SwipeListView：listview的側滑功能

listview的側滑功能，需要集成第三方的自定義控件SwipeListView。先看一下效果圖

下面詳細記錄一下集成步驟

          首先將四個java文件複製到自己的項目中分別是BaseSwipeListViewListener，SwipeListView，SwipeListViewListener，SwipeListViewTouchListener。然後需要導入一個jar包到libs文件中，jar包名爲nineoldandroids-2.4.0.jar

          集成好SwipeListview控件的環境後，下面看下具體如何用

listView中的item如何寫？

          items用的是FrameLayout寫，保證滑動的時候有上下兩層圖片，可以看到第一層佈局是linealayout，id爲back，添加了tag=back，這個佈局滑動後顯示的，第二層佈局也是linearlayout，添加了id爲front，這個佈局是顯示在前面的

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/edit_frame" >

    <LinearLayout
        android:orientation="horizontal"
        android:id="@+id/back"
        android:layout_width="match_parent"
        android:layout_height="fill_parent"
         android:background="#31d0cc"
        android:baselineAligned="false"
        
        android:tag="back" >

        <TextView
            android:layout_width="0dip"
            android:layout_height="fill_parent"
            android:layout_weight="3"
           
           >
        </TextView>

        <LinearLayout
            android:id="@+id/del"
            android:layout_width="0dip"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_weight="1"
            android:orientation="vertical" >

            <ImageView
                android:layout_width="35dp"
                android:layout_height="35dp"
                android:layout_gravity="center"
                android:contentDescription="@string/image_tag"
                android:src="@drawable/del"
                android:textSize="12sp" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="20dip"
                android:layout_gravity="center"
                android:gravity="center"
                android:text="@string/delete"
                android:textAppearance="?android:attr/textAppearanceLarge"
                android:textColor="#FFFFFF"
                android:textSize="12sp" />
        </LinearLayout>
    </LinearLayout>
    <LinearLayout
        android:id="@+id/front"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#FFFFFF"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="15dp"
            android:layout_marginTop="3dp"
            android:text="張強"
            android:textColor="#000000"
            android:textSize="18sp" />

        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" >

            <TextView
                android:id="@+id/position"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="15dp"
                android:text="@string/position"
                android:textColor="#000000" />

            <TextView
                android:id="@+id/position_txt"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="5dp"
                android:layout_toRightOf="@+id/position"
                android:text="上海總管"
                android:textColor="#000000" />
        </RelativeLayout>

        <RelativeLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="3dp" >

            <TextView
                android:id="@+id/tel"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="15dp"
                android:text="@string/phone_num"
                android:textColor="#000000" />

            <TextView
                android:id="@+id/tel_txt"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="5dp"
                android:layout_toRightOf="@+id/tel"
                android:text="15934758086"
                android:textColor="#000000" />
        </RelativeLayout>
    </LinearLayout>

</FrameLayout>

items佈局寫完後看下listview的寫法,其中很多屬性是設置swipelistview的，swipeOpenOnLongPress="false"意思是不能長按，app:swipeMode="left"的意思是可以向左滑動

app:swipeBackView="@+id/back"這裏就是講listview的背後控件應用過來了，swipeFrontView="@+id/front"把滑動的前面的佈局引用過來，back和front都是上面xml中的控件。

app:swipeOffsetLeft="0dp"表示的是滑動之後上一層佈局在左側有多寬的位置，也就是我圖中的白色的寬度。這個也可以在代碼中設置

		<com.myapp.widget.SwipeListView 
		    android:layout_height="fill_parent"
		    android:layout_width="fill_parent"
		    android:id="@+id/listview"
		    android:dividerHeight="5dp"
		    android:scrollbars="none"
		    android:divider="@null"
		    android:layout_marginLeft="8dp"
		    android:layout_marginRight="8dp"
		    android:layout_marginTop="8dp"
		    android:layout_marginBottom="3dp"
		    app:swipeActionLeft="reveal"
		    app:swipeActionRight="reveal"
		    app:swipeAnimationTime="0"
            	    app:swipeBackView="@+id/back"
                    app:swipeCloseAllItemsWhenMoveList="true"
                    app:swipeFrontView="@+id/front"
                    app:swipeMode="left"
                    app:swipeOffsetLeft="0dp"
                    app:swipeOffsetRight="0dp"
                    app:swipeOpenOnLongPress="false"
		     />

listview和items都寫好之後就要寫，看下adapter怎麼寫,adapter的構造器中傳入了一個mSwipeListView，然後delete的監聽事件裏調用了mSwipeListView.closeAnimate(position); mSwipeListView.dismiss(position);這兩個方法，可以將點擊的這個item隱藏了。記住這個方法。

package com.myapp.adapter;

import java.util.ArrayList;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;

public class CustomerLeadersAdapter extends BaseAdapter {
	private ArrayList<String> data;
	private Context context;
	private LayoutInflater inflater;
	private SwipeListView mSwipeListView;
	
	public CustomerLeadersAdapter(ArrayList<String> data, Context context,SwipeListView mSwipeListView){
		this.data = data;
		this.context = context;
		inflater = LayoutInflater.from(context);
		this.mSwipeListView = mSwipeListView;
	}

