第一步:react-native bundle --entry-file index.js --platform android --dev false --bundle-output ./android/app/src/main/assets/index.android.bundle --assets-dest ./android/app/src/main/res/
第二步:
error: uncompiled PNG file passed as argument. Must be compiled first into .flat file..
error: failed parsing overlays.
解决办法:在你android文件夹gradle.properties文件里加上这句话:android.enableAapt2=false
第三步:
android studio 3.0之后,Gradle版本也同样升级了,但是升级之后打包出现node_modules_reactnavigation_src_views_assets_backicon.png图片重复问题,这个原因我在Github上面找了好久,才发现是因为Gradle2.3之后,离线打包的路径都会在drawable-xxx-v4中,原版的离线路径在drawable-xxx中,所以导致图片重复问题,怎么解决这个问题呢:
1,修改assetPathUtils.js
assetPathUtils.js文件路径:node_modules\react-native\local-cli\bundle\assetPathUtils.js
修改:getAndroidAssetSuffix方法
修改前:
function getAndroidAssetSuffix(scale) {
switch (scale) {
case 0.75: return 'ldpi';
case 1: return 'mdpi';
case 1.5: return 'hdpi';
case 2: return 'xhdpi';
case 3: return 'xxhdpi';
case 4: return 'xxxhdpi';
}
}
修改后:
function getAndroidAssetSuffix(scale) {
switch (scale) {
case 0.75: return 'ldpi-v4';
case 1: return 'mdpi-v4';
case 1.5: return 'hdpi-v4';
case 2: return 'xhdpi-v4';
case 3: return 'xxhdpi-v4';
case 4: return 'xxxhdpi-v4';
}
}
修改完之后 把之前的drawable-xxx文件夹删掉,然后就可以正常打包了
drawable-xxx文件路径:YourProject\android\app\src\main\res
第四步:
react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res/
cd android && ./gradlew assembleRelease
如果还不行就试试增加doLast模块,就在node_modules/react-native/react.gradle文件,位置如下
def currentBundleTask = tasks.create(
name: "bundle${targetName}JsAndAssets",
type: Exec) {
group = "react"
description = "bundle JS and assets for ${targetName}."
// Create dirs if they are not there (e.g. the "clean" task just ran)
doFirst {
jsBundleDir.deleteDir()
jsBundleDir.mkdirs()
resourcesDir.deleteDir()
resourcesDir.mkdirs()
}
doLast {
def moveFunc = { resSuffix ->
File originalDir = file("${resourcesDir}/drawable-${resSuffix}")
if (originalDir.exists()) {
File destDir = file("${resourcesDir}/drawable-${resSuffix}-v4")
ant.move(file: originalDir, tofile: destDir)
}
}
moveFunc.curry("ldpi").call()
moveFunc.curry("mdpi").call()
moveFunc.curry("hdpi").call()
moveFunc.curry("xhdpi").call()
moveFunc.curry("xxhdpi").call()
moveFunc.curry("xxxhdpi").call()
}
// Set up inputs and outputs so gradle can cache the result
inputs.files fileTree(dir: reactRoot, excludes: inputExcludes)
outputs.dir jsBundleDir
outputs.dir resourcesDir
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