Android 图片在view中调用Animation动画移动

[lichking8384]

为什么从(0,0)到(100,100)是预期的效果，而从(100,100)到(0,0),高手求救啊！！代码如下。

package com.test.AnimationDemo;
import java.io.InputStream;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.drawable.BitmapDrawable;
import android.os.AsyncTask;
import android.os.Handler;
import android.os.Message;
import android.os.SystemClock;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.Animation;
import android.view.animation.Transformation;
import android.view.animation.TranslateAnimation;

/**
 * 2010-09-XX
 * 
 * @author Chunter
 * 
 */
public class DemonView extends View {

	InputStream inputSteam = this.getContext().getResources()
			.openRawResource(R.drawable.icon);
	BitmapDrawable bmpDraw = new BitmapDrawable(inputSteam);

	float startX, startY, aimX, aimY;
	int msgTp = 1;

	public DemonView(Context context, AttributeSet attrs) {
		super(context, attrs);
		new T1().execute(new Object());
	}

	Animation mCurrentAnimation = null;
	Transformation mTransformation = new Transformation();

	Handler myHandler = new Handler() {
		public synchronized void handleMessage(Message msg) {
			switch (msg.what) {
			case 1:
				initAndStartAmination(0, 0, 200, 200, bmpDraw); //ok
				;
				break;
			case 2:
				initAndStartAmination(100.0f, 100.0f, 0, 0, bmpDraw); //这里就会有问题，实际没有移动到(0,0)
			}
			super.handleMessage(msg);
		}
	};

	public synchronized void onDraw(Canvas canvas) {
		// this.initalAmination(int startX,int start Y)
		this.makeBallMove(canvas, this.bmpDraw);
	}

	public void initAndStartAmination(float startX, float startY, float aimX,
			float aimY, BitmapDrawable bmpDraw) {
		Animation anim = new TranslateAnimation(startX, aimX, startY
				+ bmpDraw.getBitmap().getHeight(), aimY
				+ bmpDraw.getBitmap().getHeight());

		this.startX = startX;
		this.startY = startY;
		this.aimX = aimX;
		this.aimY = aimY;
		this.mTransformation = new Transformation();

		anim.setDuration(1000); // 1s
		anim.setInterpolator(new AccelerateInterpolator(1.0f));
		anim.setFillAfter(true);
		startAnimation(anim);
	}

	public void startAnimation(Animation animation) {
		// animation.setStartTime(animation.);
		setAnimation(animation);
		invalidate();
	}

	public void setAnimation(Animation animation) {
		mCurrentAnimation = animation;
		if (animation != null) {
			animation.reset();
		}
	}

	public void makeBallMove(Canvas canvas, BitmapDrawable bmpDraw) {

		long curTime = SystemClock.uptimeMillis();
		if (mCurrentAnimation == null) {

			canvas.drawBitmap(bmpDraw.getBitmap(), 0, 0, null);
		} else {
			if (!mCurrentAnimation.isInitialized()) // initialize animation

				mCurrentAnimation.initialize(0, 0, 0, 0);

			boolean more = mCurrentAnimation.getTransformation(curTime,
					mTransformation);

			if (more) {

				Matrix m = canvas.getMatrix();

				canvas.setMatrix(mTransformation.getMatrix());

				canvas.drawBitmap(bmpDraw.getBitmap(), startX, startY, null);

				canvas.setMatrix(m);

				this.invalidate();

			} else {

				// canvas.drawBitmap(bmpDraw.getBitmap(), aimX, aimY, null);
				this.mCurrentAnimation = null;
				msgTp = (msgTp + 1) % 2 == 0 ? 2 : 1;

			}

		}

	}

	private class T1 extends AsyncTask {
		Object lock = new Object();

		@Override
		protected Object doInBackground(Object... arg0) {
			while (true) {
				try {
					Thread.sleep(1999);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				if (mCurrentAnimation == null) {
					messageSend(msgTp);
				}

			}

		}

		protected void onPostExecute(Object obj) {
			// do Nothing
		}
	}

	/**
	 * notify UI Thread to refresh the ChessBoard
	 * 
	 * @param i
	 */
	private synchronized void messageSend(int i) {
		Message message = new Message();
		message.what = i;
		myHandler.sendMessage(message);
	}

}

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:background="@android:color/white">

	<com.test.AnimationDemo.DemonView android:id="@+id/animotion_test" android:layout_width="match_parent"
		android:layout_height="match_parent" tileSize="24"/>
	
	<RelativeLayout
		android:layout_width="match_parent"
		android:layout_height="match_parent">
		<TextView
			android:id="@+id/text"
			android:visibility="visible"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:layout_centerHorizontal="true"
			android:layout_centerVertical="true"
			android:textColor="#ff0000"
			android:textSize="24sp"
			/>
	</RelativeLayout>

</FrameLayout>

[yyy025025025]

看代码中这句话

Animation anim = new TranslateAnimation(startX, aimX, startY
+ bmpDraw.getBitmap().getHeight(), aimY
+ bmpDraw.getBitmap().getHeight());

会设置animX和animY的位置为 0+bmpDraw.getBitmap().getHeight()

那么在图片高度不为0的情况下，就不会移动到（0，0）点了。

[lichking8384]

(0,0)到(100,100)时，如果去掉这句话，图片会从屏幕外飞进来。
关键是，(100,100)飞到(0,0)时，大约图片飞到(50,50)就会结束。。这是为什么。。。

[lichking8384]

[Quote=引用 1 楼 yyy025025025 的回复:]
看代码中这句话

Animation anim = new TranslateAnimation(startX, aimX, startY
+ bmpDraw.getBitmap().getHeight(), aimY
+ bmpDraw.getBitmap().getHeight());

会设置animX和animY的位置为 0+bmpDraw.getBitmap().……
[/Quote]

如果我只想让图片从0,0飞到100,100再从100,100飞到0,0该怎么调呢。。。

[yyy025025025]

那就分情况了嘛

飞入时坐标是（50，50） 到 （100， 100）
Animation anim = new TranslateAnimation(startX, aimX, startY
+ bmpDraw.getBitmap().getHeight(), aimY
+ bmpDraw.getBitmap().getHeight());


飞出时坐标是（100， 100） 到（0，0）
Animation anim = new TranslateAnimation(startX, aimX, startY, aimY);

[lichking8384]

[Quote=引用 4 楼 yyy025025025 的回复:]
那就分情况了嘛

飞入时坐标是（50，50） 到 （100， 100）
Animation anim = new TranslateAnimation(startX, aimX, startY
+ bmpDraw.getBitmap().getHeight(), aimY
+ bmpDraw.getBitmap().getHeight());


飞出时坐标是（100， 100）……
[/Quote]
朋友，你好！！我有试过

Animation anim = new TranslateAnimation(100, 100, 0, 0);
大约到（50,50）时，动画结束了。。。

Animation anim = new TranslateAnimation(200, 200, 0, 0);
大约到（100,100）时，动画结束

也是就说只能走到两点连线的中间。。。
但是，如果起点为(0,0)的话，貌似正常。。无法理解

[new8899_]

看看先，现在我也在做个图片移动进入的动画，

[Ting_Ian]

我想问下假如我在view中放置了很多张图片,但是我想针对某一张图片做动画效果,请问怎么实现呢?