昨天对详细界面的删除进行了编写，可以通过点击删除按钮跳转删除记录，并显示删除成功，并且跳转至详细项目信息界面

遇到的问题，由于界面跳转时账号信息没有传过来，导致界面闪退

今天学习运用复选框来对数据进行修改

db = helper_person.getWritableDatabase();        switch (view.getId())        {            case R.id.delete:            {                AlertDialog.Builder builder = new AlertDialog.Builder(this);                builder.setIcon(android.R.drawable.ic_dialog_info);                builder.setTitle("温馨提示");                builder.setMessage("确定要继续吗");                builder.setCancelable(true);                builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        Log.i("tag","------"+detailed_id+"-----");                       int count = db.delete("student","id=?",new String[] {String.valueOf(detailed_id)});                       if(count > 0)                       {                           Toast.makeText(detailedactivity.this, "删除成功", Toast.LENGTH_LONG).show();                           Log.i("tag","------删除成功-----");                           db.close();                           Intent intent = new Intent();                           intent.setClass(detailedactivity.this, loginactivity.class);                           intent.putExtra("user",account);                           startActivity(intent);                       }                    }                });                builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialog, int which) {                        Log.i("tag","------取消-----");                    }                });                builder.create().show();                break;            }