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 com.android.car.radio; 18 19 import android.animation.ObjectAnimator; 20 import android.os.Bundle; 21 import android.support.v4.app.Fragment; 22 import android.support.v4.view.animation.FastOutSlowInInterpolator; 23 import android.view.LayoutInflater; 24 import android.view.View; 25 import android.view.ViewGroup; 26 27 /** 28 * A fragment that functions as the main display of the information relating to the current radio 29 * station. It also displays controls that allows the user to switch to different radio stations. 30 */ 31 public class MainRadioFragment extends Fragment implements FragmentWithFade { 32 private static final FastOutSlowInInterpolator sInterpolator = new FastOutSlowInInterpolator(); 33 private static final int FADE_OUT_START_DELAY_MS = 150; 34 private static final int FADE_ANIM_TIME_MS = 100; 35 36 private RadioController mRadioController; 37 private RadioPresetListClickListener mPresetListListener; 38 39 private View mRootView; 40 private View mMainDisplay; 41 42 /** 43 * Interface for a class that will be notified when the button to open the list of the user's 44 * favorite radio stations has been clicked. 45 */ 46 public interface RadioPresetListClickListener { 47 /** 48 * Method that will be called when the preset list button has been clicked. Clicking this 49 * button should open a display of the user's presets. 50 */ onPresetListClicked()51 void onPresetListClicked(); 52 } 53 54 @Override onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)55 public View onCreateView(LayoutInflater inflater, ViewGroup container, 56 Bundle savedInstanceState) { 57 mRootView = inflater.inflate(R.layout.radio_fragment, container, false); 58 59 mMainDisplay = mRootView.findViewById(R.id.radio_station_display_container); 60 61 mRootView.findViewById(R.id.radio_presets_list).setOnClickListener(v -> { 62 if (mPresetListListener != null) { 63 mPresetListListener.onPresetListClicked(); 64 } 65 }); 66 67 return mRootView; 68 } 69 70 @Override fadeOutContent()71 public void fadeOutContent() { 72 ObjectAnimator containerAlphaAnimator = 73 ObjectAnimator.ofFloat(mMainDisplay, View.ALPHA, 1f, 0f); 74 containerAlphaAnimator.setInterpolator(sInterpolator); 75 containerAlphaAnimator.setStartDelay(FADE_OUT_START_DELAY_MS); 76 containerAlphaAnimator.setDuration(FADE_ANIM_TIME_MS); 77 containerAlphaAnimator.start(); 78 } 79 80 @Override fadeInContent()81 public void fadeInContent() { 82 ObjectAnimator containerAlphaAnimator = 83 ObjectAnimator.ofFloat(mMainDisplay, View.ALPHA, 0f, 1f); 84 containerAlphaAnimator.setInterpolator(sInterpolator); 85 containerAlphaAnimator.setDuration(FADE_ANIM_TIME_MS); 86 containerAlphaAnimator.start(); 87 } 88 89 @Override onStart()90 public void onStart() { 91 super.onStart(); 92 93 mRadioController.initialize(mRootView); 94 mRadioController.setShouldColorStatusBar(true); 95 96 fadeInContent(); 97 } 98 99 @Override onStop()100 public void onStop() { 101 super.onStop(); 102 fadeOutContent(); 103 } 104 105 @Override onDestroy()106 public void onDestroy() { 107 mPresetListListener = null; 108 super.onDestroy(); 109 } 110 111 /** 112 * Returns a new instance of the {@link MainRadioFragment}. 113 * 114 * @param radioController The {@link RadioController} that is responsible for updating the UI 115 * of the returned fragment. 116 */ newInstance(RadioController radioController, RadioPresetListClickListener clickListener)117 static MainRadioFragment newInstance(RadioController radioController, 118 RadioPresetListClickListener clickListener) { 119 MainRadioFragment fragment = new MainRadioFragment(); 120 fragment.mRadioController = radioController; 121 fragment.mPresetListListener = clickListener; 122 123 return fragment; 124 } 125 } 126