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我在sqliteadmin 创建好数据库StuDB，里面的表如下：
650) this.width=650;”>
将创建好的数据库在DDMS中点击
650) this.width=650;”>导入到data/data/程序的包名/
650) this.width=650;”>
SQLiteTestActivity.java
package com.lingdududu.test; import Android.app.Activity; import android.database.Cursor; import android.database.sqlite.SQLiteDatabase; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public class SQLiteTestActivity extends Activity { /** Called when the activity is first created. */ private EditText studentText; private EditText teacherText; private Button queryBtn; SQLiteDatabase stuDb; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); studentText = (EditText)findViewById(R.id.stu_name); teacherText = (EditText)findViewById(R.id.teacher_name); queryBtn = (Button)findViewById(R.id.query); queryBtn.setOnClickListener(new queryListener()); } class queryListener implements OnClickListener{ @Override public void onClick(View v) { //调用查询方法 query(); stuDb.close(); } } //查询方法 private void query() { //打开或者创建数据库 stuDb = SQLiteDatabase.openOrCreateDatabase(“data/data/com.lingdududu.test/StuDB.s3db”, null); try { String string =studentText.getText().toString(); String sql = “Select sname from Student where snumber=”+string; Cursor cursor = stuDb.rawQuery(sql,null); cursor.moveToFirst(); teacherText.setText(cursor.getString(cursor.getColumnIndex(“sname”))); } catch (Exception e) { Toast.makeText(this, “请检查输入的学生学号是否正确”, Toast.LENGTH_LONG).show(); } } }
main.xml
?xml version=”1.0″ encoding=”utf-8″? LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android” android:orientation=”vertical” android:layout_width=”fill_parent” android:layout_height=”fill_parent” TextView android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:text=”@string/input_name” / EditText android:id=”@+id/stu_name” android:layout_width=”fill_parent” android:layout_height=”wrap_content” / Button android:id=”@+id/query” android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:text=”开始查询” / TextView android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:text=”@string/teacher_name” / EditText android:id=”@+id/teacher_name” android:layout_width=”fill_parent” android:layout_height=”wrap_content” android:editable=”false” / /LinearLayout
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