我想将我的compileSdkVersion从23更改为21。因此,我已经在build.gradle中进行了以下更改,但是我收到了以下错误。我该怎么解决?
无法找到哈希字符串为“android-21”的目标
apply plugin: 'com.android.application'
android {
compileSdkVersion 21
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "com.example.shalabh.fly"
minSdkVersion 14
targetSdkVersion 21
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.android.support:appcompat-v7:23.0.1'
compile files('libs/httpclient-4.1-beta1.jar')
}