【移動應(yīng)用開發(fā)技術(shù)】Android在layout xml中如何使用ViewStub完成動態(tài)加載

【移動應(yīng)用開發(fā)技術(shù)】Android在layoutxml中如何使用ViewStub完成動態(tài)加載

一、LayoutXML文件常見的兩種模塊加載方式<include

layout="@layout/otherLayout"/><ViewStub

android:layout="@layout/otherLayout"/>二、ViewStup完成動態(tài)加載/upload/information/20200623/125/126770.png/upload/information/20200623/125/126771.png/upload/information/20200623/125/126772.png三、ViewStub詳細(xì)介紹下面來看一個實(shí)例<?xml

version="1.0"

encoding="utf-8"?>

<LinearLayout

xmlns:android="/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:gravity="center_horizontal">

<ViewStub

android:id="@+id/viewstub_demo_text"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="5dip"

android:layout_marginRight="5dip"

android:layout_marginTop="10dip"

android:layout="@layout/viewstub_demo_text_layout"/>

<ViewStub

android:id="@+id/viewstub_demo_image"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_marginLeft="5dip"

android:layout_marginRight="5dip"

android:layout="@layout/viewstub_demo_image_layout"/

</LinearLayout><?xml

version="1.0"

encoding="utf-8"?>

<LinearLayout

xmlns:android="/apk/res/android"

android:orientation="vertical"

android:layout_width="wrap_content"

android:layout_height="wrap_content">

<TextView

android:id="@+id/viewstub_demo_textview"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:background="#aa664411"

android:textSize="16sp"/>

</LinearLayout><?xml

version="1.0"

encoding="utf-8"?>

<LinearLayout

xmlns:android="/apk/res/android"

android:orientation="vertical"

android:layout_width="wrap_content"

android:layout_height="wrap_content">

<ImageView

android:id="@+id/viewstub_demo_imageview"

android:layout_width="wrap_content"

android:layout_height="wrap_content"/>

</LinearLayout>package

com.effective;

import

android.app.Activity;

import

android.os.Bundle;

import

android.view.ViewStub;

import

android.widget.ImageView;

import

android.widget.TextView;

public

class

ViewStubDemoActivity

extends

Activity

{

@Override

public

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.viewstub_demo_activity);

if

((((int)

(Math.random()

*

100))

&

0x01)

==

0)

{

//

to

show

text

//

all

you

have

to

do

is

inflate

the

ViewStub

for

textview

ViewStub

stub

=

(ViewStub)

findViewById(R.id.viewstub_demo_text);

stub.inflate();

TextView

text

=

(TextView)

findViewById(R.id.viewstub_demo_textview);

text.setText("The

tree

of

liberty

must

be

refreshed

from

time

to

time"

+

"

with

the

blood

of

patroits

and

tyrants!

Freedom

is

nothing

but

"

+

"a

chance

to

be

better!");

}

else

{

//

to

show

image

//

all

you

have

to

do

is

inflate

the

ViewStub

for

imageview

ViewStub

stub

=

(ViewStub)

findViewById(R.id.viewstub_demo_image);

stub.inflate();

ImageView

image

=

(ImageView)

findViewById(R.id.viewstub_demo_imageview);

ima