The life cycle of Android activities

Life Cycle Pictures:

650) this.width=650; "src=" http://img.blog.csdn.net/20141127100106218 "/>

To test the main page layout:

: Layout/activity_main.xml

<relativelayout xmlns:android= "http://schemas.android.com/ Apk/res/android "
    xmlns:tools=" Http://schemas.android.com/tools "
    Android:layout_ Width= "Match_parent"
    android:layout_height= "match_parent"
    android:paddingbottom= "@dimen/activity_vertical_margin"
    android:paddingleft= "@dimen/activity_horizontal_margin"
    android:paddingright= "@dimen/activity_horizontal_margin"
    android:paddingtop= "@dimen /activity_vertical_margin "
    tools:context=". Mainactivity


    <button
        android:id= "@+id/button"
        android:layout_width= "match_parent"
        android:layout_height= " Wrap_content "
        android:text=" Start secondactivity "/>


</relativelayout

To test the main page Java code:

Package com.sxt.day04_03;


Import android.app.Activity;
Import android.content.Intent;
Import Android.os.Bundle;
Import Android.util.Log;
Import Android.view.View;
Import Android.view.View.OnClickListener;


public class Mainactivity extends Activity {


@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.activity_main);
LOG.I ("main", "OnCreate ()");
Setlistener ();
}


private void Setlistener () {
Findviewbyid (R.id.button). Setonclicklistener (New Onclicklistener () {
@Override
public void OnClick (View v) {
Intent intent=new Intent (Mainactivity.this, Secondactivity.class);
StartActivity (Intent);
}
});
}


@Override
protected void OnStart () {
Super.onstart ();
LOG.I ("main", "OnStart ()");
}

@Override
protected void Onresume () {
Super.onresume ();
LOG.I ("main", "Onresume ()");
}

@Override
protected void OnPause () {
Super.onpause ();
LOG.I ("main", "OnPause ()");
}

@Override
protected void OnStop () {
Super.onstop ();
LOG.I ("main", "OnStop ()");
}

@Override
protected void OnDestroy () {
Super.ondestroy ();
LOG.I ("main", "OnDestroy ()");
}

@Override
protected void Onrestart () {
Super.onrestart ();
LOG.I ("main", "Onrestatr ()");
}
}

Second second page layout:

: Layout/activity_second.xml

<relativelayout xmlns:android= "http://schemas.android.com/apk /res/android "
    xmlns:tools=" Http://schemas.android.com/tools "
    Android:layout_ Width= "Match_parent"
    android:layout_height= "match_parent"
    android:paddingbottom= "@dimen/activity_vertical_margin"
    android:paddingleft= "@dimen/activity_horizontal_margin"
    android:paddingright= "@dimen/activity_horizontal_margin"
    android:paddingtop= "@dimen /activity_vertical_margin "
    tools:context=". Secondactivity


    <textview
        android:layout_width= "Wrap_ Content "
        android:layout_height=" wrap_content "
        Android: text= "@string/hello_world"/>


</relativelayout>

Second secondary page Java code:

Package com.sxt.day04_03;


Import android.app.Activity;
Import Android.os.Bundle;


public class Secondactivity extends Activity {


@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.activity_second);
}


}

Effect:

650) this.width=650; "src=" http://img.blog.csdn.net/20141127100810506 "/>

650) this.width=650; "src=" http://img.blog.csdn.net/20141127100832596 "/>

This article from "Follow the heart of the other side" blog, declined reprint!

The life cycle of Android activities