else if(id==R.id.btnDelet){

new AlertDialog.Builder(this).setTitle(\"删除提示框\").setMessage(\"确认删除该数据？\")
.setPositiveButton(\"确定\", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dao.deletALL(\"customers\");
shujuList();
}})
.setNegativeButton(\"取消\",null)
.show();

}