Android-自定义多标题栏组件

1如图,当我们的项目有很多子项标题的时候.需要对标题实现左右滑动.点击标题切换Fragment.当滑动最左边的时候左箭头消失,滑至右边的时候同理.右箭头消失.

1)因为我们要对滑动实现弹力效果.故应该重写横向滑动(onScrollChanged()监听器用于对左右滑动框显示控制)

/**
 * @author Lean
 */
public class BounceHorizontalScrollView extends HorizontalScrollView {

	private static final int MAX_X_OVERSCROLL_DISTANCE = 30;// 最大Y轴移动尺寸
	private Context mContext;
	private int mMaxYOverscrollDistance;
	private View mLeftIndicator;
	private View mRightIndicator;

	public BounceHorizontalScrollView(Context context, AttributeSet attrs) {
		super(context, attrs);
		mContext = context;
		initBounceView();
	}
	
	public void setIndicator(View leftView,View rightView){
		mLeftIndicator=leftView;
		mRightIndicator=rightView;
	}

	private void initBounceView() {
		final DisplayMetrics metrics = mContext.getResources().getDisplayMetrics();
		final float density = metrics.density;
		mMaxYOverscrollDistance = (int) (density * MAX_X_OVERSCROLL_DISTANCE);
	}

	@Override
	@SuppressLint("NewApi")
	protected boolean overScrollBy(int deltaX, int deltaY, int scrollX, int scrollY, int scrollRangeX, int scrollRangeY, int maxOverScrollX, int maxOverScrollY, boolean isTouchEvent) {
		return super.overScrollBy(deltaX, deltaY, scrollX, scrollY, scrollRangeX, scrollRangeY, mMaxYOverscrollDistance,maxOverScrollY, isTouchEvent);
	}

	@Override
	protected void onScrollChanged(int l, int t, int oldl, int oldt) {
		super.onScrollChanged(l, t, oldl, oldt);
		if (mLeftIndicator!=null&&mRightIndicator!=null) {
			if (l<=0) {
				mLeftIndicator.setVisibility(View.GONE);
				mRightIndicator.setVisibility(View.VISIBLE);
			}if (l==180) {
				mLeftIndicator.setVisibility(View.VISIBLE);
				mRightIndicator.setVisibility(View.GONE);
			}else if(l<180&&l>0) {
				mLeftIndicator.setVisibility(View.VISIBLE);
				mRightIndicator.setVisibility(View.VISIBLE);
			}
		}
	}
	
}

因为点击后需要对外回调点击事件,因此需要把点击事件的任务交付给外面的业务类.

/**
 *		健康标题
 *
 * 	@author Lean  @date:2014-8-28  
 */
public class TitleFrameView extends FrameLayout implements OnClickListener{
	
	private View mLeftIndic;
	private View mRightIndic;
	private BounceHorizontalScrollView mScrollView;
	
	public TitleFrameView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}
	
	public void setItemClickListener(OnClickListener itemClickListener) {
		findViewById(R.id.unpay_tv).setOnClickListener(itemClickListener);
		findViewById(R.id.allpay_tv).setOnClickListener(itemClickListener);
		findViewById(R.id.unnurse_tv).setOnClickListener(itemClickListener);
		findViewById(R.id.nursing_tv).setOnClickListener(itemClickListener);
		findViewById(R.id.allnurse_tv).setOnClickListener(itemClickListener);
	}
	
	public void reShowItemTvColor(View v) {
		((TextView)findViewById(R.id.unpay_tv)).setTextColor(0xFFAFBEAD);
		((TextView)findViewById(R.id.allpay_tv)).setTextColor(0xFFAFBEAD);
		((TextView)findViewById(R.id.unnurse_tv)).setTextColor(0xFFAFBEAD);
		((TextView)findViewById(R.id.nursing_tv)).setTextColor(0xFFAFBEAD);
		((TextView)findViewById(R.id.allnurse_tv)).setTextColor(0xFFAFBEAD);
		((TextView)v).setTextColor(0xFFFFFFFF);
	}
	

	public void initDefault() {
		findViewById(R.id.unpay_tv).performClick();
	}

	@Override
	protected void onFinishInflate() {
		super.onFinishInflate();
		mLeftIndic=findViewById(R.id.iv_left);
		mLeftIndic.setOnClickListener(this);
		mRightIndic=findViewById(R.id.iv_right);
		mRightIndic.setOnClickListener(this);
		mScrollView=(BounceHorizontalScrollView) findViewById(R.id.scroll);
		mScrollView.setIndicator(mLeftIndic, mRightIndic);
	}

	@Override
	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.iv_left:
			mScrollView.scrollBy(-180,0);
			break;
		case R.id.iv_right:
			mScrollView.scrollBy(180,0);
			break;
		default:
			break;
		}
	}

}

<?xml version="1.0" encoding="utf-8"?>
<com.csz.vc.zbhealth.widget.TitleFrameView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#1F9401" >
	<com.csz.vc.zbhealth.widget.BounceHorizontalScrollView 
	    android:layout_width="match_parent"
	    android:layout_height="wrap_content"
	    android:id="@+id/scroll"
	    android:scrollbars="none"  >
	    <LinearLayout 
	        android:layout_height="40dip"
	        android:layout_width="match_parent"
	        android:orientation="horizontal" >
	        <TextView
	            android:id="@+id/unpay_tv" 
	            android:layout_height="match_parent"
	            android:layout_width="90dip"
	            android:text="@string/unpay"
	            android:textSize="18sp"
	            android:gravity="center"
	            android:textColor="@color/white"
	            android:background="#1F9401" />
	        <TextView
	            android:id="@+id/allpay_tv" 
	            android:layout_height="match_parent"
	            android:layout_width="90dip"
	            android:text="@string/allpay"
	            android:textSize="18sp"
	            android:gravity="center"
	            android:textColor="@color/white"
	            android:background="#1F9401" />
	        <TextView 
	            android:id="@+id/unnurse_tv" 
	            android:layout_height="match_parent"
	            android:layout_width="90dip"
	            android:text="@string/unnurse"
	            android:textSize="18sp"
	            android:gravity="center"
	            android:textColor="@color/white"
	            android:background="#1F9401" />
	        <TextView 
	            android:id="@+id/nursing_tv" 
	            android:layout_height="match_parent"
	            android:layout_width="90dip"
	            android:text="@string/nursing"
	            android:textSize="18sp"
	            android:gravity="center"
	            android:textColor="@color/white"
	            android:background="#1F9401" />
	        <TextView 
	            android:id="@+id/allnurse_tv" 
	            android:layout_height="match_parent"
	            android:layout_width="90dip"
	            android:text="@string/allnurse"
	            android:textSize="18sp"
	            android:gravity="center"
	            android:textColor="@color/white"
	            android:background="#1F9401" />
	    </LinearLayout>
	</com.csz.vc.zbhealth.widget.BounceHorizontalScrollView>
    <ImageView
        android:id="@+id/iv_left" 
        android:layout_height="match_parent"
        android:layout_width="30dip"
        android:layout_gravity="center_vertical|left"
        android:scaleType="center"
        android:src="@drawable/arrow_left" />
    <ImageView 
        android:id="@+id/iv_right" 
        android:layout_height="match_parent"
        android:layout_width="30dip"
        android:layout_gravity="center_vertical|right"
        android:scaleType="center"
        android:src="@drawable/arrow_right" />
</com.csz.vc.zbhealth.widget.TitleFrameView>