在Android中通过intent只能传递基本类型的数据，如果想要传递自定义的javabean，必须实现Serializable或者Parcelable接口。Parcelable接口是在Android新引入的接口。使用方法如下：

        
                
  1. publicclassDownloadItemimplementsParcelable{
    2.             
    3.             
  3. privateStringurl;
    4.             
  4. privateStringgameName;
    5.             
  5. privateStringgamePkgName;
    6.             
  6. privateinttotal_bytes;
    7.             
  7. privateintcurrent_bytes;
    8.             
  8. privateStringpath;
    9.             
  9. publicDownloadItem(){};
    10.             
    11.             
  11. publicDownloadItem(Stringurl,StringgameName,StringgamePkgName,
    12.             
  12. inttotal_bytes,intcurrent_bytes,Stringpath){
    13.             
  13. super();
    14.             
  14. this.url=url;
    15.             
  15. this.gameName=gameName;
    16.             
  16. this.gamePkgName=gamePkgName;
    17.             
  17. this.total_bytes=total_bytes;
    18.             
  18. this.current_bytes=current_bytes;
    19.             
  19. this.path=path;
    20.             
  20. }
    21.             
    22.             
  22. @Override
    23.             
  23. publicStringtoString(){
    24.             
  24. return"DownloadItem[url="+url+",gameName="+gameName
    25.             
  25. +",gamePkgName="+gamePkgName+",total_bytes="
    26.             
  26. +total_bytes+",current_bytes="+current_bytes+",path="
    27.             
  27. +path+"]";
    28.             
  28. }
    29.             
    30.             
  30. publicStringgetUrl(){
    31.             
    32.             
  32. returnurl;
    33.             
  33. }
    34.             
    35.             
  35. publicvoidsetUrl(Stringurl){
    36.             
  36. this.url=url;
    37.             
  37. }
    38.             
    39.             
  39. publicStringgetGameName(){
    40.             
  40. returngameName;
    41.             
  41. }
    42.             
    43.             
  43. publicvoidsetGameName(StringgameName){
    44.             
  44. this.gameName=gameName;
    45.             
  45. }
    46.             
    47.             
  47. publicStringgetGamePkgName(){
    48.             
  48. returngamePkgName;
    49.             
  49. }
    50.             
    51.             
  51. publicvoidsetGamePkgName(StringgamePkgName){
    52.             
  52. this.gamePkgName=gamePkgName;
    53.             
  53. }
    54.             
    55.             
  55. publicintgetTotal_bytes(){
    56.             
  56. returntotal_bytes;
    57.             
  57. }
    58.             
    59.             
  59. publicvoidsetTotal_bytes(inttotal_bytes){
    60.             
  60. this.total_bytes=total_bytes;
    61.             
  61. }
    62.             
    63.             
  63. publicintgetCurrent_bytes(){
    64.             
  64. returncurrent_bytes;
    65.             
  65. }
    66.             
    67.             
  67. publicvoidsetCurrent_bytes(intcurrent_bytes){
    68.             
  68. this.current_bytes=current_bytes;
    69.             
  69. }
    70.             
    71.             
  71. publicStringgetPath(){
    72.             
  72. returnpath;
    73.             
  73. }
    74.             
    75.             
  75. publicvoidsetPath(Stringpath){
    76.             
  76. this.path=path;
    77.             
  77. }
    78.             
    79.             
  79. @Override
    80.             
  80. publicintdescribeContents(){
    81.             
  81. //TODOAuto-generatedmethodstub
    82.             
  82. return0;
    83.             
  83. }
    84.             
    85.             
  85. @Override
    86.             
  86. publicvoidwriteToParcel(Parceldest,intflags){
    87.             
    88.             
    89.             
  89. dest.writeString(this.url);
    90.             
  90. dest.writeString(this.gameName);
    91.             
  91. dest.writeString(this.gamePkgName);
    92.             
  92. dest.writeInt(this.total_bytes);
    93.             
  93. dest.writeInt(this.current_bytes);
    94.             
  94. dest.writeString(this.path);
    95.             
  95. }
    96.             
    97.             
  97. publicstaticfinalParcelable.Creator<DownloadItem>CREATOR=newParcelable.Creator<DownloadItem>(){
    98.             
    99.             
  99. @Override
    100.             
  100. publicDownloadItemcreateFromParcel(Parcelsource){
    101.             
  101. returnnewDownloadItem(source.readString(),source.readString(),source.readString(),source.readInt(),source.readInt(),source.readString());
    102.             
  102. }
    103.             
    104.             
  104. @Override
    105.             
  105. publicDownloadItem[]newArray(intsize){
    106.             
  106. returnnewDownloadItem[size];
    107.             
  107. }
    108.             
  108. };
    109.             
  109. }
    110.

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