标签:cto view alt name static 图片 har span oid
public class DbOpenHelper extends SQLiteOpenHelper { private static String name = "test.db"; /* 数据库名称 */ private static int version = 1; /* 数据库版本号 */ public DbOpenHelper(Context context) { super(context, name, null, version); // TODO Auto-generated constructor stub } @Override public void onCreate(SQLiteDatabase db) { // TODO Auto-generated method stub String sql = "create table person(id integer primary key autoincrement, name varchar(64))"; db.execSQL(sql); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { // TODO Auto-generated method stub } }
private Button button; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); button = (Button) this.findViewById(R.id.button); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub DbOpenHelper dbOpenHelper = new DbOpenHelper(MainActivity.this); dbOpenHelper.getWritableDatabase(); } }); }
标签:cto view alt name static 图片 har span oid
原文地址:https://www.cnblogs.com/zhangxuechao/p/11869239.html