源碼簡(jiǎn)介：3D視差引導(dǎo)頁(yè)，ViewPager滑動(dòng)時(shí)子控件平移，縮放，3D翻轉(zhuǎn)

源碼效果：

源碼片段：

/** 
     * 當(dāng)我們的ViewPager滑動(dòng)的時(shí)候，每一個(gè)頁(yè)面都會(huì)回調(diào)該方法 
     * position:當(dāng)前第幾個(gè)頁(yè)面 
     * view:某個(gè)頁(yè)面對(duì)應(yīng)的視圖 --- 布局的視圖 
     */ 
    @Override 
    public void transformPage(View view, float position) { 
        // 漸變效果，判斷區(qū)間（-1，1） 
        if (position<1 && position >-1) { 
            // 視差加速效果，讓里面的所有子空間都給一個(gè)加速偏移量 
            ViewGroup rl=(ViewGroup) view.findViewById(R.id.rl); 
//          for (int i = 0; i < rl.getChildCount(); i++) { 
//              View child=rl.getChildAt(i); 
//              float factoe=(float) (Math.random()*2); 
//              if (child.getTag() == null) { 
//                  child.setTag(factoe); 
//              }else{ 
//                  factoe=(Float) child.getTag(); 
//              } 
//              // 加速偏移量(在child原來(lái)的位置再加一個(gè)偏移值) 
//              child.setTranslationX(-position*200*factoe); 
//              child.setTranslationY(position*100*factoe); 
//          } 
            // 縮放效果 
            // 縮放的范圍：0-1 
            rl.setScaleX(Math.max(0.8f,1-Math.abs(position))); 
            rl.setScaleY(Math.max(0.8f,1-Math.abs(position))); 
              
            // 3D翻轉(zhuǎn)動(dòng)畫(huà) 往外翻轉(zhuǎn) 
//          rl.setPivotX(position<0f?rl.getWidth():0f); 
//          rl.setPivotY(rl.getHeight()*0.5f); 
//          rl.setRotationY(position*90); 
              
            // 3D翻轉(zhuǎn)動(dòng)畫(huà) 往內(nèi)翻轉(zhuǎn) 
//          rl.setPivotX(position<0f?rl.getWidth():0f); 
//          rl.setPivotY(rl.getHeight()*0.5f); 
//          rl.setRotationY(-position*90); 
              
            // 羊肉串效果 
            rl.setPivotX(rl.getHeight()*0.5f); 
            rl.setPivotY(rl.getHeight()*0.5f); 
            rl.setRotationY(-position*90); 
        } 
    } 

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