Bundles Exchange data between activity

Data exchange between activity has a "messenger": Intent, so the main is to put the exchange of data into the Intent can

Intent provides multiple overloaded methods that "carry" additional data :

Put bundle data:

Putextras (Bundle data), put a "carry" packet into the intent

Bundle Getextras (); Take out the packets that intent "carry"

put key value data: (The source layer is actually the bundle used)

PutExtra (String name,xxx value), put data in key-value form, Xxx is any type

Getxxxextra (String name); Remove data of the specified type by key value

Bundle is a simple data carrying packet , bundle method:

Put the basic type:

Putxxx (String key,xxx data); Add various types of data such as Int,long to the bundle

GetXxx (String key); Remove various types of data such as Int,long

put object :

Putseralizable (String key,seralizable data); Put in a serializable object

Getseralizable (String key,seralizable data); Take out a serializable object

In general, the first activity:
* Bundle put data by:
* PUTXXX (String key,xxx value); you want to put a simple data type such as Int,long in a bundle
* Putserializable (String key,serializable data), which can be used to put serializable objects in bundles, mainly for objects
* Intent put bundles by:
* Putextras (Bundle data): Put a packet in the intent that needs to be "carried"

In the activity that was started:
* Intent Fetch data:
* Bundle Getextras (); Remove intent "carry" packet
* Getxxxextras (String key), extract the data of the specified type from the intent by key, and take the data in the bundle in a portable way

Process the registration information with the second activity:

Activity_main.xml

<?xml version= "1.0" encoding= "Utf-8"? ><tablelayout xmlns:android= "http://schemas.android.com/apk/res/ Android "Android:layout_width=" Fill_parent "android:layout_height=" Fill_parent "> <textview android: Id= "@+id/textview1" android:layout_width= "wrap_content" android:layout_height= "Wrap_content" Android: text= "Please enter your registration information" android:textsize= "20DP"/> <tablerow android:id= "@+id/tablerow1" Android:la Yout_width= "Wrap_content" android:layout_height= "wrap_content" > <textview android:id= "@+id /textview2 "android:layout_width=" wrap_content "android:layout_height=" Wrap_content "Android oid:text= "Account:" android:textsize= "20DP"/> <edittext android:id= "@+id/name" a            Ndroid:layout_width= "Wrap_content" android:layout_height= "wrap_content" android:ems= "10" Android:hint= "Please enter your account" AndroidOid:selectallonfocus= "true" > </EditText> </TableRow> <tablerow android:id= "@+id/tab            LeRow2 "android:layout_width=" wrap_content "android:layout_height=" wrap_content "> <textview Android:id= "@+id/textview3" android:layout_width= "wrap_content" android:layout_height= "wrap _content "android:text=" Password: "android:textsize=" 20DP "/> <edittext android:id            = "@+id/password" android:layout_width= "wrap_content" android:layout_height= "Wrap_content"    android:ems= "android:hint=" Please enter the password "android:inputtype=" Textpassword "/> </TableRow> <tablerow android:id= "@+id/tablerow3" android:layout_width= "Wrap_content" android:layout_height= "Wrap_content" > <textview android:id= "@+id/textview4" android:layout_width= "Wrap_conte NT "Android:layout_height= "Wrap_content" android:text= "Gender:" android:textsize= "20DP"/> <radiogroup Android:id= "@+id/radiogroup1" android:layout_width= "Wrap_content" android:layout_height= "W Rap_content "android:orientation=" horizontal "> <radiobutton android:id=" @+id/r                Adio0 "android:layout_width=" wrap_content "android:layout_height=" Wrap_content " Android:checked= "true" android:text= "male"/> <radiobutton android:id= "@+id                /radio1 "android:layout_width=" wrap_content "android:layout_height=" Wrap_content "         android:text= "Women"/> </RadioGroup> </TableRow> <button android:id= "@+id/button1" Android:layout_width= "Wrap_content" android:layout_height= "wrap_content" android:text= "register"/>< /tablelayout>

