Android -- sqlite数据库随apk发布

public class TestSqlDatabase{
    
    private static final String DATABASE_PATH = "/data/data/your.package.name/databases";

    private static final int DATABASE_VERSION = 0;

    private static final String DATABASE_NAME = "test.db";
    
    private static String outFileName = DATABASE_PATH + "/" + DATABASE_NAME;
    
    private Context context;

　　 private SQLiteDatabase database;
    
    public TestSqlDatabase(Context context) {
        this.context = context;
        
        File file = new File(outFileName);
        if (file.exists()) {
            database = SQLiteDatabase.openOrCreateDatabase(outFileName, null);
            if (database.getVersion() != DATABASE_VERSION) {
                database.close();
                file.delete();    
            }
        }
        try {
            buildDatabase();
        } catch (Exception e) {
            e.printStackTrace();
        }
        
    }

    private void buildDatabase() throws Exception{
        InputStream myInput = context.getResources().openRawResource(R.raw.test);
        File file = new File(outFileName);
        
        File dir = new File(DATABASE_PATH);
        if (!dir.exists()) {
            if (!dir.mkdir()) {
                throw new Exception("创建失败");
            }
        }
        
        if (!file.exists()) {            
            try {
                OutputStream myOutput = new FileOutputStream(outFileName);
                
                byte[] buffer = new byte[1024];
                int length;
                while ((length = myInput.read(buffer))>0){
                    myOutput.write(buffer, 0, length);
                }
                myOutput.close();
                myInput.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        
        }
    }
}