初学Android,图形图像之混合使用逐帧动画和补间动画(三十七)

下面例子混合使用了逐帧动画和补间动画，还有一个缺点，就是画面闪烁，一直没有找到解决办法

上面点击ImageView,上面的人物就开始走路跟移动

定义动画文件

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false">
  <item android:drawable="@drawable/one" android:duration="10" /> 
  <item android:drawable="@drawable/two" android:duration="10" /> 
  <item android:drawable="@drawable/three" android:duration="10" /> 
  <item android:drawable="@drawable/four" android:duration="10" /> 
  <item android:drawable="@drawable/five" android:duration="10" /> 
  <item android:drawable="@drawable/six" android:duration="10" /> 
  <item android:drawable="@drawable/seven" android:duration="10" /> 
  <item android:drawable="@drawable/eight" android:duration="10" /> 
  <item android:drawable="@drawable/nine" android:duration="10" /> 
  <item android:drawable="@drawable/ten" android:duration="10" /> 
  <item android:drawable="@drawable/eleven" android:duration="10" /> 
  <item android:drawable="@drawable/twelve" android:duration="10" /> 
  <item android:drawable="@drawable/thirteen" android:duration="10" /> 
  <item android:drawable="@drawable/fourteen" android:duration="10" /> 
  <item android:drawable="@drawable/fifteen" android:duration="10" /> 
  <item android:drawable="@drawable/sixteen" android:duration="10" /> 
  <item android:drawable="@drawable/seventeen" android:duration="10" /> 
  <item android:drawable="@drawable/eighteen" android:duration="10" /> 
  <item android:drawable="@drawable/nineteen" android:duration="10" /> 
  <item android:drawable="@drawable/twenty" android:duration="10" /> 
  <item android:drawable="@drawable/twentyone" android:duration="10" /> 
   <item android:drawable="@drawable/twentytwo" android:duration="10" /> 
  <item android:drawable="@drawable/twentythree" android:duration="10" /> 
  <item android:drawable="@drawable/twentyfour" android:duration="10" /> 
  <item android:drawable="@drawable/twentyfive" android:duration="10" /> 
  <item android:drawable="@drawable/twentysix" android:duration="10" /> 
  <item android:drawable="@drawable/twentyseven" android:duration="10" /> 
  <item android:drawable="@drawable/twentyeight" android:duration="10" /> 
  <item android:drawable="@drawable/twentynine" android:duration="10" /> 
  <item android:drawable="@drawable/thirty" android:duration="10" /> 
  <item android:drawable="@drawable/thirtyone" android:duration="10" /> 
  <item android:drawable="@drawable/thirtytwo" android:duration="10" /> 
  <item android:drawable="@drawable/thirtythree" android:duration="10" /> 
  <item android:drawable="@drawable/thirtyfour" android:duration="10" /> 
  <item android:drawable="@drawable/thirtyfive" android:duration="10" /> 
  <item android:drawable="@drawable/thirtysix" android:duration="10" /> 
</animation-list>

主界面引用动画

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" 
    android:background="#fff">
    <ImageView android:id="@+id/walk" android:layout_width="150dp" 
        android:layout_height="150dp" 
        android:background ="@anim/walk" /> 
</LinearLayout>

主界面代码

package WangLi.Graphics.Walk;

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;

public class Walk extends Activity {
	//记录行走人ImageView当前的位置
	private float curX = 0;
	private float curY = 30;
	//记录行走人ImageView下一个位置的坐标　
	float nextX = 0;
	float nextY = 0;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        //获取显示行走人的ImageView组件
        final ImageView imageView = (ImageView)findViewById(R.id.walk);
        final Handler handler = new Handler()
        {
        	public void handleMessage(Message msg)
        	{
        		if(msg.what == 0x123)
        		{
        			//横向上一直向右走
        			if(nextX > 320)
        			{
        				curX = nextX = 0;
        			}
        			else
        			{
        				nextX += 8;
        			}
        			
        			//纵向上随机上下走
        			nextY = curY + (float)(Math.random() * 10 - 5);
        			//设置显示行走人的ImageView位置发生位移改变
        			TranslateAnimation anim = new TranslateAnimation(curX,
        					nextX, 
        					curY, 
        					nextY);
        			
        			curX = nextX;
        			curY = nextY;
        			anim.setDuration(200);
        			anim.setFillEnabled(true);
        			//开始位移动画
        			imageView.startAnimation(anim);
        		}
        	}
        };
        final AnimationDrawable walk = (AnimationDrawable)imageView.getBackground();
        imageView.setOnClickListener(new OnClickListener()
        {
        	public void onClick(View v)
        	{
        		//开始播放人行走的逐帧动画
        		walk.start();
        		//通过定制器控制每0.2秒运行一次TanslateAnimation动画
        		new Timer().schedule(new TimerTask()
        		{
        			public void run()
        			{
        				handler.sendEmptyMessage(0x123);
        			}
        		}, 0, 200);
        	}
        });
    }
}