package com.example.imputdatabase; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.os.Environment; import android.util.Log; public class DbManager { private Context context; private final int BUFFER_SIZE = 400000; public static final String DB_NAME = "legerdemian.db"; // 保存的数据库文件名 //注意这里的PACKAGE_NAME改成你的项目的包名字,如果你不用你的包名那么下面的FileOutputStream fos = new FileOutputStream(dbfile); //会抛出异常,当初本人就是在这卡了好久,因为没认真看代码 public static final String PACKAGE_NAME = "com.example.imputdatabase"; public static final String DB_PATH = "/data"+ Environment.getDataDirectory().getAbsolutePath() + "/" + PACKAGE_NAME; // 在手机里存放数据库的位置 public DbManager(Context context) { // TODO Auto-generated constructor stub this.context = context; openDatabase(); } private void openDatabase() { // TODO Auto-generated method stub String path = DB_PATH+"/"+DB_NAME; try { if (!(new File(path).exists())) {// 判断数据库文件是否存在,若不存在则执行导入,否则直接打开数据库 InputStream is = this.context.getResources().openRawResource( R.raw.legerdemain); // 欲导入的数据库 FileOutputStream fos = new FileOutputStream(path); byte[] buffer = new byte[BUFFER_SIZE]; int count = 0; while ((count = is.read(buffer)) > 0) { fos.write(buffer, 0, count); } fos.close(); is.close(); } SQLiteDatabase db = SQLiteDatabase.openOrCreateDatabase(path, null); } catch (FileNotFoundException e) { Log.e("Database", "File not found"); e.printStackTrace(); } catch (IOException e) { Log.e("Database", "IO exception"); e.printStackTrace(); } } }