1 /* 2 * Copyright (C) 2017 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 com.example.android.cardview 18 19 import android.app.Fragment 20 import android.os.Bundle 21 import android.support.annotation.VisibleForTesting 22 import android.support.v7.widget.CardView 23 import android.util.Log 24 import android.view.LayoutInflater 25 import android.view.View 26 import android.view.ViewGroup 27 import android.widget.SeekBar 28 29 /** 30 * Fragment that demonstrates how to use [CardView]. 31 */ 32 class CardViewFragment : Fragment() { 33 34 private val TAG = "CardViewFragment" 35 36 // The [CardView] widget. 37 @VisibleForTesting lateinit var cardView: CardView 38 39 // SeekBar that changes the cornerRadius attribute for the cardView widget. 40 @VisibleForTesting lateinit var radiusSeekBar: SeekBar 41 42 // SeekBar that changes the Elevation attribute for the cardView widget. 43 @VisibleForTesting lateinit var elevationSeekBar: SeekBar 44 45 override fun onCreateView( 46 inflater: LayoutInflater, 47 container: ViewGroup?, 48 savedInstanceState: Bundle? 49 ): View { 50 return inflater.inflate(R.layout.fragment_card_view, container, false) 51 } 52 53 override fun onViewCreated(view: View, savedInstanceState: Bundle?) { 54 super.onViewCreated(view, savedInstanceState) 55 cardView = view.findViewById(R.id.cardview) 56 57 radiusSeekBar = view.findViewById(R.id.cardview_radius_seekbar) 58 radiusSeekBar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener { 59 override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) { 60 Log.d(TAG, "SeekBar Radius progress: $progress") 61 cardView.radius = progress.toFloat() 62 } 63 64 override fun onStartTrackingTouch(seekBar: SeekBar) = Unit // Do nothing 65 66 override fun onStopTrackingTouch(seekBar: SeekBar) = Unit // Do nothing 67 }) 68 69 elevationSeekBar = view.findViewById(R.id.cardview_elevation_seekbar) 70 elevationSeekBar.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener { 71 override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) { 72 Log.d(TAG, "SeekBar Elevation progress : $progress") 73 cardView.elevation = progress.toFloat() 74 } 75 76 override fun onStartTrackingTouch(seekBar: SeekBar) = Unit // Do nothing 77 78 override fun onStopTrackingTouch(seekBar: SeekBar) = Unit // Do nothing 79 }) 80 } 81 82 } 83
