[Reprint] Use bundle to transmit messages between Android activities

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

2. <?XML Version="1.0" Encoding="UTF-8"?>
4. <Manifest Xmlns: Android=Http://schemas.android.com/apk/res/android"
6. Package="Com. Ray. test"
8. Android: versioncode="1"
10. Android: versionname="1.0">
12. <Application Android: icon="@ Drawable/icon" Android: Label="@ String/app_name">
14. <Activity Android: Name=". Testbundle"
16. Android: Label="@ String/app_name">
18. <Intent-Filter>
20. <Action Android: Name="Android. Intent. Action. Main" />
22. <Category Android: Name="Android. Intent. Category. launcher" />
24. </Intent-Filter>
26. </Activity>
30. <Activity Android: Name=". Target"></Activity>
32. </Application>
34. <Uses-SDK Android: minsdkversion="3" />
36. 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 "> <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

2. PackageCom. Ray. test;
6. ImportAndroid. App. activity;
8. ImportAndroid. content. intent;
10. ImportAndroid. OS. Bundle;
12. ImportAndroid. View. motionevent;
16. Public ClassTestbundleExtendsActivity {
18. Public VoidOncreate (bundle savedinstancestate ){
20. Super. Oncreate (savedinstancestate );
22. Setcontentview (R. layout. Main );
24. }
28. Public BooleanOntouchevent (motionevent event ){
30. Intent intent =NewIntent ();
32. Intent. setclass (testbundle.This, Target.Class);
34. Bundle mbundle =NewBundle ();
36. Mbundle. putstring ("Data","Ray 'blog");// Press data
38. Intent. putextras (mbundle );
40. Startactivity (intent );
42. Finish ();
44. Return Super. Ontouchevent (event );
46. }
48. }

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 = new intent (); intent. setclass (testbundle. this, target. class); bundle mbundle = new bundle (); mbundle. putstring ("data", "Ray 'blog"); // press the data intent. putextras (mbundle); startactivity (intent); finish (); return Super. ontouchevent (event );}}
 

Activity Code to jump:

Java code

2. PackageCom. Ray. test;
6. ImportAndroid. App. activity;
8. ImportAndroid. OS. Bundle;
12. Public ClassTargetExtendsActivity {
16. Public VoidOncreate (bundle savedinstancestate ){
18. Super. Oncreate (savedinstancestate );
20. Setcontentview (R. layout. Main );
22. Bundle bundle = getintent (). getextras ();
24. String data = bundle. getstring ("Data");// Read data
26. Settitle (data );
28. }
30. }

If you want to return data/information from target to testbundle, you can:
Startactivityforresult (intent, 1333); // 1333 is the Request Code

Then in the target, when the return is:
Intent DATA = new data ();
Data. putextra ("MSG", "My message ");
Setresult (result_ OK, data );
Finish ();

Data/information returned from testbundle:
@ Override
Protected void onactivityresult (INT requestcode, int resultcode, intent data ){
String MSG = data. getextras. getstring ("MSG ");
//...
}