我正在尝试在JSF中打井字游戏。我有一个二维矩阵(3x3),其值分别为0、1或2。因此,一开始它们全为0,并且根据播放器而切换为1或2。
我正在尝试从Bean中的方法获取按钮的图像,该方法读取矩阵中的值并为其提供适当的图像(无,X或O);
<h:form id="board">
<!-- id string i+j -->
<h:commandButton action="#{some_action}" image="#{beanJogo.btnImg()}" style="width:200px;height:200px"> <f:param name="btn" value="00"/></h:commandButton>
<h:commandButton action="#{some_action}" image="#{beanJogo.btnImg()}" style="width:200px;height:200px"> <f:param name="btn" value="01"/></h:commandButton>
<h:commandButton action="#{some_action}" image="#{beanJogo.btnImg()}" style="width:200px;height:200px"> <f:param name="btn" value="02"/></h:commandButton>
<br />
<h:commandButton action="#{some_action}" image="#{beanJogo.btnImg()}" style="width:200px;height:200px"> <f:param name="btn" value="10"/></h:commandButton>
<h:commandButton action="#{some_action}" image="#{beanJogo.btnImg()}" style="width:200px;height:200px"> <f:param name="btn" value="11"/></h:commandButton>
<h:commandButton action="#{some_action}" image="#{beanJogo.btnImg()}" style="width:200px;height:200px"> <f:param name="btn" value="12"/></h:commandButton>
<br />
<h:commandButton action="#{some_action}" image="#{beanJogo.btnImg()}" style="width:200px;height:200px"> <f:param name="btn" value="20"/></h:commandButton>
<h:commandButton action="#{some_action}" image="#{beanJogo.btnImg()}" style="width:200px;height:200px"> <f:param name="btn" value="21"/></h:commandButton>
<h:commandButton action="#{some_action}" image="#{beanJogo.btnImg()}" style="width:200px;height:200px"> <f:param name="btn" value="22"/></h:commandButton>
</h:form>
在豆子中我有
public String btnImg() {
String buttonId = getParameter("btn");
int i = Integer.parseInt(String.valueOf(buttonId.charAt(0)));
int j = Integer.parseInt(String.valueOf(buttonId.charAt(1)));
int[][] posi = x.getTabuleiro();
if (posi[i][j] == 0)
return "resources/images/clear.png";
else if (posi[i][j] == 1)
return "resources/images/black_x.png";
else
return "resources/images/black_o.png";
}
getTabuleiro给了我现在的董事会。如何获取按钮参数,以便知道哪个按钮是哪个?
答案 0 :(得分:0)
使用方法参数将是最简单的方法。
<h:commandButton action="#{some_action}" image="#{beanJogo.btnImg(2,2)}" style="width:200px;height:200px"></h:commandButton>
和您的Java-方法
public String btnImg(int i, int j) {
int[][] posi = x.getTabuleiro();
if (posi[i][j] == 0)
return "resources/images/clear.png";
else if (posi[i][j] == 1)
return "resources/images/black_x.png";
else
return "resources/images/black_o.png";
}