Android Open Source - Android-MultiStateListView Main Activity

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Back to project page Android-MultiStateListView.

License

The source code is released under:

MIT License

Java Source Code

package com.jensdriller.libs.multistatelistview.sample;
//from  www  . j a v  a 2 s . c  om
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;

import com.jensdriller.libs.multistatelistview.MultiStateListView;

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

public class MainActivity extends Activity implements View.OnClickListener {

    private Button mBtnLoad0;
    private Button mBtnLoad10;
    private Button mBtnError;

    private MultiStateListView mMultiStateListView;
    private ArrayAdapter<String> mListAdapter;

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

        setContentView(R.layout.activity_main);

        mBtnLoad0 = (Button) findViewById(R.id.btnLoad0);
        mBtnLoad10 = (Button) findViewById(R.id.btnLoad10);
        mBtnError = (Button) findViewById(R.id.btnError);

        mBtnLoad0.setOnClickListener(this);
        mBtnLoad10.setOnClickListener(this);
        mBtnError.setOnClickListener(this);

        mListAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, new ArrayList<String>());
        mMultiStateListView = (MultiStateListView) findViewById(R.id.list);
        mMultiStateListView.setAdapter(mListAdapter);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btnLoad0:
                new LoadListDataTask().execute(0);
                break;

            case R.id.btnLoad10:
                new LoadListDataTask().execute(10);
                break;

            case R.id.btnError:
                new LoadListDataTask().execute(-1);
                break;
        }
    }

    private void setButtonsEnabled(boolean enabled) {
        mBtnLoad0.setEnabled(enabled);
        mBtnLoad10.setEnabled(enabled);
        mBtnError.setEnabled(enabled);
    }

    private class LoadListDataTask extends AsyncTask<Integer, Void, List<String>> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();

            mListAdapter.clear();
            mListAdapter.notifyDataSetChanged();
            mMultiStateListView.showLoadingView();

            setButtonsEnabled(false);
        }

        @Override
        protected List<String> doInBackground(Integer... params) {

            try { // simulate loading task...
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

            int count = params[0];
            if (count == -1) {
                return null;
            }

            List<String> dummyData = new ArrayList<String>();
            for (int i = 1; i <= count; i++) {
                dummyData.add("#" + i);
            }

            return dummyData;
        }

        @Override
        protected void onPostExecute(List<String> result) {
            super.onPostExecute(result);

            if (result == null) {
                mMultiStateListView.showErrorView();
            } else if (result.isEmpty()) {
                mMultiStateListView.showEmptyView();
            } else {
                mListAdapter.addAll(result);
                mListAdapter.notifyDataSetChanged();
            }

            setButtonsEnabled(true);
        }

    }

}

Java Source Code List

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