Android系列之Intent传递对象的两种方法
16lz
2021-01-23
在Android中intent传递对象主要有2种方式分别是，Bundle.putSerializable(Key,Object)和Bundle.putParcelable(Key, Object);当然这些Object是有一定的条件的，前者是实现了Serializable接口，而后者是实现了Parcelable接口，以下是我为大家做的一个实例
首先我们建立一个工程项目命名为：ObjectTestDemo
然后我们再修改main.xml布局文件，主要增加2个按钮
代码 
1 view plaincopy to clipboardprint ?
2
3 < ? xml version = " 1.0 " encoding = " utf-8 " ?>
4
5 < LinearLayout xmlns:android = " http://schemas.android.com/apk/res/android "
6
7 android:orientation = " vertical "
8
9 android:layout_width = " fill_parent "
10
11 android:layout_height = " fill_parent "
12
13 >
14
15 < TextView
16
17 android:layout_width = " fill_parent "
18
19 android:layout_height = " wrap_content "
20
21 android:text = " Welcome to Mr Jesson's blog. "
22
23 />
24
25 < Button
26
27 android:id = " @+id/button1 "
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29 android:layout_width = " fill_parent "
30
31 android:layout_height = " wrap_content "
32
33 android:text = " Serializable "
34
35 />
36
37 < Button
38
39 android:id = " @+id/button2 "
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41 android:layout_width = " fill_parent "
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43 android:layout_height = " wrap_content "
44
45 android:text = " Parcelable "
46
47 />
48
49 < / LinearLayout >
50
51 < ? xml version = " 1.0 " encoding = " utf-8 " ?>
52
53 < LinearLayout xmlns:android = " http://schemas.android.com/apk/res/android "
54
55 android:orientation = " vertical "
56
57 android:layout_width = " fill_parent "
58
59 android:layout_height = " fill_parent "
60
61 >
62
63 < TextView
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65 android:layout_width = " fill_parent " android:layout_height = " wrap_content "
66
67 android:text = " Welcome to Mr jesson's blog. "
68
69 />
70
71 < Button
72
73 android:id = " @+id/button1 "
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75 android:layout_width = " fill_parent "
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77 android:layout_height = " wrap_content "
78
79 android:text = " Serializable "
80
81 />
82
83 < Button
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85 android:id = " @+id/button2 "
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87 android:layout_width = " fill_parent "
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89 android:layout_height = " wrap_content "
90
91 android:text = " Parcelable "
92
93 />
94
95 < / LinearLayout >
96
接下来我们开始对工程进行实现，分别建立Person.java实现Serializable接口，另一个Book.java实现Parcelable接口
代码 1 package com.test.objecttran;
2
3 import java.io.Serializable;
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5 public class Person implements Serializable {
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7 private static final long serialVersionUID = - 7060210544600464481L ;
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9 private String name;
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11 private int age;
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13 public String getName() {
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15 return name;
16
17 }
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19 public void setName(String name) {
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21 this .name = name;
22
23 }
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25 public int getAge() {
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27 return age;
28
29 }
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31 public void setAge( int age) {
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33 this .age = age;
34
35 }
36
37 }
38
代码 1 package com.test.tutor.objecttran;
2
3 import java.io.Serializable;
4
5 public class Person implements Serializable {
6
7 private static final long serialVersionUID = - 7060210544600464481L ;
8
9 private String name;
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11 private int age;
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13 public String getName() {
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15 return name;
16
17 }
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19 public void setName(String name) {
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21 this .name = name;
22
23 }
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25 public int getAge() {
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27 return age;
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29 }
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31 public void setAge( int age) {
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33 this .age = age;
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35 }
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37 }
38
代码 1 package com.test.tutor.objecttran;
2
3
4
5 import android.os.Parcel;
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7 import android.os.Parcelable;
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9 public class Book implements Parcelable {
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11 private String bookName;
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13 private String author;
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15 private int publishTime;
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17 public String getBookName() {
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19 return bookName;
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21 }
