android 双击图片放大缩小

package com.szxys.doubleclike;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.provider.ContactsContract.CommonDataKinds.Im;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.ScaleAnimation;
import android.widget.ImageView;

public class DoubleClickActivity extends Activity {
	/** Called when the activity is first created. */
	private ImageView image;
	private Bitmap bitmap;
	private boolean isbig = false;
	private int count = 2;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		image = (ImageView) findViewById(R.id.image);
		bitmap = BitmapFactory
				.decodeResource(getResources(), R.drawable.girl_1);
		image.setBackgroundResource(R.drawable.girl_1);
		image.setOnClickListener(new clike());

	}

	private long sTime = 0;
	private long eTime = 0;
	private Drawable drawable;
	
	interface TimeListener{
		public long getCurrentTime();
	}
	class clike implements View.OnClickListener,  TimeListener{

		@Override
		public long getCurrentTime() {
			// TODO Auto-generated method stub
			return System.currentTimeMillis();
		}

		@Override
		public void onClick(View v) {
				// TODO Auto-generated method stub
				if(sTime!=0&&(getCurrentTime()-sTime>500)){
					sTime = 0;
					count=2;
				}
				if (!isbig) {
					--count;
					if (count > 0) {
						sTime = getCurrentTime();
						System.out.println(sTime + "--s--");
					}
					if (count == 0) {
						eTime = getCurrentTime();
						System.out.println(sTime + "--e--");
						if ((eTime - sTime) <= 500) {
							drawable = resizeImage(bitmap,
									bitmap.getWidth() * 4, bitmap.getHeight() * 4);
							image.setBackgroundDrawable(drawable);
							ScaleAnimation animation = new ScaleAnimation(0.25f, 1.0f, 0.25f, 1.0f,
									Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0f);
							animation.setDuration(500);
							animation.setAnimationListener(new Animation.AnimationListener() {
								@Override
								public void onAnimationStart(Animation animation) {
									// TODO Auto-generated method stub
								}
								
								@Override
								public void onAnimationRepeat(Animation animation) {
									// TODO Auto-generated method stub
								}
								
								@Override
								public void onAnimationEnd(Animation animation) {
									// TODO Auto-generated method stub
									isbig = true;
									sTime = 0;
									eTime = 0;
									count = 2;
								}
							});
							image.setAnimation(animation);
							System.out.println("----------haha--------------");
						}
					}
				}else{
					--count;
					if (count > 0) {
						sTime = getCurrentTime();
						System.out.println(sTime + "--s--");
					}
					if (count == 0) {
						eTime = getCurrentTime();
						System.out.println(sTime + "--e--");
						Drawable Tempdrawable = drawable;
						final Bitmap bitmap = ((BitmapDrawable)Tempdrawable).getBitmap();
						if ((eTime - sTime) <= 500) {
							drawable = resizeImage(bitmap,
									bitmap.getWidth()/4, bitmap.getHeight()/4);
							ScaleAnimation animation = new ScaleAnimation(1.0f, 0.25f, 1.0f, 0.25f,
									Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0f);
							animation.setDuration(500);
							animation.setAnimationListener(new Animation.AnimationListener() {
								@Override
								public void onAnimationStart(Animation animation) {
								}
								@Override
								public void onAnimationRepeat(Animation animation) {
								}
								@Override
								public void onAnimationEnd(Animation animation) {
									image.clearAnimation();
									image.setBackgroundDrawable(drawable);
									isbig = false;
									sTime = 0;
									eTime = 0;
									count = 2;
								}
							});
							image.setBackgroundDrawable(Tempdrawable);
							image.setAnimation(animation);
							System.out.println("----------haha--------------");
						}
					}
				}

			}

		}

	// 压缩图片到指定大小
	public static Drawable resizeImage(Bitmap bitmap, int w, int h) {
		Bitmap BitmapOrg = bitmap;
		int width = BitmapOrg.getWidth();
		int height = BitmapOrg.getHeight();
		int newWidth = w;
		int newHeight = h;
		float scaleWidth = ((float) newWidth) / width;
		float scaleHeight = ((float) newHeight) / height;
		Matrix matrix = new Matrix();
		matrix.postScale(scaleWidth, scaleHeight);
		Bitmap resizedBitmap = Bitmap.createBitmap(BitmapOrg, 0, 0, width,
				height, matrix, true);
		return new BitmapDrawable(resizedBitmap);

	}
}