时隔四年,在网易换肤之前的思路下,做了几点改进,现在完全通过反射创建View,并且在
SkinLoadManager
中提供一个configCustomAttrs
以支持自定义View的属性插队替换
摈弃了之前的
AsyncTask
,使用kotlin 协程进行主题包的资源转换
使用kotlin重构所有Java代码实现
默认主题
点击切换主题
STEP 1 宿主项目(示例Demo为本项目
app
模块)依赖多主题框架AAR
//in root build.gradle
allprojects {
repositories {
maven { url 'https://jitpack.io' }
}
}
// in app/module build.gradle
dependencies {
implementation 'com.github.mistletoe5215:MagicMistletoe:1.0.0'
}
STEP 2 制作多主题包
找个壳工程(本Demo为
theme-pkg
模块),在res下放置资源文件,注意
资源文件名称需要与宿主app
内的资源文件名称保持一致,这样主题切换的时候才可以成功替换
执行打包命令
找到生成的资源apk
重命名为
你喜欢的名字.zip
(如果有强迫症)
这里是做演示,(实际商用过程中,可将zip包给服务端,进行主题包签名处理,后通过下载的形式down到本地,解签,应用)拷贝主题文件至
宿主app
的assets目录下
释放assets目录主题文件至私有路径
private fun copyAssetAndWrite(fileName: String): Boolean {
try {
val cacheDir = cacheDir
if (!cacheDir.exists()) {
cacheDir.mkdirs()
}
val outFile = File(cacheDir, fileName)
if (!outFile.exists()) {
val res = outFile.createNewFile()
if (!res) {
return false
}
} else {
if (outFile.length() > 10) {
return true
}
}
val `is`: InputStream = assets.open(fileName)
val fos = FileOutputStream(outFile)
val buffer = ByteArray(1024)
var byteCount: Int
while (`is`.read(buffer).also { byteCount = it } != -1) {
fos.write(buffer, 0, byteCount)
}
fos.flush()
`is`.close()
fos.close()
return true
} catch (e: IOException) {
e.printStackTrace()
}
return false
}
STEP 3 XML中需要更换主题的控件设置好多主题属性
multiTheme:enable="true"
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
xmlns:multiTheme="http://schemas.android.com/apk/multi.theme"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/main_bg"
multiTheme:enable="true"
tools:context=".MainActivity">
<com.google.android.material.imageview.ShapeableImageView
android:src="@drawable/ic_avatar"
android:layout_marginTop="20dp"
android:layout_width="220dp"
android:layout_height="220dp"
android:scaleType="centerCrop"
android:id="@+id/avatar"
android:background="@color/main_text"
multiTheme:enable="true"
app:shapeAppearance="@style/CircleStyle"
app:layout_constraintBottom_toTopOf="@+id/copy"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:background="@color/teal_200"
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="100dp"
android:gravity="center"
android:id="@+id/copy"
android:text="释放主题包到应用内存(切换前必点)"
android:textColor="@color/main_text"
multiTheme:enable="true"
app:layout_constraintBottom_toTopOf="@+id/change_skin"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/avatar" />
<TextView
android:background="@color/teal_200"
android:layout_marginTop="20dp"
android:layout_width="match_parent"
android:layout_height="100dp"
android:gravity="center"
android:id="@+id/change_skin"
android:text="切换主题"
android:textColor="@color/main_text"
multiTheme:enable="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/copy" />
</androidx.constraintlayout.widget.ConstraintLayout>
//获取多主题色值ID
SkinLoadManager.getInstance().getColor(attrValue)
//获取多主题图片ID
SkinLoadManager.getInstance().getDrawable(attrValue)
//获取多主题字符串ID
SkinLoadManager.getInstance().getTextString(attrValue)
STEP 4 代码执行切换
/**
* 在Application中初始化多主题框架
**/
SkinLoadManager.getInstance().init(application)
/**
* Activity onCreate 前设置`multiThemeFactory`
