Android Open Source - AndroidPINProtectionExample Main Fragment Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.example.pinexample.ui;
//from  w  w w  .  ja v  a  2 s. c o m
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.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;

import com.example.pinexample.R;
import com.example.pinexample.fragments.CreatePinFragment;
import com.example.pinexample.fragments.TermsFragment;
import com.example.pinexample.fragments.WelcomeFragment;
import com.viewpagerindicator.LinePageIndicator;
import com.viewpagerindicator.PageIndicator;

/**
 * The first run Activity that initializes the welcome fragments. 
 * Implements the ViewPagerIndicator library.
 * @author drakuwa
 *
 */
public class MainFragmentActivity extends FragmentActivity {
  
  private PageIndicator mIndicator;
  private ViewPager pager;
  private static final int[] TAB_TITLES = new int[] {
    R.string.empty, R.string.empty, R.string.empty, R.string.empty };
  private SharedPreferences prefs;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    // check if the app is ran for the first time
    prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
    if (prefs.getBoolean("initialized", false)) {
      // this is not a first time the application is started
      // check if there is a pin set
      if (prefs.getString("pin", "").trim().length()>0){
        Intent pin = new Intent(MainFragmentActivity.this, PinActivity.class);
        pin.putExtra("whereTo", "main");
        startActivity(pin);finish();}
      else {
        // if there is no pin set, just start the main activity
        startActivity(new Intent(MainFragmentActivity.this, StartActivity.class));
        finish();}
    }
    // else, set the content view and show the welcome fragments...
    setContentView( R.layout.firstrun_fragment );
    
    // set up a FragmentTitleAdapter from the support library
    FragmentPagerAdapter adapter = new FragmentTitleAdapter(getSupportFragmentManager());
    // initialize the ViewPager with the FragmentTitleAdapter adapter
    pager = (ViewPager) findViewById(R.id.viewpager);
    pager.setAdapter(adapter);
    
    mIndicator = (LinePageIndicator)findViewById(R.id.indicator);
        mIndicator.setViewPager(pager);
  }
  
  @Override
    public void onBackPressed() {
        if (pager.getCurrentItem() == 0) {
            // If the user is currently looking at the first step, allow the system to handle the
            // Back button. This calls finish() on this activity and pops the back stack.
            super.onBackPressed();
        } else {
            // Otherwise, select the previous step.
          pager.setCurrentItem(pager.getCurrentItem() - 1);
        }
    }
  
  /**
   * Titles provider class
   */
  class FragmentTitleAdapter extends FragmentPagerAdapter {
    public FragmentTitleAdapter(FragmentManager fm) {super(fm);}
    @Override
    public Fragment getItem(int position) {
      if(position==0) return WelcomeFragment.newInstance(TAB_TITLES[position % TAB_TITLES.length]);
      else if(position==3) return CreatePinFragment.newInstance(TAB_TITLES[position % TAB_TITLES.length]);
      return TermsFragment.newInstance(TAB_TITLES[position % TAB_TITLES.length]);
    }
    @Override
    public CharSequence getPageTitle(int position) {
      return getString(TAB_TITLES[position % TAB_TITLES.length]);}
    @Override public int getCount() {  return TAB_TITLES.length;}
  }
}

Java Source Code List

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