ANGROM 是一个简单的android 数据库 dsl, 解决了数据库版本控制问题, 提供了select查询类.
使用入门
下载并导入jar包
创建MyApplication类
public class MyApplication extends Application {
@Override public void onCreate() { super.onCreate();
}}
修改 AndroidManifest.xml
<?xml version=”1.0” encoding=”utf-8”?>xmlns:android="http://schemas.android.com/apk/res/android" package="xx.xx.xx" android:versionCode="1" android:versionName="1.0" >
application android:name=".MyApplication" android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme"
创建数据库
@Override public void onCreate() { super.onCreate(); MigrationManager migrationManager = new MigrationManager(); Migration user = new CreateTable(“users”) .addAutoIncrementPrimaryKey(“id”) .addColumn(Genre.STRING, “name”); migrationManager.addMigration(1, user); // 添加数据库1的迁移, 可以添加很多个 SQLHelper sqlHelper = new SQLHelper(getContext(), migrationManager, “test.db”, 1); sqlHelper.getWritableDatabase(); }}
5.修改版本
public class MyApplication extends Application { @Override public void onCreate() { super.onCreate(); MigrationManager migrationManager = new MigrationManager(); Migration user = new CreateTable("users") .addAutoIncrementPrimaryKey("id") .addColumn(Genre.STRING, "name"); migrationManager.addMigration(1, user); // 添加数据库1的迁移, 可以添加很多个 Migration person = new CreateTable("person") .addAutoIncrementPrimaryKey("id") .addColumn(Genre.STRING, "age"); migrationManager.addMigration(2, person); Migration test1 = new CreateTable("test1") .addAutoIncrementPrimaryKey("id") .addColumn(Genre.INTEGER, "age"); migrationManager.addMigration(3, test1); Migration test2 = new CreateTable("test2") .addAutoIncrementPrimaryKey("id") .addColumn(Genre.INTEGER, "age"); migrationManager.addMigration(4, test2); SQLHelper sqlHelper = new SQLHelper(getContext(), migrationManager, "test.db", 4); sqlHelper.getWritableDatabase(); }}
使用查询
Cursor cursor = new Select(“id, name”) .from(“users”) .where(String.format(“id=%s”, id_.toString())) .query(sqlHelper.getReadableDatabase());if (cursor.moveToNext()) { Assert.assertEquals(cursor.getString(1), “ngdkSelect”);} else { Assert.fail(“测试失败”);}Cursor cursor = new Select(“id, name”) .from(“users”) .where(“id=?”) .query(sqlHelper.getReadableDatabase(), new String[] {id.toString()});if (cursor.moveToNext()) { Assert.assertEquals(cursor.getString(1), “ngdkSelect”);} else { Assert.fail(“测试失败”);}