android - 操作栏支持 v7 android

Question

IDE:Android Studio

1. 创建新项目
2. 将appcompat的.jar复制到/lib/
3. 在项目设置中设置依赖
4. 将编译“com.android.support:appcompat-v7:18.0.+”添加到build.gradle

5. 添加如下代码:

   公共(public)类 MainActivity 扩展了 ActionBarActivity {

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
   
       ActionBar actionBar = getSupportActionBar();
       actionBar.setTitle("hello");
   }
   

还有……什么都没有。获取下一个错误:

"Gradle: A problem occurred configuring project ':MyApplication'.
> Failed to notify project evaluation listener.   > Could not resolve all dependencies for configuration ':MyApplication:_DebugCompile'.
  > Could not find any version that matches com.android.support:appcompat-v7:18.0.+.
    Required by:
        MyApplicationProject:MyApplication:unspecified"

如何修复？我忘了做什么？

Answer 1

你需要安装支持库

3.Select the Android Support Library item.

Note: If you're developing with Android Studio, select and install theAndroid Support Repository item instead.http://developer.android.com/tools/support-library/setup.html