android使用cursor进行查询时程序闪退

Question

 //创建数据库
    MyOpenHelper myHelper = new MyOpenHelper(ServerActivity.this);
    SQLiteDatabase db =myHelper.getReadableDatabase(); 
    insertDb();
    /*********************************************/
    //查询数据库
    MyOpenHelper dbHelper = new MyOpenHelper(ServerActivity.this);  
    //得到一个可写的数据库  
    SQLiteDatabase dbr =dbHelper.getReadableDatabase();  
    Cursor cursor = dbr.query("people", new String[]{"id","name","salary","phone"}, "id=?", new String[]{"0"}, null, null, null);
}
    数据库创建完成后，加入了
    Cursor cursor = dbr.query("people", new String[]{"id","name","salary","phone"}, "id=?", new String[]{"0"}, null, null, null);
}
    这句之后，程序就闪退了

Answer 1

查看一下logcat1的错误日志，cursor是否为空，用完是否释放