ObjectAnimator不可逆

Question

我有一個視圖集合能夠向下移動屏幕，然後反轉，但現在當我嘗試移動CardView時，它將會關閉但不能備份。

當用戶點擊一個按鈕時，它會提示視圖的集合下降/消失，當用戶再次單擊按鈕時，它們會返回。在由視圖消失集合創建的空間中，CardView下降。我有CardView下拉菜單，但是當用戶單擊按鈕時，視圖集合會返回而不是CardView - 而只是消失。乾杯!

MainActivity（NB：在OnCreate中（））

 ... 


final View blankCard = findViewById(R.id.child_card_template); 
    blankCard.setVisibility(blankCard.INVISIBLE); 

     ... 

    ImageButton btn = (ImageButton) findViewById(R.id.imageLeft); 
    btn.setOnClickListener(new View.OnClickListener() { 

     int click_Animation_Type = 0; 

     View viewTest = findViewById(R.id.child_card_template); 
     View viewCard = viewTest; 

     @Override 
     public void onClick(View view) { 
      switch(click_Animation_Type) { 
       case 0: 
        moveSecondRow(); 
        moveCardViewLayout(); 
        click_Animation_Type = 1; 
        break; 

       case 1: 
        rewindSecondRow(); 
        rewindCardViewLayout(); 
        click_Animation_Type = 0; 
        break; 
      } 
     } 

      public void moveCardViewLayout() { 
       View viewTest = findViewById(R.id.child_card_template); 
       ObjectAnimator viewTestMovi = ObjectAnimator.ofFloat(viewTest, "translationY", 0f, 258f); 
       if(viewTest.getVisibility()==View.INVISIBLE) { 
        viewTestMovi.setDuration(250); 
        viewTestMovi.start(); 
        viewTest.setVisibility(viewTest.VISIBLE); 
       } 
      } 

      public void rewindCardViewLayout() { 
       View viewTest = findViewById(R.id.child_card_template); 
       ObjectAnimator viewTestMoviReverse = ObjectAnimator.ofFloat(viewTest, "translationY", 258f, 0f); 
       if (viewTest.getVisibility() == View.VISIBLE) { 
        viewTestMoviReverse.setDuration(250); 
        viewTestMoviReverse.start(); 
        viewTest.setVisibility(viewCard.INVISIBLE); 

        //THERE'S NO ANIMATION, JUST TURNING INVISIBLE. 
        //Registers View is visible. 
       } 
      } 

      public void moveSecondRow() { 
       for (int i = 0; i < list.size(); i++) { 
        ObjectAnimator bottomRow = ObjectAnimator.ofFloat(list.get(i), "translationY", 0f, 300f); 
        bottomRow.setDuration(250);//set duration 
        Animation fadeOutAnimation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_out_anim); 
        bottomRow.start();//start animation 
        list.get(i).startAnimation(fadeOutAnimation); 
        list.get(i).setVisibility(View.GONE); 
       } 
      } 

      public void rewindSecondRow() { 
       for (int i = 0; i < list.size(); i++) { 
        ObjectAnimator bottomRow = ObjectAnimator.ofFloat(list.get(i), "translationY", 300f, 0f); 
        bottomRow.setDuration(300);//set duration 
        Animation fadeInAnimation = AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_in_anim); 
        bottomRow.start();//start animation 
        list.get(i).setVisibility(View.VISIBLE); 
        list.get(i).startAnimation(fadeInAnimation); 
       } 
      } 

    }); 

Answer 1

每次click_Animation_Type開始於0將click_Animation_Type = 0;層的setContentView下方。