安卓：将数据库中的数据查询出来用adapter（SimpleAdapter,SimpleCursorAdapter,自定义适配器CursorAdapter）绑定到listview上

SimpleAdapter,SimpleCursorAdapter,自定义适配器CursorAdapter绑定数据库中的数据到控件并显示

注意：在配置文件中加入权限：

将数据库放到外部存储storage/Download文件下

结果如图：

第一种：SimpleAdapter

逻辑代码文件：

package com.example.day14_sqlitedb;

import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.os.Environment;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class MainActivity extends Activity {

	ListView lv;
	List> list;
	SQLiteDatabase db;
	 String path = Environment.getExternalStorageDirectory().
	 getAbsolutePath()+File.separator+"Download"+File.separator+"test.db";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		lv = (ListView) findViewById(R.id.lv);
		db = SQLiteDatabase.openDatabase(path, null,
				SQLiteDatabase.OPEN_READWRITE);
		SimpleAdapter adapter = new SimpleAdapter(getApplicationContext(),
				getData(), R.layout.style, new String[] { "name", "sex", "age",
						"love" }, new int[] { R.id.name, R.id.sex, R.id.age,
						R.id.love });
		lv.setAdapter(adapter);

	}

	public List> getData() {
		list = new ArrayList>();
		String sql = "select * from person";
		Cursor cursor = db.rawQuery(sql, null);
		while (cursor.moveToNext()) {
			Map map = new HashMap();
			String name = cursor.getString(cursor.getColumnIndex("name"));
			String sex = cursor.getString(cursor.getColumnIndex("sex"));
			int age = cursor.getInt(cursor.getColumnIndex("age"));
			String love = cursor.getString(cursor.getColumnIndex("love"));
			map.put("name", name);
			map.put("sex", sex);
			map.put("age", age);
			map.put("love", love);
			list.add(map);
		}
		return list;
	}

}

第二种SimpleCursorAdapter：

逻辑代码文件：

package com.SimpleCursorAdapter;

import java.io.File;

import android.app.Activity;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.os.Environment;
import android.support.v4.widget.SimpleCursorAdapter;
import android.widget.ListView;

import com.example.day14_sqlitedb.R;

public class SimpleCursoradapter extends Activity {

	ListView lv;
	SQLiteDatabase db;
	String path = Environment.getExternalStorageDirectory().getAbsolutePath()
			+ File.separator + "Download" + File.separator + "test.db";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		lv = (ListView) findViewById(R.id.lv);
		db = SQLiteDatabase.openDatabase(path, null,
				SQLiteDatabase.OPEN_READWRITE);
		Cursor c = db.rawQuery("select * from person", null);
		SimpleCursorAdapter adapter = new SimpleCursorAdapter(
				getApplicationContext(), R.layout.style, c, new String[] {
						"name", "sex", "age", "love" }, new int[] { R.id.name,
						R.id.sex, R.id.age, R.id.love },
				SimpleCursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER);
		lv.setAdapter(adapter);

	}
}

第三种自定义适配器CursorAdapter：

package com.zidiyiAdapter;

import java.io.File;

import android.app.Activity;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.os.Environment;
import android.support.v4.widget.CursorAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.TextView;

import com.example.day14_sqlitedb.R;

public class MyCursorAdapter extends Activity{

	ListView lv;
	SQLiteDatabase db;
	String path = Environment.getExternalStorageDirectory().getAbsolutePath()
			+ File.separator + "Download" + File.separator + "test.db";

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		lv=(ListView) findViewById(R.id.lv);
		db=SQLiteDatabase.openDatabase(path, null, SQLiteDatabase.OPEN_READWRITE);
		String sql="select * from person";
		Cursor c=db.rawQuery(sql, null);
		MyAdapter adapter=new MyAdapter(getApplicationContext(), c);	
		
	}
	public class MyAdapter extends CursorAdapter
	{

		public MyAdapter(Context context, Cursor c) {
			super(context, c);
			// TODO Auto-generated constructor stub
		}
		// newView 返回item布局  view 给 bindView
		@Override
		public View newView(Context context, Cursor c, ViewGroup parent) {
			return LayoutInflater.from(context).inflate(R.layout.style,null);
		}
		// 参数1：newVIew 里返回的View视图
		@Override
		public void bindView(View view, Context context, Cursor c) {
			TextView name=(TextView) view.findViewById(R.id.name);
			TextView sex=(TextView) view.findViewById(R.id.sex);
			TextView age=(TextView) view.findViewById(R.id.age);
			TextView love=(TextView) view.findViewById(R.id.love);
			name.setText(c.getString(c.getColumnIndex("name")));
			sex.setText(c.getString(c.getColumnIndex("sex")));
			age.setText(c.getInt(c.getColumnIndex("age")));
			love.setText(c.getString(c.getColumnIndex("love")));

			
		}
		
	}
}

三种共用的主布局文件：

三种共用的样式布局文件：