如何实现输入文本TextFiledTTF

 1 //获得可见区域的大小
 2     Size visibleSize = Director::getInstance()->getVisibleSize();
 3     
 4     //使用一个默认要先呈现一段文字
 5     TextFieldTTF *tf = TextFieldTTF::textFieldWithPlaceHolder("在这里输入", "宋体", 20);
 6     
 7     tf->setPosition(visibleSize.width/2, visibleSize.height/2);//设置显示的位置
 8 
 9     addChild(tf);
10     
11     //将输入文本与输入法链接
12     //添加监听器
13     auto listener = EventListenerTouchOneByOne::create();
14     listener->onTouchBegan = [tf](Touch *t, Event *event){//闭包函数
15         //先获取文本狂的边界区域.是否包括触摸点（Touch对象）
16         if (tf->getBoundingBox().containsPoint(t->getLocation())) {
17             tf->attachWithIME();//链接输入法
18             
19             log(">><><>");
20         }else{
21             tf->detachWithIME();
22         }
23         
24         return false;
25     };
26     //添加监听器
27     Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraphPriority(listener, tf);