由于下载最新的SDK和安装Android的工作室，我的项目未能建立。我得到以下信息：

 错误：摇篮：执行失败的任务：SampleProject：processProdDebugManifest。
＆GT;清单合并失败：使用-SDK：的minSdkVersion 14不能比L型小图书馆com.android.support:support-v4:21.0.0-rc1声明
 

解决方案

注意：这已被更新，以反映API 21，棒棒堂的释放。请务必下载最新的SDK。

在我的模块中的一个我曾在build.gradle如下：

 相关性{
    编译com.android.support:support-v4:+
}
 

更改为

 相关性{
    //不使用动态更新。
    编译com.android.support:support-v4:21.0.0
}
 

固定的问题。

请确保你没有做一般包含 com.android.support:support-v4的：+ 或其它任何支持库（V7，V13，appcompat，等），在任何地方你的项目。

我认为这个问题是 V4 + 拿起发布候选版（21.0.0-RC1）最新大号释放这明显要求第l SDK。

编辑：

如果您需要使用新的意见（CardView，RecyclerView，和调色板），以下应该工作：

 编译com.android.support:cardview-v7:21.0.0
编译com.android.support:recyclerview-v7:21.0.0
编译com.android.support:palette-v7:21.0.0
 

（感谢EddieRingle上/ androiddev - http://www.reddit.com/r/androiddev/comments/297xli/howto_use_the_v21_support_libs_on_older_versions/)

另一个修改

请务必看到有关appcompat-V7和upvote它是否有助于低于@ murtuza的答案！

Since downloading the latest SDK and installing Android Studio, my project fails to build. I get the following message:

Error:Gradle: Execution failed for task ':SampleProject:processProdDebugManifest'.
> Manifest merger failed : uses-sdk:minSdkVersion 14 cannot be smaller than version L declared in library com.android.support:support-v4:21.0.0-rc1

Note: This has been updated to reflect the release of API 21, Lollipop. Be sure to download the latest SDK.

In one of my modules I had the following in build.gradle:

dependencies {
    compile 'com.android.support:support-v4:+'
}

Changing this to

dependencies {
    // do not use dynamic updating.
    compile 'com.android.support:support-v4:21.0.0' 
}

fixed the issue.

Make sure you're not doing a general inclusion of com.android.support:support-v4:+ or any other support libraries (v7, v13, appcompat, etc), anywhere in your project.

I'd assume the problem is v4:+ picks up the release candidate (21.0.0-rc1) latest L release which obviously requires the L SDK.

Edit:

If you need to use the new views (CardView, RecyclerView, and Palette), the following should work:

compile "com.android.support:cardview-v7:21.0.0"
compile "com.android.support:recyclerview-v7:21.0.0"
compile "com.android.support:palette-v7:21.0.0"

(Credit to EddieRingle on /androiddev - http://www.reddit.com/r/androiddev/comments/297xli/howto_use_the_v21_support_libs_on_older_versions/)

Another Edit

Be sure to see @murtuza's answer below regarding appcompat-v7 and upvote if it helps!