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23 public void setBookName(String bookName) {
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25 this .bookName = bookName;
26
27 }
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29 public String getAuthor() {
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31 return author;
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33 }
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35 public void setAuthor(String author) {
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37 this .author = author;
38
39 }
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41 public int getPublishTime() {
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43 return publishTime;
44
45 }
46
47 public void setPublishTime( int publishTime) {
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49 this .publishTime = publishTime;
50
51 }
52
53 public static final Parcelable.Creator CREATOR = new Creator() {
54
55 public Book createFromParcel(Parcel source) {
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57 Book mBook = new Book();
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59 mBook.bookName = source.readString();
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61 mBook.author = source.readString();
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63 mBook.publishTime = source.readInt();
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65 return mBook;
66
67 }
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69 public Book[] newArray( int size) {
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71 return new Book[size];
72
73 }
74
75 };
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77 public int describeContents() {
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79 return 0 ;
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81 }
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83 public void writeToParcel(Parcel parcel, int flags) {
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85 parcel.writeString(bookName);
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87 parcel.writeString(author);
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89 parcel.writeInt(publishTime);
90
91 }
92
93 }
94
代码 1 package com.test.tutor.objecttran;
2
3 import android.os.Parcel;
4
5 import android.os.Parcelable;
6
7 public class Book implements Parcelable {
8
9 private String bookName;
10
11 private String author;
12
13 private int publishTime;
14
15 public String getBookName() {
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17 return bookName;
18
19 }
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21 public void setBookName(String bookName) { this .bookName = bookName;
22
23 }
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25 public String getAuthor() {
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27 return author;
28
29 }
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31 public void setAuthor(String author) {
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33 this .author = author;
34
35 }
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37 public int getPublishTime() {
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39 return publishTime;
40
41 }
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43 public void setPublishTime( int publishTime) {
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45 this .publishTime = publishTime;
46
47 }
48
49 public static final Parcelable.Creator CREATOR = new Creator() {
50
51 public Book createFromParcel(Parcel source) {
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53 Book mBook = new Book();
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55 mBook.bookName = source.readString();
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57 mBook.author = source.readString();
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59 mBook.publishTime = source.readInt();
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61 return mBook;
62
63 }
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65 public Book[] newArray( int size) {
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67 return new Book[size];
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69 }
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71 };
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73 public int describeContents() {
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75 return 0 ;
76
77 }
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79 public void writeToParcel(Parcel parcel, int flags) {
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81 parcel.writeString(bookName);
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83 parcel.writeString(author);
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85 parcel.writeInt(publishTime);
86
87 }
88
89 }
90
修改ObjectTranDemo.java,并且新建两个Activity,一个是ObjectTranDemo1.java,别一个是ObjectTranDemo2.java.分别用来显示Person对像数据，和Book对象数据
代码 1 package com.test.tutor.objecttran;
2
3 import android.app.Activity;
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5 import android.content.Intent;
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7 import android.os.Bundle;
8
9 import android.view.View;
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11 import android.view.View.OnClickListener;
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13 import android.widget.Button;
14
15 public class ObjectTranDemo extends Activity implements OnClickListener {
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17 private Button sButton,pButton;
