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標題: Android 跨進程傳遞對像 [打印本頁]
作者: 暗桌之光    時間: 2011-7-19 16:01
標題: Android 跨進程傳遞對像
android 跨進程傳遞對像必須實現Parcelable 「協議」，例如 public class StatusBarIcon 的對象要能夠實現傳遞功能，必須如此寫:
  1. /*
  2. * Copyright (C) 2010 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. *
  9. * Unless required by applicable law or agreed to in writing, software
  10. * distributed under the License is distributed on an "AS IS" BASIS,
  11. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12. * See the License for the specific language governing permissions and
  13. * limitations under the License.
  14. */


  17. package com.android.internal.statusbar;
  18. import android.os.Parcel;
  19. import android.os.Parcelable;

  21. /**
  22. * @hide
  23. */

  25. public class StatusBarIcon implements Parcelable {
  26. public String iconPackage;
  27. public int iconId;
  28. public int iconLevel;
  29. public boolean visible = true;
  30. public int number;
  31. private StatusBarIcon() {
  32. }
  33. public StatusBarIcon(String iconPackage, int iconId, int iconLevel) {
  34. this.iconPackage = iconPackage;
  35. this.iconId = iconId;
  36. this.iconLevel = iconLevel;
  37. }
  38. public StatusBarIcon(String iconPackage, int iconId, int iconLevel, int number) {
  39. this.iconPackage = iconPackage;
  40. this.iconId = iconId;
  41. this.iconLevel = iconLevel;
  42. this.number = number;
  43. }
  44. public String toString() {
  45. return "StatusBarIcon(pkg=" + this.iconPackage + " id=0x" + Integer.toHexString(this.iconId)
  46. + " level=" + this.iconLevel + " visible=" + visible+ " num=" + this.number + " )";
  47. }
  48. public StatusBarIcon clone() {
  49. StatusBarIcon that = new StatusBarIcon(this.iconPackage, this.iconId, this.iconLevel);
  50. that.visible = this.visible;
  51. that.number = this.number;
  52. return that;
  53. }


  56. /**
  57. * Unflatten the StatusBarIcon from a parcel.
  58. */
  59. public StatusBarIcon(Parcel in) {
  60. readFromParcel(in);
  61. }
  62. public void readFromParcel(Parcel in) {
  63. this.iconPackage = in.readString();
  64. this.iconId = in.readInt();
  65. this.iconLevel = in.readInt();
  66. this.visible = in.readInt() != 0;
  67. this.number = in.readInt();
  68. }


  71. public void writeToParcel(Parcel out, int flags) {
  72. out.writeString(this.iconPackage);
  73. out.writeInt(this.iconId);
  74. out.writeInt(this.iconLevel);
  75. out.writeInt(this.visible ? 1 : 0);
  76. out.writeInt(this.number);
  77. }


  80. public int describeContents() {
  81. return 0;
  82. }
  83. /**
  84. * Parcelable.Creator that instantiates StatusBarIcon objects
  85. */
  86. public static final Parcelable.Creator<StatusBarIcon> CREATOR
  87. = new Parcelable.Creator<StatusBarIcon>(){
  88. public StatusBarIcon createFromParcel(Parcel parcel)
  89. {
  90. return new StatusBarIcon(parcel);
  91. }
  92. public StatusBarIcon[] newArray(int size)
  93. {
  94. return new StatusBarIcon[size];
  95. }
  96. };
  97. }
複製代碼
作者: Q9Q9Q9Q9Q9    時間: 2011-7-22 10:32
感謝大大分享



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