在寻呼机适配器中安装Android开放片段

Question

这个ImagePager Adapter类是来自Fragment而不是Activity。我把Activity放到了getFragmentManager();

public class ImagePagerAdapter extends PagerAdapter{
    Context context;
    LayoutInflater _inflater = null;
    ImageLoader imageLoaderProfile;
    Activity activity;
    private LayoutInflater inflater;
    private List<Profile> movieItems;
    Button gpsBtn;
    Bundle bundle = new Bundle();

    public ImagePagerAdapter(Context context, List<Profile> movieItems) {
        super();
        this.context = context;
        _inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        this.movieItems = movieItems;
        imageLoaderProfile = new ImageLoader(activity);
    }

    @Override
    public Object instantiateItem(final ViewGroup container, int position) {
        final LinearLayout layout = (LinearLayout) _inflater.inflate(R.layout.list_profile, null);

        final Profile m = movieItems.get(position);
        TextView nameView = (TextView) layout.findViewById(R.id.profileTitle);
        ImageView cardView = (ImageView) layout.findViewById(R.id.profileCard);
        nameView.setText(m.getTitle());

        ImageView profileCard = (ImageView) layout.findViewById(R.id.profileCard);
        Log.d("Card Name: ", String.valueOf(m.getTitle()));
        imageLoaderProfile.DisplayImage(m.getThumbnailUrl(), profileCard);

        cardView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.d("Card Name: ", m.getTitle());

                bundle.putString("nombre", m.getTitle());

                InfoProfile frag = new InfoProfile();
                //frag.setArguments(bundle);

                FragmentManager manager = activity.getFragmentManager();
                FragmentTransaction transaction = manager.beginTransaction();
                transaction.add(R.id.myLayout, frag, "VivzFragment");
                transaction.addToBackStack(null);
                // manager.popBackStack();
                transaction.commit();
            }
        });

        container.addView(layout);
        return layout;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        ((ViewPager) container).removeView((View) object);
    }

    @Override
    public int getCount() {
        return movieItems.size();
    }

    @Override
    public boolean isViewFromObject(View view, Object obj) {
        return view.equals(obj);
    }
}

我正在尝试在“PageAdpater”中打开一个片段：

FragmentManager manager = activity.getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.add(R.id.myLayout, frag, "VivzFragment");
transaction.addToBackStack(null);
// manager.popBackStack();
transaction.commit();

结果出现此错误：

at icomm.cardboard.adapters.ImagePagerAdapter$1.onClick(ImagePagerAdapter.java:74)
        at android.view.View.performClick(View.java:4240)
            at android.view.View$PerformClick.run(View.java:17721)
            at android.os.Handler.handleCallback(Handler.java:730)
            at android.os.Handler.dispatchMessage(Handler.java:92)
            at android.os.Looper.loop(Looper.java:137)
            at android.app.ActivityThread.main(ActivityThread.java:5103)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:525)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
            at dalvik.system.NativeStart.main(Native Method)

Answer 1

您可以在pagerAdapter的构造函数中传递fragmentManager。

  FragnmentManager manager;
  public ImagePagerAdapter(Context context, List<Profile> movieItems,FragnmentManager manager) {
    super();
    this.manager=manager
    this.context = context;
    _inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    this.movieItems = movieItems;
    imageLoaderProfile = new ImageLoader(activity);
}

然后像这样调用片段......

 FragmentTransaction transaction = manager.beginTransaction();
 transaction.add(R.id.myLayout, frag, "VivzFragment");
 transaction.addToBackStack(null);
 // manager.popBackStack();
 transaction.commit();