分享至Facebook，通过共享意图的Android叽叽喳喳(Sharing to facebook

目前我正在试图分享文字发送到Gmail，Facebook和Twitter。我使用份额的意图方法来共享。下面是我使用的共享代码

Intent sharingIntent = new Intent(Intent.ACTION_SEND);
       sharingIntent.setType("plain/text");
       sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, "My text");
       startActivity(Intent.createChooser(sharingIntent,"Share using"));

上面的代码只能说明股票期权，如Gmail和Skype。为什么没有在列表中显示Facebook和Twitter的选择，即使我已经安装在我的设备的Facebook和Twitter的应用程序？

Answer 1:

我不知道是否有人还在读这一点，但如果人们仍然在寻找我发现了一个更简单的答案：

List<Intent> targetedShareIntents = new ArrayList<Intent>();

Intent facebookIntent = getShareIntent("facebook", "subject", "text");
if(facebookIntent != null)
    targetedShareIntents.add(facebookIntent);

Intent twitterIntent = getShareIntent("twitter", "subject", "text");
    if(twitterIntent != null)
        targetedShareIntents.add(twitterIntent);

Intent gmailIntent = getShareIntent("gmail", "subject", "text");
    if(gmailIntent != null)
        targetedShareIntents.add(gmailIntent);

Intent chooser = Intent.createChooser(targetedShareIntents.remove(0), "Delen");

chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedShareIntents.toArray(new Parcelable[]{}));

startActivity(chooser);

而getShareIntent方法（该方法通过MIME类型文档的搜索/平原，您可以使用其他MIME类型，通过这些类型搜索或使用/ * /通过各类搜索：

private Intent getShareIntent(String type, String subject, String text) 
{
    boolean found = false;
    Intent share = new Intent(android.content.Intent.ACTION_SEND);
    share.setType("text/plain");

    // gets the list of intents that can be loaded.
    List<ResolveInfo> resInfo = getActivity().getPackageManager().queryIntentActivities(share, 0);
    System.out.println("resinfo: " + resInfo);
    if (!resInfo.isEmpty()){
        for (ResolveInfo info : resInfo) {
            if (info.activityInfo.packageName.toLowerCase().contains(type) || 
                    info.activityInfo.name.toLowerCase().contains(type) ) {
                share.putExtra(Intent.EXTRA_SUBJECT,  subject);
                share.putExtra(Intent.EXTRA_TEXT,     text);
                share.setPackage(info.activityInfo.packageName);
                found = true;
                break;
            }
        }
        if (!found)
            return null;

        return share;
    }
    return null;
}

如果你不想使用此方法，你可以创建这样的意图：

Intent normalIntent = new Intent(Intent.ACTION_SEND);
normalIntent.setType("text/plain");
normalIntent.setPackage("com.katana.facebook"); // I just know the package of Facebook, the rest you will have to search for or use my method.
normalIntent.putExtra(Intent.EXTRA_TEXT, "The text you want to share to Facebook");

Answer 2:

与Facebook共享有，只接受在EXTRA_TEXT的URL的问题。然后本机FB应用程序将从这个URL抓取文本和图像组成的帖子。这不是一个“错误”，但预期的行为，他们给的官方应用： - /

考虑到Twitter将只接受text / plain的，没有任何标记并在最大144个字符。

我做了我自己的“共享”对话框拦截所有不同的行为，并给他们接受每一个目标的意图：HTML，纯文本，URL FB和Twitter简短的文字。

这里谈到的代码：

public class ShareHelper implements AdapterView.OnItemClickListener {
            private static final String TAG = ShareHelper.class.getSimpleName();

            private Activity mContext;
            private Dialog mDialog;
            private LayoutInflater mInflater;
            private GridView mGrid;


   private ShareIntentAdapter mAdapter;
        private int mMaxColumns;

        private List<ResolveInfo> plainTextActivities;
        private Set<String> htmlActivitiesPackages;

        private String subject;
        private String textbody;
        private CharSequence htmlbody;
        private String twitterBody;
        private String facebookBody;

        public ShareHelper(Activity context, String subject, String textbody, CharSequence htmlbody, String twitterBody, String facebookBody) {
            this.mContext = context;

            this.subject = subject;
            this.textbody = textbody;
            this.htmlbody = htmlbody;
            this.twitterBody = twitterBody;
            this.facebookBody = facebookBody;
        }

