1/* 2 * Copyright (C) 2013 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 17package com.android.settings; 18 19import android.app.Activity; 20import android.app.AlertDialog; 21import android.content.DialogInterface; 22import android.content.res.Resources; 23import android.graphics.Bitmap; 24import android.graphics.BitmapFactory; 25import android.graphics.drawable.Drawable; 26import android.os.Bundle; 27import android.os.SystemProperties; 28import android.support.annotation.VisibleForTesting; 29import android.text.TextUtils; 30import android.view.Gravity; 31import android.view.View; 32import android.widget.ImageView; 33import android.widget.TextView; 34 35import java.util.Locale; 36 37/** 38 * {@link Activity} that displays regulatory information for the "Regulatory information" 39 * preference item, and when "*#07#" is dialed on the Phone keypad. To enable this feature, 40 * set the "config_show_regulatory_info" boolean to true in a device overlay resource, and in the 41 * same overlay, either add a drawable named "regulatory_info.png" containing a graphical version 42 * of the required regulatory info (If ro.bootloader.hardware.sku property is set use 43 * "regulatory_info_<sku>.png where sku is ro.bootloader.hardware.sku property value in lowercase"), 44 * or add a string resource named "regulatory_info_text" with an HTML version of the required 45 * information (text will be centered in the dialog). 46 */ 47public class RegulatoryInfoDisplayActivity extends Activity implements 48 DialogInterface.OnDismissListener { 49 50 private final String REGULATORY_INFO_RESOURCE = "regulatory_info"; 51 private static final String DEFAULT_REGULATORY_INFO_FILEPATH = 52 "/data/misc/elabel/regulatory_info.png"; 53 private static final String REGULATORY_INFO_FILEPATH_TEMPLATE = 54 "/data/misc/elabel/regulatory_info_%s.png"; 55 56 /** 57 * Display the regulatory info graphic in a dialog window. 58 */ 59 @Override 60 protected void onCreate(Bundle savedInstanceState) { 61 super.onCreate(savedInstanceState); 62 Resources resources = getResources(); 63 64 if (!resources.getBoolean(R.bool.config_show_regulatory_info)) { 65 finish(); // no regulatory info to display for this device 66 } 67 68 AlertDialog.Builder builder = new AlertDialog.Builder(this) 69 .setTitle(R.string.regulatory_labels) 70 .setOnDismissListener(this); 71 72 boolean regulatoryInfoDrawableExists = false; 73 74 final String regulatoryInfoFile = getRegulatoryInfoImageFileName(); 75 final Bitmap regulatoryInfoBitmap = BitmapFactory.decodeFile(regulatoryInfoFile); 76 77 if (regulatoryInfoBitmap != null) { 78 regulatoryInfoDrawableExists = true; 79 } 80 81 int resId = 0; 82 if (!regulatoryInfoDrawableExists) { 83 resId = getResourceId(); 84 } 85 if (resId != 0) { 86 try { 87 Drawable d = getDrawable(resId); 88 // set to false if the width or height is <= 2 89 // (missing PNG can return an empty 2x2 pixel Drawable) 90 regulatoryInfoDrawableExists = (d.getIntrinsicWidth() > 2 91 && d.getIntrinsicHeight() > 2); 92 } catch (Resources.NotFoundException ignored) { 93 regulatoryInfoDrawableExists = false; 94 } 95 } 96 97 CharSequence regulatoryText = resources.getText(R.string.regulatory_info_text); 98 99 if (regulatoryInfoDrawableExists) { 100 View view = getLayoutInflater().inflate(R.layout.regulatory_info, null); 101 ImageView image = view.findViewById(R.id.regulatoryInfo); 102 if (regulatoryInfoBitmap != null) { 103 image.setImageBitmap(regulatoryInfoBitmap); 104 } else { 105 image.setImageResource(resId); 106 } 107 builder.setView(view); 108 builder.show(); 109 } else if (regulatoryText.length() > 0) { 110 builder.setMessage(regulatoryText); 111 AlertDialog dialog = builder.show(); 112 // we have to show the dialog first, or the setGravity() call will throw a NPE 113 TextView messageText = (TextView) dialog.findViewById(android.R.id.message); 114 messageText.setGravity(Gravity.CENTER); 115 } else { 116 // neither drawable nor text resource exists, finish activity 117 finish(); 118 } 119 } 120 121 private int getResourceId() { 122 // Use regulatory_info by default. 123 int resId = getResources().getIdentifier( 124 REGULATORY_INFO_RESOURCE, "drawable", getPackageName()); 125 126 // When hardware sku property exists, use regulatory_info_<sku> resource if valid. 127 final String sku = getSku(); 128 if (!TextUtils.isEmpty(sku)) { 129 String regulatory_info_res = REGULATORY_INFO_RESOURCE + "_" + sku.toLowerCase(); 130 int id = getResources().getIdentifier( 131 regulatory_info_res, "drawable", getPackageName()); 132 if (id != 0) { 133 resId = id; 134 } 135 } 136 return resId; 137 } 138 139 @Override 140 public void onDismiss(DialogInterface dialog) { 141 finish(); // close the activity 142 } 143 144 @VisibleForTesting 145 public static String getSku() { 146 return SystemProperties.get("ro.boot.hardware.sku", ""); 147 } 148 149 @VisibleForTesting 150 public static String getRegulatoryInfoImageFileName() { 151 final String sku = getSku(); 152 if (TextUtils.isEmpty(sku)) { 153 return DEFAULT_REGULATORY_INFO_FILEPATH; 154 } else { 155 return String.format(Locale.US, REGULATORY_INFO_FILEPATH_TEMPLATE, 156 sku.toLowerCase()); 157 } 158 } 159} 160