怎么用上线了做网站,宁波模板建站代理,深圳网站建设51duoshi,gps建站教程需要获取按下时候的坐标和松开时候的坐标#xff0c;并将两者进行比较。 ①MainAbilitySlice.java文件
可以根据使用情况做修改代码中判断处的限制偏差范围。
package com.example.yeman.slice;import com.example.yeman.ResourceTable;
import ohos.aafwk.ability.Ability…需要获取按下时候的坐标和松开时候的坐标并将两者进行比较。 ①MainAbilitySlice.java文件
可以根据使用情况做修改代码中判断处的限制偏差范围。
package com.example.yeman.slice;import com.example.yeman.ResourceTable;
import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.agp.components.Button;
import ohos.agp.components.Component;
import ohos.agp.components.DirectionalLayout;
import ohos.agp.components.Text;
import ohos.media.image.common.Position;
import ohos.multimodalinput.event.MmiPoint;
import ohos.multimodalinput.event.TouchEvent;public class MainAbilitySlice extends AbilitySlice implements Component.TouchEventListener{float starX;float starY;float endX;float endY;Text txt;Overridepublic void onStart(Intent intent) {super.onStart(intent);super.setUIContent(ResourceTable.Layout_ability_main);//通过id找到布局对象其也可以理解是一种组件DirectionalLayout dl (DirectionalLayout) findComponentById(ResourceTable.Id_dl);//通过id找到文本框组件txt (Text) findComponentById(ResourceTable.Id_txt);//给整个布局添加滑动事件当在整个布局上滑动时就会不断调用本类中onTouchEvent方法dl.setTouchEventListener(this);}Overridepublic void onActive() {super.onActive();}Overridepublic void onForeground(Intent intent) {super.onForeground(intent);}Overridepublic boolean onTouchEvent(Component component, TouchEvent touchEvent) {//component表示滑动的哪个组件布局也是一种组件实际上这里示例就是在整个布局上进行的。//touchEvent表示动作对象按下滑动抬起。//获取当前手指对于屏幕进行的操作按下滑动抬起int action touchEvent.getAction(); //1表示按下2表示抬起3表示滑动移动if (action TouchEvent.PRIMARY_POINT_DOWN){MmiPoint position touchEvent.getPointerPosition(0);starX position.getX();starY position.getY();txt.setText(starX -- starY);}else if (action TouchEvent.PRIMARY_POINT_UP){MmiPoint position touchEvent.getPointerPosition(0);endX position.getX();endY position.getY();txt.setText(endX -- endY);//Math.abs(starY - endY) 100是做一个Y方向的限定范围下面类似。if (starX endX Math.abs(starY - endY) 100){txt.setText(左滑了);}else if (starX endX Math.abs(starY - endY) 100){txt.setText(右滑了);}else if (starY endY Math.abs(starX - endX) 100){txt.setText(上滑了);}else if (starY endY Math.abs(starX - endX) 100){txt.setText(下滑了);}else txt.setText(无效滑动请直一点);}else if (action TouchEvent.POINT_MOVE){txt.setText(滑动中...);}return true;}
}②ability _main.xml文件
?xml version1.0 encodingutf-8?
DirectionalLayoutohos:id$id:dlxmlns:ohoshttp://schemas.huawei.com/res/ohosohos:heightmatch_parentohos:widthmatch_parentohos:alignmentcenterohos:orientationverticalTextohos:id$id:txtohos:heightmatch_contentohos:widthmatch_contentohos:text这里是文本框ohos:text_size100//DirectionalLayout
