Android Open Source - Joetz-Android-V2 Fragment List Activities

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.example.jens.myapplication.activities;
//from  ww w . j  a  v  a 2  s. c  o  m
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;

import com.example.jens.myapplication.R;
import com.example.jens.myapplication.apimanager.ApiConnection;
import com.example.jens.myapplication.apimanager.SimpleRequestTask;
import com.example.jens.myapplication.apimanager.manager.ActivityManager;
import com.example.jens.myapplication.camps.RecyclerItemClickListener;
import com.example.jens.myapplication.domain.User;
import com.example.jens.myapplication.sam.JoetzApplication;
import com.example.jens.myapplication.sam.MyFragment;
import com.example.jens.myapplication.util.ActivityUtils;

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;

public class FragmentListActivities extends MyFragment {
    private OnFragmentInteractionListener mListener;

    private SimpleRequestTask mRetrieveTaskListener;

    private ActivityManager mActivityManager;
    private RecyclerView mLstActivities;

    private ProgressBar mPgbLoading;

    private LinkedList<View> mRootViews = new LinkedList<>();
    private TextView mTxtNoActivities;
    private LinearLayout mLlyError;
    private TextView mTxtInfo;
    private Button mBtnTryAgain;

    private List<JoetzActivity> activities;

    public static FragmentListActivities newInstance() {
        FragmentListActivities fragment = new FragmentListActivities();
        return fragment;
    }
    public FragmentListActivities() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mActivityManager = JoetzApplication.getContext().getActivityManager();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View rootView = inflater.inflate(R.layout.fragment_list_activities, container, false);

        mPgbLoading = (ProgressBar) rootView.findViewById(R.id.pgbLoading);

        mTxtNoActivities = (TextView) rootView.findViewById(R.id.txtNoActivities);
        mLlyError = (LinearLayout) rootView.findViewById(R.id.llyError);
        mTxtInfo = (TextView) rootView.findViewById(R.id.txtInfo);
        mBtnTryAgain = (Button) rootView.findViewById(R.id.btnTryAgain);

        mBtnTryAgain.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                loadActivities();
            }
        });

        GridLayoutManager gridLayoutManager = new GridLayoutManager(getActivity(),
                ActivityUtils.getSpanCount(getActivity()));
        mLstActivities = (RecyclerView) rootView.findViewById(R.id.lstActivities);
        mLstActivities.setLayoutManager(gridLayoutManager);
        mLstActivities.addOnItemTouchListener(new RecyclerItemClickListener(getActivity(),
                new RecyclerItemClickListener.OnItemClickListener() {
                    @Override
                    public void onItemClick(View view, int position) {
                        openActivity(activities.get(position).getId());
                    }
                }));

        mRootViews.add(mLstActivities);
        mRootViews.add(mPgbLoading);
        mRootViews.add(mLlyError);
        mRootViews.add(mTxtNoActivities);

        loadActivities();

        return rootView;
    }

    /**
     * Open the detailpage for an activity
     * @param activityId activity ID
     */
    private void openActivity(long activityId){
        Intent i = new Intent(getActivity(), ActivityDetailActivity.class);
        i.putExtra(ActivityDetailActivity.ARG_ACTIVITY_ID, activityId);
        startActivity(i);
    }

    /**
     * Load the activities
     */
    private void loadActivities(){
        setVisibleRootView(mPgbLoading);

        if(mActivityManager.getActivities() == null){
            //If the activities are not loaded, load them
            mRetrieveTaskListener = new SimpleRequestTask() {
                @Override
                public void doTask(int statusCode) {
                    mRetrieveTaskListener = null;
                    if(ApiConnection.isSuccessCode(statusCode)){
                        loadActivities();
                    }else{
                        String errorMessage;
                        if(ApiConnection.isConnectionFailedCode(statusCode)){
                            errorMessage = getString(R.string.error_connection_failed);
                        }else{
                            errorMessage = getString(R.string.error_unknown);
                        }
                        mTxtInfo.setText(errorMessage);
                        setVisibleRootView(mLlyError);
                    }
                }
            };

            //mRetrieveTask = mActivityManager.retrieveActivities();
            mActivityManager.retrieveActivities(mRetrieveTaskListener);
            return;
        }

        List<JoetzActivity> allActivities = mActivityManager.getActivities();

        //Filter
        User u = JoetzApplication.getContext().getLoginManager().getUser();
        List<Long> invitedActivities = u.getInvitedActivities();
        List<Long> acceptedActivities = u.getAcceptedActivities();
        List<Long> declinedActivities = u.getDeclinedActivities();
        activities = new ArrayList<>();
        for(JoetzActivity ja : allActivities){
            if(invitedActivities.contains(ja.getId())
                    || acceptedActivities.contains(ja.getId())
                    || declinedActivities.contains(ja.getId())){
                activities.add(ja);
            }
        }

        if(activities.size() == 0){
            setVisibleRootView(mTxtNoActivities);
            return;
        }

        mLstActivities.setAdapter(new JoetzActivitiesAdapter(activities));
        setVisibleRootView(mLstActivities);
    }

    private void setVisibleRootView(View view){
        for(View v : mRootViews){
            v.setVisibility(View.GONE);
        }
        view.setVisibility(View.VISIBLE);
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            mListener = (OnFragmentInteractionListener) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString()
                    + " must implement OnFragmentInteractionListener");
        }
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        if(mRetrieveTaskListener != null){
            mActivityManager.unsubscribeListActivities(mRetrieveTaskListener);
            mRetrieveTaskListener = null;
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mListener = null;
    }

    public interface OnFragmentInteractionListener {

    }

}

Java Source Code List

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