Android 自定義橫向滾動條

Android 自定義橫向滾動條。當你的橫向字段或者表格很多時候，顯示不下內容，可以使用很想滾動條進行滾動。豎向方面我添加了listview進行添加數據。兩者滾動互不干擾。橫向滾動條的可以自定義不同的字段的，進行加載就行了。接下來看看效果圖，再看代碼。

一、效果圖

二、自定義MyHScrollView繼承HorizontalScrollView

package com.org.scrollview;

import java.util.ArrayList;
import java.util.List;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.HorizontalScrollView;

/*
 * 自定義的 滾動控件
 * 重載了 onScrollChanged（滾動條變化）,監聽每次的變化通知給 觀察(此變化的)觀察者
 * 可使用 AddOnScrollChangedListener 來訂閱本控件的 滾動條變化
 * */
public class MyHScrollView extends HorizontalScrollView {
	ScrollViewObserver mScrollViewObserver = new ScrollViewObserver();

	public MyHScrollView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		// TODO Auto-generated constructor stub
	}

	public MyHScrollView(Context context, AttributeSet attrs) {
		super(context, attrs);
		// TODO Auto-generated constructor stub
	}

	public MyHScrollView(Context context) {
		super(context);
		// TODO Auto-generated constructor stub
	}
	
	@Override
	public boolean onTouchEvent(MotionEvent ev) {
		Log.i(pdwy,MyHScrollView onTouchEvent);
		return super.onTouchEvent(ev);
	}

	@Override
	protected void onScrollChanged(int l, int t, int oldl, int oldt) {
		/*
		 * 當滾動條移動後，引發 滾動事件。通知給觀察者，觀察者會傳達給其他的。
		 */
		if (mScrollViewObserver != null /*&& (l != oldl || t != oldt)*/) {
			mScrollViewObserver.NotifyOnScrollChanged(l, t, oldl, oldt);
		}
		super.onScrollChanged(l, t, oldl, oldt);
	}

	/*
	 * 訂閱 本控件 的 滾動條變化事件
	 * */
	public void AddOnScrollChangedListener(OnScrollChangedListener listener) {
		mScrollViewObserver.AddOnScrollChangedListener(listener);
	}

	/*
	 * 取消 訂閱 本控件 的 滾動條變化事件
	 * */
	public void RemoveOnScrollChangedListener(OnScrollChangedListener listener) {
		mScrollViewObserver.RemoveOnScrollChangedListener(listener);
	}

	/*
	 * 當發生了滾動事件時
	 */
	public static interface OnScrollChangedListener {
		public void onScrollChanged(int l, int t, int oldl, int oldt);
	}

	/*
	 * 觀察者
	 */
	public static class ScrollViewObserver {
		List mList;

		public ScrollViewObserver() {
			super();
			mList = new ArrayList();
		}

		public void AddOnScrollChangedListener(OnScrollChangedListener listener) {
			mList.add(listener);
		}

		public void RemoveOnScrollChangedListener(
				OnScrollChangedListener listener) {
			mList.remove(listener);
		}

		public void NotifyOnScrollChanged(int l, int t, int oldl, int oldt) {
			if (mList == null || mList.size() == 0) {
				return;
			}
			for (int i = 0; i < mList.size(); i++) {
				if (mList.get(i) != null) {
					mList.get(i).onScrollChanged(l, t, oldl, oldt);
				}
			}
		}
	}
}

package com.org.scrollview;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.LinearLayout;

/*
 * 
 * 一個視圖容器控件
 * 阻止 攔截 ontouch事件傳遞給其子控件
 * */
public class InterceptScrollContainer extends LinearLayout {

	public InterceptScrollContainer(Context context, AttributeSet attrs) {
		super(context, attrs);
		// TODO Auto-generated constructor stub
	}

	public InterceptScrollContainer(Context context) {
		super(context);
		// TODO Auto-generated constructor stub
	}
//	
//	@Override
//	public boolean dispatchTouchEvent(MotionEvent ev) {
//		// TODO Auto-generated method stub
//		//return super.dispatchTouchEvent(ev);
//		Log.i(pdwy,ScrollContainer dispatchTouchEvent);
//		return true;
//	}

	@Override
	public boolean onInterceptTouchEvent(MotionEvent ev) {
		// TODO Auto-generated method stub
		//return super.onInterceptTouchEvent(ev);
		Log.i(pdwy,ScrollContainer onInterceptTouchEvent);
		return true;
		
