我在 eclipse 下面的 android 工程 添加 gradle 之后 在命令行编译 报错 这是什么问题？

为什么不贴出你的 build.gradle 呢

@scutmason
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.12.+'
}
}
apply plugin: 'com.android.application'
apply plugin: 'eclipse'
dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
}

android {
compileSdkVersion 22
buildToolsVersion "23.0.3"

release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
ndk {
moduleName "itsec"
abiFilters "armeabi", "armeabi-v7a"
}
}
debug {
ndk {
moduleName "itsec"
abiFilters "armeabi", "armeabi-v7a"
}
}

sourceSets {
main {
manifest.srcFile 'AndroidManifest.xml'
java.srcDirs = ['src']
resources.srcDirs = ['src']
aidl.srcDirs = ['src']
renderscript.srcDirs = ['src']
res.srcDirs = ['res']
assets.srcDirs = ['assets']
}

// Move the tests to tests/java, tests/res, etc...
instrumentTest.setRoot('tests')

// Move the build types to build-types/<type>
// For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
// This moves them out of them default location under src/<type>/... which would
// conflict with src/ being used by the main source set.
// Adding new build types or product flavors should be accompanied
// by a similar customization.
debug.setRoot('build-types/debug')
release.setRoot('build-types/release')
}
}

andorid{}里面没有 release 这个方法，我看了下我的 release{}是放在 buildTypes 里面的。

你用 android studio 的话导入工程可以自动生成脚本

添加 build type ,这个是 gradle 必要的，可以看一下文档

buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}