Android多点触控的相关内容

文章 2023-12-19 来自：开发者社区

Android App接管手势处理TouchEvnet中单点触摸和多点触控的讲解及实战（附源码超简单实用）

运行有问题或需要源码请点赞关注收藏后评论区留言~~~一、单点触摸dispatchTouchEvent onInterceptTouchEvent onTouchEvent三个方法的输入参数都是手势事件MotionEvent，其中包含触摸动作的所有信息，各种手势操作都从MotionEvent中获取触摸信息并判断处理。下面是MotionEvent的常用方法getAction 获取当前的....

文章 2022-01-18 来自：开发者社区

【Android 应用开发】多点触控 ( 多点触控事件 | PointerId | PointerIndex | 坐标获取 | 触摸点个数 )

文章目录I . 多点触控事件II . PointerId 与 PointerIndex 简介III . 本次 PointerId 与 PointerIndex 获取IV . PointerId 与 PointerIndex 互相转化V . 触摸点个数获取 ( getPointerCount )VI . 触摸点坐标获取VII . 多点触控示例代码 ( 参考 )I . 多点触控事件1 . 多点触控....

文章 2017-11-16 来自：开发者社区

Android多点触控手势基础

处理多点触控手势多点触控就是同时把一根以上的手指放在屏幕上。再继续往下以前需要补充一些名词：触控手势：就是把一根或者几根手指放在屏幕上做各种动作，其中包括保留一根手指的前提下，拿起或者放下其余的手指。触控事件：在触控手势中，有手指移动或者离开屏幕的时候就会引发一个触控事件。这个事件就存放在MotionEvent中。在这个事件中，包含说与的触控数据。触控：手指碰到屏幕的时候就产生了一.....

文章 2017-11-15 来自：开发者社区

Android开发应用实例：简单计算器+多点触控

这个例子是在一个简单的整型计算器应用了多点触控：一点触控是进行加法运算,两点触控是减法运算,三点触控是乘法运算,四点触控是除法运算。还添加了选项菜单，菜单上的内容有：退出，帮助，清空。效果图：具体的代码： MainActivity.java package com.lingdududu.test; import android.app...

文章 2017-11-14 来自：开发者社区

【移动开发】Android中图片的多点触控和缩放

前几天做项目用到相机拍照，之后能对图片进行缩放，拖拽，在此我将其单独抽取出来，后面用到时直接拿来用就行了！效果图：注：这里不仅能按钮缩放，还能多点触摸缩放和拖拽功能！ 1.布局： 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31...

文章 2017-11-08 来自：开发者社区

Android笔记:触摸事件的分析与总结----多点触控

文章 2016-08-10 来自：开发者社区

Android官方开发文档Training系列课程中文版：手势处理之多点触控处理

原文地址：http://android.xsoftlab.net/training/gestures/multi.html 多点触控是指多个手指同时触摸屏幕的情况。这节课主要学习如何检测多点触控手势。记录多个触控点当多根手指同时触碰到屏幕时，系统会产生以下触摸事件： ACTION_DOWN -第一个触碰到屏幕的点。它是手势的起始事件。这个触控点的指针数据在MotionEvent对象...

问答 2016-03-12 来自：开发者社区

android的多点触控问题

relativeLayout.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated met...

文章 2014-03-11 来自：开发者社区

Android中多点触控以及手势的基础知识

现在一般的android手机都会使用电容触摸屏，所以基本上都会支持多点触控，同样在android系统中应用程序可以使用多点触控的事件来完成各种手势和场景需求，下面简单讲一下如何使用多点触控： 1、相关接口和事件介绍 MotionEvent.getAction() 对于单点触控，我们由MotionEvent.getAction()就可以得到以下几种事件：ACTION_DOWN、ACTIO...

文章 2011-12-16 来自：开发者社区

关于android多点触控

原文：http://www.cnblogs.com/tianjian/archive/2011/12/01/2270657.html 最近项目需要一个多点触控缩放的功能。然后上网查了下资料总结一下：首先android sdk版本很重要，比如你在AndroidManifest.xml中指定android:minSdkVersion="4"  并且建工程的时候选的是android 2.2...

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