Android Studio 3.1 调色板无Transitions分类问题求助

Hey there! I totally get how frustrating it is when a tutorial’s steps don’t match your IDE version—been there plenty of times myself. Let’s break down why you’re missing that Transitions menu in Android Studio 3.1 and how to work around it.

• IDE UI Restructuring: The dedicated Transitions section in the Palette was part of Android Studio 2.3’s layout editor, but Google revamped the interface in later versions (including 3.1). They moved transition-related tools to other parts of the IDE to simplify the workflow, so it’s not missing—it’s just in a new spot.
• No Framework Issues: Rest easy, your setup isn’t broken. All the transition functionality is still available, just accessed differently.

Here are three straightforward ways to add and manage transitions without that old Palette menu:

1. Use the Attributes Panel
   Open your activity layout in Design view, select the view/layout you want to animate, then head to the Attributes panel (right side of the IDE). Scroll down to the Animation section—you’ll find options for enter/exit transitions, transition names (critical for shared element transitions), and more.

2. Edit the Layout XML Directly
   Sometimes going straight to code is faster. You can add transition attributes manually. For example, to enable layout changes animation:

   <LinearLayout
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:animateLayoutChanges="true"
       android:transitionName="my_shared_element">
       <!-- Your content here -->
   </LinearLayout>
   

   For activity-level transitions, set them programmatically in your Kotlin code:

   override fun onCreate(savedInstanceState: Bundle?) {
       super.onCreate(savedInstanceState)
       // Set an enter transition (e.g., Explode, Slide, Fade)
       window.enterTransition = Explode()
       setContentView(R.layout.activity_main)
   }
   

3. Use the Transition Manager Tool
   For more complex transition sets, go to Tools > Android > Transition Manager. This visual tool lets you build, preview, and adjust transitions—think of it as the more powerful replacement for that old Palette menu.

Make sure you have the transition library added to your module-level build.gradle file (if you’re using AndroidX):

dependencies {
    implementation 'androidx.transition:transition:1.4.1'
}

If you’re still using the old support libraries, use com.android.support:transition:28.0.0 instead.

内容的提问来源于stack exchange，提问作者user2437417