android - 当我们从 Fragment 类调用 facebook 或 twitter 时如何处理后退按钮？

Question

我想从 fragment 连接 Facebook 和 Twitter，但是当我从 Facebook 或 Twitter 返回时应用程序关闭。我想留在那个应用程序中。

我的代码在这里...

 @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_rssitem_detail,container, false);
     Button facebook=(Button)view .findViewById(R.id.facebook);
            facebook.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub

        Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);
        shareIntent.setType("text/plain");
        shareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Some text");
                 shareIntent.putExtra(android.content.Intent.EXTRA_TEXT,"http://www.gogole.com");

        final PackageManager pm = v.getContext().getPackageManager();
        final List<ResolveInfo> activityList = pm.queryIntentActivities(shareIntent, 0);
        for (final ResolveInfo app : activityList) {
        if ("com.facebook.katana.ShareLinkActivity".equals(app.activityInfo.name)) {
        final ActivityInfo activity = app.activityInfo;
        final ComponentName name = new ComponentName(activity.applicationInfo.packageName, activity.name);
        shareIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
        shareIntent.setComponent(name);
        startActivity(shareIntent);
        break;
        }}
        }
        });

    Button twitter=(Button)view.findViewById(R.id.twitter);
        twitter.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
        Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);
        shareIntent.setType("text/plain");
        shareIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Some text");
        shareIntent.putExtra(android.content.Intent.EXTRA_TEXT, "www.google.com");
        final PackageManager pm = v.getContext().getPackageManager();
        final List<ResolveInfo> activityList = pm.queryIntentActivities(shareIntent, 0);
            for (final ResolveInfo app : activityList) {
              if ("com.twitter.android.PostActivity".equals(app.activityInfo.name)) {
                    final ActivityInfo activity = app.activityInfo;
                    final ComponentName name = new ComponentName(activity.applicationInfo.packageName, activity.name);
                    shareIntent.addCategory(Intent.CATEGORY_LAUNCHER);
                    shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
                    shareIntent.setComponent(name);
                    startActivity(shareIntent);
                    break;
                  }
                }
            }
        });

return view;
}
} 

Answer 1

我的问题在这里得到解决是我在 list 文件中的实际代码

<activity
           android:name="com.example.AdslistScreen"
           android:label="@string/app_name" 
           android:noHistory="true"
           android:screenOrientation="portrait"></activity>

因为这行 android:noHistory="true" 当我调用 facebook 时，我以前的历史记录将被清除，所以当我返回我的应用程序时，它将关闭整个应用程序。现在我删除这个android:noHistory="true" 行我的代码工作正常。

谢谢大家