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This is an Android plugin, which can improve the performance of layout loading by parsing the layout xml file during the compilation period and converting the reflection instantiation in LayoutInflater into a normal instantiation.

Get Started

Dependencies

1. Open the setting.gradle file, and make sure that the repositories, gradlePluginPortal and mavenCentral, are configured.

pluginManagement {
    repositories {
        gradlePluginPortal()
        mavenLocal()
        // other repository
    }
}
dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        mavenCentral()
        mavenLocal()
        // other repository
    }
}

2. Open the build.gradle file of project, and add the FastInflate plugin in the plugins.

plugins {
    id 'com.dreamgyf.android.fastinflate' version '0.1.0-alpha-03' apply false
}

3. Open the build.gradle file of module, and add the FastInflate plugin in the plugins.

plugins {
    id 'com.dreamgyf.android.fastinflate'
}

4. Open the build.gradle file of module, and add the FastInflate library in the dependencies.

dependencies {
    implementation 'com.dreamgyf.android.fastinflate:0.1.0-alpha-03'
}

Usage

Just use FastInflate instead LayoutInflater.

// LayoutInflater.from(this).inflate(R.layout.activity_main, null)
FastInflate.from(this).inflate(R.layout.activity_main, null)

Notice

• If you want compile this project, please clone the parent project AndroidLibraries directly.

• Multi-module projects are not supported currently.

• Multi-directory of layout is not supported currently. (For Example: layout-v23)

• The <include /> tag doesn't supported to use theme attribute.

• The current version is an alpha beta, and have not done compatibility tests for all of the Android versions.

• The initialization of the current version of FastInflate is slow, this problem will be solved in subsequent versions.

Performance test

ps：The following test results are based on activity_main layout of this branch.

Pixel 6 pro, Android SDK 33

• Time consumption of first inflate layout（Unit: ms）

FastInflate	LayoutInflater
23ms	28ms
23ms	29ms
22ms	29ms
24ms	30ms
21ms	29ms
23ms	29ms
23ms	29ms
23ms	29ms
22ms	28ms
23ms	30ms

FastInflate takes 22.7ms on average

LayoutInflater takes 29ms on average

Performance improved by about 27.75%

• Time consumption of second inflate layout（Unit: µs）

FastInflate	LayoutInflater
1895µs	2810µs
2009µs	3223µs
1898µs	2659µs
1904µs	2990µs
1891µs	2767µs
1861µs	2802µs
2051µs	3004µs
1886µs	3001µs
1957µs	2930µs
1888µs	2940µs

FastInflate takes 1924µs on average

LayoutInflater takes 2912.6µs on average

Performance improved by about 51.38%

• Time consumption of inflate 1000 times for the same layout（单位：ms 毫秒）

FastInflate	LayoutInflater
835ms	1318ms
848ms	1330ms
844ms	1343ms
845ms	1338ms
848ms	1344ms
853ms	1343ms
856ms	1354ms
855ms	1363ms
846ms	1369ms
843ms	1344ms

FastInflate takes 847.3ms on average

LayoutInflater takes 1344.6ms on average

Performance improved by about 58.69%

Repositories

• Gradle Plugin Portal

• Maven Central

LICENSE

This project uses the Apache-2.0 license.