- 引言:
从AS2.3升级到3.0后,3.0还是不稳定,遇到一些bug:
总结帖如下:遇到的新问题:
- 1,新建项目报错:
Unable to resolve dependency for :app@debug/compileClasspath': Could not resolve com.android.support:appcompat-v7:26.1.0.;
Unable to resolve dependency for :constraint-layout: Could not resolve constraint-layout:1.0.2;
- 处理bug
- 1.1处理constraint-layout:1.0.2无法依赖的问题:
setting->System setting->android SDK->SDK Tools 最下面关于
constraint-layout的依赖都导入;- 1.2处理其他无法依赖,在build.gradle文件中
- 1.2.1 appcompat-v7:26.1.0修改
implementation 'com.android.support:appcompat-v7:26.1.0'
改为
implementation 'com.android.support:appcompat-v7:26.+'androidTestImplementation
- 1.2.2 espresso-core修改
'com.android.support.test.espresso:espresso-core:3.0.1'
改为
androidTestImplementation 'com.android.support.test.espresso:espresso-core:2.2.2'
-
1.2.3 runner修改
androidTestImplementation 'com.android.support.test:runner:1.0.1'
改为
androidTestImplementation 'com.android.support.test:runner:0.4'
- 1.3 总体修改bug如下:
dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'com.android.support:appcompat-v7:26.+' implementation 'com.android.support.constraint:constraint-layout:1.0.2' testImplementation 'junit:junit:4.12' androidTestImplementation 'com.android.support.test:runner:0.4' androidTestImplementation 'com.android.support.test.espresso:espresso-core:2.2.2'}
- 2,如果项目被android3.0编译过,重新用AS3.0以下的AS打开会报错如下:
Error:Jack is required to support java 8 language features. Either enable Jack or remove sourceCompatibility JavaVersion.VERSION_1_8
需要在
defaultConfig { applicationId "com.xxx" minSdkVersion 19 targetSdkVersion 24 versionCode 1 versionName "1.0" jackOptions { enabled true }}
需要添加
jackOptions {enabled true}- 3,AS3.0超过方法数设置处理
以前如果遇超过方法数超过65535的解决办法一般是defaultConfig 中添加
multiDexEnabled truedependencies { compile 'com.android.support:multidex:1.0.0'}
Application 类重写方法:
@Overrideprotected void attachBaseContext(Context base) { super.attachBaseContext(base); MultiDex.install(this);}
现在AS3.0好像没有这个限制
com.android.support:multidex:1.0.0这个包也无法依赖,把依赖包、multiDexEnabled true、application中的东西全部删除就可以正常运行;- PS补充
Android Studio 3.0 最近升级为 3.0.1
新建项目报错问题,google已经修复。按照系统默认的dependencies完全可以gradle,项目不会报错。不过gradle的version需要按照系统提示升级为4.1;classpath 升级为'com.android.tools.build:gradle:3.0.1'- AS3.0使用Rxjava/Rxandroid的冲突解决:
使用Rxjava依赖如下:
implementation('com.squareup.retrofit2:adapter-rxjava:2.1.0') { exclude group: 'io.reactivex' }implementation 'io.reactivex:rxandroid:1.2.1'implementation 'io.reactivex:rxjava:1.1.6'
并添加:packagingOptions { exclude 'META-INF/rxjava.properties'}解决OS冲突:
android { compileSdkVersion 26 defaultConfig { applicationId "com.xxx.xxxxx.xxxxx" minSdkVersion 18 targetSdkVersion 26 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" packagingOptions { exclude 'META-INF/rxjava.properties' } }
这样做再安装apk的时候会报错如下:
java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex
只能手动在libs文件夹中添加:rxandroid的jar包,buildPath。最后的依赖如下:
implementation('com.squareup.retrofit2:adapter-rxjava:2.1.0') { exclude group: 'io.reactivex' }implementation 'io.reactivex:rxjava:1.1.6'implementation files('libs/rxandroid-0.24.0.jar')
才解决冲突正常使用rxjava/RxAndroid;
希望Google能解决这个冲突;