Android Open Source - Tree-Task Main

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License

The source code is released under:

Apache License

Java Source Code

package com.ghsoft.treetaskapp;
/*from ww  w . java  2  s .c o m*/
import java.io.FileNotFoundException;
import java.util.Locale;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.PagerTabStrip;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;

import com.ghsoft.treetask.R;
import com.ghsoft.treetask.TaskManager;

public class Main extends ActionBarActivity {

  private SectionsPagerAdapter mSectionsPagerAdapter;
  private ViewPager mViewPager;
  private int page;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    page = 0;

    if (getIntent().getExtras() != null && getIntent().getExtras().containsKey("page")) {
      page = getIntent().getExtras().getInt("page");
    }

    PagerTabStrip pts = (PagerTabStrip) findViewById(R.id.pager_title_strip);
    pts.setDrawFullUnderline(true);

    SharedPreferences general = PreferenceManager.getDefaultSharedPreferences(this);
    int color = general.getInt("accent_color", getResources().getColor(R.color.accentColor));
    pts.setTextColor(color);
    pts.setTabIndicatorColor(color);
    

    // Create the adapter that will return a fragment for each of the three
    // primary sections of the app.
    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager(), this);
    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.pager);

    mViewPager.setAdapter(mSectionsPagerAdapter); // issue

    mViewPager.setCurrentItem(page);

    mViewPager.setOnPageChangeListener(new OnPageChangeListener() {

      public void onPageScrollStateChanged(int state) {
      }

      public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
      }

      public void onPageSelected(int position) {
        page = position;
      }
    });

  }

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

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {

    case R.id.newTask:
      Intent i = new Intent(Main.this, NewTreeTask.class);
      finish();
      startActivity(i);
      overridePendingTransition(R.anim.slide_up, R.anim.short_zoom);

      break;

    case R.id.settings:
      Intent s = new Intent(Main.this, Settings.class);
      finish();
      startActivity(s);
      overridePendingTransition(R.anim.slide_up, R.anim.short_zoom);

      break;

    default:
      break;
    }

    return true;
  }

  /**
   * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
   * one of the sections/tabs/pages.
   */
  public class SectionsPagerAdapter extends FragmentPagerAdapter {

    private Context c;

    public SectionsPagerAdapter(FragmentManager fm, Context c) {
      super(fm);
      this.c = c;
    }

    @Override
    public Fragment getItem(int position) {
      // getItem is called to instantiate the fragment for the given page.
      // Return a DummySectionFragment (defined as a static inner class
      // below) with the page number as its lone argument.
      TaskManager tm = new TaskManager();

      try {
        tm.load();
      } catch (FileNotFoundException e) {
        AlertDialog.Builder builder = new AlertDialog.Builder(c);
        builder.setMessage("Cannot read tasks from SD card. Do you have an SD card inserted?").setCancelable(false).setPositiveButton("OK", new DialogInterface.OnClickListener() {
          public void onClick(DialogInterface dialog, int id) {
            finish();
          }
        });
        AlertDialog alert = builder.create();
        alert.show();
      }

      Fragment fragment = new MainViewFragment();
      Bundle args = new Bundle();

      args.putSerializable("tm", tm);

      args.putInt(MainViewFragment.ARG_SECTION_NUMBER, position + 1);
      fragment.setArguments(args);
      return fragment;
    }

    @Override
    public int getCount() {
      // Show 2 total pages.
      return 2;
    }

    @Override
    public CharSequence getPageTitle(int position) {
      Locale l = Locale.getDefault();
      switch (position) {
      case 0:
        return getString(R.string.title_section1).toUpperCase(l);
      case 1:
        return getString(R.string.title_section2).toUpperCase(l);
      }
      return null;
    }
  }

  @Override
  public void onBackPressed() {
    if (mViewPager.getCurrentItem() == 1) {
      mViewPager.setCurrentItem(0, true);
    } else {
      finish();
    }
  }

}

Java Source Code List

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