		//return super.onInterceptTouchEvent(ev);
	}
	
//	@Override
//	public boolean onTouchEvent(MotionEvent event) {
//		// TODO Auto-generated method stub
//		Log.i(pdwy,ScrollContainer onTouchEvent);
//		return true;
//	}
}

package com.org.horizontalscrollview;

import java.util.ArrayList;
import java.util.LinkedList;
import com.org.scrollview.MyHScrollView;
import com.org.scrollview.MyHScrollView.OnScrollChangedListener;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Toast;

public abstract class CustomListScrollManageActivity extends Activity{
	//列表的標題
	protected ArrayList mListHeadItemsName = new ArrayList();
	//每一項checkbox的記錄列表
	protected LinkedList mItemsExtendData;
	//列表整體標題欄
	private LinearLayout mListHead = null;
	//列表整體標題欄滾動條
	private MyHScrollView mHScrollView = null;
	//是否顯示第一列
	protected boolean mIsShowTextIndex = true;
	//listview的適配器
	protected ListNumScrollAdapter mAdapter;
	//整體的根布局
	protected int mRootLayout = R.layout.layout_common_sroll;
	//設置是否支持長按
	protected boolean mItemCanLongClick = true;
	//處於長按狀態true，不是長按狀態false
	protected boolean mLongClickStatus = false;
	
	//checkbox的狀態
	protected class ItemStatus {
		public boolean mIsCheckBoxVisible = false;
		public boolean mIsCheckBoxSelected = false;
	}
	
	//實例化每一項checkbox的記錄列表mItemsExtendData
	protected LinkedList GetItemsExtendData() {
		if (mItemsExtendData == null) mItemsExtendData = new LinkedList();
		return mItemsExtendData;
	}
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(mRootLayout);
		
	}
	
	//子類繼承後初始化子類數據後，需要調用這個，初始化父類。
	protected void initView() {
		mListHead = (LinearLayout) findViewById(R.id.surfaceManagerListHead);
		mHScrollView = (MyHScrollView) mListHead.findViewById(R.id.MyHScrollView_head);
		ListView listItem = (ListView)findViewById(R.id.listViewCommonFeatureItems);
		//設置表頭的觸摸滑動事件
		mHScrollView.setOnTouchListener(new ListViewAndHeadViewTouchLinstener());
		listItem.setOnItemClickListener(new OnItemClickListener());
		listItem.setOnItemLongClickListener(new OnItemLongClickListener());
		mAdapter = new ListNumScrollAdapter(this);
		listItem.setAdapter(mAdapter);
		
		mListHeadItemsName = getReadListHeadItems();
		
		recreateHeadControl();
		
		initCheckBoxVilible();
		
		setCheckBoxStatue(false);
		
		mAdapter.notifyDataSetChanged();
	}
	
	//加載表頭列表數據
	protected void recreateHeadControl() {
		mListHead.setFocusable(true);
		mListHead.setClickable(true);
		mListHead.setOnTouchListener(new ListViewAndHeadViewTouchLinstener());
		
		TextView headIndex = (TextView)mListHead.findViewById(R.id.textIndex);
		setTextParams(headIndex, mListHeadItemsName.size());
		headIndex.setText(序號);
		headIndex.setVisibility(mIsShowTextIndex == true?View.VISIBLE:View.GONE);
		
		LinearLayout layout_items = (LinearLayout)mListHead.findViewById(R.id.layoutTextHeadItems);
		layout_items.removeAllViews();
		for (int i = 0; i < mListHeadItemsName.size(); i++) {
			TextView text=new TextView(this);
			text.setTextColor(getResources().getColor(R.color.list_head));
			setTextParams(text, mListHeadItemsName.size());
			text.setText(mListHeadItemsName.get(i));
			layout_items.addView(text);
		}
	}
	
	//初始化每一項的CheckBox
	private void initCheckBoxVilible(){
		GetItemsExtendData().clear();
		for (int i = 0; i < getItemsCount(); i++) {
			ItemStatus itemData = new ItemStatus();
			// 插入隊列
			GetItemsExtendData().add(itemData);
		}		
	}
	
	class ListViewAndHeadViewTouchLinstener implements View.OnTouchListener {

		@Override
		public boolean onTouch(View arg0, MotionEvent event) {
			//當在列頭 和 listView控件上touch時，將這個touch的事件分發給 ScrollView
			try {
				mHScrollView.onTouchEvent(event);
			} catch (IllegalArgumentException e) {   
		        e.printStackTrace();
		        return false;
		    }	
		return false;		    
		}
	}	
	
	//抽象接口，列表標題欄
	public abstract ArrayList getReadListHeadItems();
	//抽象接口，listview整體數據項
	public abstract int getItemsCount();
	/**
	 * 抽象接口，listview每一項數據的裝載，裝載返回是
	 * @param recordIndex
	 * @return  ArrayList
	 */
	public abstract ArrayList getIndexDataArray(int recordIndex);
	////////////////////////////////////////////////////////////
	//需要每一項編輯或者增加,刪除數據的抽象接口，請看具體情況自行添加
	
