com.perm.DoomPlay.AbstractVkItems.java Source code

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Here is the source code for com.perm.DoomPlay.AbstractVkItems.java

Source

package com.perm.DoomPlay;

/*
 *    Copyright 2013 Vladislav Krot
 *
 *    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.
 *
 *    You can contact me <DoomPlaye@gmail.com>
 */

import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.Toast;
import com.api.KException;
import org.json.JSONException;

import java.io.IOException;
import java.util.ArrayList;

abstract class AbstractVkItems extends AbstractReceiver {
    static boolean isLoading;
    LinearLayout linearLoading;
    ListView listView;
    public final static String keyLinerLoadingRestore = "keyLinerLoading";

    protected abstract void onClickRefresh();

    protected abstract ArrayList<Audio> getAudios(int position) throws KException, JSONException, IOException;

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

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case R.id.itemRefresh:
            if (isLoading)
                AbstractList.waitMessage(getBaseContext());
            if (!MainScreenActivity.isRegister)
                Toast.makeText(getBaseContext(), getResources().getString(R.string.please_sign_in),
                        Toast.LENGTH_SHORT).show();
            else
                onClickRefresh();
            return true;
        case R.id.itemInterrupt:
            cancelLoading();
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    private TaskLoader taskLoader;

    @Override
    public void onBackPressed() {
        super.onBackPressed();
        cancelLoading();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        cancelLoading();
    }

    final AdapterView.OnItemClickListener onClickListener = new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            if (isLoading)
                AbstractList.waitMessage(getBaseContext());
            else if (!MainScreenActivity.isRegister)
                Toast.makeText(getBaseContext(), getResources().getString(R.string.please_sign_in),
                        Toast.LENGTH_SHORT).show();
            else if (!Utils.isOnline(getBaseContext()))
                Toast.makeText(getBaseContext(), getResources().getString(R.string.check_internet),
                        Toast.LENGTH_SHORT).show();
            else {
                taskLoader = new TaskLoader();
                taskLoader.execute(position);
            }
        }

    };

    void cancelLoading() {
        if (isLoading && taskLoader != null) {
            taskLoader.cancel(true);
        }
    }

    void startListVkActivity(ArrayList<Audio> audios) {
        Intent intent = new Intent(this, ListVkActivity.class);
        intent.setAction(ListVkActivity.actionJust);
        intent.putExtra(MainScreenActivity.keyOpenInListTrack, audios);
        startActivity(intent);
    }

    void setLoading() {
        if (isLoading) {
            isLoading = false;
            linearLoading.setVisibility(View.GONE);
        } else {
            linearLoading.setVisibility(View.VISIBLE);
            isLoading = true;
        }
    }

    private class TaskLoader extends AsyncTask<Integer, Void, ArrayList<Audio>> {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            setLoading();
        }

        @Override
        protected ArrayList<Audio> doInBackground(Integer... params) {
            try {
                return getAudios(params[0]);
            } catch (KException e) {
                handleKException(e);
                cancel(false);
            } catch (JSONException e) {
                showException(e);
                cancel(false);
            } catch (IOException e) {
                showException(e);
                cancel(false);
            }
            return null;
        }

        @Override
        protected void onCancelled() {
            super.onCancelled();
            isLoading = false;
            linearLoading.setVisibility(View.GONE);
        }

        @Override
        protected void onPostExecute(ArrayList<Audio> audios) {
            super.onPostExecute(audios);
            setLoading();

            if (audios == null)
                Toast.makeText(getBaseContext(), getResources().getString(R.string.cant_get_audio),
                        Toast.LENGTH_SHORT).show();
            else
                startListVkActivity(audios);
        }
    }
}