libpng错误：不是PNG文件 [英] libpng error: Not a PNG file
本文介绍了libpng错误：不是PNG文件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我已经尝试过几次升级Android Studio构建工具超过1.3.1，但我总是最终与这个libpng错误。我解决了一个错误，通过完全删除maven依赖（因为gradle控制台指向确切的问题文件的位置），但现在我陷入了相同的错误，没有指针，问题文件的位置。我缺少什么？这是gradle控制台日志：
I have tried several times to upgrade Android Studio build tools past 1.3.1, but I always end up with this libpng error. I solved one of the errors by completely removing a maven dependency (since the gradle console pointed to exactly where the problem file was), but now I am stuck with the same error and no pointer as to where the problem file is. Am I missing something? Here is the gradle console log:
Executing tasks: [:app:generateDebugSources, :app:generateDebugAndroidTestSources]
Configuration on demand is an incubating feature.
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:app:prepareComAndroidDatabindingAdapters10Rc3Library UP-TO-DATE
:app:prepareComAndroidDatabindingLibrary10Rc3Library UP-TO-DATE
:app:prepareComAndroidSupportAppcompatV72310Library UP-TO-DATE
:app:prepareComAndroidSupportCardviewV72310Library UP-TO-DATE
:app:prepareComAndroidSupportDesign2310Library UP-TO-DATE
:app:prepareComAndroidSupportMediarouterV72220Library UP-TO-DATE
:app:preDebugAndroidTestBuild UP-TO-DATE
:app:prepareComAndroidSupportMultidex101Library UP-TO-DATE
:app:prepareComAndroidSupportPercent2310Library UP-TO-DATE
:app:prepareComAndroidSupportRecyclerviewV72310Library UP-TO-DATE
:app:prepareComAndroidSupportSupportV42310Library UP-TO-DATE
:app:prepareComCrashlyticsSdkAndroidAnswers132Library UP-TO-DATE
:app:prepareComCrashlyticsSdkAndroidBeta113Library UP-TO-DATE
:app:prepareComCrashlyticsSdkAndroidCrashlytics252Library UP-TO-DATE
:app:prepareComCrashlyticsSdkAndroidCrashlyticsCore235Library UP-TO-DATE
:app:prepareComFacebookAndroidFacebookAndroidSdk410Library UP-TO-DATE
:app:prepareComFacebookFrescoDrawee061Library UP-TO-DATE
:app:prepareComFacebookFrescoFbcore061Library UP-TO-DATE
:app:prepareComFacebookFrescoFresco061Library UP-TO-DATE
:app:prepareComFacebookFrescoImagepipeline061Library UP-TO-DATE
:app:prepareComGithubRahatarmanahmedCircularprogressview232Library UP-TO-DATE
:app:prepareComGoogleAndroidExoplayerExoplayerR142Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServices810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAds810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAnalytics810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAppindexing810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAppinvite810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAppstate810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesBase810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesBasement810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesCast810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesDrive810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesFitness810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesGames810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesGcm810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesIdentity810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesLocation810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesMaps810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesMeasurement810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesNearby810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesPanorama810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesPlus810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesSafetynet810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesVision810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesWallet810Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesWearable810Library UP-TO-DATE
:app:prepareIoFabricSdkAndroidFabric136Library UP-TO-DATE
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources
AAPT err(Facade for 961886319): libpng error: Not a PNG file
FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:mergeDebugResources'.
> Some file crunching failed, see logs for details
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
BUILD FAILED
Total time: 4.398 secs
下面是我的build.gradle（模块：app）
Below is my build.gradle (Module:app)
buildscript {
repositories {
maven { url 'https://maven.fabric.io/public' }
}
dependencies {
classpath 'io.fabric.tools:gradle:1.+'
}
}
apply plugin: 'com.android.application'
apply plugin: 'io.fabric'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "us.revibe.revibe"
minSdkVersion 16
targetSdkVersion 23
versionCode 1
versionName "1.0"
multiDexEnabled = true
}
buildTypes {
debug{
debuggable true
}
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dataBinding {
enabled = true
}
dexOptions {
javaMaxHeapSize "4g"
}
}
repositories {
// maven { url 'http://maven.livotovlabs.pro/content/groups/public' }
maven { url 'https://maven.fabric.io/public' }
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.android.support:appcompat-v7:23.1.0'
compile 'com.android.support:cardview-v7:23.1.0'
compile 'com.android.support:recyclerview-v7:23.1.0'
compile 'com.android.support:percent:23.1.0'
compile 'com.android.support:design:23.1.0'
compile files('libs/core-3.2.1.jar')
compile files('libs/retrofit-1.9.0.jar')
compile files('libs/connectionclass-1.0.1.jar')
compile 'com.squareup.okhttp:okhttp-urlconnection:2.0.0'
compile 'com.squareup.okhttp:okhttp:2.3.0'
compile 'com.joanzapata.android:android-iconify:1.0.8'
compile 'com.github.rahatarmanahmed:circularprogressview:2.3.2'
compile 'com.facebook.android:facebook-android-sdk:4.1.0'
compile 'com.facebook.fresco:fresco:0.6.1+'
compile 'com.google.android.gms:play-services:8.1.0'
compile 'com.android.support:multidex:1.0.1'
compile 'com.amazonaws:aws-android-sdk-core:2.+'
compile 'com.amazonaws:aws-android-sdk-cognito:2.+'
compile 'com.amazonaws:aws-android-sdk-s3:2.+'
// compile ('eu.livotov.labs:zxscanlib:2.0.1@aar') {transitive=true}
compile 'com.google.android.exoplayer:exoplayer:r1.4.2'
compile('com.crashlytics.sdk.android:crashlytics:2.5.2@aar') {
transitive = true;
}
}
下面是我的顶级build.gradle
And below is my top-level build.gradle
buildscript {
repositories {
jcenter()
mavenCentral()
}
dependencies {
classpath "com.android.tools.build:gradle:1.5.0"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
还原回类路径com.android.tools.build ：gradle：1.3.1似乎解决了问题，但我想开始使用所有的新功能
Reverting back to classpath "com.android.tools.build:gradle:1.3.1" seems to fix the problem, but I would like to begin using all the new features
推荐答案
问题是在你的png文件。可能你的图像是通过一些png优化工具优化的。 Android studio使用 AAPT 工具在制作项目时优化图片。此问题的原因是 AAPT 工具不知道您已预处理图片。
The problem is in your png files. Probably you images were optimized by some png optimization tools. Android studio use AAPT tool to optimize images during building your project. The reason for this problem is that AAPT tool doesn't know that you preprocessed the image.
为了在您的应用程序中解决这个问题，您需要在gradle中指定选项
To get around this in your application you need to specify the option in gradle
aaptOptions{
cruncherEnabled = false
}
这是对所有png文件禁用 AAPT 优化。
This is disable AAPT optimization for all of your png files.
提出了类似问题这里
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