1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.system.helpers; 18 19 import android.content.Context; 20 import android.os.Build; 21 import android.os.RemoteException; 22 import android.support.test.InstrumentationRegistry; 23 import android.support.test.uiautomator.UiDevice; 24 import android.view.WindowManager; 25 import android.util.DisplayMetrics; 26 27 /** 28 * Implement common helper methods for device. 29 */ 30 public class DeviceHelper { 31 32 public static final String PIXEL_XL = "Pixel XL"; 33 public static final String PIXEL = "Pixel"; 34 public static final String RYU = "Pixel C"; 35 // 600dp is the threshold value for 7-inch tablets. 36 private static final int TABLET_DP_THRESHOLD = 600; 37 public static final int LONG_TIMEOUT = 2000; 38 private static DeviceHelper sInstance = null; 39 private Context mContext = null; 40 private UiDevice mDevice = null; 41 DeviceHelper()42 public DeviceHelper() { 43 mContext = InstrumentationRegistry.getTargetContext(); 44 mDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation()); 45 } 46 getInstance()47 public static DeviceHelper getInstance() { 48 if (sInstance == null) { 49 sInstance = new DeviceHelper(); 50 } 51 return sInstance; 52 } 53 54 /** Returns true if the device is a tablet */ isTablet()55 public boolean isTablet() { 56 // Get screen density & screen size from window manager 57 WindowManager wm = (WindowManager) mContext.getSystemService( 58 Context.WINDOW_SERVICE); 59 DisplayMetrics metrics = new DisplayMetrics(); 60 wm.getDefaultDisplay().getMetrics(metrics); 61 // Determines the smallest screen width DP which is 62 // calculated as ( pixels * density - independent pixel unit ) / density. 63 // http://developer.android.com/guide/practices/screens_support.html. 64 int screenDensity = metrics.densityDpi; 65 int screenWidth = Math.min( 66 metrics.widthPixels, metrics.heightPixels); 67 int screenHeight = Math.max( 68 metrics.widthPixels, metrics.heightPixels); 69 int smallestScreenWidthDp = (Math.min(screenWidth, screenHeight) 70 * DisplayMetrics.DENSITY_DEFAULT) / screenDensity; 71 return smallestScreenWidthDp >= TABLET_DP_THRESHOLD; 72 } 73 isNexusExperienceDevice()74 public boolean isNexusExperienceDevice() { 75 // Get device model 76 String result = Build.MODEL; 77 if (result.trim().equalsIgnoreCase(PIXEL) || result.trim().equalsIgnoreCase(PIXEL_XL)) { 78 return true; 79 } 80 return false; 81 } 82 isRyuDevice()83 public boolean isRyuDevice() { 84 return Build.MODEL.trim().equalsIgnoreCase(RYU); 85 } 86 87 /** 88 * Device sleep and wake up 89 * @throws RemoteException, InterruptedException 90 */ sleepAndWakeUpDevice()91 public void sleepAndWakeUpDevice() throws RemoteException, InterruptedException { 92 mDevice.sleep(); 93 Thread.sleep(LONG_TIMEOUT); 94 mDevice.wakeUp(); 95 } 96 } 97