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所以我对android很新,我正在尝试使用Android Studio中的本指南设置Android设计支持库的浮动操作按钮.

我的项目:Noted build.gradle文件:

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.2.3'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

我的模块:app build.gradle文件:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"

    defaultConfig {
        applicationId "com.example.noted"
        minSdkVersion 21
        targetSdkVersion 22
        versionCode 1 …