每日编程训练20150910：ViewPager

package com.bignerdranch.android.criminalintent;

import java.util.ArrayList;

import android.app.FragmentManager;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;

public class CrimePagerActivity extends FragmentActivity {
private ViewPager mViewPager;
private ArrayList<Crime> mCrimes;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mViewPager = new ViewPager(this);
mViewPager.setId(R.id.viewPager);
setContentView(mViewPager);

mCrimes = CrimeLab.get(this).getCrimes();

android.support.v4.app.FragmentManager fm = getSupportFragmentManager();
mViewPager.setAdapter(new FragmentStatePagerAdapter(fm) {
@Override
public int getCount() {
return mCrimes.size();
}

@Override
public Fragment getItem(int pos) {
Crime crime = mCrimes.get(pos);
return CrimeFragment.newInstance(crime.getId());
}
});
}
}