Android Open Source - Randm Main Activity

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Back to project page Randm.

License

The source code is released under:

Apache License

Java Source Code

package com.malvin.randm;
/*from w ww  .  j  a va 2s . c o m*/
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.animation.AccelerateDecelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import butterknife.ButterKnife;
import butterknife.InjectView;
import com.melnykov.fab.FloatingActionButton;
import java.util.Locale;
import java.util.Random;
import timber.log.Timber;

public class MainActivity extends ActionBarActivity
{
    @InjectView(R.id.default_toolbar) Toolbar toolbar;
    @InjectView(R.id.generated_text) TextView generatedText;
    @InjectView(R.id.history_list) ListView historyList;
    @InjectView(R.id.fab) FloatingActionButton button;

    ArrayAdapter<String> arrayAdapter;

    private MenuItem mMenuClearAll;
    private boolean isUnique;
    private boolean useSeparator;
    private Random rand = new Random(System.currentTimeMillis());
    private int mAnimDuration = 900;

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.inject(this);
        initViews();
    }

    @Override protected void onResume()
    {
        super.onResume();
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        isUnique = prefs.getBoolean(getString(R.string.pref_is_unique), false);
        useSeparator = prefs.getBoolean(getString(R.string.pref_use_separator), false);
    }

    private void initViews()
    {
        setSupportActionBar(toolbar);
        View header = getLayoutInflater().inflate(R.layout.header_padding, historyList, false);
        historyList.addHeaderView(header);
        arrayAdapter = new ArrayAdapter<>(this, R.layout.simple_item);
        historyList.setAdapter(arrayAdapter);

        historyList.setOnItemClickListener(new AdapterView.OnItemClickListener()
        {
            @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id)
            {
                Timber.d("clicked " + String.valueOf(position));
            }
        });

        button.setOnClickListener(new View.OnClickListener()
        {

            @Override public void onClick(View v)
            {
                String randVal = getRandomString();

                if (isUnique)
                {
                    while (arrayAdapter.getPosition(randVal) != -1)
                    {
                        randVal = getRandomString();
                    }
                }

                animateTo(randVal);
            }
        });

        button.attachToListView(historyList);
    }

    private void animateTo(final String value)
    {
        int[] vals = new int[5];
        for (int i = 0; i < 5; i++)
        {
            vals[i] = getRandomNumber(0, 10000);
        }

        ValueAnimator a = ValueAnimator.ofInt(vals);
        a.setDuration(mAnimDuration); //TODO add in settings
        a.setInterpolator(new DecelerateInterpolator());
        a.addUpdateListener(new ValueAnimator.AnimatorUpdateListener()
        {
            @Override public void onAnimationUpdate(ValueAnimator animation)
            {
                Integer value = (Integer) animation.getAnimatedValue();
                generatedText.setText(numToString(value));
            }
        });
        a.addListener(new AnimatorListenerAdapter()
        {
            @Override public void onAnimationEnd(Animator animation)
            {
                super.onAnimationEnd(animation);
                generatedText.setText(value);
                arrayAdapter.add(value);
                updateClearButtonVisibility(true);
            }
        });

        ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(button, View.ROTATION, 0f, -1440f);
        objectAnimator.setDuration(mAnimDuration);
        objectAnimator.setInterpolator(new AccelerateDecelerateInterpolator());

        AnimatorSet animatorSet = new AnimatorSet();
        animatorSet.playTogether(a, objectAnimator);
        animatorSet.start();
    }

    private String getRandomString()
    {
        int generated = getRandomNumber(0, 10000);
        return numToString(generated);
    }

    private String numToString(int num)
    {
        String val;
        if (useSeparator)
        {
            val = String.format(Locale.getDefault(), "%,d", num);
        }
        else
        {
            val = String.valueOf(num);
        }
        return val;
    }

    private int getRandomNumber(int lowest, int highest)
    {
        // nextInt is normally exclusive of the top value,
        // so add 1 to make it inclusive
        return rand.nextInt((highest - lowest) + 1) + lowest;
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        mMenuClearAll = menu.findItem(R.id.action_clear);
        return true;
    }

    private void updateClearButtonVisibility(boolean visible)
    {
        mMenuClearAll.setVisible(visible);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        switch (id)
        {
            case R.id.action_settings:
                Intent i = new Intent(this, SettingsActivity.class);
                startActivity(i);
                return true;
            case R.id.action_clear:
                arrayAdapter.clear();
                updateClearButtonVisibility(false);
                return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

Java Source Code List

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