Android's first knowledge of intent

First modify the Values\strings.xml file

The code is as follows:

<resources>    <string name= "app_name" >mytab</string>        <string name= "Menu_settings" > settings</string>    <string name= "app_title" >intent operation </string><string name= "Send_name" > Send Intent Activity program. </string><string name= "Receive_name" > Receive Intent Activity Program .</string> </resources>

Then define the Send_main.xml file

The code is as follows:

<?xml version= "1.0" encoding= "Utf-8"? ><linearlayout xmlns:android= "http://schemas.android.com/apk/res/ Android "    xmlns:tools=" Http://schemas.android.com/tools "    android:id=" @+id/mylayout "    android:layout_ Width= "Fill_parent"    android:layout_height= "fill_parent"    tools:context= ". Mainactivity "><button     android:id=" @+id/mybut "    android:layout_width=" Wrap_content "    android: layout_height= "Wrap_content"    android:text= "Press to jump to another activity program"/></linearlayout>

The corresponding definition Send.java class

The code is as follows:

Package Com.example.mytab;import Android.app.activity;import Android.content.intent;import android.os.Bundle; Import Android.view.view;import Android.view.view.onclicklistener;import Android.widget.button;public class Send Extends Activity  {private Button mybut = null;    @Override public    void OnCreate (Bundle savedinstancestate) {        super.oncreate (savedinstancestate);        Setcontentview (r.layout.send_main);        This.mybut = (Button) Super.findviewbyid (r.id.mybut);        This.mybut.setOnClickListener (New Onclicklistenerlmpl ());    }    public class Onclicklistenerlmpl implements onclicklistener{public    void OnClick (view view) {    Intent it = new Int ENT (send.this,receive.class);    It.putextra ("MyInfo", "Hi, Friend");    Send.this.startActivity (it);}}}    

For receive, there is a corresponding definition

First Receive_main.xml file

The code is as follows:

<?xml version= "1.0" encoding= "Utf-8"? ><linearlayout xmlns:android= "http://schemas.android.com/apk/res/ Android "    android:id=" @+id/mylayout "    android:layout_width=" fill_parent "    android:layout_height=" fill _parent "    android:orientation=" vertical ">    <textview         android:id=" @+id/show "        android:layout _width= "Wrap_content"        android:layout_height= "Wrap_content"/></linearlayout>

Then define the Receive.java class

The code is as follows:

Package Com.example.mytab;import Android.app.activity;import Android.content.intent;import android.os.Bundle; Import Android.widget.textview;public class Receive extends activity{private TextView show = null; @Overridepublic void on Create (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Super.setcontentview (R.layout.receive_main ); this.show = (TextView) Super.findviewbyid (r.id.show); Intent it = super.getintent (); String info = It.getstringextra ("MyInfo"); This.show.setText (info);}}

Finally need to modify the corresponding Mainifest.xml file, add new activity Program

The code is as follows:

<manifest xmlns:android= "http://schemas.android.com/apk/res/android"    package= "Com.example.mytab    " Android:versioncode= "1"    android:versionname= "1.0" >    <uses-sdk        android:minsdkversion= "        android:targetsdkversion= "/>    <application        android:icon=" @drawable/ic_launcher "        android: Label= "@string/app_name"        android:theme= "@style/apptheme" >        <activity            android:name= "Send"            android:label= "@string/send_name" >            <intent-filter>                <action android:name= " Android.intent.action.MAIN "/>                <category android:name=" Android.intent.category.LAUNCHER "/>            </intent-filter>        </activity>        <activity             android:name= "Receive"            Android:label = "@string/receive_name"/>    </application></manifest>

Operating effect:

Click to jump to another activity class and pass the message

Android's first knowledge of intent