AnimatorSet class return RuntimeException（「Stub！」）

我試圖製作一個android FAB動畫工具欄。我使用這個例子https://github.com/vpaliyX/FAB-Toolbar-Example來檢查它是如何工作的，但我注意到一件奇怪的事情。克隆示例中的AnimatorSet類看起來很好，但是當我試圖在我的項目中打開它時，我已經得到了這個。這是執行還是進口問題？AnimatorSet class return RuntimeException（「Stub！」）

package android.animation; 

import android.animation.Animator; 
import android.animation.TimeInterpolator; 
import java.util.ArrayList; 
import java.util.Collection; 
import java.util.List; 

public final class AnimatorSet extends Animator { 
    public AnimatorSet() { 
     throw new RuntimeException("Stub!"); 
    } 

    public void playTogether(Animator... items) { 
     throw new RuntimeException("Stub!"); 
    } 

    public void playTogether(Collection<Animator> items) { 
     throw new RuntimeException("Stub!"); 
    } 

    public void playSequentially(Animator... items) { 
     throw new RuntimeException("Stub!"); 
    } 

    public void playSequentially(List<Animator> items) { 
     throw new RuntimeException("Stub!"); 
    } 

    public ArrayList<Animator> getChildAnimations() { 
     throw new RuntimeException("Stub!"); 
    } 

    public void setTarget(Object target) { 
     throw new RuntimeException("Stub!"); 
    } 

    public void setInterpolator(TimeInterpolator interpolator) { 
     throw new RuntimeException("Stub!"); 
    } 

    public TimeInterpolator getInterpolator() { 
     throw new RuntimeException("Stub!"); 
    } 

    public AnimatorSet.Builder play(Animator anim) { 
     throw new RuntimeException("Stub!"); 
    } 

    public void cancel() { 
     throw new RuntimeException("Stub!"); 
    } 

    public void end() { 
     throw new RuntimeException("Stub!"); 
    } 

    public boolean isRunning() { 
     throw new RuntimeException("Stub!"); 
    } 

    public boolean isStarted() { 
     throw new RuntimeException("Stub!"); 
    } 

    public long getStartDelay() { 
     throw new RuntimeException("Stub!"); 
    } 

    public void setStartDelay(long startDelay) { 
     throw new RuntimeException("Stub!"); 
    } 

    public long getDuration() { 
     throw new RuntimeException("Stub!"); 
    } 

    public AnimatorSet setDuration(long duration) { 
     throw new RuntimeException("Stub!"); 
    } 

    public void setupStartValues() { 
     throw new RuntimeException("Stub!"); 
    } 

    public void setupEndValues() { 
     throw new RuntimeException("Stub!"); 
    } 

    public void pause() { 
     throw new RuntimeException("Stub!"); 
    } 

    public void resume() { 
     throw new RuntimeException("Stub!"); 
    } 

    public void start() { 
     throw new RuntimeException("Stub!"); 
    } 

    public AnimatorSet clone() { 
     throw new RuntimeException("Stub!"); 
    } 

    public String toString() { 
     throw new RuntimeException("Stub!"); 
    } 

    public long getTotalDuration() { 
     throw new RuntimeException("Stub!"); 
    } 

    public class Builder { 
     Builder() { 
      throw new RuntimeException("Stub!"); 
     } 

     public AnimatorSet.Builder with(Animator anim) { 
      throw new RuntimeException("Stub!"); 
     } 

     public AnimatorSet.Builder before(Animator anim) { 
      throw new RuntimeException("Stub!"); 
     } 

     public AnimatorSet.Builder after(Animator anim) { 
      throw new RuntimeException("Stub!"); 
     } 

     public AnimatorSet.Builder after(long delay) { 
      throw new RuntimeException("Stub!"); 
     } 
    } 
}

來源

2017-02-17 Expiredmind

您的IDE正在反編譯框架類（'android.animation.AnimatorSet'）。真正的實現在運行時鏈接（例如，[7.1.1的版本]（https://github.com/android/platform_frameworks_base/blob/android-7.1.1_r22/core/java/android/animation/AnimatorSet.java））。 – CommonsWare

那麼它在這種情況下是否正確？奇怪的是，在一個項目中，它反編譯課程，但在其他項目中沒有。 – Expiredmind

「有什麼奇怪的是，在一個項目中反編譯類，但在另一個項目中」 - 您可能沒有從SDK Manager中下載所有Android版本的源代碼。 – CommonsWare

如果您希望查看android框架類的來源，那麼您需要從SDK管理器中下載它們。打開SDK管理器，找「Android的源代碼x」，其中x是您正在開發並下載的Android版本。

來源

2017-02-17 14:16:52

AnimatorSet class return RuntimeException（「Stub！」）

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