基于Android實(shí)現(xiàn)3D翻頁效果

更新時(shí)間：2022年05月10日 08:17:30 作者：楊先生

這篇文章主要為大家詳細(xì)介紹了基于Android實(shí)現(xiàn)3D翻頁效果的具體代碼，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

最近做了一個(gè)簡單的3D效果翻頁特效，先說說我的思路吧，首先我這個(gè)翻頁效果并不是兩個(gè)Activity之間的跳轉(zhuǎn)，而是在同一個(gè)activity類切換不同的view而已。我現(xiàn)在的做法是單擊一個(gè)button然后Gone當(dāng)前的布局，然后把需要呈現(xiàn)的布局visible，在隱藏當(dāng)前布局的時(shí)候啟動(dòng)動(dòng)畫，然后給動(dòng)畫添加監(jiān)聽，在動(dòng)畫結(jié)束時(shí)開始另外一個(gè)view的入場動(dòng)畫就行了。
下面來看下我的主頁面的布局文件：

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:id="@+id/container" 
 android:layout_width="fill_parent" 
 android:layout_height="fill_parent" > 
 
 <include 
 android:layout_width="fill_parent" 
 android:layout_height="fill_parent" 
 layout="@layout/layout2" /> 
 
 <include 
 android:layout_width="fill_parent" 
 android:layout_height="fill_parent" 
 layout="@layout/layout1" /> 
 
</FrameLayout>

我這個(gè)布局文件使用<include>標(biāo)簽包含了另外2個(gè)布局文件，這些布局文件才是呈現(xiàn)數(shù)據(jù)的，下面是另外2個(gè)布局文件：

layout1:

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:background="@drawable/test1" 
 android:orientation="vertical" 
 android:id="@+id/container1" 
 > 
 
 <Button 
 android:id="@+id/bt_towhile" 
 android:layout_width="wrap_content" 
 android:layout_height="wrap_content" 
 android:layout_gravity="center" 
 android:text="白色" /> 
 
</LinearLayout>

layout2:

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 android:id="@+id/container2" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:background="@drawable/test2" 
 android:orientation="vertical" > 
 
 <Button 
 android:id="@+id/bt_toblack" 
 android:layout_width="wrap_content" 
 android:layout_height="wrap_content" 
 android:layout_gravity="center" 
 android:text="黑色" /> 
 
</LinearLayout>

我這里只是舉個(gè)例子并沒有放什么實(shí)際的類容，只是放了2個(gè)button，當(dāng)我點(diǎn)擊其中一個(gè)跳轉(zhuǎn)到另外一個(gè)layout。

有了布局文件那我們就開始要實(shí)現(xiàn)功能了，我們的想法是點(diǎn)擊按鈕的時(shí)候開始一個(gè)動(dòng)畫等動(dòng)畫結(jié)束時(shí)再開啟另外一個(gè)動(dòng)畫并隱藏和展示layout1和layout2。

下面是我寫的一個(gè)動(dòng)畫工具類源碼：

package com.test.view; 
 
import android.view.View; 
import android.view.ViewGroup; 
import android.view.animation.Animation; 
import android.view.animation.DecelerateInterpolator; 
 
public class RotateAnimationUtil { 
 
 private ViewGroup context; 
 
 private View[] views; 
 
 public RotateAnimationUtil(ViewGroup context, View... views) { 
 super(); 
 this.context = context; 
 this.views = views; 
 } 
 
 /** 
 * 應(yīng)用自定義的Rotate3DAnimation動(dòng)畫 
 * 
 * @param flag 
 *  當(dāng)前控件的順序坐標(biāo) 
 * @param startDegress 
 *  開始的角度 
 * @param endDegress 
 *  結(jié)束的角度 
 */ 
 public void applyRotateAnimation(int flag, float startDegress, 
  float endDegress) { 
 final float centerX = context.getWidth() / 2.0f; 
 final float centerY = context.getHeight() / 2.0f; 
 
