SQLCipher的导入和基本使用

   SQLCipher是分为社区版和商业版，我这里现在只介绍社区版怎么使用：

   官网，里面可以看到应该导入什么依赖SQLCipher官网

import android.content.Context;import net.sqlcipher.database.SQLiteDatabase;
import net.sqlcipher.database.SQLiteOpenHelper;public class MyDatabaseOpenHelper extends SQLiteOpenHelper {public MyDatabaseOpenHelper(Context context) {super(context, "chenye.db", null, 1);}@Overridepublic void onCreate(SQLiteDatabase db) {db.execSQL("create table if not exists Person(_id Integer PRIMARY KEY AUTOINCREMENT,NAME varchar(32),AGE varchar(32))");}@Overridepublic void onUpgrade(SQLiteDatabase sqLiteDatabase, int i, int i1) {}
}

import android.content.ContentValues;
import android.content.Context;
import android.util.Log;import net.sqlcipher.Cursor;
import net.sqlcipher.database.SQLiteDatabase;import java.util.ArrayList;
import java.util.List;public class DbManager {private static final String TAG = "cy===DbManager";private SQLiteDatabase mDb;private DbManager() {}private static final class Holder {private static final DbManager INSTANCE = new DbManager();}public static DbManager getInstance() {return Holder.INSTANCE;}public DbManager init(Context context) {SQLiteDatabase.loadLibs(context);MyDatabaseOpenHelper helper = new MyDatabaseOpenHelper(context);mDb = helper.getWritableDatabase("YEDASHEN");return this;}public boolean insert(List<Person> persons) {boolean flag = true;ContentValues values = new ContentValues();for (Person person : persons) {values.clear();values.put("name", person.getName());values.put("age", person.getAge());long person1 = mDb.insert("Person", null, values);flag = person1 > 0;}return flag;}public List<Person> query() {List<Person> persons = new ArrayList<>();Cursor cursor = mDb.rawQuery("select * from Person", null);while (cursor.moveToNext()) {Person person = new Person();try {person.setName(cursor.getString(cursor.getColumnIndex("NAME")));person.setAge(cursor.getString(cursor.getColumnIndex("AGE")));persons.add(person);} catch (Exception e) {Log.i(TAG, e.toString());}}cursor.close();return persons;}
}

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.Toast;import java.util.ArrayList;
import java.util.List;public class MainActivity extends AppCompatActivity {private static final String TAG = "cy===MainActivity";private DbManager mDbManager;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mDbManager = DbManager.getInstance().init(this);insertData();query();}private void insertData() {List<Person> persons = new ArrayList<>();persons.add(new Person("CY", "25"));persons.add(new Person("YL", "24"));persons.add(new Person("HY", "24"));if (mDbManager.insert(persons)) {Toast.makeText(this, "插入数据成功", Toast.LENGTH_SHORT).show();} else {Toast.makeText(this, "插入数据失败", Toast.LENGTH_SHORT).show();}}public void query() {List<Person> persons = mDbManager.query();Log.i(TAG, persons.toString());}
}