7. Android框架和工具之 android-percent-support-lib-sample(百分比支持)

时间:2022-12-26 09:49:08

1. android-percent-support-lib-sample介绍:

谷歌最新的百分比布局库的示例项目。其实LinearLayout的layout_weight也能实现百分比效果,不过这个更直接。

android-percent-support-lib-sample项目地址:

https://github.com/JulienGenoud/android-percent-support-lib-sample

简单效果:

7. Android框架和工具之 android-percent-support-lib-sample(百分比支持)

 

 

复杂效果:

7. Android框架和工具之 android-percent-support-lib-sample(百分比支持)

 

2. 百分比库使用Demo:

这里的Eclipse版本库代码(包含示例代码),我已经完整提交到Github。地址如下:

https://github.com/PocketBoy/Local/tree/master/Eclipse_android_percent_support

(1)点击上面的链接,下载库代码,解压,导入Eclipse之中:

7. Android框架和工具之 android-percent-support-lib-sample(百分比支持)

(2)这里我们新建一个Android工程,命名位"PercentDemo",如下:

7. Android框架和工具之 android-percent-support-lib-sample(百分比支持)

上面库文件需要引用android-support-v4.jar

(3)来到上面自定义属性文件attrs.xml,如下:

<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="PercentLayout_Layout">
<attr name="layout_widthPercent" format="string"/>
<attr name="layout_heightPercent" format="string"/>
<attr name="layout_marginPercent" format="string"/>
<attr name="layout_marginLeftPercent" format="string"/>
<attr name="layout_marginTopPercent" format="string"/>
<attr name="layout_marginRightPercent" format="string"/>
<attr name="layout_marginBottomPercent" format="string"/>
<attr name="layout_marginStartPercent" format="string"/>
<attr name="layout_marginEndPercent" format="string"/>
<attr name="layout_textSizePercent" format="string"/>
<attr name="layout_maxWidthPercent" format="string"/>
<attr name="layout_maxHeightPercent" format="string"/>
<attr name="layout_minWidthPercent" format="string"/>
<attr name="layout_minHeightPercent" format="string"/>
</declare-styleable>
</resources>

 至于怎么使用自定义属性,请参照笔记:

自定义控件(视图)28期笔记06:自定义控件之 自定义属性

(4)来到activity_main.xml布局文件之中:

<?xml version="1.0" encoding="utf-8"?>
<android.support.percent.PercentLinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" > <android.support.percent.PercentLinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_heightPercent="33.3%"
android:orientation="horizontal" > <View android:id="@+id/view_11"
android:layout_width="0dp"
android:layout_height="match_parent"
app:layout_widthPercent="50%"
android:background="#ff44aacc" /> <View
android:id="@+id/view_12"
android:layout_width="0dp"
android:layout_height="match_parent"
app:layout_widthPercent="50%"
android:background="#664466cc" />
</android.support.percent.PercentLinearLayout> <android.support.percent.PercentLinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_heightPercent="33.3%"
android:orientation="horizontal" > <View android:id="@+id/view_21"
android:layout_width="0dp"
android:layout_height="match_parent"
app:layout_widthPercent="25%"
android:background="#ff44ffcc" /> <View
android:id="@+id/view_22"
android:layout_width="0dp"
android:layout_height="match_parent"
app:layout_widthPercent="25%"
android:background="#8585855c" /> <View android:id="@+id/view_23"
android:layout_width="0dp"
android:layout_height="match_parent"
app:layout_widthPercent="25%"
android:background="#ff444545" /> <View
android:id="@+id/view_24"
android:layout_width="0dp"
android:layout_height="match_parent"
app:layout_widthPercent="25%"
android:background="#556ff776" />
</android.support.percent.PercentLinearLayout> <android.support.percent.PercentLinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_heightPercent="33.3%"
android:orientation="horizontal" > <View android:id="@+id/view_31"
android:layout_width="0dp"
android:layout_height="match_parent"
app:layout_widthPercent="50%"
android:background="#ffffff00" /> <View
android:id="@+id/view_32"
android:layout_width="0dp"
android:layout_height="match_parent"
app:layout_widthPercent="50%"
android:background="#ffff00ff" />
</android.support.percent.PercentLinearLayout> </android.support.percent.PercentLinearLayout>

布局效果如下:

7. Android框架和工具之 android-percent-support-lib-sample(百分比支持)

(5)来到activity_main1.xml,如下:

<android.support.percent.PercentRelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white" > <View
android:id="@+id/top_left"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_alignParentTop="true"
app:layout_heightPercent="20%"
app:layout_widthPercent="70%"
android:background="#ff44aacc" /> <View
android:id="@+id/top_right"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_alignParentTop="true"
android:layout_toRightOf="@+id/top_left"
app:layout_heightPercent="20%"
app:layout_widthPercent="30%"
android:background="#ffe40000" /> <android.support.percent.PercentFrameLayout
android:id="@+id/bottom"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_below="@+id/top_left"
android:layout_gravity="center"
app:layout_heightPercent="80%"
android:background="#ff00ff22" > <android.support.percent.PercentLinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
app:layout_heightPercent="100%"
app:layout_marginTopPercent="10%"
android:background="@android:color/white"
android:orientation="vertical"
>
<View
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_heightPercent="30%"
app:layout_widthPercent="10%"
android:background="#ff44ccdd" />
<View
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_heightPercent="30%"
app:layout_widthPercent="90%"
android:background="#ffe400dd" />
<TextView
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_heightPercent="20%"
app:layout_widthPercent="90%"
android:background="#ccc"
android:text="margin 15% of w"
app:layout_marginPercent="5%h"
/>
</android.support.percent.PercentLinearLayout>
</android.support.percent.PercentFrameLayout> </android.support.percent.PercentRelativeLayout>

布局效果如下:

7. Android框架和工具之 android-percent-support-lib-sample(百分比支持)

(6)activity_main2.xml,如下:

<?xml version="1.0" encoding="utf-8"?>
<android.support.percent.PercentFrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"> <android.support.percent.PercentFrameLayout
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_gravity="center"
android:background="#ff44aacc"
app:layout_heightPercent="50%w"
app:layout_widthPercent="50%w"> <android.support.percent.PercentFrameLayout
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_gravity="center"
android:background="#ffcc5ec7"
app:layout_heightPercent="50%w"
app:layout_widthPercent="50%w"> <TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:background="#ff7ecc16"
android:gravity="center"
android:text="margin 15% of w"
app:layout_marginPercent="15%w"
/> </android.support.percent.PercentFrameLayout> </android.support.percent.PercentFrameLayout> <TextView android:layout_width="0dp"
android:layout_height="0dp"
android:layout_gravity="bottom|right"
android:background="#44ff0000"
android:gravity="center"
android:text="15%w,15%w"
app:layout_heightPercent="15%w"
app:layout_marginPercent="5%w"
app:layout_widthPercent="15%w"/> </android.support.percent.PercentFrameLayout>

布局效果如下:

7. Android框架和工具之 android-percent-support-lib-sample(百分比支持)