Mainactivity.java

Package Com.hust.bundletest;import Android.app.activity;import Android.content.intent;import android.os.Bundle; Import Android.view.menu;import Android.view.menuitem;import Android.view.view;import Android.view.view.onclicklistener;import Android.widget.button;import Android.widget.edittext;import android.widget.radiobutton;/* the registration information with a second activity. * Data exchange between activity is done with intent Messenger.       Intent provides a number of overloaded methods to carry extra data: * 1, bundle data with bundle object, intent carry Bundle Object * Putextras (bundle data): Put a packet that needs "carry" into the intent * Bundle Getextras (); Remove intent "carry" packet * 2, for a simple data type, you can use a portable method of direct storage, take intent to carry the bundle object, source can be found in the first created bundle object * PutExtra S (string key,xxx value); Intent the key value pair (Key-value) in the form of data * Getxxxextras (string key); Extract data of the specified type from intent by key * *//* * Bun Dle is a simple data carrying package that contains several methods: * 1, put in a simple data type * PUTXXX (String key,xxx value), and a simple data type such as Int,long in the bundle, GETXXX ( String key); Take out Int,long simple data type * *, put in serializable object, implement Seriliable interface Object * putserializable (String key,serializable data); You want to put a serializable pair in the bundleLike * getserializable (string key); Take out the Serializable object * General first activity: * Bundle put data by: * PUTXXX (string key,xxx value); think B. A simple data type such as Int,long (String key,serializable data) is placed in the Undle, and a serializable object is placed in the bundle, which is mainly used for placing objects * intent put bundles : * Putextras (Bundle data): Into the intent to put the packet that needs to "carry" * is activated activity: * Intent Fetch DATA: * Bundle Getextras (); Remove in  Tent "carry" Packet * Getxxxextras (String key); Extracts the data of the specified type from the intent by key, and takes the data in the bundle in a portable manner * */public class Mainactivity extends Activity {@Override protected void onCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate)        ;        Setcontentview (R.layout.activity_main);                  Button btn= (button) Findviewbyid (R.id.button1); Btn.setonclicklistener (New Onclicklistener () {@Overridepublic void OnClick (View v) {//TODO auto-generated method stub//        Three components obtained EditText name= (EditText) Findviewbyid (r.id.name);        EditText password= (EditText) Findviewbyid (R.id.password); RadioButton male= (RadIobutton) Findviewbyid (r.id.radio0); Determine if String sex= (male.ischecked ()) is selected? "        Male ":" Female "; Encapsulates an object person p=new person (name.gettext (). ToString (), Password.gettext (). ToString (), sex);//Create Bundle Object Bundle Bund Le=new Bundle (); Bundle.putserializable ("person", p);//Create a Intent Object Intent intent=new intent (mainactivity.this,                Resultactivity.class); Intent.putextras (bundle);//start Intent corresponding activitystartactivity (intent);}            }); } @Override Public boolean Oncreateoptionsmenu (Menu menu) {//Inflate the menu, this adds items to the Actio        n Bar if it is present.        Getmenuinflater (). Inflate (R.menu.main, menu);    return true; } @Override public boolean onoptionsitemselected (MenuItem Item) {//Handle Action Bar item clicks here.  The action bar would//automatically handle clicks on the Home/up button, so long/As you specify a parent        Activity in Androidmanifest.xml.        int id = item.getitemid (); if (iD = = r.id.action_settings) {return true;    } return super.onoptionsitemselected (item); }}

Person.java

Package Com.hust.bundletest;import Java.io.serializable;public class Person implements Serializable {    String name;    String password;    String Sex;public Person (string name, string password, string sex) {super (); this.name = Name;this.password = Password;this . sex = sex;} Public String GetName () {return name;} public void SetName (String name) {this.name = name;} Public String GetPassword () {return password;} public void SetPassword (String password) {this.password = password;} Public String Getsex () {return sex;} public void Setsex (String sex) {this.sex = sex;}    }

Resultactivity.java

Package Com.hust.bundletest;import Android.app.activity;import Android.content.intent;import android.os.Bundle; Import Android.view.menu;import Android.view.menuitem;import Android.widget.textview;public class ResultActivity Extends Activity {@Overrideprotected void onCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layout.activity_result);//Get Display Components TextView name= (TextView) Findviewbyid (R.ID.TEXT1); TextView password= (TextView) Findviewbyid (R.ID.TEXT2); TextView sex= (TextView) Findviewbyid (R.ID.TEXT3);//Get Intent Object Intent intent=getintent ();//Get sequence data from intent object//person p= (person) Intent.getserializableextra ("person"), equivalent to bundle Bundle=intent.getextras ();//Get Bundle Object Person p= (person Bundle.getserializable ("person"); Gets the serializable object in the//bundle object Name.settext (P.getname ());p Assword.settext (P.getpassword ( )); Sex.settext (P.getsex ());} @Overridepublic boolean Oncreateoptionsmenu (Menu menu) {//Inflate the menu; This adds items to the action bar if it is PR Esent.getmenuinflater(). Inflate (R.menu.result, menu); return true;} @Overridepublic boolean onoptionsitemselected (MenuItem Item) {//Handle Action Bar item clicks here. The action bar will//automatically handle clicks on the Home/up button so long//as you specify a parent activity in and RoidManifest.xml.int id = item.getitemid (); if (id = = r.id.action_settings) {return true;} return super.onoptionsitemselected (item);}}

Bundles Exchange data between activity