebook android sdk
Getting Started with the Facebook SDK for Android
使用Feed对话框在Facebook上发布。它会自动打开fb app，如果它已安装，否则在浏览器中打开
public class PhotoViewer extends Activity implements StatusCallback{
Button btnShare;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_photo_viewer);
btnShare = (Button) findViewById(R.id.btnShare);
btnShare.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Session.openActiveSession(PhotoViewer.this, true, PhotoViewer.this);
}
});
}
@Override
public void call(Session session, SessionState state, Exception exception) {
if (session.isOpened()) {
publishFeedDialog();
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
}
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(PhotoViewer.this,
Session.getActiveSession(),
params))
.setOnCompleteListener(new 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(PhotoViewer.this,"Posted story, id: "+postId,Toast.LENGTH_SHORT).show();
Toast.makeText(getApplicationContext(), "Publish Successfully!", Toast.LENGTH_SHORT).show();
} else {
// User clicked the Cancel button
Toast.makeText(getApplicationContext(), "Publish cancelled", Toast.LENGTH_SHORT).show();
}
} else if (error instanceof FacebookOperationCanceledException) {
// User clicked the "x" button
Toast.makeText(getApplicationContext(), "Publish cancelled", Toast.LENGTH_SHORT).show();
} else {
// Generic, ex: network error
Toast.makeText(getApplicationContext(),"Error posting story",Toast.LENGTH_SHORT).show();
}
}
})
.build();
feedDialog.show();
}
}
如果你没有使用片段而不是使用像ClassName.this 这样的上下文而不是 getActivity（）
修改
请在onCreate（）中添加此代码以打印哈希键
// Add code to print out the key hash
PackageInfo info = getPackageManager().getPackageInfo("com.your.package", // replace with your package name
PackageManager.GET_SIGNATURES);
for (Signature signature : info.signatures) {
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(signature.toByteArray());
Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
}
答案 1 :(得分：0)
通过此代码，您可以检查设备上是否安装了facebook或twitter应用程序。 如果条件为假，你可以放置你的逻辑
final PackageManager pm = getPackageManager();
List<ApplicationInfo> packages = pm
.getInstalledApplications(PackageManager.GET_META_DATA);
for (ApplicationInfo packageInfo : packages) {
Log.d(TAG, "Installed package : " + packageInfo.packageName);
}
然后，您可以检查packageInfo.packageName是否等于包含该应用程序包名称的某个字符串。