image
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<ListView
android:id="@+id/lv"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/tv_name"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:textSize="20sp"
android:text="aaadd"
/>
<TextView
android:id="@+id/tv_phone"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="bbbbb"
android:textSize="20sp"
android:textColor="#E52E28"
/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<litepal>
<dbname value="PersonStore"></dbname>
<version value="1" />
<list>
<mapping class="com.example.administrator.simpleadapter.Person"></mapping>
</list>
<!--<storage value="internal" /><!–上线时注意环境是否修改–>-->
</litepal>
package com.example.administrator.simpleadapter;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import org.litepal.crud.DataSupport;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//1.找到控件
ListView lv = findViewById(R.id.lv);
//2.准备显示的数据
List<Map<String, String>> data = new ArrayList<>();
Map<String, String> map1 = new HashMap<>();
map1.put("name", "张飞");
map1.put("phone", "1388888");
Map<String, String> map2 = new HashMap<>();
map2.put("name", "赵云");
map2.put("phone", "1105544555");
Map<String, String> map3 = new HashMap<>();
map3.put("name", "貂蝉");
map3.put("phone", "138858888");
Map<String, String> map4 = new HashMap<>();
map4.put("name", "关羽");
map4.put("phone", "1588445555");
data.add(map1);
data.add(map2);
data.add(map3);
data.add(map4);
//先新增Peroson
Person person = new Person();
person.setName("吕布");
person.setPhone("5656565454");
person.save();
List<Person> personList = DataSupport.findAll(Person.class);
Map<String, String> map5 = new HashMap<>();
for (Person person1 : personList) {
map5.put("name", person1.getName());
map5.put("phone", person1.getPhone());
}
data.add(map5);
//3.设置数据适配器
//第三个参数 from map集合的key名称 他会一句这个填充value
//第四个参数 to 把数据对应放到哪里去
SimpleAdapter adapter = new SimpleAdapter(
this,
data,
R.layout.item,
new String[]{"name", "phone"},
new int[]{R.id.tv_name, R.id.tv_phone}
);
lv.setAdapter(adapter);
}
}
package com.example.administrator.simpleadapter;
import org.litepal.crud.DataSupport;
public class Person extends DataSupport {
private String name;
private String phone;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
@Override
public String toString() {
return "Person{" +
"name='" + name + '\'' +
", phone='" + phone + '\'' +
'}';
}
}