(Android Learning series) Three, common events for Windows

Set the window caption event and jump between activity

Create a new project, create a new two activity:mainactivity,titleactivity, and then register it in Anroidmanifest.xml titleactivity

Androidmanifest.xml content is as follows

<?XML version= "1.0" encoding= "Utf-8"?><Manifestxmlns:android= "Http://schemas.android.com/apk/res/android" Package= "COM.NEIL.AD02">    <ApplicationAndroid:allowbackup= "true"Android:icon= "@mipmap/ic_launcher"Android:label= "@string/app_name"Android:supportsrtl= "true"Android:theme= "@style/apptheme">        <ActivityAndroid:name=". Mainactivity ">            <Intent-filter>                <ActionAndroid:name= "Android.intent.action.MAIN" />                <categoryAndroid:name= "Android.intent.category.LAUNCHER" />            </Intent-filter>        </Activity>        <ActivityAndroid:name=". Titleactivity "Android:label= "@string/app_name">        </Activity>    </Application></Manifest>

In the OnCreate method in Mainactivity

@Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.activity_main); LOG.D ("OnCreate", "OnCreate Method is executed"); Button BT=(Button) Findviewbyid (r.id.btturntitle); Bt.setonclicklistener (NewView.onclicklistener () { Public voidOnClick (View v) {startactivity (NewIntent (mainactivity. This, Titleactivity.class));    }        }); }

Click button to trigger Titleactivity OnCreate ()->onstart ()->onresume () method

Add a button to Activity_title.xml and click the button to change the value of App_name

Code in the Titleactivity

1  Packagecom.neil.ad02;2 3 Importandroid.app.Activity;4 ImportAndroid.os.Bundle;5 ImportAndroid.util.Log;6 ImportAndroid.view.View;7 ImportAndroid.widget.Button;8 9 /**Ten * Created by Neil on 2016/4/30. One  */ A  Public classTitleactivityextendsactivity{ -  -  the @Override -     protected voidonCreate (Bundle savedinstancestate) { -         Super. OnCreate (savedinstancestate); - Setcontentview (r.layout.activity_title); +Button bt=(Button) Findviewbyid (r.id.bttitle); -Bt.setonclicklistener ((View.onclicklistener) This); +Settitle ("window caption"); A     } at  -      Public voidonclick_settitle (view view) -     { -Settitle ("new window title"); -Settitlecolor (12345); -     } in  -     //call this method after the window has completely started to @Override +     protected voidonpostcreate (Bundle savedinstancestate) { -LOG.D ("Titleactivity", "Onpostcreate"); the         Super. Onpostcreate (savedinstancestate); *     } $ Panax Notoginseng  - @Override the     protected voidOntitlechanged (charsequence title,intcolor) +     { A         Super. ontitlechanged (Title,color); theLOG.D ("Titleactivity", "ontitlechanged_title" +title); +LOG.D ("Titleactivity", "Ontitlechanged_color" +color); -     } $  $}

It's easier than that.

(Android Learning series) Three, common events for Windows