**/
registerActivityLifecycleCallbacks(object : ActivityLifecycleCallbacks {
override fun onActivityPreCreated(activity: Activity, savedInstanceState: Bundle?) {
super.onActivityPreCreated(activity, savedInstanceState)
activity.layoutInflater.factory = SkinLoadManager.getInstance().multiThemeFactory
}
override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {
}
override fun onActivityStarted(activity: Activity) {
}
override fun onActivityResumed(activity: Activity) {
}
override fun onActivityPaused(activity: Activity) {
}
override fun onActivityStopped(activity: Activity) {
}
override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) {
}
override fun onActivityDestroyed(activity: Activity) {
}
})
/**
* 换肤前,将换肤包从assets目录拷入应用内
**/
ArchTaskExecutor.getIOThreadExecutor().execute {
copyAssetAndWrite(fileName)
ArchTaskExecutor.getMainThreadExecutor().execute {
Toast.makeText(this,"成功",Toast.LENGTH_SHORT).show()
}
}
/**
* 传入拷贝后的多主题路径,执行多主题切换
**/
val dataFile = File(cacheDir, fileName)
SkinLoadManager.getInstance().loadSkin(dataFile.absolutePath, object : ILoadListener {
override fun onStart() {
Log.i("Mistletoe", "onStart")
}
override fun onSuccess() {
Log.i("Mistletoe", "onSuccess")
}
override fun onFailed(e: SkinLoadException) {
Log.e("Mistletoe", "onFailed:${e.message}")
}
})
/**
* 切换回App默认主题
**/
SkinLoadManager.getInstance().restoreDefaultTheme()
有时候我们想自定义一些主题切换属性实现,怎么办?使用
SkinLoadManager
的configCustomAttrs
比如,我们现在想在头像前面盖一个前景色,切换主题后,前景色也跟着切换,它的实现如下
- 新建前景色属性Attr类,继承
com.magic.multi.theme.core.base.BaseAttr
,实现其apply
方法
/**
* Created by mistletoe
* on 7/28/21
**/
class ImageForegroundAttr:BaseAttr() {
override fun apply(view: View?) {
when(view){
is AppCompatImageView ->{
if ("foreground".equals(attrName, true)) {
view.foreground = SkinLoadManager.getInstance().getDrawable(attrValue)
}
}
is ImageView ->{
if ("foreground".equals(attrName, true)) {
view.foreground = SkinLoadManager.getInstance().getDrawable(attrValue)
}
}
}
}
}
- 将
foreground
(注意,这个key不可以乱取,必须与xml
中前景属性的名字一致)与ImageForegroundAttr 分别作为key-value, 放入configCustomAttrs
中
//增加一个设置前景图片属性
val configMap = mutableMapOf<String,BaseAttr>().apply {
put("foreground",ImageForegroundAttr())
}
SkinLoadManager.getInstance().configCustomAttrs(configMap)
- 预先在宿主app和主题包中定义
image_foreground_modal
相同名称的前景drawable资源,宿主app前景色为#4DFFFFFF
(30%的灰白) ,皮肤包为#330000FF
(20%的淡蓝)
宿主app
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#4DFFFFFF" />
<corners android:radius="110dp" />
</shape>
主题包zip
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#330000FF" />
<corners android:radius="110dp" />
</shape>
- 在布局中声明使用
<com.google.android.material.imageview.ShapeableImageView
android:src="@drawable/ic_avatar"
android:layout_marginTop="20dp"
android:layout_width="220dp"
android:layout_height="220dp"
android:scaleType="centerCrop"
android:id="@+id/avatar"
android:background="@color/main_text"
android:foreground="@drawable/image_foreground_modal"
multiTheme:enable="true"
app:shapeAppearance="@style/CircleStyle"
app:layout_constraintBottom_toTopOf="@+id/copy"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
- 可以观察到
初始头像的前景色
切换主题后的前景色
这样一个前景色的自定义主题切换设置就完成了