android引导页 旋转的效果

Posted 2022-12-05 wuhongqi0012

一个类似小车一直在往前开的旋转式动画效果。

package com.devdiv.test.ui_test_viewpager;


import java.util.ArrayList;

import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.animation.AnimationSet;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.Window;
import android.widget.ImageView;

public class UI_Test_ViewPagerActivity extends Activity 
	
	private MyViewPager mViewPager;
	private ArrayList<View> mPageViews;
	private ImageView mImageView;
	private ImageView[] mImageViews;
	
	private ViewGroup mainViewGroup;
	private ViewGroup indicatorViewGroup;
	
	LayoutInflater mInflater;
	
	private ImageView iv_1;
	private ImageView iv_2;
	private ImageView iv_3;
	private Bitmap bmp;
	private Bitmap bmp2;
	private Bitmap bmp3;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
       
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        
        mInflater = getLayoutInflater();
        
        mPageViews = new ArrayList<View>();
        View view1 = mInflater.inflate(R.layout.item01, null);
        View view2 = mInflater.inflate(R.layout.item02, null);
        View view3 = mInflater.inflate(R.layout.item03, null);
        mPageViews.add(view1);
        mPageViews.add(view2);
        mPageViews.add(view3);
        
        iv_1 = (ImageView) view1.findViewById(R.id.iv_1);
        iv_2 = (ImageView) view2.findViewById(R.id.iv_2);
        iv_3 = (ImageView) view3.findViewById(R.id.iv_3);
        mPageViews.add(mInflater.inflate(R.layout.item04, null));
        mPageViews.add(mInflater.inflate(R.layout.item05, null));
        mPageViews.add(mInflater.inflate(R.layout.item06, null));
        
        mImageViews = new ImageView[mPageViews.size()];
        
        mainViewGroup = (ViewGroup) mInflater.inflate(R.layout.main, null);
        
        mViewPager = (MyViewPager) mainViewGroup.findViewById(R.id.myviewpager);
        indicatorViewGroup = (ViewGroup) mainViewGroup.findViewById(R.id.mybottomviewgroup);
        for (int i = 0; i < mImageViews.length; i++) 
        	mImageView = new ImageView(UI_Test_ViewPagerActivity.this);  
        	mImageView.setLayoutParams(new LayoutParams(20,20));  
        	mImageView.setPadding(20, 0, 20, 0);  
        	
        	if (i == 0) 
        		mImageView.setBackgroundResource(R.drawable.page_indicator_focused);				
			 else 
				mImageView.setBackgroundResource(R.drawable.page_indicator);
			
			
        	mImageViews[i] = mImageView;
        	
        	indicatorViewGroup.addView(mImageViews[i]);
		
        
        setContentView(mainViewGroup);
        
        
        mViewPager.setAdapter(new MyPagerAdapter());
        mViewPager.setOnPageChangeListener(new OnPageChangeListener() 
			
			@Override
			public void onPageSelected(int arg0) 
				// TODO Auto-generated method stub
				for (int i = 0; i < mImageViews.length; i++) 
					if(i == arg0) 
						mImageViews[i].setBackgroundResource(R.drawable.page_indicator_focused);
					 else 
						mImageViews[i].setBackgroundResource(R.drawable.page_indicator);
					
				
			
			
			@Override
			public void onPageScrolled(int position, float arg1, int arg2) 
			    Log.e("onPageScrolled", "arg1:"+arg1 +"|arg2:" + arg2);
			    if (position == 0)
			        rotate(iv_1, -(90*arg1), bmp);
			        rotate(iv_2, 90 -(90*arg1), bmp2);
			    else if (position == 1)
			        rotate(iv_2, -(90*arg1), bmp2);
			        rotate(iv_3, 90 -(90*arg1), bmp3);
			    
			
			
			@Override
			public void onPageScrollStateChanged(int arg0) 
			    
			
		);
        
        bmp = BitmapFactory.decodeResource(getResources(), R.drawable.lp1);
        bmp2 = BitmapFactory.decodeResource(getResources(), R.drawable.lp2);
        bmp3 = BitmapFactory.decodeResource(getResources(), R.drawable.lp3);
        iv_1.setImageBitmap(bmp);
        iv_2.setImageBitmap(bmp2);
        iv_3.setImageBitmap(bmp3);
        rotate(iv_2, 90, bmp2);
        rotate(iv_3, 90, bmp3);
    
    
    public void rotate(ImageView iv, float degree, Bitmap bmp)
        Matrix matrix = new Matrix();
        //选择角度 饶(0,0)点选择 正数顺时针 负数逆时针 中心旋转
        matrix.setRotate(degree ,bmp.getWidth()/2,bmp.getHeight());
        Bitmap createBmp = Bitmap.createBitmap(bmp.getWidth(), bmp.getHeight(), bmp.getConfig());
        Canvas canvas = new Canvas(createBmp);
        Paint paint = new Paint();
        canvas.drawBitmap(bmp, matrix, paint);
        iv.setImageBitmap(createBmp);
    
    
    class MyPagerAdapter extends PagerAdapter 

    	@Override  
        public int getCount()   
            return mPageViews.size();  
          
  
        @Override  
        public boolean isViewFromObject(View arg0, Object arg1)   
            return arg0 == arg1;  
          
  
        @Override  
        public int getItemPosition(Object object)   
            return super.getItemPosition(object);  
          
  
        @Override  
        public void destroyItem(View arg0, int arg1, Object arg2)   
            ((ViewPager) arg0).removeView(mPageViews.get(arg1));  
          
  
        @Override  
        public Object instantiateItem(View arg0, int arg1)   
            ((ViewPager) arg0).addView(mPageViews.get(arg1));  
            return mPageViews.get(arg1);  
          
  
        @Override  
        public void restoreState(Parcelable arg0, ClassLoader arg1)   
  
          
  
        @Override  
        public Parcelable saveState()   
            return null;  
          
  
        @Override  
        public void startUpdate(View arg0)   
  
          
  
        @Override  
        public void finishUpdate(View arg0)   
  
         
    	
    
    

Demo源码 http://download.csdn.net/detail/wuhongqi0012/8511877