 Rotate3DAnimation rotate = new Rotate3DAnimation(startDegress, 
  endDegress, centerX, centerY, 310.0f, true); 
 rotate.setDuration(1000); 
 rotate.setFillAfter(false); 
 rotate.setInterpolator(new DecelerateInterpolator()); 
 
 rotate.setAnimationListener(new DisplayNextView(flag)); 
 context.startAnimation(rotate); 
 } 
 
 private final class DisplayNextView implements Animation.AnimationListener { 
 
 private final int mFlag; 
 
 private DisplayNextView(int flag) { 
  mFlag = flag; 
 } 
 
 public void onAnimationStart(Animation animation) { 
 
 } 
 
 // 動(dòng)畫結(jié)束 
 
 public void onAnimationEnd(Animation animation) { 
  context.post(new SwapViews(mFlag)); 
 } 
 
 public void onAnimationRepeat(Animation animation) { 
 
 } 
 } 
 
 /** 
 * 新開一個(gè)線程動(dòng)畫結(jié)束后再開始一次動(dòng)畫效果實(shí)現(xiàn)翻屏特效 
 * 
 * @author yangzhiqiang 
 * 
 */ 
 private final class SwapViews implements Runnable { 
 
 private final int mFlag; 
 
 public SwapViews(int mFlag) { 
  this.mFlag = mFlag; 
 } 
 
 public void run() { 
  final float centerX = context.getWidth() / 2.0f; 
  final float centerY = context.getHeight() / 2.0f; 
  Rotate3DAnimation rotation; 
  if (mFlag > -1) { 
  views[0].setVisibility(View.GONE); 
  views[1].setVisibility(View.VISIBLE); 
  views[1].requestFocus(); 
  rotation = new Rotate3DAnimation(270, 360, centerX, centerY, 
   310.0f, false); 
  } else { 
  views[1].setVisibility(View.GONE); 
  views[0].setVisibility(View.VISIBLE); 
  views[0].requestFocus(); 
  rotation = new Rotate3DAnimation(90, 0, centerX, centerY, 
   310.0f, false); 
  } 
  rotation.setDuration(1000); 
  rotation.setFillAfter(false); 
  rotation.setInterpolator(new DecelerateInterpolator()); 
  // 開始動(dòng)畫 
  context.startAnimation(rotation); 
 
 } 
 
 } 
 
}

解釋一下這個(gè)類的構(gòu)造方法：

public RotateAnimationUtil(ViewGroup context, View... views) { 
 super(); 
 this.context = context; 
 this.views = views; 
 }

有2個(gè)參數(shù)，第一個(gè)參數(shù)就是我們的主布局頁面的FrameLayout，第2個(gè)參數(shù)就是我們要進(jìn)行動(dòng)畫切換的2個(gè)子layout，我這使用的是一個(gè)可變長參數(shù)只是為了方便而已。

public void applyRotateAnimation(int flag, float startDegress,float endDegress)方法第一個(gè)參數(shù)是標(biāo)記當(dāng)前是第是從哪個(gè)個(gè)layout跳轉(zhuǎn)，因外我們必須知道當(dāng)前開始跳轉(zhuǎn)的layout才能推算角度。
下面是我自定義動(dòng)畫的源碼：

package com.test.view; 
 
import android.graphics.Camera; 
import android.graphics.Matrix; 
import android.view.animation.Animation; 
import android.view.animation.Transformation; 
 
public class Rotate3DAnimation extends Animation { 
 
 private final float mFormDegress; 
 
 private final float mToDegress; 
 
 private final float mCenterX; 
 
 private final float mCenterY; 
 
 /** 
 * 控制z軸的一個(gè)常量值,主要是控制動(dòng)畫的升降距離 
 */ 
 private final float mDepthz; 
 
 /** 
 * 控制z軸是像上移動(dòng)還是向下移動(dòng),從而實(shí)現(xiàn)升降效果 
 */ 
 private final boolean mReverse; 
 
 private Camera mCamera; 
 
 public Rotate3DAnimation(float formDegress, float toDegress, float centerX, 
  float centerY, float depthz, boolean reverse) { 
 super(); 
 this.mFormDegress = formDegress; 
 this.mToDegress = toDegress; 
 this.mCenterX = centerX; 
 this.mCenterY = centerY; 
 this.mDepthz = depthz; 
 this.mReverse = reverse; 
 } 
 
 @Override 
 public void initialize(int width, int height, int parentWidth, 
  int parentHeight) { 
 super.initialize(width, height, parentWidth, parentHeight); 
 mCamera = new Camera(); 
 } 
 
