1*d353a188SXin Li 2*d353a188SXin LiAndroid ElevationBasic Sample 3*d353a188SXin Li=================================== 4*d353a188SXin Li 5*d353a188SXin LiThis sample demonstrates ways to move a view in the z-axis using 6*d353a188SXin Li`setTranslationZ()`. This method was introduced in API Level 21 ('Lollipop'). 7*d353a188SXin Li 8*d353a188SXin LiIntroduction 9*d353a188SXin Li------------ 10*d353a188SXin Li 11*d353a188SXin LiThis sample uses two shapes, a circle and a square, and it demonstrates two 12*d353a188SXin Lialternative ways to move a view in the z-axis. The first shape, the circle, 13*d353a188SXin Lihas a fixed elevation, which is defined in XML. The second view, the square, 14*d353a188SXin Lichanges its elevation using [setTranslationZ()][1] when a user touches it: 15*d353a188SXin Li 16*d353a188SXin Li shape2.setOnTouchListener(new View.OnTouchListener() { 17*d353a188SXin Li @Override 18*d353a188SXin Li public boolean onTouch(View view, MotionEvent motionEvent) { 19*d353a188SXin Li int action = motionEvent.getActionMasked(); 20*d353a188SXin Li /* Raise view on ACTION_DOWN and lower it on ACTION_UP. */ 21*d353a188SXin Li switch (action) { 22*d353a188SXin Li case MotionEvent.ACTION_DOWN: 23*d353a188SXin Li Log.d(TAG, "ACTION_DOWN on view."); 24*d353a188SXin Li view.setTranslationZ(120); 25*d353a188SXin Li break; 26*d353a188SXin Li case MotionEvent.ACTION_UP: 27*d353a188SXin Li Log.d(TAG, "ACTION_UP on view."); 28*d353a188SXin Li view.setTranslationZ(0); 29*d353a188SXin Li break; 30*d353a188SXin Li default: 31*d353a188SXin Li return false; 32*d353a188SXin Li } 33*d353a188SXin Li return true; 34*d353a188SXin Li } 35*d353a188SXin Li }); 36*d353a188SXin Li 37*d353a188SXin LiThe elevation reverts back once the touch is removed. 38*d353a188SXin Li 39*d353a188SXin Li[1]: https://developer.android.com/training/material/shadows-clipping.html#Elevation 40*d353a188SXin Li 41*d353a188SXin LiPre-requisites 42*d353a188SXin Li-------------- 43*d353a188SXin Li 44*d353a188SXin Li- Android SDK 27 45*d353a188SXin Li- Android Build Tools v27.0.2 46*d353a188SXin Li- Android Support Repository 47*d353a188SXin Li 48*d353a188SXin LiScreenshots 49*d353a188SXin Li------------- 50*d353a188SXin Li 51*d353a188SXin Li<img src="screenshots/fixed.png" height="400" alt="Screenshot"/> <img src="screenshots/raised.png" height="400" alt="Screenshot"/> 52*d353a188SXin Li 53*d353a188SXin LiGetting Started 54*d353a188SXin Li--------------- 55*d353a188SXin Li 56*d353a188SXin LiThis sample uses the Gradle build system. To build this project, use the 57*d353a188SXin Li"gradlew build" command or use "Import Project" in Android Studio. 58*d353a188SXin Li 59*d353a188SXin LiSupport 60*d353a188SXin Li------- 61*d353a188SXin Li 62*d353a188SXin Li- Google+ Community: https://plus.google.com/communities/105153134372062985968 63*d353a188SXin Li- Stack Overflow: http://stackoverflow.com/questions/tagged/android 64*d353a188SXin Li 65*d353a188SXin LiIf you've found an error in this sample, please file an issue: 66*d353a188SXin Lihttps://github.com/googlesamples/android-ElevationBasic 67*d353a188SXin Li 68*d353a188SXin LiPatches are encouraged, and may be submitted by forking this project and 69*d353a188SXin Lisubmitting a pull request through GitHub. Please see CONTRIBUTING.md for more details. 70*d353a188SXin Li 71*d353a188SXin LiLicense 72*d353a188SXin Li------- 73*d353a188SXin Li 74*d353a188SXin LiCopyright 2017 The Android Open Source Project, Inc. 75*d353a188SXin Li 76*d353a188SXin LiLicensed to the Apache Software Foundation (ASF) under one or more contributor 77*d353a188SXin Lilicense agreements. See the NOTICE file distributed with this work for 78*d353a188SXin Liadditional information regarding copyright ownership. The ASF licenses this 79*d353a188SXin Lifile to you under the Apache License, Version 2.0 (the "License"); you may not 80*d353a188SXin Liuse this file except in compliance with the License. You may obtain a copy of 81*d353a188SXin Lithe License at 82*d353a188SXin Li 83*d353a188SXin Lihttp://www.apache.org/licenses/LICENSE-2.0 84*d353a188SXin Li 85*d353a188SXin LiUnless required by applicable law or agreed to in writing, software 86*d353a188SXin Lidistributed under the License is distributed on an "AS IS" BASIS, WITHOUT 87*d353a188SXin LiWARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 88*d353a188SXin LiLicense for the specific language governing permissions and limitations under 89*d353a188SXin Lithe License. 90
