Intent傳遞數據

http://blog.csdn.net/sukyle/article/details/4485505

1.Activity之間傳遞數據  

（1）利用Intent傳遞數據

       傳遞數據的Activity中:

      Intent intent = new Intent();
      intent.putExtra("name","Jon");//在Intent中加入鍵值對數據。鍵:name,值:Jon
        intent.setClass(Activity01.this,Activity02.class);
        Activity01.this.startActivity(intent);

       在取出數據的Activity中:

  Intent intent = getIntent();//獲得傳過來的Intent。
  String value = intent.getStringExtra("name");//根據鍵name取出值。

（2）利用Bundle傳遞數據

傳遞數據的Activity:

  Intent intent = new Intent();
  Bundle myBundle = new Bundle();
  myBundle.putString("Key_Name","Tom");
  intent.putExtras(myBundle);
  intent.setClass(Activity01.this,Activity02.class);
  Activity01.this.startActivity(intent);

取出數據的Activity:

   Bundle getBundle = getIntent().getExtras();
   String value = getBundle.getString("Key_Name");

（3）利用startActivityForResult傳遞數據

startActivityForResult可以把數據傳過去，還可以把那邊的數據傳過來。

傳遞數據的Activity中:

   Intent intent      = new Intent();
   Bundle bundle  = new Bundle();
   bundle.putString("data", "somedata");//把數據傳過去
   intent.putExtras(bundle);
   intent.setClass(Activity01.this, Activity02.class);
   startActivityForResult(intent, 10);//10是一個代碼

重載onActivityResult方法，用來接收傳過來的數據:

 protected void onActivityResult(int requestCode, int resultCode,Intent intent) {
   switch (resultCode) {
   case RESULT_OK:
      Bundle b = intent.getExtras();
      String str = b.getString("Result");
      setTitle("Return data:" + str);
       break;
  default:
        break;
  }
  }

接收數據的Activity:

  Intent   intent        = getIntent();
  Bundle getBundle = getIntent().getExtras();
  String   data          = getBundle.getString("data");//讀取傳過來的數據
  et.setText(data);

  EditText edittext = (EditText) findViewById(R.id.text);
  Intent intent = new Intent();//實例化一個Intent用來傳過去，可以在Intent里存放數據。
  Bundle bundle = new Bundle();
  bundle.putString("Result",edittext.getText().toString());
  intent.putExtras(bundle);
  Activity02.this.setResult(RESULT_OK,intent);//把Intent(數據)傳過去，RESULT_OK是請求碼。
  finish();//結束當前的Activity。

2.http://xqjay19910131-yahoo-cn.iteye.com/blog/1280857

Activity傳遞一個或者多個對象

Activity之間傳遞對象,或者通過Bundle傳遞對象的兩種方式。

1:Serializable方式
  傳遞一個對象

2:Parcelable方式
  傳遞一個對象、傳遞多個對象(ArrayList<Object>)


方式一:Serializable

     傳遞類:
    

Java代碼  

1. public class CustomeClass implements Serializable{   
2.        
3.     /**  
4.      *   
5.      */  
6.     private static final long serialVersionUID = -7060210544600464481L;   
7.     private String name;   
8.     private String id;   
9.     private int age;   
10.     private String sex;   
11.        
12.     public String getName() {   
13.         return name;   
14.     }   
15.     public void setName(String name) {   
16.         this.name = name;   
17.     }   
18.     public String getId() {   
19.         return id;   
20.     }   
21.     public void setId(String id) {   
22.         this.id = id;   
23.     }   
24.     public int getAge() {   
25.         return age;   
26.     }   
27.     public void setAge(int age) {   
28.         this.age = age;   
29.     }   
30.     public String getSex() {   
31.         return sex;   
32.     }   
33.     public void setSex(String sex) {   
34.         this.sex = sex;   
35.     }   
36.   
37. }  

public class CustomeClass implements Serializable{
	
	/**
	 * 
	 */
	private static final long serialVersionUID = -7060210544600464481L;
	private String name;
	private String id;
	private int age;
	private String sex;
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}

}

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Java代碼  

1. CustomeClass cc = new CustomeClass();   
2. cc.setAge(21);   
3. cc.setId("123456");   
4. cc.setName("mingkg21");   
5. cc.setSex("男");   
6.   
7. Intent intent = new Intent(this, PersonInfo.class);   
8. intent.putExtra("PERSON_INFO", cc);   
9. startActivity(intent);  

        CustomeClass cc = new CustomeClass();
        cc.setAge(21);
        cc.setId("123456");
        cc.setName("mingkg21");
        cc.setSex("男");
        
        Intent intent = new Intent(this, PersonInfo.class);
        intent.putExtra("PERSON_INFO", cc);
        startActivity(intent);

       
       接收部分:
      

Java代碼  

1.        Intent intent = getIntent();   
2. CustomeClass cc = CustomeClass)intent.getSerializableExtra("PERSON_INFO");   
3. setTextView(R.id.id, cc.getId());   
4. setTextView(R.id.name, cc.getName());   
5. setTextView(R.id.sex, cc.getSex());   
6. setTextView(R.id.age, String.valueOf(cc.getAge()));  

