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.tv.settings; 18 19 import android.app.Activity; 20 import android.app.Fragment; 21 import android.os.Bundle; 22 import android.support.annotation.Nullable; 23 import android.transition.Scene; 24 import android.transition.Slide; 25 import android.transition.Transition; 26 import android.transition.TransitionManager; 27 import android.util.Log; 28 import android.view.Gravity; 29 import android.view.ViewGroup; 30 import android.view.ViewTreeObserver; 31 32 public abstract class TvSettingsActivity extends Activity { 33 private static final String TAG = "TvSettingsActivity"; 34 35 private static final String SETTINGS_FRAGMENT_TAG = 36 "com.android.tv.settings.MainSettings.SETTINGS_FRAGMENT"; 37 38 @Override onCreate(@ullable Bundle savedInstanceState)39 protected void onCreate(@Nullable Bundle savedInstanceState) { 40 super.onCreate(savedInstanceState); 41 if (savedInstanceState == null) { 42 43 final ViewGroup root = findViewById(android.R.id.content); 44 root.getViewTreeObserver().addOnPreDrawListener( 45 new ViewTreeObserver.OnPreDrawListener() { 46 @Override 47 public boolean onPreDraw() { 48 root.getViewTreeObserver().removeOnPreDrawListener(this); 49 final Scene scene = new Scene(root); 50 scene.setEnterAction(() -> { 51 if (getFragmentManager().isStateSaved() 52 || getFragmentManager().isDestroyed()) { 53 Log.d(TAG, "Got torn down before adding fragment"); 54 return; 55 } 56 final Fragment fragment = createSettingsFragment(); 57 if (fragment != null) { 58 getFragmentManager().beginTransaction() 59 .add(android.R.id.content, fragment, 60 SETTINGS_FRAGMENT_TAG) 61 .commitNow(); 62 } 63 }); 64 65 final Slide slide = new Slide(Gravity.END); 66 slide.setSlideFraction( 67 getResources().getDimension(R.dimen.lb_settings_pane_width) 68 / root.getWidth()); 69 TransitionManager.go(scene, slide); 70 71 // Skip the current draw, there's nothing in it 72 return false; 73 } 74 }); 75 } 76 } 77 78 @Override finish()79 public void finish() { 80 final Fragment fragment = getFragmentManager().findFragmentByTag(SETTINGS_FRAGMENT_TAG); 81 if (isResumed() && fragment != null) { 82 final ViewGroup root = findViewById(android.R.id.content); 83 final Scene scene = new Scene(root); 84 scene.setEnterAction(() -> getFragmentManager().beginTransaction() 85 .remove(fragment) 86 .commitNow()); 87 final Slide slide = new Slide(Gravity.END); 88 slide.setSlideFraction( 89 getResources().getDimension(R.dimen.lb_settings_pane_width) / root.getWidth()); 90 slide.addListener(new Transition.TransitionListener() { 91 @Override 92 public void onTransitionStart(Transition transition) { 93 getWindow().setDimAmount(0); 94 } 95 96 @Override 97 public void onTransitionEnd(Transition transition) { 98 transition.removeListener(this); 99 TvSettingsActivity.super.finish(); 100 } 101 102 @Override 103 public void onTransitionCancel(Transition transition) { 104 } 105 106 @Override 107 public void onTransitionPause(Transition transition) { 108 } 109 110 @Override 111 public void onTransitionResume(Transition transition) { 112 } 113 }); 114 TransitionManager.go(scene, slide); 115 } else { 116 super.finish(); 117 } 118 } 119 createSettingsFragment()120 protected abstract Fragment createSettingsFragment(); 121 } 122