LinearLayout列表展示

步骤:
1.在layout中写一个LinearLayout布局，并且有id

                2.MainActivity中获取数据库的所有数据

3.把数据中中的数据,通过TextVew添加到LinearLayout对象

<span style="font-size:14px;"><ScrollView 
    android:layout_width="match_parent"
    android:layout_height="match_parent" xmlns:android="http://schemas.android.com/apk/res/android">

<LinearLayout  
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" 
    android:id="@+id/ll_list">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

</LinearLayout>
</ScrollView></span>

<span style="font-size:14px;">package com.sqf.sql;

import java.util.List;

import com.sqf.sql.dao.PersonDao;
import com.sqf.sql.entities.Person;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.LinearLayout;
import android.widget.TextView;

public class MainActivity extends Activity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    LinearLayout llList = (LinearLayout) findViewById(R.id.ll_list);
    
    PersonDao dao = new PersonDao(this);  
    List<Person> personList = dao.queryAll(); //获取表中的所有数据
    
    if(personList != null){
      TextView tv;
      for(Person person:personList){
        //向线性布局中添加一个textView
        tv = new TextView(this);
        tv.setText(person.toString());
        tv.setTextSize(18);
        llList.addView(tv);
      }
    }
    
  }

 
}
</span>

<span style="font-size:14px;">package com.sqf.sql.entities;

public class Person {
  
  private int id;
  private String name;
  private int age;
  public int getId() {
    return id;
  }
  public void setId(int id) {
    this.id = id;
  }
  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public int getAge() {
    return age;
  }
  public void setAge(int age) {
    this.age = age;
  }
  @Override
  public String toString() {
    return "Person [id=" + id + ", name=" + name + ", age=" + age + "]";
  }
  public Person(int id, String name, int age) {
    super();
    this.id = id;
    this.name = name;
    this.age = age;
  }
  public Person() {
    super();
  }
  
  
  
  
}
</span>

数据库操作请参考我的其他文章