        @SuppressLint("NewApi")
        public void share() {

            this.mInflater = LayoutInflater.from(mContext);

            final Intent sendIntent = new Intent(android.content.Intent.ACTION_SEND);

            sendIntent.setType(HTTP.PLAIN_TEXT_TYPE);
            plainTextActivities = mContext.getPackageManager().queryIntentActivities(sendIntent, 0);

            if (plainTextActivities.size() > 0) { 
                htmlActivitiesPackages = new HashSet<String>();
                sendIntent.setType("text/html");
                final List<ResolveInfo> htmlActivities = mContext.getPackageManager().queryIntentActivities(sendIntent, 0);
                for (ResolveInfo resolveInfo : htmlActivities) {
                    htmlActivitiesPackages.add(resolveInfo.activityInfo.packageName);
                }

                mAdapter = new ShareIntentAdapter();

                final View chooserView = mInflater.inflate(R.layout.dialog_share_us_chooser, null);
                mGrid = (GridView) chooserView.findViewById(R.id.resolver_grid);
                mGrid.setAdapter(mAdapter);
                mGrid.setOnItemClickListener(this);

                mMaxColumns = mContext.getResources().getInteger(R.integer.maxResolverActivityColumns);
                mGrid.setNumColumns(Math.min(plainTextActivities.size(), mMaxColumns));

                AlertDialog.Builder builder;
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                    builder = new AlertDialog.Builder(mContext, AlertDialog.THEME_DEVICE_DEFAULT_LIGHT);
                } else {
                    builder = new AlertDialog.Builder(mContext);
                }
                builder.setTitle(R.string.text_share_us_title);
                builder.setView(chooserView);

                mDialog = builder.create();
                mDialog.show();
            } else {
                Toast.makeText(mContext, "No social apps installed to share ChurchLink!", Toast.LENGTH_LONG).show();
            }
        }

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

            ResolveInfo info = (ResolveInfo) mAdapter.getItem(position);

            Intent intent = new Intent(android.content.Intent.ACTION_SEND);
            intent.setClassName(info.activityInfo.packageName, info.activityInfo.name);
            intent.setType("text/plain");
            intent.putExtra(Intent.EXTRA_TITLE, subject);
            intent.putExtra(Intent.EXTRA_SUBJECT, subject);

            if (info.activityInfo.packageName.contains("facebook")) {
                intent.putExtra(Intent.EXTRA_TEXT, facebookBody);

            } else if (info.activityInfo.packageName.contains("twitter")) {
                intent.putExtra(Intent.EXTRA_TEXT, twitterBody);

            } else if (htmlActivitiesPackages.contains(info.activityInfo.packageName)) {
                intent.putExtra(Intent.EXTRA_TEXT, htmlbody);

            } else {
                intent.putExtra(Intent.EXTRA_TEXT, textbody);
            }
            Log.d(TAG, info.activityInfo.packageName);
            ((Activity) mContext).startActivity(intent);

            mDialog.dismiss();
        }

        public class ShareIntentAdapter extends BaseAdapter {

            public ShareIntentAdapter() {
                super();
            }

            @Override
            public int getCount() {
                return plainTextActivities != null? plainTextActivities.size() : 0;
            }

            @Override
            public ResolveInfo getItem(int position) {
                return plainTextActivities.get(position);
            }

            @Override
            public long getItemId(int position) {
                return position;
            }

            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                View view;
                if (convertView == null) {
                    view = mInflater.inflate(R.layout.griditem_share_us, parent, false);
                } else {
                    view = convertView;
                }
                bindView(view, plainTextActivities.get(position));
                return view;
            }

            private final void bindView(View view, ResolveInfo info) {
                TextView text = (TextView)view.findViewById(android.R.id.text1);
                ImageView icon = (ImageView)view.findViewById(android.R.id.icon);

                text.setText(info.activityInfo.applicationInfo.loadLabel(mContext.getPackageManager()).toString());
                icon.setImageDrawable(info.activityInfo.applicationInfo.loadIcon(mContext.getPackageManager()));
            }
        }
    }

好像有些人想的布局文件了。这里是他们：

dialog_share_us_chooser.xml

<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/resolver_grid"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    android:clipToPadding="false"
    android:columnWidth="128dp"
    android:numColumns="4"
    android:padding="16dp"
    android:scrollbarStyle="outsideOverlay" />

griditem_share_us.xml（从自己的AOSP项目）：

<?xml version="1.0" encoding="utf-8"?>
<!--
/* //device/apps/common/res/any/layout/resolve_list_item.xml
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:gravity="center"
              android:orientation="vertical"
              android:layout_height="wrap_content"
              android:layout_width="match_parent"
              android:padding="16dp">
<!--               android:background="@android:drawable/activity_picker_bg" -->

    <!-- Activity icon when presenting dialog
         Size will be filled in by ResolverActivity -->
    <ImageView android:id="@android:id/icon"
               android:layout_width="wrap_content"
               android:layout_height="wrap_content"
               android:scaleType="fitCenter" />

    <!-- Activity name -->
    <TextView android:id="@android:id/text1"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:gravity="center"
              android:minLines="2"
              android:maxLines="2"
              android:paddingLeft="4dip"
              android:paddingRight="4dip" />
<!--               android:textAppearance="android:attr/textAppearanceSmall" -->
</LinearLayout>

Answer 3:

如果更改上面的线：

sharingIntent.setType("text/plain"); ，请问这个问题得到解决？

我认为这是text/plain ，不是plain/text 。

参考来自Android开发者：