 /** 
 * interpolatedTime 取值范圍是0-1之間當(dāng)每次，當(dāng)動(dòng)畫啟動(dòng)后會(huì)系統(tǒng)會(huì)不停的調(diào)用applyTransformation方法， 
 * 并改變interpolatedTime的值 
 */ 
 @Override 
 protected void applyTransformation(float interpolatedTime, Transformation t) { 
 final float formDegress = mFormDegress; 
 // 通過差點(diǎn)值計(jì)算出轉(zhuǎn)變的角度 
 float degress = formDegress 
  + ((mToDegress - formDegress) * interpolatedTime); 
 final float centerX = mCenterX; 
 final float centerY = mCenterY; 
 final Camera camera = mCamera; 
 
 // 得到當(dāng)前矩陣 
 Matrix matrix = t.getMatrix(); 
 // 報(bào)錯(cuò)當(dāng)前屏幕的狀態(tài) 
 camera.save(); 
 // 判斷是降還是升 
 if (mReverse) { 
  // 正向改變Z軸角度 
  camera.translate(0.0f, 0.0f, mDepthz * interpolatedTime); 
 } else { 
  // 反向改變Z軸角度 
  camera.translate(0.0f, 0.0f, mDepthz * (1.0f - interpolatedTime)); 
 } 
 // 旋轉(zhuǎn)Y軸角度 
 camera.rotateY(degress); 
 // 把當(dāng)前改變后的矩陣信息復(fù)制給Transformation的Matrix 
 camera.getMatrix(matrix); 
 // 根據(jù)改變后的矩陣信息從新恢復(fù)屏幕 
 camera.restore(); 
 
 // 讓動(dòng)畫在屏幕中間運(yùn)行 
 matrix.preTranslate(-centerX, -centerY); 
 matrix.postTranslate(centerX, centerY); 
 } 
}

如果你不需要沉降效果那么你把下面的代碼刪除掉即可:

if (mReverse) { 
  // 正向改變Z軸角度 
  camera.translate(0.0f, 0.0f, mDepthz * interpolatedTime); 
 } else { 
  // 反向改變Z軸角度 
  camera.translate(0.0f, 0.0f, mDepthz * (1.0f - interpolatedTime)); 
 }

好了核心代碼已經(jīng)上完，下面是主界面代碼：

package com.test.rotateanimation; 
 
import android.app.Activity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.Button; 
import android.widget.FrameLayout; 
import android.widget.LinearLayout; 
 
import com.test.view.RotateAnimationUtil; 
 
public class MainActivity extends Activity { 
 
 private FrameLayout container; 
 
 private LinearLayout container1; 
 
 private LinearLayout container2; 
 
 private RotateAnimationUtil rotateAnimationUtil; 
 
 private Button bt_towhile; 
 
 private Button bt_toblack; 
 
 @Override 
 public void onCreate(Bundle savedInstanceState) { 
 super.onCreate(savedInstanceState); 
 setContentView(R.layout.activity_main); 
 initView(); 
 
 bt_towhile.setOnClickListener(new View.OnClickListener() { 
 
  @Override 
  public void onClick(View v) { 
  rotateAnimationUtil.applyRotateAnimation(1, 0, 90); 
  } 
 }); 
 bt_toblack.setOnClickListener(new View.OnClickListener() { 
 
  @Override 
  public void onClick(View v) { 
  rotateAnimationUtil.applyRotateAnimation(-1, 0, -90); 
  } 
 }); 
 
 // 設(shè)置當(dāng)前View控件的緩存 
 container 
  .setPersistentDrawingCache(ViewGroup.PERSISTENT_ANIMATION_CACHE); 
 } 
 
 private void initView() { 
 container = (FrameLayout) findViewById(R.id.container); 
 bt_toblack = (Button) findViewById(R.id.bt_toblack); 
 bt_towhile = (Button) findViewById(R.id.bt_towhile); 
 
 container1 = (LinearLayout) findViewById(R.id.container1); 
 container2 = (LinearLayout) findViewById(R.id.container2); 
 
 rotateAnimationUtil = new RotateAnimationUtil(container, container1, 
  container2); 
 } 
 
 @Override 
 public boolean onCreateOptionsMenu(Menu menu) { 
 getMenuInflater().inflate(R.menu.activity_main, menu); 
 return true; 
 } 
 
}

下面是運(yùn)行效果，剪切效果不好，呵呵.