创建SimpleCursorAdapter 所指定的layout
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent"> <EditText android:id="@+id/my_title" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <EditText android:id="@+id/my_content" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout> <?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" android:orientation="vertical" tools:context="shortcut.song.com.myapplication.DBTestActivity"> <Button android:id="@+id/btn_db" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="DB"/> <EditText android:id="@+id/edit_title_db" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <EditText android:id="@+id/edit_content_db" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <ListView android:id="@+id/listview_db" android:layout_width="fill_parent" android:layout_height="fill_parent" android:divider="#0f25" android:dividerHeight="1px"/> </LinearLayout> package shortcut.song.com.myapplication; import android.content.Context; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteException; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.CursorAdapter; import android.widget.EditText; import android.widget.ListView; import android.widget.SimpleCursorAdapter; public class DBTestActivity extends AppCompatActivity { SQLiteDatabase db; Button btn = null; ListView listView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_dbtest); //创建或打开数据库（此处需要使用绝对路经） db = SQLiteDatabase.openOrCreateDatabase(this.getFilesDir().toString()+"/my.db3", null); listView = (ListView)findViewById(R.id.listview_db); btn = (Button)findViewById(R.id.btn_db); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //获取用户输入 String title = ((EditText)findViewById(R.id.edit_title_db)).getText().toString(); String content = ((EditText)findViewById(R.id.edit_content_db)).getText().toString(); try { insertData(db , title , content); Cursor cursor = db.rawQuery("select * from news_inf", null); inflateList(cursor); } catch (SQLiteException e) { //执行DDL创建数据表 //执行DDL创建数据表 db.execSQL("create table news_inf(_id integer primary key autoincrement," + " news_title varchar(50)," + " news_content varchar(255))"); //执行insert语句插入数据 insertData(db , title , content); //执行查询 Cursor cursor = db.rawQuery("select * from news_inf", null); inflateList(cursor); } } }); } private void insertData(SQLiteDatabase db, String title, String content){ //执行插入语句 //执行插入语句 db.execSQL("insert into news_inf values(null , ? , ?)" , new String[]{title , content}); } private void inflateList(Cursor cursor) { SimpleCursorAdapter simpleCursorAdapter = new SimpleCursorAdapter( DBTestActivity.this ,R.layout.db_line, cursor ,new String[]{"news_title", "news_content"} ,new int[]{R.id.my_title, R.id.my_content} , CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER); listView.setAdapter(simpleCursorAdapter); } @Override protected void onDestroy() { super.onDestroy(); if (db != null && db.isOpen()) { db.close(); } } }