Android 打开资源raw文件

定义工具类：

package com.apicloud.A699.utils;
 
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;

import com.apicloud.A699.R;

public class LocationDBMgr {
    private final int BUFFER_SIZE = 1024;
    public static final String DB_NAME = "city_cn.s3db";
    public static final String PACKAGE_NAME = "com.apicloud.A699";
    public static final String DB_PATH = "/data"
            + Environment.getDataDirectory().getAbsolutePath() + "/"+ PACKAGE_NAME;
    private SQLiteDatabase database;
    private Context context;
    private File file=null;

    public LocationDBMgr(Context context) {
        this.context = context;
    }
 
    public void openDatabase() {
        this.database = this.openDatabase(DB_PATH + "/" + DB_NAME);
    }
    public SQLiteDatabase getDatabase(){
       return this.database;
    }
 
    private SQLiteDatabase openDatabase(String dbfile) {
        try {
           file = new File(dbfile);
            if (!file.exists()) {
               InputStream is = context.getResources().openRawResource(R.raw.city_cn);
               if(is!=null){
                  Log.e("cc", "is null");
               }else{
               }
               FileOutputStream fos = new FileOutputStream(dbfile);
               if(is!=null){
                  Log.e("cc", "fosnull");
               }else{
               }
                byte[] buffer = new byte[BUFFER_SIZE];
                int count = 0;
                while ((count =is.read(buffer)) > 0) {
                    fos.write(buffer, 0, count);
                      Log.e("cc", "while");
                   fos.flush();
                }
                fos.close();
                is.close();
            }
            database = SQLiteDatabase.openOrCreateDatabase(dbfile,null);
            return database;
        } catch (FileNotFoundException e) {
            Log.e("cc", "File not found");
            e.printStackTrace();
        } catch (IOException e) {
            Log.e("cc", "IO exception");
            e.printStackTrace();
        } catch (Exception e){
           Log.e("cc", "exception "+e.toString());
        }
        return null;
    }
    public void closeDatabase() {
       if(this.database!=null)
          this.database.close();
    }
}

在需要地方调用：

public void initSpinner2(int pcode) {
    // private LocationDBMgr dbm;
   // private SQLiteDatabase db;
    dbm = new LocationDBMgr(this);
    dbm.openDatabase();
    db = dbm.getDatabase();
    list2 = new ArrayList<AddressItem>();

    try {
        String sql = "select * from city where pcode='" + pcode + "'";
        Cursor cursor = db.rawQuery(sql, null);
        while (cursor.moveToNext()) {
            int code = cursor.getInt(cursor.getColumnIndex("code"));
            String name = cursor.getString(cursor.getColumnIndex("name"));
            AddressItem myListItem = new AddressItem();
            myListItem.setName(name);
            myListItem.setPcode(code);
            list2.add(myListItem);
        }

    } catch (Exception e) {
        e.printStackTrace();
    }
    dbm.closeDatabase();
    db.close();

    AddressAdapter myAdapter = new AddressAdapter(this, list2);
    mSpCity.setAdapter(myAdapter);

}