1 /* 2 * Copyright (C) 2019 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.settings.system; 18 19 import android.app.Activity; 20 import android.app.AlertDialog; 21 import android.content.DialogInterface; 22 import android.content.res.Resources; 23 import android.graphics.Bitmap; 24 import android.graphics.BitmapFactory; 25 import android.graphics.drawable.Drawable; 26 import android.os.Bundle; 27 import android.os.SystemProperties; 28 import android.text.TextUtils; 29 import android.view.Gravity; 30 import android.view.View; 31 import android.widget.ImageView; 32 import android.widget.TextView; 33 34 import androidx.annotation.VisibleForTesting; 35 36 import com.android.car.settings.R; 37 38 import java.util.Locale; 39 40 /** 41 * Code drop from {@link com.android.settings.RegulatoryInfoDisplayActivity}. 42 * 43 * {@link Activity} that displays regulatory information for the "Regulatory information" 44 * preference item, and when "*#07#" is dialed on the Phone keypad. To enable this feature, 45 * set the "config_show_regulatory_info" boolean to true in a device overlay resource, and in the 46 * same overlay, either add a drawable named "regulatory_info.png" containing a graphical version 47 * of the required regulatory info (If ro.bootloader.hardware.sku property is set use 48 * "regulatory_info_<sku>.png where sku is ro.bootloader.hardware.sku property value in lowercase"), 49 * or add a string resource named "regulatory_info_text" with an HTML version of the required 50 * information (text will be centered in the dialog). 51 */ 52 public class RegulatoryInfoDisplayActivity extends Activity implements 53 DialogInterface.OnDismissListener { 54 55 private static final String DEFAULT_REGULATORY_INFO_FILEPATH = 56 "/data/misc/elabel/regulatory_info.png"; 57 private static final String REGULATORY_INFO_FILEPATH_TEMPLATE = 58 "/data/misc/elabel/regulatory_info_%s.png"; 59 60 private final String mRegulatoryInfoResource = "regulatory_info"; 61 62 /** 63 * Display the regulatory info graphic in a dialog window. 64 */ 65 @Override onCreate(Bundle savedInstanceState)66 protected void onCreate(Bundle savedInstanceState) { 67 super.onCreate(savedInstanceState); 68 Resources resources = getResources(); 69 70 if (!resources.getBoolean(R.bool.config_show_regulatory_info)) { 71 finish(); // No regulatory info to display for this device. 72 } 73 74 AlertDialog.Builder builder = new AlertDialog.Builder(this) 75 .setTitle(R.string.regulatory_labels) 76 .setOnDismissListener(this); 77 78 boolean regulatoryInfoDrawableExists = false; 79 80 String regulatoryInfoFile = getRegulatoryInfoImageFileName(); 81 Bitmap regulatoryInfoBitmap = BitmapFactory.decodeFile(regulatoryInfoFile); 82 83 if (regulatoryInfoBitmap != null) { 84 regulatoryInfoDrawableExists = true; 85 } 86 87 int resId = 0; 88 if (!regulatoryInfoDrawableExists) { 89 resId = getImageResourceId(); 90 } 91 if (resId != 0) { 92 try { 93 Drawable d = getDrawable(resId); 94 // Set to false if the width or height is <= 2. 95 // (missing PNG can return an empty 2x2 pixel Drawable) 96 regulatoryInfoDrawableExists = (d.getIntrinsicWidth() > 2 97 && d.getIntrinsicHeight() > 2); 98 } catch (Resources.NotFoundException ignored) { 99 regulatoryInfoDrawableExists = false; 100 } 101 } 102 103 CharSequence regulatoryText = resources.getText(R.string.regulatory_info_text); 104 105 if (regulatoryInfoDrawableExists) { 106 View view = getLayoutInflater().inflate(R.layout.regulatory_info, null); 107 ImageView image = view.findViewById(R.id.regulatory_info); 108 if (regulatoryInfoBitmap != null) { 109 image.setImageBitmap(regulatoryInfoBitmap); 110 } else { 111 image.setImageResource(resId); 112 } 113 builder.setView(view); 114 builder.show(); 115 } else if (regulatoryText.length() > 0) { 116 builder.setMessage(regulatoryText); 117 AlertDialog dialog = builder.show(); 118 // We have to show the dialog first, or the setGravity() call will throw a NPE. 119 TextView messageText = (TextView) dialog.findViewById(android.R.id.message); 120 messageText.setGravity(Gravity.CENTER); 121 } else { 122 // Neither drawable nor text resource exists, finish activity. 123 finish(); 124 } 125 } 126 getImageResourceId()127 private int getImageResourceId() { 128 // Use regulatory_info by default. 129 int resId = getResources().getIdentifier( 130 mRegulatoryInfoResource, "drawable", getPackageName()); 131 132 // When hardware sku property exists, use regulatory_info_<sku> resource if valid. 133 String sku = getSku(); 134 if (!TextUtils.isEmpty(sku)) { 135 String regulatory_info_res = mRegulatoryInfoResource + "_" + sku.toLowerCase(); 136 int id = getResources().getIdentifier( 137 regulatory_info_res, "drawable", getPackageName()); 138 if (id != 0) { 139 resId = id; 140 } 141 } 142 return resId; 143 } 144 145 @Override onDismiss(DialogInterface dialog)146 public void onDismiss(DialogInterface dialog) { 147 finish(); 148 } 149 150 @VisibleForTesting getSku()151 static String getSku() { 152 return SystemProperties.get("ro.boot.hardware.sku", ""); 153 } 154 155 @VisibleForTesting getRegulatoryInfoImageFileName()156 static String getRegulatoryInfoImageFileName() { 157 String sku = getSku(); 158 if (TextUtils.isEmpty(sku)) { 159 return DEFAULT_REGULATORY_INFO_FILEPATH; 160 } else { 161 return String.format(Locale.US, REGULATORY_INFO_FILEPATH_TEMPLATE, sku.toLowerCase()); 162 } 163 } 164 } 165