        Intent intent = getIntent();
	CustomeClass cc = CustomeClass)intent.getSerializableExtra("PERSON_INFO");
	setTextView(R.id.id, cc.getId());
	setTextView(R.id.name, cc.getName());
	setTextView(R.id.sex, cc.getSex());
	setTextView(R.id.age, String.valueOf(cc.getAge()));

方式二:Parcelable

     傳遞類:
    

Java代碼  

1. public class CustomeParcelable implements Parcelable {   
2.        
3.     private String name;   
4.     private String id;   
5.     private int age;   
6.     private String sex;   
7.   
8.     public String getName() {   
9.         return name;   
10.     }   
11.   
12.     public void setName(String name) {   
13.         this.name = name;   
14.     }   
15.   
16.     public String getId() {   
17.         return id;   
18.     }   
19.   
20.     public void setId(String id) {   
21.         this.id = id;   
22.     }   
23.   
24.     public int getAge() {   
25.         return age;   
26.     }   
27.   
28.     public void setAge(int age) {   
29.         this.age = age;   
30.     }   
31.   
32.     public String getSex() {   
33.         return sex;   
34.     }   
35.   
36.     public void setSex(String sex) {   
37.         this.sex = sex;   
38.     }   
39.        
40.     public static final Parcelable.Creator<CustomeParcelable> CREATOR = new Creator<CustomeParcelable>(){   
41.   
42.         public CustomeParcelable createFromParcel(Parcel source) {   
43.             // TODO Auto-generated method stub   
44.             CustomeParcelable cus = new CustomeParcelable();   
45.             cus.name = source.readString();   
46.             cus.id = source.readString();   
47.             cus.age = source.readInt();   
48.             cus.sex = source.readString();   
49.             return cus;   
50.         }   
51.   
52.         public CustomeParcelable[] newArray(int size) {   
53.             // TODO Auto-generated method stub   
54.             return new CustomeParcelable[size];   
55.         }   
56.            
57.     };   
58.   
59.     public int describeContents() {   
60.         // TODO Auto-generated method stub   
61.         return 0;   
62.     }   
63.   
64.     public void writeToParcel(Parcel dest, int flags) {   
65.         // TODO Auto-generated method stub   
66.         dest.writeString(name);   
67.         dest.writeString(id);   
68.         dest.writeInt(age);   
69.         dest.writeString(sex);   
70.     }   
71.   
72. }  

public class CustomeParcelable implements Parcelable {
	
	private String name;
	private String id;
	private int age;
	private String sex;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getSex() {
		return sex;
	}

	public void setSex(String sex) {
		this.sex = sex;
	}
	
	public static final Parcelable.Creator<CustomeParcelable> CREATOR = new Creator<CustomeParcelable>(){

		public CustomeParcelable createFromParcel(Parcel source) {
			// TODO Auto-generated method stub
			CustomeParcelable cus = new CustomeParcelable();
			cus.name = source.readString();
			cus.id = source.readString();
			cus.age = source.readInt();
			cus.sex = source.readString();
			return cus;
		}

		public CustomeParcelable[] newArray(int size) {
			// TODO Auto-generated method stub
			return new CustomeParcelable[size];
		}
		
	};

	public int describeContents() {
		// TODO Auto-generated method stub
		return 0;
	}

	public void writeToParcel(Parcel dest, int flags) {
		// TODO Auto-generated method stub
		dest.writeString(name);
		dest.writeString(id);
		dest.writeInt(age);
		dest.writeString(sex);
	}

}

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Java代碼  

1. CustomeParcelable cc = new CustomeParcelable();   
2. cc.setAge(21);   
3. cc.setId("123456");   
4. cc.setName("mingkg21");   
5. cc.setSex("男");   
6.            
7. Intent intent = new Intent(this, PersonInfo.class);   
8. intent.putExtra("PERSON_INFO", cc);   
9. startActivity(intent);  

CustomeParcelable cc = new CustomeParcelable();
cc.setAge(21);
cc.setId("123456");
cc.setName("mingkg21");
cc.setSex("男");
        
Intent intent = new Intent(this, PersonInfo.class);
intent.putExtra("PERSON_INFO", cc);
startActivity(intent);

        接受部分:
       

Java代碼  

1. Intent intent = getIntent();   
2. CustomeParcelable cc = intent.getParcelableExtra("PERSON_INFO");   
3. setTextView(R.id.id, cc.getId());   
4. setTextView(R.id.name, cc.getName());   
5. setTextView(R.id.sex, cc.getSex());   
6. setTextView(R.id.age, String.valueOf(cc.getAge()));  

Intent intent = getIntent();
CustomeParcelable cc = intent.getParcelableExtra("PERSON_INFO");
setTextView(R.id.id, cc.getId());
setTextView(R.id.name, cc.getName());
setTextView(R.id.sex, cc.getSex());
setTextView(R.id.age, String.valueOf(cc.getAge()));

以上為Parcelable傳遞一個對象,若要實現傳遞多個對象,
傳遞部分:
 

Java代碼  

1. Bundle bundle = new Bundle();   
2.         bundle.putParcelableArrayList("mP3TagForNetDTOs",mP3TagForNetDTOs);   
3.         msg.setData(bundle);   
4.         endDocNotice.sendMessage(msg);  

Bundle bundle = new Bundle();
		bundle.putParcelableArrayList("mP3TagForNetDTOs",mP3TagForNetDTOs);
		msg.setData(bundle);
		endDocNotice.sendMessage(msg);

接受部分: