1*d353a188SXin Li 2*d353a188SXin LiAndroid BasicMultitouch Sample 3*d353a188SXin Li=================================== 4*d353a188SXin Li 5*d353a188SXin LiSample demonstrates the use of [MotionEvent][1] properties to keep track of 6*d353a188SXin Liindividual touches across multiple touch events. 7*d353a188SXin Li 8*d353a188SXin Li[1]: http://developer.android.com/reference/android/view/MotionEvent.html 9*d353a188SXin Li 10*d353a188SXin LiIntroduction 11*d353a188SXin Li------------ 12*d353a188SXin Li 13*d353a188SXin LiThis is an example of keeping track of individual touches across multiple 14*d353a188SXin Li[MotionEvent][1]s. 15*d353a188SXin Li 16*d353a188SXin LiThis sample uses a custom View (`TouchDisplayView`) that responds to 17*d353a188SXin Litouch events and draws a colored circle for each touch point. The view holds 18*d353a188SXin Lidata related to a touch pointer, including its current position, pressure, 19*d353a188SXin Liand its past touch history. 20*d353a188SXin Li 21*d353a188SXin LiThe View draws graphics based on data associated with each touch event to a 22*d353a188SXin Licanvas. A large circle indicates the current position of a touch, while smaller 23*d353a188SXin Litrailing circles represent previous positions for that touch. 24*d353a188SXin LiThe size of the large circle is scaled depending on the pressure of the user's 25*d353a188SXin Litouch. 26*d353a188SXin Li 27*d353a188SXin Li[1]: http://developer.android.com/reference/android/view/MotionEvent.html 28*d353a188SXin Li 29*d353a188SXin LiPre-requisites 30*d353a188SXin Li-------------- 31*d353a188SXin Li 32*d353a188SXin Li- Android SDK 27 33*d353a188SXin Li- Android Build Tools v27.0.2 34*d353a188SXin Li- Android Support Repository 35*d353a188SXin Li 36*d353a188SXin LiScreenshots 37*d353a188SXin Li------------- 38*d353a188SXin Li 39*d353a188SXin Li<img src="screenshots/intro.png" height="400" alt="Screenshot"/> <img src="screenshots/touches.png" height="400" alt="Screenshot"/> 40*d353a188SXin Li 41*d353a188SXin LiGetting Started 42*d353a188SXin Li--------------- 43*d353a188SXin Li 44*d353a188SXin LiThis sample uses the Gradle build system. To build this project, use the 45*d353a188SXin Li"gradlew build" command or use "Import Project" in Android Studio. 46*d353a188SXin Li 47*d353a188SXin LiSupport 48*d353a188SXin Li------- 49*d353a188SXin Li 50*d353a188SXin Li- Google+ Community: https://plus.google.com/communities/105153134372062985968 51*d353a188SXin Li- Stack Overflow: http://stackoverflow.com/questions/tagged/android 52*d353a188SXin Li 53*d353a188SXin LiIf you've found an error in this sample, please file an issue: 54*d353a188SXin Lihttps://github.com/googlesamples/android-BasicMultitouch 55*d353a188SXin Li 56*d353a188SXin LiPatches are encouraged, and may be submitted by forking this project and 57*d353a188SXin Lisubmitting a pull request through GitHub. Please see CONTRIBUTING.md for more details. 58*d353a188SXin Li 59*d353a188SXin LiLicense 60*d353a188SXin Li------- 61*d353a188SXin Li 62*d353a188SXin LiCopyright 2017 The Android Open Source Project, Inc. 63*d353a188SXin Li 64*d353a188SXin LiLicensed to the Apache Software Foundation (ASF) under one or more contributor 65*d353a188SXin Lilicense agreements. See the NOTICE file distributed with this work for 66*d353a188SXin Liadditional information regarding copyright ownership. The ASF licenses this 67*d353a188SXin Lifile to you under the Apache License, Version 2.0 (the "License"); you may not 68*d353a188SXin Liuse this file except in compliance with the License. You may obtain a copy of 69*d353a188SXin Lithe License at 70*d353a188SXin Li 71*d353a188SXin Lihttp://www.apache.org/licenses/LICENSE-2.0 72*d353a188SXin Li 73*d353a188SXin LiUnless required by applicable law or agreed to in writing, software 74*d353a188SXin Lidistributed under the License is distributed on an "AS IS" BASIS, WITHOUT 75*d353a188SXin LiWARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 76*d353a188SXin LiLicense for the specific language governing permissions and limitations under 77*d353a188SXin Lithe License. 78
