基本信息
源码名称:android 数据库orm 添加、删除操作 实例源码
源码大小:1.04M
文件格式:.rar
开发语言:Java
更新时间:2016-04-01
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源码介绍
package com.wh.activeandroiddemo2.activity;
import java.util.ArrayList;
import java.util.List;
import com.activeandroid.query.Select;
import com.wh.activeandroiddemo2.R;
import com.wh.activeandroiddemo2.adapter.StuAdapter;
import com.wh.activeandroiddemo2.entry.Student;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.app.Activity;
public class MainActivity extends Activity {
private Button add_btn;
private ListView lv;
List<Student> sList = new ArrayList<Student>();
private StuAdapter stuAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
/**
* 初始化视图
*/
private void initView() {
add_btn = (Button) findViewById(R.id.add_btn);
lv = (ListView) findViewById(R.id.lv);
stuAdapter = new StuAdapter(this, sList);
lv.setAdapter(stuAdapter);
List<Student> stuList = new Select().from(Student.class).execute();
for (int i = 0; i < stuList.size(); i ) {
Student stu = stuList.get(i);
stu.name = "zhangsan";
stu.save();
}
sList.addAll(stuList);
for (int i = 0; i < 4; i ) {
Student student2 = new Student();
student2.name = "lisi" i;
student2.age = 10 i;
student2.save();
sList.add(student2);
}
stuAdapter.notifyDataSetChanged();
add_btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Student student3 = new Student();
student3.name = "wangwu";
student3.age = 25;
student3.save();
sList.add(student3);
stuAdapter.notifyDataSetChanged();
}
});
}
}