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19 public final static String SER_KEY = " com.tutor.objecttran.ser " ;
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21 public final static String PAR_KEY = " com.tutor.objecttran.par " ;
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23 public void onCreate(Bundle savedInstanceState) {
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25 super .onCreate(savedInstanceState);
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27 setContentView(R.layout.main);
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29 setupViews();
30
31 }
32
33
34 public void setupViews(){
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36 sButton = (Button)findViewById(R.id.button1);
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38 pButton = (Button)findViewById(R.id.button2);
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40 sButton.setOnClickListener( this );
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42 pButton.setOnClickListener( this );
43
44 }
45
46 // Serializeable传递对象的方法
47
48 public void SerializeMethod(){
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50 Person mPerson = new Person();
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52 mPerson.setName( " frankie " );
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54 mPerson.setAge( 25 );
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56 Intent mIntent = new Intent( this ,ObjectTranDemo1. class );
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58 Bundle mBundle = new Bundle();
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60 mBundle.putSerializable(SER_KEY,mPerson);
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62 mIntent.putExtras(mBundle);
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64 startActivity(mIntent);
65
66 }
67
68 // Pacelable传递对象方法
69
70 public void PacelableMethod(){
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72 Book mBook = new Book();
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74 mBook.setBookName( " Android Tutor " );
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76 mBook.setAuthor( " Frankie " );
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78 mBook.setPublishTime( 2010 );
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80 Intent mIntent = new Intent( this ,ObjectTranDemo2. class );
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82 Bundle mBundle = new Bundle();
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84 mBundle.putParcelable(PAR_KEY, mBook);
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86 mIntent.putExtras(mBundle);
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88 startActivity(mIntent);
89
90 }
91
92 // 铵钮点击事件响应
93
94 public void onClick(View v) {
95
96 if (v == sButton){
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98 SerializeMethod();
99
100 } else {
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102 PacelableMethod();
103
104 }
105
106 }
107
108 }
109
代码 1 package com.test.tutor.objecttran;
2
3 import android.app.Activity;
4
5 import android.content.Intent;
6
7 import android.os.Bundle;
8
9 import android.view.View;
10
11 import android.view.View.OnClickListener;
12
13 import android.widget.Button;
14
15 public class ObjectTranDemo extends Activity implements OnClickListener {
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17
18
19 private Button sButton,pButton;
20
21 public final static String SER_KEY = " com.tutor.objecttran.ser " ;
22
23 public final static String PAR_KEY = " com.tutor.objecttran.par " ;
24
25 public void onCreate(Bundle savedInstanceState) {
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27 super .onCreate(savedInstanceState);
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29 setContentView(R.layout.main);
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31 setupViews();
32
33 }
34
35 public void setupViews(){
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37 sButton = (Button)findViewById(R.id.button1);
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39 pButton = (Button)findViewById(R.id.button2);
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41 sButton.setOnClickListener( this );
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43 pButton.setOnClickListener( this );
44
45 }
46
47 // Serializeable传递对象的方法
48
49 public void SerializeMethod(){
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51 Person mPerson = new Person();
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53 mPerson.setName( " frankie " );
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55 mPerson.setAge( 25 );
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57 Intent mIntent = new Intent( this ,ObjectTranDemo1. class );
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59 Bundle mBundle = new Bundle();
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61 mBundle.putSerializable(SER_KEY,mPerson);
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63 mIntent.putExtras(mBundle);
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65 startActivity(mIntent);
66
67 }
68
69 // Pacelable传递对象方法
70
71 public void PacelableMethod(){
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73 Book mBook = new Book();
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75 mBook.setBookName( " Android Tutor " );
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77 mBook.setAuthor( " Frankie " );
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79 mBook.setPublishTime( 2010 );
