我刚刚尝试使用Android Studio.我创建了空白项目并试图创建Activity扩展AppCompatActivity.不幸的Android Studio"说"它
无法解析符号'AppCompatActivity'
我有 compile "com.android.support:appcompat-v7:22.0.+"我的"app"模块的依赖列表和重建项目几次.但是我只能使用ActionBarActivity.我究竟做错了什么?
android android-appcompat gradle android-support-library android-studio
当我尝试启动我的应用程序时,我的Mainactivity在“ setContentView(R.layout.activity_main);”处的oncreate()方法中引发此错误 。 :
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.sanchez.worldgramproject/com.example.sanchez.worldgramproject.Fragments.MainActivity}: android.view.InflateException: Binary XML file line #16: Binary XML file line #16: Error inflating class android.support.design.widget.BottomNavigationView
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迁移到androidx后出现此错误,经过进一步检查,我注意到Bottomnavigationview类中的import语句已过时(不是androidx格式,而是旧格式)。Bottomnavigationview类文件是只读的,因此我无法对其进行编辑。
摇篮:
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
buildToolsVersion '28.0.3'
defaultConfig {
applicationId "com.example.sanchez.worldgramproject"
minSdkVersion 21
targetSdkVersion 28
multiDexEnabled true
versionCode 0
versionName "0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
debug {
debuggable true
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
implementation …Run Code Online (Sandbox Code Playgroud) 我想尝试Intellij平台进行android开发,但是即使重新启动它也显示gradle失败。请帮忙。
我试图调整线
implementation 'com.android.support:appcompat-v7:29.+'
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到其他版本,但无济于事。
这是我的模块级gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "29.0.1"
defaultConfig {
applicationId "com.example.myapplication"
minSdkVersion 23
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:29.+'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
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这是我的项目级别Gradle
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google() …Run Code Online (Sandbox Code Playgroud)