Android开场动画类完整实现代码

本文所述实例为在android中开起开场动画类，已封装好，进行android开发的朋友可使用。在这个类中，你可以：设置开场动画的图片资源、返回下一个要启动的Activity、显示开场动画、执行耗时的操作、创建启动时的界面Layout、设置屏幕的方向。默认是竖屏、开场动画的图片资源类。封装了图片、播放时间、开始时的透明程度等。

具体实现代码如下：

package com.lurencun.cfuture09.androidkit.ui;
import java.io.Serializable;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.AlphaAnimation;
import android.widget.frameLayout;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import com.lurencun.cfuture09.androidkit.thread.HandlerFactory;
public abstract class IntroActivity extends Activity {
 private static final String FLAG_RESOURCE = "FLAG_RESOURCE";
 
 private static final byte BACKGROUND_FINISH = 0x01;
 
 private static final byte FRONTGROUND_FINISH = 0x10;
 
 private static final int INTRO_PLAY = 0;
 
 private List mResources;
 
 private int mBackgroundColor = 0xFFFFFFFF;
 
 private Handler mUiHandler;
 
 private ImageView mIntroImage;
 
 private int mOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 init();
 runonMainThread();
 this.requestWindowFeature(Window.FEATURE_NO_TITLE);
 this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
  WindowManager.LayoutParams.FLAG_FULLSCREEN);
 this.setRequestedOrientation(mOrientation);
 this.setContentView(createLayout());
 setIntroResources(mResources);
 startonBackground();
 showIntro();
 }
 private void init() {
 mResources = new ArrayList();
 mUiHandler = new UIHandler(this);
 }
 
 protected abstract void setIntroResources(List resources);
 
 protected abstract Class nextActivity();
 
 protected void showIntro() {
 int delayTime = 0;
 for (final IntroImgResource resource : mResources) {
  Message msg = new Message();
  msg.what = INTRO_PLAY;
  Bundle data = new Bundle();
  data.putSerializable(FLAG_RESOURCE, resource);
  msg.setData(data);
  mUiHandler.sendMessageDelayed(msg, delayTime);
  delayTime += resource.playerTime;
 }
 mUiHandler.sendEmptyMessageDelayed(FRONTGROUND_FINISH, delayTime);
 }
 
 private void startonBackground() {
 HandlerFactory.newHandlerInOtherThread("intro_bg").post(
  new Runnable() {
   @Override
   public void run() {
   runonBackground();
   mUiHandler.sendEmptyMessage(0x1);
   }
  });
 }
 
 private View createLayout() {
 frameLayout layout = new frameLayout(this);
 ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(
  LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
 layout.setLayoutParams(layoutParams);
 layout.setBackgroundColor(getBackgroundColor());
 mIntroImage = new ImageView(this);
 frameLayout.LayoutParams params = new frameLayout.LayoutParams(
  frameLayout.LayoutParams.FILL_PARENT,
  frameLayout.LayoutParams.FILL_PARENT);
 params.gravity = Gravity.CENTER;
 layout.addView(mIntroImage, params);
 return layout;
 }
 
 public int getBackgroundColor() {
 return mBackgroundColor;
 }
 
 public void setBackgroundColor(int backgroundColor) {
 this.mBackgroundColor = backgroundColor;
 }
 
 public int getmOrientation() {
 return mOrientation;
 }
 
 public void setmOrientation(int mOrientation) {
 this.mOrientation = mOrientation;
 }
 
 protected void runonMainThread() {
 }
 
 protected void runonBackground() {
 }
 protected static class UIHandler extends Handler {
 
 private int isWaiting = 0;
 private WeakReference activity;
 public UIHandler(IntroActivity activity) {
  this.activity = new WeakReference(activity);
 }
 public void handleMessage(android.os.Message msg) {
  if (msg.what == INTRO_PLAY) {
  IntroImgResource resource = (IntroImgResource) msg.getData()
   .getSerializable(FLAG_RESOURCE);
  AlphaAnimation animation = new AlphaAnimation(
   resource.startAlpha, 1f);
  animation.setDuration(resource.playerTime);
  IntroActivity intro = activity.get();
  if (intro != null) {
   if (resource.isExpand) {
   intro.mIntroImage.setScaleType(ScaleType.FIT_XY);
   } else {
   intro.mIntroImage.setScaleType(ScaleType.CENTER);
   }
   intro.mIntroImage.setImageResource(resource.mResId);
   intro.mIntroImage.startAnimation(animation);
  }
  return;
  }
  if (msg.what == BACKGROUND_FINISH || msg.what == FRONTGROUND_FINISH) {
  isWaiting |= msg.what;
  // 当后台或前台的任务未完成时，不执行Activity的跳转。
  if (isWaiting == (BACKGROUND_FINISH | FRONTGROUND_FINISH)) {
   IntroActivity intro = activity.get();
   if (intro != null) {
   intro.startActivity(new Intent(intro, intro
    .nextActivity()));
   intro.finish();
   }
  }
  }
 };
 };
 
 protected class IntroImgResource implements Serializable {
 
 private static final long serialVersionUID = -2257252088641281804L;
 
 private int mResId;
 
 private int playerTime;
 
 private float startAlpha;
 
 private boolean isExpand;
 
 public IntroImgResource(int mResId, int playerTime, float startAlpha, boolean isExpand) {
  super();
  this.mResId = mResId;
  this.playerTime = playerTime;
  this.startAlpha = startAlpha;
  this.isExpand = isExpand;
 }
 
 public int getmResId() {
  return mResId;
 }
 
 public void setmResId(int mResId) {
  this.mResId = mResId;
 }
 
 public int getPlayerTime() {
  return playerTime;
 }
 
 public void setPlayerTime(int playerTime) {
  this.playerTime = playerTime;
 }
 
 public float getStartAlpha() {
  return startAlpha;
 }
 
 public void setStartAlpha(float startAlpha) {
  this.startAlpha = startAlpha;
 }
 
 public boolean isExpand() {
  return isExpand;
 }
 
 public void setExpand(boolean isExpand) {
  this.isExpand = isExpand;
 }
 }
}

本实例配备了详细的注释说明，读者可以在了解程序代码功能的基础上进行个性化的修改，打造出自己独具个性的Android开场动画！