Android uses bundle to transmit messages between activities

Message transmission between activities. Bundle is a convenient method.

ProgramThe effect is that activity a redirects to B and sends a string while Activity B reads the string.

Define a new activity in androidmanifest. XML, target:

XML Code

<? XML version = "1.0" encoding = "UTF-8"?>

<Manifest xmlns: Android = "http://schemas.android.com/apk/res/android"

Package = "com. Ray. test"

Android: versioncode = "1"

Android: versionname = "1.0" type = "codeph" text = "/codeph">

<Application Android: icon = "@ drawable/icon" Android: Label = "@ string/app_name">

<Activity Android: Name = ". testbundle"

Android: Label = "@ string/app_name">

<Intent-filter>

<Action Android: Name = "android. Intent. Action. Main"/>

<Category Android: Name = "android. Intent. Category. launcher"/>

</Intent-filter>

</Activity>



<Activity Android: Name = ". Target"> </activity>

</Application>

<Uses-SDK Android: minsdkversion = "3"/>

</Manifest>

<? XML version = "1.0" encoding = "UTF-8"?>

<Manifest xmlns: Android = "http://schemas.android.com/apk/res/android"

Package = "com. Ray. test"

Android: versioncode = "1"

Android: versionname = "1.0" type = "codeph" text = "/codeph">

<Application Android: icon = "@ drawable/icon" Android: Label = "@ string/app_name">

<Activity Android: Name = ". testbundle"

Android: Label = "@ string/app_name">

<Intent-filter>

<Action Android: Name = "android. Intent. Action. Main"/>

<Category Android: Name = "android. Intent. Category. launcher"/>

</Intent-filter>

</Activity>



<Activity Android: Name = ". Target"> </activity>

</Application>

<Uses-SDK Android: minsdkversion = "3"/>

</Manifest>

The code for the first activity is as follows:

Java code

Package com. Ray. test;



Import Android. App. activity;

Import Android. content. intent;

Import Android. OS. Bundle;

Import Android. View. motionevent;



Public class testbundle extends activity {

Public void oncreate (bundle savedinstancestate ){

Super. oncreate (savedinstancestate );

Setcontentview (R. layout. Main );

}



Public Boolean ontouchevent (motionevent event ){

Intent intent = new intent ();

Intent. setclass (testbundle. This, target. Class );

Bundle mbundle = new bundle ();

Mbundle. putstring ("data", "Ray 'blog"); // press data

Intent. putextras (mbundle );

Startactivity (intent );

Finish ();

Return super. ontouchevent (event );

}
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}

Package com. Ray. test;

Import Android. App. activity;

Import Android. content. intent;

Import Android. OS. Bundle;

Import Android. View. motionevent;

public class testbundle extends activity {
Public void oncreate (bundle savedinstancestate) {
super. oncreate (savedinstancestate);
setcontentview (R. layout. main);

}< br>
Public Boolean ontouchevent (motionevent event) {
intent = new intent ();
intent. setclass (testbundle. this, target. class);
bundle mbundle = new bundle ();
mbundle. putstring ("data", "Ray 'blog"); // press data
intent. putextras (mbundle);
startactivity (intent);
finish ();
return Super. ontouchevent (event);

}

activity code to jump to:
JAVA code
package COM. ray. test;
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Import android. app. activity;
Import android. OS. bundle;
public class target extends activity {
Public void oncreate (bundle savedinstancestate) {
super. oncreate (savedinstancestate);
setcontentview (R. layout. main);
bundle = getintent (). getextras ();
string data = bundle. getstring ("data"); // read data
settitle (data);

}