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81 Intent mIntent = new Intent( this ,ObjectTranDemo2. class );
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83 Bundle mBundle = new Bundle();
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85 mBundle.putParcelable(PAR_KEY, mBook);
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87 mIntent.putExtras(mBundle);
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89 startActivity(mIntent);
90
91 }
92
93 // 铵钮点击事件响应
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95 public void onClick(View v) {
96
97 if (v == sButton){
98
99 SerializeMethod();
100
101 } else {
102
103 PacelableMethod();
104
105 }
106
107 }
108
109 }
110
代码 1 package com.test.tutor.objecttran;
2
3 import android.app.Activity;
4 import android.os.Bundle;
5 import android.widget.TextView;
6
7 public class ObjectTranDemo1 extends Activity {
8
9 @Override
10
11 public void onCreate(Bundle savedInstanceState) {
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13 super .onCreate(savedInstanceState);
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15 TextView mTextView = new TextView( this );
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17 Person mPerson = (Person)getIntent().getSerializableExtra(ObjectTranDemo.SER_KEY);
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19 mTextView.setText( " You name is: " + mPerson.getName() + "" +
20
21 " You age is: " + mPerson.getAge());
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23 setContentView(mTextView);
24
25 }
26
27 }
28
代码 1 package com.test.tutor.objecttran;
2
3 import android.app.Activity;
4
5 import android.os.Bundle;
6
7 import android.widget.TextView;
8
9 public class ObjectTranDemo1 extends Activity {
10
11 @Override
12
13 public void onCreate(Bundle savedInstanceState) {
14
15 super .onCreate(savedInstanceState);
16
17 TextView mTextView = new TextView( this );
18
19 Person mPerson = (Person)getIntent().getSerializableExtra(ObjectTranDemo.SER_KEY);
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21 mTextView.setText( " You name is: " + mPerson.getName() + "" +
22
23 " You age is: " + mPerson.getAge());
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25 setContentView(mTextView);
26
27 }
28
29 }
30
代码 1 package com.test.tutor.objecttran;
2
3 import android.app.Activity;
4
5 import android.os.Bundle;
6
7 import android.widget.TextView;
8
9 public class ObjectTranDemo2 extends Activity {
10
11 public void onCreate(Bundle savedInstanceState) {
12
13 super .onCreate(savedInstanceState);
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15 TextView mTextView = new TextView( this );
16
17 Book mBook = (Book)getIntent().getParcelableExtra(ObjectTranDemo.PAR_KEY);
18
19 mTextView.setText( " Book name is: " + mBook.getBookName() + "" +
20
21 " Author is: " + mBook.getAuthor() + "" +
22
23 " PublishTime is: " + mBook.getPublishTime()); setContentView(mTextView);
24
25 }
26
27 }
28
代码 1 package com.test.tutor.objecttran;
2
3 import android.app.Activity;
4
5 import android.os.Bundle;
6
7 import android.widget.TextView;
8
9 public class ObjectTranDemo2 extends Activity {
10
11 public void onCreate(Bundle savedInstanceState) {
12
13 super .onCreate(savedInstanceState);
14
15 TextView mTextView = new TextView( this );
16
17 Book mBook = (Book)getIntent().getParcelableExtra(ObjectTranDemo.PAR_KEY);
18
19 mTextView.setText( " Book name is: " + mBook.getBookName() + "" +
20
21 " Author is: " + mBook.getAuthor() + "" +
22
23 " PublishTime is: " + mBook.getPublishTime());
24
25 setContentView(mTextView);
26
27 }
28
29 }
30
下面是最重要的环节：修改AndroidManifest.xml文件(将两个新增的Activity，ObjecttestDemo1,ObjecttestDemo2)申明一下代码如下(第14，15行):
代码 1 < ?xml version ="1.0" encoding ="utf-8" ? >
2
3 < manifest xmlns:android ="http://schemas.android.com/apk/res/android"
4
5 package ="com.test.tutor.objecttran"
6
7 android:versionCode ="1"
8
9 android:versionName ="1.0" >
10
11 < application android:icon ="@drawable/icon" android:label ="@string/app_name" >
12
13 < activity android:name =".ObjectTranDemo"
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15 android:label ="@string/app_name" >
16
17 < intent-filter >
18
19 < action android:name ="android.intent.action.MAIN" />
20
21 < category android:name ="android.intent.category.LAUNCHER" />
22
23 < /intent-filter >
24
25 < /activity >
26
27 < activity android:name =".ObjecttestDemo1" >< /activity >
28
29 < activity android:name =".ObjecttestDemo2" >< /activity >
30
31 < /application >
32
33 < uses-sdk android:minSdkVersion ="7" />
34
35 < /manifest >
36
37 < ?xml version ="1.0" encoding ="utf-8" ? >
38
39 < manifest xmlns:android ="http://schemas.android.com/apk/res/android"
40
41 package ="com.test.tutor.objecttran"
42
43 android:versionCode ="1"
44
45 android:versionName ="1.0" >
46
47 < application android:icon ="@drawable/icon" android:label ="@string/app_name" >
48
49 < activity android:name =".ObjectTranDemo"
50
51 android:label ="@string/app_name" >
52
53 < intent-filter >
54
55 < action android:name ="android.intent.action.MAIN" />
56
57 < category android:name ="android.intent.category.LAUNCHER" />
58
59 < /intent-filter >
60
61 < /activity >
62
63 < activity android:name =".ObjecttestDemo1" >< /activity >
64
65 < activity android:name =".ObjecttestDemo2" >< /activity >
66
67 < /application >
68
69 < uses-sdk android:minSdkVersion ="7" />
70
71 < /manifest >
72
再接下来就是编译，运行看效果了哈！！！
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