这是一个使用NineOldAndroids实现仿微信listview左滑出现删除itembutton效果。使用的是Jake Wharton的动画开源库NineOldAndroids。在API3.0（Honeycomb）, SDK新增了一个android.animation包，里面的类是实现动画效果相关的类，通过Honeycomb API，能够实现非常复杂的动画效果，但是如果开发者想在3.0以下使用这一套API, 则需要使用开源框架Nine Old Androids，在这个库中会根据我们运行的机器判断其SDK版本，如果是API3.0以上则使用Android自带的动画类，否则就使用Nine Old Androids库中，这是一个兼容库。而在这里实现的是使用NineOldAndroids这个库，实现这种效果。这个库的下载地址：点击下载。
本文项目源码地址：点击下载
下面来看看部分代码是怎样实现的。
一、先看最终的效果图
二、使用这个listview的适配器RecentAdapter
package com.listview.adapter;
import java.util.LinkedList;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.main.entity.RecentItem;
import com.main.listviewsideslip.R;
import com.view.listview.SwipeListView;
public class RecentAdapter extends BaseAdapter {
private LayoutInflater mInflater;
private LinkedList<RecentItem> mData;
private SwipeListView mListView;
private Context mContext;
public RecentAdapter(Context context, LinkedList<RecentItem> data,
SwipeListView listview) {
mContext = context;
this.mInflater = LayoutInflater.from(mContext);
mData = data;
this.mListView = listview;
}
public void remove(int position) {
if (position < mData.size()) {
mData.remove(position);
notifyDataSetChanged();
}
}
public void remove(RecentItem item) {
if (mData.contains(item)) {
mData.remove(item);
notifyDataSetChanged();
}
}
public void addFirst(RecentItem item) {
if (mData.contains(item)) {
mData.remove(item);
}
mData.addFirst(item);
notifyDataSetChanged();
}
@Override
public int getCount() {
return mData.size();
}
@Override
public Object getItem(int position) {
return mData.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
final RecentItem item = mData.get(position);
ViewHolder vHolder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.recent_listview_item, null);
vHolder = new ViewHolder();
vHolder.nameTV = (TextView) convertView.findViewById(R.id.recent_list_item_name);
vHolder.numTV = (TextView) convertView.findViewById(R.id.unreadmsg);
vHolder.headIV = (ImageView) convertView.findViewById(R.id.icon);
vHolder.deleteBtn = (Button) convertView.findViewById(R.id.recent_del_btn);
convertView.setTag(vHolder);
}else {
vHolder = (ViewHolder) convertView.getTag();
}
vHolder.nameTV.setText(item.getName());
vHolder.headIV.setImageResource(item.getHeadImg());
int num = item.getNewNum();
if (num > 0) {
vHolder.numTV.setVisibility(View.VISIBLE);
vHolder.numTV.setText(num + "");
} else {
vHolder.numTV.setVisibility(View.GONE);
}
vHolder.deleteBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mData.remove(position);
notifyDataSetChanged();
if (mListView != null)
mListView.closeOpenedItems();
}
});
return convertView;
}
class ViewHolder{
public TextView nameTV;
public TextView numTV;
public ImageView headIV;
public Button deleteBtn;
}
}
三、使用这个适配器的一些接口BaseSwipeListViewListener
package com.view.listview;
public abstract class BaseSwipeListViewListener implements SwipeListViewListener {
@Override
public void onOpened(int position, boolean toRight) {
}
@Override
public void onClosed(int position, boolean fromRight) {
}
@Override
public void onListChanged() {
}
@Override
public void onMove(int position, float x) {
}
@Override
public void onStartOpen(int position, int action, boolean right) {
}
@Override
public void onStartClose(int position, boolean right) {
}
@Override
public abstract void onClickFrontView(int position);
@Override
public abstract void onClickBackView(int position);
@Override
public abstract void onDismiss(int[] reverseSortedPositions);
@Override
public int onChangeSwipeMode(int position) {
return SwipeListView.SWIPE_MODE_DEFAULT;
}
}
四、怎么调用上面的接口以及适配器，返回的接口。以及数据源的添加。看以下MainActivity
package com.main.listviewsideslip;
import java.util.Collections;
import java.util.LinkedList;
import com.listview.adapter.RecentAdapter;
import com.main.entity.RecentItem;
import com.view.listview.BaseSwipeListViewListener;
import com.view.listview.SwipeListView;
import android.os.Bundle;
import android.widget.TextView;
import android.app.Activity;
public class MainActivity extends Activity {
private RecentAdapter mAdapter;
private LinkedList<RecentItem> mRecentDatas;
private SwipeListView mRecentListView;
private TextView mEmpty;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView(savedInstanceState);
}
private void initView(Bundle savedInstanceState) {
mRecentListView = (SwipeListView) findViewById(R.id.recent_listview);
mRecentDatas = getRecentList();
mAdapter = new RecentAdapter(this, mRecentDatas, mRecentListView);
mRecentListView.setAdapter(mAdapter);
mEmpty = (TextView) findViewById(R.id.empty);
mRecentListView.setEmptyView(mEmpty);
mRecentListView
.setSwipeListViewListener(new BaseSwipeListViewListener() {
@Override
public void onClickFrontView(int position) {
}
@Override
public void onClickBackView(int position) {
mRecentListView.closeOpenedItems();// 关闭打开的项
}
@Override
public void onDismiss(int[] reverseSortedPositions) {
for (int position : reverseSortedPositions) {
mAdapter.remove(position);
}
}
});
}
//数据源
public LinkedList<RecentItem> getRecentList() {
LinkedList<RecentItem> list = new LinkedList<RecentItem>();
nameArray = getResources().getStringArray(R.array.jazzy_effects_ch);
for (int i = 0; i < 20; i++) {
int icon = heads[i];
String name = nameArray[i];
int num = numArray[i];
RecentItem item = new RecentItem(name, icon, num);
list.add(item);
}
Collections.sort(list);// 降序
return list;
}
public static int[] heads = { R.drawable.h0, R.drawable.h1,
R.drawable.h2, R.drawable.h3, R.drawable.h4, R.drawable.h5,
R.drawable.h6, R.drawable.h7, R.drawable.h8, R.drawable.h9,
R.drawable.h10, R.drawable.h11, R.drawable.h12, R.drawable.h13,
R.drawable.h14, R.drawable.h15, R.drawable.h16, R.drawable.h17,
R.drawable.h18, R.drawable.h19, R.drawable.h20, R.drawable.h21};
public static int[] numArray = { 21,67,65,8,54,67,23,78,98,54,67,23,67,423,23,67,90,12,34,56,978};
public static String[] nameArray = new String[21];
}
其他动画效果怎么弄出来的代码就不贴，包括怎样进行手势的控制。有兴趣下载本文的项目认真查看。xml文件也不贴出来。全部贴有点多。这里只说怎么使用这个库，相关的适配器，接口。实现的效果在本文的最上面。虽然在上面的注释写得很少。我相信使用继承BaseAdapter较多开发者，都能看清楚这个流程。如果新手看不懂，怎样使用这个开源库，请在下面留言。我会耐心解答。版权声明：本文为博主原创文章，未经博主允许不得转载。