[置顶] Android 开发问题汇总（持续更新）

问题一： Error:com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details

D:\AndroidStudioProject02\ProjectDemo11\MapDemo\mapapp\build\intermediates\incremental\mergeDebugResources\merged.dir\values\values.xml
Error:(2054) error: style attribute '@android:attr/windowEnterAnimation' not found.
Error:(2055) error: style attribute '@android:attr/windowExitAnimation' not found.
Error:(2054) style attribute '@android:attr/windowEnterAnimation' not found.
Error:(2055) style attribute '@android:attr/windowExitAnimation' not found.
Error:failed linking references.
Error:java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Error:java.util.concurrent.ExecutionException: com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Error:com.android.tools.aapt2.Aapt2Exception: AAPT2 error: check logs for details
Error:Execution failed for task ':mapapp:processDebugResources'.
> Failed to execute aapt

Open the gradle.properties and add this:

android.enableAapt2=false

问题二：

 升级gradle3.0后，butterknife注解 就不能使用apt插件了。所以让采用annotationProcessor工具。 

解决:
把project下的build.gradle 当中的依赖

buildscript {
repositories {
jcenter()
mavenCentral()
google()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.1'
classpath ‘com.neenbedankt.gradle.plugins:android-apt:1.8’

}
}

修改成如下

buildscript {
repositories {
jcenter()
mavenCentral()
google()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.1'

}
}

然后再把module下的build.gradle
：

dependencies {

compile fileTree(include: ['*.jar'], dir: 'libs')
testCompile 'junit:junit:4.12'

compile ‘com.android.support:appcompat-v7:25.3.1’

compile ‘com.jakewharton:butterknife:8.5.1’
apt ‘com.jakewharton:butterknife-compiler:8.5.1’

}

修改成：

 dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.android.support:design:26.1.0'
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
/**
* 注释框架
*/
compile 'com.jakewharton:butterknife:8.5.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1'}

问题三：

 java.lang.RuntimeException:
Unable to start activity ComponentInfo{...}

  在Android studio创建一个新项目时，系统会给工程创建目录文件
如：drawable 和 drawable-v24 这两个目录，如果我们把

drawable-v24它当成放图片的文件夹，并在资源中引用了这图片，那么会扔出一个
运行异常错误。为啥会出现这个bug，不详...

<ImageView
android:src="@drawable/peopleicon"
android:layout_width="80dp"
android:layout_height="80dp" />

 问题四：

 Error:All
flavors must now belong to a named flavor dimension.Learn more at https://d.android.com/r/tools/flavorDimensions-missing-error-message.html 

Error:All flavors must now belong to a named flavor dimension.Learn more at https://d.android.com/r/tools/flavorDimensions-missing-error-message.html

解决方法，在主app的build.gradle里面的添加：

defaultConfig {
targetSdkVersion：***
minSdkVersion ：***
versionCode：***
versionName ：***
//版本名后面添加一句话，意思就是flavor dimension 它的维度就是该版本号，这样维度就是都是统一的了
flavorDimensions "versionCode"
}

 问题五：

 Error:Removing unused resources requires
unused code shrinking to be turned on. See http://d.android.com/r/tools/shrink-resources.html for more information.

Error:Removing unused resources requires unused code shrinking to be turned on. See http://d.android.com/r/tools/shrink-resources.html for more information. 原因是我加了移无用资源造成的：

// 移除无用的resource文件
shrinkResources true

把它注释掉即可