Android初学第19天

09_LayoutsAndWidgets

代码

CrimeLab.java

package com.bignerdranch.android.criminalintent;import android.content.Context;import java.util.ArrayList;import java.util.List;import java.util.UUID;public class CrimeLab {    private static CrimeLab sCrimeLab;    private List
    
      mCrimes;    public static CrimeLab get(Context context) {        if (sCrimeLab == null) {            sCrimeLab = new CrimeLab(context);        }        return sCrimeLab;    }    private CrimeLab(Context context) {        mCrimes = new ArrayList<>();        for (int i = 0; i < 100; i++) {            Crime crime = new Crime();            crime.setTitle("Crime #" + i);            crime.setSolved(i % 2 == 0);            mCrimes.add(crime);        }    }    public List
     
       getCrimes() {        return mCrimes;    }    public Crime getCrime(UUID id) {        for (Crime crime : mCrimes) {            if (crime.getId().equals(id)) {                return crime;            }        }        return null;    }}