public class Rotate3D extends Animation { 
  private float fromDegree;  // 旋轉(zhuǎn)起始角度 
  private float toDegree;   // 旋轉(zhuǎn)終止角度 
  private float mCenterX;   // 旋轉(zhuǎn)中心x 
  private float mCenterY;   // 旋轉(zhuǎn)中心y 
  private Camera mCamera; 
  public Rotate3D(float fromDegree, float toDegree, float centerX, float centerY) { 
    this.fromDegree = fromDegree; 
    this.toDegree = toDegree; 
    this.mCenterX = centerX; 
    this.mCenterY = centerY; 
  } 
  @Override 
  public void initialize(int width, int height, int parentWidth, int parentHeight) { 
    super.initialize(width, height, parentWidth, parentHeight); 
    mCamera = new Camera(); 
  } 
  @Override 
  protected void applyTransformation(float interpolatedTime, Transformation t) { 
    final float FromDegree = fromDegree; 
    float degrees = FromDegree + (toDegree - fromDegree) * interpolatedTime;  // 旋轉(zhuǎn)角度（angle） 
    final float centerX = mCenterX; 
    final float centerY = mCenterY; 
    final Matrix matrix = t.getMatrix(); 
    if (degrees <= -76.0f) { 
      degrees = -90.0f; 
      mCamera.save(); 
      mCamera.rotateY(degrees); // 旋轉(zhuǎn) 
      mCamera.getMatrix(matrix); 
      mCamera.restore(); 
    } else if (degrees >= 76.0f) { 
      degrees = 90.0f; 
      mCamera.save(); 
      mCamera.rotateY(degrees); 
      mCamera.getMatrix(matrix); 
      mCamera.restore(); 
    } else { 
      mCamera.save(); 
      mCamera.translate(0, 0, centerX); // 位移x 
      mCamera.rotateY(degrees); 
      mCamera.translate(0, 0, -centerX); 
      mCamera.getMatrix(matrix); 
      mCamera.restore(); 
    } 
    matrix.preTranslate(-centerX, -centerY); 
    matrix.postTranslate(centerX, centerY); 
  } 
}

然后，實(shí)例化Rotate3D的旋轉(zhuǎn)方向

public void initAnimation() { 
  // 獲取旋轉(zhuǎn)中心 
  DisplayMetrics dm = new DisplayMetrics(); 
  dm = getResources().getDisplayMetrics(); 
  mCenterX = dm.widthPixels / 2; 
  mCenterY = dm.heightPixels / 2; 
  // 定義旋轉(zhuǎn)方向 
  int duration = 1000; 
  lQuest1Animation = new Rotate3D(0, -90, mCenterX, mCenterY);  // 下一頁(yè)的【question1】旋轉(zhuǎn)方向（從0度轉(zhuǎn)到-90，參考系為水平方向?yàn)?度） 
  lQuest1Animation.setFillAfter(true); 
  lQuest1Animation.setDuration(duration); 
  lQuest2Animation = new Rotate3D(90, 0, mCenterX, mCenterY);   // 下一頁(yè)的【question2】旋轉(zhuǎn)方向（從90度轉(zhuǎn)到0，參考系為水平方向?yàn)?度）（起始第一題） 
  lQuest2Animation.setFillAfter(true); 
  lQuest2Animation.setDuration(duration); 
  rQuest1Animation = new Rotate3D(0, 90, mCenterX, mCenterY);   // 上一頁(yè)的【question1】旋轉(zhuǎn)方向（從0度轉(zhuǎn)到90，參考系為水平方向?yàn)?度） 
  rQuest1Animation.setFillAfter(true); 
  rQuest1Animation.setDuration(duration); 
  rQuest2Animation = new Rotate3D(-90, 0, mCenterX, mCenterY);  // 上一頁(yè)的【question2】旋轉(zhuǎn)方向（從-90度轉(zhuǎn)到0，參考系為水平方向?yàn)?度） 
  rQuest2Animation.setFillAfter(true); 
  rQuest2Animation.setDuration(duration); 
}

2、Activity

首先，定義兩個(gè)布局文件，用于旋轉(zhuǎn)的畫(huà)面切換

main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  android:id="@+id/layout_main" 
  android:layout_width="fill_parent" 
  android:layout_height="wrap_content"       
  android:orientation="vertical"> 
... 
</LinearLayout>

next.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  android:id="@+id/layout_next" 
  android:layout_width="fill_parent" 
  android:layout_height="wrap_content"       
  android:orientation="vertical"> 
... 
</LinearLayout>

限于篇幅，完整布局文件請(qǐng)?jiān)斠?jiàn)源碼 ^_^

然后，初始化兩個(gè)旋轉(zhuǎn)的布局文件資源

private void initMain(){ 
    setContentView(R.layout.main); 
  layoutmain = (LinearLayout)findViewById(R.id.layout_main); 
  btn_MainLast = (Button)findViewById(R.id.main_last); 
  btn_MainNext = (Button)findViewById(R.id.main_next); 
  btn_MainLast.setOnClickListener(listener); 
  btn_MainNext.setOnClickListener(listener); 
} 
private void initNext(){ 
    setContentView(R.layout.next); 
  layoutnext = (LinearLayout)findViewById(R.id.layout_next); 
  btn_NextLast = (Button)findViewById(R.id.next_last); 
  btn_NextNext = (Button)findViewById(R.id.next_next); 
  btn_NextLast.setOnClickListener(listener); 
  btn_NextNext.setOnClickListener(listener); 
}

最后，設(shè)置布局文件中的按鈕監(jiān)聽(tīng)事件，響應(yīng)3D旋轉(zhuǎn)動(dòng)畫(huà)和方向

private View.OnClickListener listener = new View.OnClickListener() { 
  @Override 
  public void onClick(View v) { 
    switch (v.getId()) { 
    case R.id.main_last:  // 上一頁(yè) 
      layoutmain.startAnimation(lQuest1Animation);  // 當(dāng)前頁(yè)向左旋轉(zhuǎn)（0，-90） 
      initNext(); 
      layoutnext.startAnimation(lQuest2Animation);  // 下一頁(yè)向左旋轉(zhuǎn)（90, 0） 
      break; 
    case R.id.main_next:  // 下一頁(yè) 
      layoutmain.startAnimation(rQuest1Animation);  // 當(dāng)前頁(yè)向右旋轉(zhuǎn)（0，90） 
      initNext(); 
      layoutnext.startAnimation(rQuest2Animation);  // 下一頁(yè)向右旋轉(zhuǎn)（-90, 0） 
      break; 
    case R.id.next_last: 
      layoutnext.startAnimation(lQuest1Animation); 
      initMain(); 
      layoutmain.startAnimation(lQuest2Animation); 
      break; 
    case R.id.next_next: 
      layoutnext.startAnimation(rQuest1Animation); 
      initMain(); 
      layoutmain.startAnimation(rQuest2Animation); 
      break; 
    } 
  } 
};

完整實(shí)例代碼代碼點(diǎn)擊此處本站下載。

希望本文所述對(duì)大家Android程序設(shè)計(jì)有所幫助。

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