基本信息
源码名称:sqlite增删改查实例(android)
源码大小:1.30M
文件格式:.zip
开发语言:SQL
更新时间:2020-07-07
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源码介绍
入门示例,只有一个页面
入门示例,只有一个页面
package com.example.sqlitetest; import com.example.sqlitetest.R; import android.os.Bundle; import android.os.CancellationSignal; import android.provider.Contacts.Intents.Insert; import android.provider.ContactsContract.CommonDataKinds.Phone; import android.R.layout; import android.app.Activity; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; import android.view.Menu; import android.view.View; public class MainActivity extends Activity { private DBDao dao; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); dao = new DBDao(MainActivity.this,"test.db",1); // 打开或创建test.db数据库 // SQLiteDatabase db = this.openOrCreateDatabase("test.db", Context.MODE_PRIVATE, null); // dbHelper = new MyDBHelper(MainActivity.this, "test.db", // null, 1); // SQLiteDatabase db2 = dbHelper.getWritableDatabase(); // db.insert(table, nullColumnHack, values); // db.delete(table, whereClause, whereArgs); // db.update(table, values, whereClause, whereArgs); // db.query(distinct, table, columns, selection, selectionArgs, groupBy, // having, orderBy, limit, cancellationSignal); } //添加按钮事件 public void add(View view) { Person p = new Person(); p.setName("小米"); p.setPhone("15932264578"); dao.save(p ); } public void query(View view) { String id = "1"; Person person = dao.find(id); if(person != null) { System.out.println("查询结果:" person.toString()); }else { System.out.println("查询无结果"); } } public void update(View view) { Person P= new Person(); P.setName("小明"); P.setPhone("110"); P.setId("1"); dao.update(P); } public void delete(View view) { String id ="1"; dao.delete(id); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }