自定义HorizontalScrollView模仿RadioGroup+Fragment+Viewpager的翻页与点击效果,效果完全一样

                                      

界面如图.有点粗陋,不要在意,只是充个数.

监听屏幕滑动,结合距离和滑动速度来判断翻页.

保证跟效果跟使用RadioGroup+ViewPager+Fragment+FragmentManagement的效果一样!

注意,可以跟上面的顶部分栏联动的喔,个人觉得很有用,特拿出来分享.~

首先,贴上自定义的HorizontalScrollview

/**
 * 翻页效果的水平滑动视图
 * @author  心動,即是不理性℃
 *
 */
public class PageScrollView extends HorizontalScrollView{
	private int childCount = 0;
	private ViewGroup ll_container = null;
	private int currentPage = 0;
	private ArrayList pointList = new ArrayList();

	public PageScrollView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		init();
	}

	public PageScrollView(Context context, AttributeSet attrs) {
		super(context, attrs);
		init();
	}

	public PageScrollView(Context context) {
		super(context);
		init();
	}

	private void init() {
		setHorizontalScrollBarEnabled(false);
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		super.onMeasure(widthMeasureSpec, heightMeasureSpec);
		retrieveChildInfo();
	}

	public void retrieveChildInfo() {
		ll_container = (ViewGroup) getChildAt(0);
		if (ll_container != null) {
			childCount = ll_container.getChildCount();
			for (int i = 0; i < childCount; i++) {
				if ((ll_container.getChildAt(i)).getWidth() > 0) {
					pointList.add((ll_container.getChildAt(i)).getLeft());
				}
			}
		}

	}

	private float downX=-1,downY=-1;
	private long downTime=0;
	@Override
	public boolean onTouchEvent(MotionEvent ev) {
		switch (ev.getAction()) {
		case MotionEvent.ACTION_DOWN:
			downX=ev.getRawX();
			downY=ev.getRawY();
			break;
		case MotionEvent.ACTION_MOVE:
			if(downX==-1||downY==-1||downTime==0){
				downX=ev.getRawX();
				downY=ev.getRawY();
				downTime=System.currentTimeMillis();
			}
			break;
		case MotionEvent.ACTION_UP:
		case MotionEvent.ACTION_CANCEL: 
			slidePage(judgeSlide(downX, downY,ev.getRawX(),ev.getRawY(),System.currentTimeMillis()-downTime,this.getContext()));
			downTime=0;
			return true;
		
		}
		return super.onTouchEvent(ev);
	}
	
	/**
	 * 关于翻页的判断.
	 * Last Modifi.. 161123
	 * @param x1
	 * @param y1
	 * @param x2
	 * @param y2
	 * @return -1←左,1→右,0-如如不動.
	 * 
	 */
	private int judgeSlide(float x1,float y1,float x2,float y2,long time,Context context){
		int ori=0;
//		if(Math.abs(y2-y1)timeGenkai?genkaiNormal:genkaiFast;
			if(x2-x1>genkai){
				ori= -1;
			}else if(x2-x1<-genkai){
				ori= 1;
			}
			android.util.Log.e("", "kyori:"+(x2-x1)+";time:"+time);
//		}
		return ori;
	}
	private final int genkaiNormal=Util.getScreenWidth(getContext())/4;
	private final long timeGenkai=60;
	private final int genkaiFast=16;

	/**
	 * 翻页
	 * @param ori 方向
	 */
	private void slidePage(int ori) {
		if(ori==0)
			smoothScrollTo(pointList.get(currentPage), 0);
		else if(ori==1){
			if (currentPage < childCount - 1) {
				currentPage++;
				smoothScrollTo(pointList.get(currentPage), 0);
			}
		}else if(ori==-1){
			if (currentPage > 0) {
				currentPage--;
				smoothScrollTo(pointList.get(currentPage), 0);
			}
		}

		if(scrollListener!=null)
			scrollListener.onPageScrolled(currentPage);
		
	}

	/**
	 * 跳转到指定的页面
	 * 
	 * @param page
	 * @return
	 */
	public boolean gotoPage(int page) {
		if (page > -1 && page < childCount) {
			smoothScrollTo(pointList.get(page), 0);
			currentPage = page;
			return true;
		}
		return false;
	}
	
	private OnPageScrolledListener scrollListener;
	public interface OnPageScrolledListener{
		void onPageScrolled(int currentPage);
	}
	public void setOnPageScrolledListener(OnPageScrolledListener scrollListener){
		this.scrollListener=scrollListener;
	}

	public void onPageScrolled() {
		scrollListener.onPageScrolled(currentPage);
	}
}

接着,看布局文件↓

现在,路已铺好,看怎么跑路的了

public class MainActivity extends Activity {
	private RadioButton rb1,rb2;
	private PageScrollView pageSv;
	private ArrayList list=new ArrayList();
	private BaseAdapter adapter;
	

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.main);
		rb1=(RadioButton) findViewById(R.id.rb1);
		rb2=(RadioButton) findViewById(R.id.rb2);
		rb1.setOnClickListener(mClicker);
		rb2.setOnClickListener(mClicker);
		
		TextView tv=(TextView) findViewById(R.id.tv);
		ListView lv=(ListView) findViewById(R.id.lv);
		int screenWidth=Util.getScreenWidth(this);
		tv.getLayoutParams().width=screenWidth;
		tv.setLayoutParams(tv.getLayoutParams());
		lv.getLayoutParams().width=screenWidth;
		lv.setLayoutParams(lv.getLayoutParams());
		adapter=new BaseAdapter() {
			
			@Override
			public View getView(int position, View convertView, ViewGroup parent) {
				String text=list.get(position);
				TextView tv=new TextView(MainActivity.this);
				tv.setText(text);
				return tv;
			}
			
			@Override
			public long getItemId(int position) {
				return position;
			}
			
			@Override
			public Object getItem(int position) {
				return list.get(position);
			}
			
			@Override
			public int getCount() {
				return list.size();
			}
		};
		lv.setAdapter(adapter);
		
		pageSv=(PageScrollView) findViewById(R.id.psv);
		pageSv.setOnPageScrolledListener(new PageScrollView.OnPageScrolledListener() {
			
			@Override
			public void onPageScrolled(int currentPage) {
				switch (currentPage) {
				case 0:
					rb1.setChecked(true);
					break;
				case 1:
					rb2.setChecked(true);
					break;

				default:
					break;
				}
			}
		});

		initData();
	}


	
	private void initData() {
		for(int i=0;i<90;i++){
			String text="TextView_"+(i+1);
			list.add(text);
		}
//  		adapter.notifyDataSetChanged();//注销,否则一开始看到的是第二页.
	}



	private View.OnClickListener mClicker=new View.OnClickListener() {
		
		public void onClick(View v) {
			// TODO Auto-generated method stub
			switch (v.getId()) {
			case R.id.rb1:
				pageSv.gotoPage(0);
				break;
			case R.id.rb2:
				pageSv.gotoPage(1);
				break;

			default:
				break;
			}
		}
	};
}

最后,好人做到底,贴上项目源码下载链接.

http://download.csdn.net/detail/keanta/9691844

不好意思,要了2分,因为,我需要点分...~~~^_^~~~