	
	
	/**
	 * listview適配器
	 * @author Administrator
	 *
	 */
	public class ListNumScrollAdapter extends BaseAdapter implements OnCheckedChangeListener {
		private Context mContext;
		private LayoutInflater mLayoutInflater;
		
		public ListNumScrollAdapter(Context context) {
			this.mContext = context;
			mLayoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		}
		
		@Override
		public int getCount() {
			Log.e(Show, String.valueOf(getItemsCount()));
			return getItemsCount();
		}

		@Override
		public Object getItem(int arg0) {
			return null;
		}

		@Override
		public long getItemId(int arg0) {
			return arg0;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			int nHeadItemCount = mListHeadItemsName.size();
			ViewHolder viewHolder = null;
			View view = null;
			//內部類ViewHolder的作用只是用來查找ID，加載布局。提升效率的
			if (convertView == null) {
				viewHolder = new ViewHolder();
				view = mLayoutInflater.inflate(R.layout.layout_scroll_list_item, null);
				viewHolder.hscrollView = (MyHScrollView) view.findViewById(R.id.MyHScrollView_item);
				viewHolder.headIndex = (TextView)view.findViewById(R.id.textIndex);
				viewHolder.isSelectedCheckBox = (CheckBox) view.findViewById(R.id.checkBoxIsSelected);
				view.setTag(viewHolder);
				
			}else {
				view = convertView;
				viewHolder = (ViewHolder) view.getTag();
			}
			
			//合理分配橫向滾動layout中textview的大小
			TextView lisTextView[] = new TextView[nHeadItemCount];
			LinearLayout layout_items = (LinearLayout)viewHolder.hscrollView.findViewById(R.id.layoutTextItems);
			layout_items.removeAllViews();
			for (int i = 0; i < nHeadItemCount; i++) {
				TextView text=new TextView(mContext);
				text.setGravity(Gravity.CENTER_VERTICAL); 
				setTextParams(text, nHeadItemCount);
				layout_items.addView(text);
				lisTextView[i] = text;
			}
			
			//列表標題欄，序號數據裝載
			setTextParams(viewHolder.headIndex, nHeadItemCount);
			viewHolder.headIndex.setText(String.valueOf(position));
			viewHolder.headIndex.setVisibility(mIsShowTextIndex == true ? View.VISIBLE : View.GONE);
			
			//每一項橫向滾動數據的裝載
			ArrayList itemsData = getIndexDataArray(position);
			for(int i=0; i < nHeadItemCount;i++) {
				String value = itemsData.get(i);
				lisTextView[i].setText(value);
			}
			
			//多選checkbox的狀態
			if (viewHolder.isSelectedCheckBox != null) {
				// 設置數據
				viewHolder.isSelectedCheckBox.setTag(position);
				viewHolder.isSelectedCheckBox.setVisibility(mItemsExtendData.get(position).mIsCheckBoxVisible == true ? View.VISIBLE
						: View.INVISIBLE);
				viewHolder.isSelectedCheckBox.setChecked(mItemsExtendData.get(position).mIsCheckBoxSelected);
				// 添加事件
				viewHolder.isSelectedCheckBox.setOnCheckedChangeListener(this);
			}
			
			//表頭列表的滾動條事件添加到listview的每一項item
			mHScrollView.AddOnScrollChangedListener(new OnScrollChangedListenerImp(viewHolder.hscrollView));
			return view;
		}

		@Override
		public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
			Integer nPosition = (Integer)(buttonView.getTag());
			mItemsExtendData.get(nPosition.intValue()).mIsCheckBoxSelected = isChecked;
		}
		
		class OnScrollChangedListenerImp implements OnScrollChangedListener {
			MyHScrollView mScrollViewArg;

			public OnScrollChangedListenerImp(MyHScrollView scrollViewar) {
				mScrollViewArg = scrollViewar;
			}

			@Override
			public void onScrollChanged(int l, int t, int oldl, int oldt) {
				mScrollViewArg.smoothScrollTo(l, t);
			}
		}