	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return data.size();
	}

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return position;
	}

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return position;
	}

	@Override
	public View getView(final int position, View convertView, ViewGroup parent) {
		// TODO Auto-generated method stub
		ViewHolder holder = null;
		if(convertView == null){
			holder = new ViewHolder();
			convertView = inflater.inflate(R.layout.customer_leaders_item, null);
			holder.name = (TextView) convertView.findViewById(R.id.name);
			holder.phoneNum = (TextView) convertView.findViewById(R.id.tel_txt);
			holder.positionTxt = (TextView) convertView.findViewById(R.id.position_txt);
			holder.delete = (LinearLayout) convertView.findViewById(R.id.del);
			convertView.setTag(holder);
		}else{
			holder = (ViewHolder) convertView.getTag();
		}
		holder.name.setText(data.get(position));
		holder.delete.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				mSwipeListView.closeAnimate(position);
				mSwipeListView.dismiss(position);
			}
		});
		return convertView;
	}
	
	public static class ViewHolder{
		private TextView name,phoneNum,positionTxt;
		public LinearLayout delete;
	}

}

最後在activity中顯示自己的listview，注意BaseSwipeListViewListener，在這個監聽事件中，只要監聽到dismiss方法調用的時候就會調用onDismiss()方法，我們在onDismiss方法中可以進行數據的刪除操作。BaseSwipeListViewListener中還有很多監聽事件可以供我們選擇，不僅是刪除功能，還可以做成菜單的功能等等。

package com.myapp.app;

import java.util.ArrayList;


import android.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;

public class ContactFragment extends Fragment{
	
	private SwipeListView listview;
	private ArrayList<String> data;
	private CustomerLeadersAdapter adapter;
	
	public static int deviceWidth;
	
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		View view = inflater.inflate(R.layout.contact_layout, container, false);
		data = new ArrayList<String>();
		data.add("張三");
		data.add("李四");
		data.add("王五");
		data.add("劉麻子");
		data.add("增強");
		data.add("羅坑");
		listview = (SwipeListView) view.findViewById(R.id.listview);
		adapter = new CustomerLeadersAdapter(data, getActivity().getApplicationContext(), listview);
		listview.setAdapter(adapter);
		listview.setSwipeListViewListener(new ContactBaseSwipeListViewListener());
		deviceWidth = getDeviceWidth();
		Log.i("Tag", "====width==="+deviceWidth);
		reload();
		return view;
	}

	private void reload() {
		listview.setSwipeMode(SwipeListView.SWIPE_MODE_LEFT);
		listview.setSwipeActionLeft(SwipeListView.SWIPE_ACTION_REVEAL);
		// listview.setSwipeActionRight(settings.getSwipeActionRight());
		listview.setOffsetLeft(deviceWidth * 67 / 100);
		// listview.setOffsetRight(convertDpToPixel(settings.getSwipeOffsetRight()));
		listview.setAnimationTime(0);
		listview.setSwipeOpenOnLongPress(false);
	}
	//預留用來計算listview寬度的四分之三
//	private int getDeviceWidth() {
//		ViewTreeObserver vto2 = listview.getViewTreeObserver(); 
//		vto2.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
//		@Override
//		public void onGlobalLayout() { 
//			listview.getViewTreeObserver().removeGlobalOnLayoutListener(this); 
//			deviceWidth = listview.getWidth();
//		} 
//		});
//		return deviceWidth;
//	}
	
	private int getDeviceWidth() {
		return getResources().getDisplayMetrics().widthPixels;
	}
	
	/**
	 * 當調用dismiss()方法的時候會調用onDismiss方法，所以在adapter中用mSwipeListView.dismiss(position)的時候
	 * 就會調用這個方法進行數據的刪除操作
	 * @author Administrator
	 *
	 */
	class ContactBaseSwipeListViewListener extends BaseSwipeListViewListener {

		@Override
		public void onClickFrontView(int position) {
			super.onClickFrontView(position);
		}

		@Override
		public void onDismiss(int[] reverseSortedPositions) {
			for (int position : reverseSortedPositions) {
				//這裏進行刪除數據的操作
			}
			adapter.notifyDataSetChanged();
		}
	}
}

到此全部結束。