小编Sav*_*ita的帖子

当我在AndroidManifest中添加Activity时,我收到的错误是没有具体的类.请帮我通过删除活动的抽象类来解决问题,但它无法解决.

public abstract class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
    private GoogleMap mMap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.map_fragment);
        setUpMap();
    }

    @Override
    protected void onResume() {
        super.onResume();
        setUpMap();
    }

    @Override
    public void onMapReady(GoogleMap map) {
        if (mMap != null) {
            return;
        }
        mMap = map;
        startDemo();
    }

    private void setUpMap() {
        ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMapAsync(this);
    }

    /**
     * Run the demo-specific code.
     */
    protected abstract void startDemo();

    protected GoogleMap getMap() {
        return mMap;
    }

}

我已经想从MainActivity启动我的RecipientFragment并将数据从MainActivity传递到Fragment.这是我实现的代码.但片段没有开始.

Bundle bundle = new Bundle();
bundle.putString(ParseConstants.KEY_FILE_TYPE, fileType);
RecipientsFragment keyfile = new RecipientsFragment();
keyfile.setArguments(bundle);
Fragment newFragment = new RecipientsFragment();
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.commit();

我还想知道如何传递intent.setData并在Fragment中获取该数据.目前我有以下代码:

RecipientFragment

mMediaUri = getActivity().getIntent().getData();

主要活动

Intent recipientsIntent = new Intent(this, RecipientsFragment.class);
        recipientsIntent.setData(mMediaUri);