	}	

	//listview的內部類
	static class ViewHolder {
		TextView headIndex;
		MyHScrollView hscrollView;
		CheckBox isSelectedCheckBox;
	}
	
	private class OnItemClickListener implements android.widget.AdapterView.OnItemClickListener{
		@Override
		public void onItemClick(AdapterView parent, View view, int position,long id) {
			CheckBox isSelectedCheckBox = (CheckBox)view.findViewById(R.id.checkBoxIsSelected);
			if (mLongClickStatus) {
				//checkbox選擇區域增強效果
				 isSelectedCheckBox.setChecked(!isSelectedCheckBox.isChecked());
				 return;
			}
			Integer nPosition = (Integer)(isSelectedCheckBox.getTag());
			Toast.makeText(getApplicationContext(), String.valueOf(nPosition), Toast.LENGTH_SHORT).show();			
		}
	}
	
	private class OnItemLongClickListener implements android.widget.AdapterView.OnItemLongClickListener{
		@Override
		public boolean onItemLongClick(AdapterView parent, View view,int position, long id) {
			setCheckBoxStatue(true);
			return true;
		}
	}
	
	//控制listView checkbox控件的隱藏和顯示
	protected void setCheckBoxStatue(boolean isVisible){
		if (isVisible) {
			for (ItemStatus ItemData: GetItemsExtendData()) {
				ItemData.mIsCheckBoxSelected = false;
				ItemData.mIsCheckBoxVisible = true;
			}	
		}else {
			for (ItemStatus ItemData: GetItemsExtendData()) {
				ItemData.mIsCheckBoxSelected = false;
				ItemData.mIsCheckBoxVisible = false;
			}			
		}
		mLongClickStatus = isVisible;
		mAdapter.notifyDataSetChanged();
	}
	
	@Override
	public void finish(){
		if (mLongClickStatus) {
			setCheckBoxStatue(false);
			return;
		}
		super.finish();
	}
		
	//設置橫向滾動中layout裡面textview的寬度
	private void setTextParams(TextView textView, int col) {
		if (col == 0)
			return;
		textView.setMaxLines(1);
		textView.setTextSize(14);
		textView.setPadding(4, 0, 4, 0);
		textView.setGravity(Gravity.CENTER_HORIZONTAL | Gravity.CENTER_VERTICAL);

		DisplayMetrics metric = new DisplayMetrics();
		getWindowManager().getDefaultDisplay().getMetrics(metric);
		int basicScreenWidth = metric.widthPixels; // 屏幕寬度（像素）
		int basicScreenHeight = metric.heightPixels; // 屏幕高度（像素）

		int screenWidth = basicScreenWidth - dip2px(this, 60);
		if (col <= 3) {
			textView.setWidth(screenWidth / col + 20);
		} else {
			if (screenWidth > basicScreenHeight) {
				if (col > 5) {
					textView.setWidth(screenWidth / 5 + 10);
				} else {
					textView.setWidth(screenWidth / col + 10);
				}
			} else {
				textView.setWidth(screenWidth / 3 + 20);
			}
		}
	}

	public static int dip2px(Context context, float dpValue) {
		final float scale = context.getResources().getDisplayMetrics().density;
		return (int) (dpValue * scale + 0.5f);
	}
}

package com.org.horizontalscrollview;

import java.util.ArrayList;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Toast;

public class MainActivity extends CustomListScrollManageActivity {
	private ArrayList mList = new ArrayList();

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		getDataSource();
		super.initView();
	}

    public ArrayList getDataSource(){
    	for (int i = 0; i < 20; i++) {
    		int j = i;
        	StudentItem item1 = new StudentItem(j, 同學A, 男, 17, 高二);
        	mList.add(item1);	
        	j ++ ;
        	StudentItem item2 = new StudentItem(j, 同學B, 女, 17, 高三);
        	mList.add(item2);
		}
    	return mList;
    }
	
	@Override
	public ArrayList getReadListHeadItems() {
		ArrayList headItems = new ArrayList();
		headItems.add(學號);
		headItems.add(姓名);
		headItems.add(性別);
		headItems.add(年齡);
		headItems.add(年級);
		return headItems;
	}
	
	@Override
	public ArrayList getIndexDataArray(int recordIndex) {
		ArrayList itemsData = new ArrayList();
		StudentItem item = new StudentItem();
		item = mList.get(recordIndex);
		for (int i = 0; i 

六、主要布局layout_common_sroll
 
 



    <framelayout android:layout_height="match_parent" android:layout_width="match_parent">

        

            

                

                    

                    

                        

                            

                                
                                
                            
                        
                    

                    <framelayout android:layout_height="match_parent" android:layout_marginright="15dp" android:layout_width="wrap_content" android:visibility="gone">

                        
                    </framelayout>
                
            

            

                

                    
                    
                
            
        
    </framelayout>


 
 
七、差點忘了介紹另外一個功能。長按listview的item會出現checkbox進行選擇。按返回鍵就消失。看看效果圖。


 
這些選中的狀態都有記下來了，後期你想怎麼用就怎麼用。到了這裡就結束了，歡迎交流學習。