GoogleNow是Android4.1全新推出的一款应用他，它可以全面了解你的使用习惯，并为你提供现在或者未来可能用到的各种信息，GoogleNow提供的信息关联度较高，几乎是瞬间返回答案，总而言之，GoogleNow是Google提出的全新搜索概念。当然，GoogleNow最为引人注目的当属它的卡片式设计。Google自家应用纷纷采用卡片布局(Google Now,Google Plus,Google Play)。

在最新的QQ空间、新浪微博、豌豆荚中也可以见到卡片式设计的影子

下面介绍一种简单实现卡片布局的方式

list_item.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="wrap_content" tools:context=".MainActivity" android:background="@drawable/radius_bg"> <ImageView android:id="@+id/iv_logo" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_margin="8dp" android:src="@drawable/ic_launcher" /> <TextView android:id="@+id/tv_name" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignTop="@id/iv_logo" android:layout_toRightOf="@id/iv_logo" android:text="@string/hello_world" android:textSize="16sp" /> <TextView android:id="@+id/tv_desc" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/tv_name" android:layout_marginTop="5dp" android:layout_toRightOf="@id/iv_logo" android:text="@string/hello_world" android:textSize="13sp" /> </RelativeLayout>

自定义Shape图片radius_bg.xml

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android" > <corners android:radius="3dp"/> <solid android:color="#ffffff"/> </shape>

主界面布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" android:background="#e6e6e6"> <ListView android:id="@+id/mListView" android:layout_width="match_parent" android:layout_height="match_parent" android:divider="@android:color/transparent" android:paddingLeft="10dp" android:paddingRight="10dp" android:paddingTop="2dp" android:paddingBottom="2dp" android:dividerHeight="10dp" > </ListView> </RelativeLayout>

Card实体

package com.example.carduitest.model; public class Card { private String name; private String desc; private int icon; public Card(String name, String desc) { this.name = name; this.desc = desc; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getDesc() { return desc; } public void setDesc(String desc) { this.desc = desc; } public int getIcon() { return icon; } public void setIcon(int icon) { this.icon = icon; }}

自定义适配器

package com.example.carduitest.adapter; import java.util.List; import com.example.carduitest.R;import com.example.carduitest.model.Card;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView; public class CardAdapter extends BaseAdapter { private List<Card> data; private Context context; private LayoutInflater mInflater; public CardAdapter(List<Card> data, Context context) { this.data = data; this.context = context; mInflater = LayoutInflater.from(context); } @Override public int getCount() { // TODO Auto-generated method stub return data.size(); } @Override public Object getItem(int position) { // TODO Auto-generated method stub return data.get(position); } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder; if(convertView==null){ convertView = mInflater.inflate(R.layout.list_item, null); holder = new ViewHolder(); holder.tv_name = (TextView) convertView.findViewById(R.id.tv_name); holder.tv_desc = (TextView) convertView.findViewById(R.id.tv_desc); convertView.setTag(holder); }else{ holder = (ViewHolder) convertView.getTag(); } Card card = data.get(position); holder.tv_name.setText(card.getName()); holder.tv_desc.setText(card.getDesc()); return convertView; } static class ViewHolder{ TextView tv_name; TextView tv_desc; } }package com.example.carduitest; import java.util.ArrayList;import java.util.List; import com.example.carduitest.adapter.CardAdapter;import com.example.carduitest.model.Card; import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.widget.ListView; public class MainActivity extends Activity { private List<Card> data = new ArrayList<Card>(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initData(); ListView mListView = (ListView) findViewById(R.id.mListView); CardAdapter mAdapter = new CardAdapter(data,this); mListView.setAdapter(mAdapter); } private void initData() { for(int i=0;i<50;i++){ Card card = new Card("Card UI Example "+i, "Very Good"); data.add(card); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }

运行效果如下：

p>

当然啦，Github上面也有专门的实现card的library，这里列举两个不错的library

cardslib：地址

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。