Android学习笔记--仿饿了么首页

首先要依赖    compile 'com.android.support:design:25.0.0'

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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="com.wuxianedu.aatoolbarto.MainActivity"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">



    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent" android:orientation="vertical"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
        <!--app:layout_scrollFlags="scroll|enterAlways 向上滑动ToolBar随时出现-->

        <!--app:layout_scrollFlags="scroll|exitUntilCollapsed"
         向上滑动时保留ToolBar的初始大小-->

        <!-- app:layout_scrollFlags="scroll|enterAlwaysCollapsed"
        向上滑动的时候ToolBar隐藏，向下滑动顶部的时候ToolBar出现-->

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/coll_zhedie"  android:fitsSystemWindows="true"
            android:layout_width="match_parent"
            app:layout_scrollFlags="scroll|exitUntilCollapsed"
            android:layout_height="wrap_content"
            app:contentScrim="?attr/colorPrimary">
            <ImageView
                android:layout_width="match_parent"
                android:layout_height="120dp"
                android:src="@mipmap/titts"
                app:layout_collapseParallaxMultiplier="0.8"
                android:scaleType="centerCrop"
                app:layout_collapseMode="parallax"
                android:fitsSystemWindows="true"
                />

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar_id"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"  app:layout_collapseMode="pin">

                <RelativeLayout android:layout_marginLeft="60dp"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content">

                    <TextView android:text="搜索" android:layout_marginLeft="45dp"
                        android:layout_width="wrap_content"  app:layout_collapseMode="pin"
                        android:layout_height="wrap_content" android:visibility="gone"/>

                    <com.wuxianedu.aatoolbarto.ClearEditText  android:gravity="center" android:hint="搜索商品和商家"
                        android:layout_width="300dp"  app:layout_collapseMode="pin"
                        android:layout_marginTop="4dp"
                        android:drawableRight="@drawable/lxrdelete" android:textColor="#000000"
                        android:background="@drawable/lxr_sousuo" android:text="输入商家和商品"
                        android:layout_height="40dp" android:visibility="visible"/>

                    <ImageView android:id="@+id/iv_sousuo" android:layout_width="wrap_content"
                        android:layout_height="20dp" android:layout_marginTop="12dp"
                        app:layout_collapseParallaxMultiplier="1"
                        android:src="@drawable/search_icon"   android:layout_marginLeft="5dp"/>

                </RelativeLayout>

            </android.support.v7.widget.Toolbar>

        </android.support.design.widget.CollapsingToolbarLayout>

    </android.support.design.widget.AppBarLayout>

  <android.support.v4.widget.NestedScrollView
      android:layout_width="wrap_content" app:layout_behavior="@string/appbar_scrolling_view_behavior"
      android:layout_height="match_parent">
      <ScrollView
          android:layout_width="wrap_content"
          android:layout_height="match_parent"
          app:layout_behavior="@string/appbar_scrolling_view_behavior">

          <LinearLayout android:orientation="vertical"
              android:layout_width="wrap_content"
              android:layout_height="500dp">

              <GridView android:id="@+id/gv_id" android:layout_marginLeft="15dp"
                  android:layout_width="wrap_content" android:numColumns="4"
                  android:layout_height="137dp" android:visibility="visible"/>

              <com.wuxianedu.aatoolbarto.NoScrollListView android:id="@+id/lv_id"
                  android:layout_width="wrap_content"
                  android:layout_height="500dp"/>
          </LinearLayout>
      </ScrollView>

  </android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

item_adapter.xml

1 <?xml version="1.0" encoding="utf-8"?>
2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3     android:orientation="vertical" android:layout_width="match_parent"
4     android:layout_height="match_parent">
5 
6     <ImageView android:id="@+id/image" android:src="@mipmap/icon_linkedin"
7         android:layout_width="wrap_content"
8         android:layout_height="wrap_content" />
9 </LinearLayout>

activity_mainsss.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="horizontal" >
 6 
 7     <ImageView
 8         android:id="@+id/head" android:src="@mipmap/ic_launcher"
 9         android:layout_width="100dp" android:layout_marginLeft="5dp"
10         android:layout_height="100dp" android:scaleType="centerCrop"
11         android:paddingLeft="10dp" />
12 
13     <LinearLayout
14         android:layout_width="match_parent"
15         android:layout_height="wrap_content"
16         android:orientation="vertical" >
17 
18         <TextView
19             android:id="@+id/name"
20             android:text="wowowow" android:layout_marginTop="25dp"
21             android:layout_width="wrap_content"
22             android:layout_height="wrap_content"
23             android:textSize="20dp"
24             android:textColor="#f0f"
25             android:paddingLeft="10dp"/>
26 
27         <TextView
28             android:id="@+id/pass"
29             android:text="介绍" android:layout_marginTop="10dp"
30             android:layout_width="wrap_content"
31             android:layout_height="wrap_content"
32             android:textSize="20dp"
33             android:textColor="#f0f"
34             android:paddingLeft="10dp"/>
35 
36     </LinearLayout>
37 
38 </LinearLayout>

布局文件都贴出来了，下面贴出代码

Mainactivity.java

 1 package com.wuxianedu.aatoolbarto;
 2 
 3 import android.support.v7.app.AppCompatActivity;
 4 import android.os.Bundle;
 5 import android.widget.GridView;
 6 import android.widget.ListView;
 7 import android.widget.SimpleAdapter;
 8 
 9 import java.util.ArrayList;
10 import java.util.HashMap;
11 import java.util.List;
12 import java.util.Map;
13 
14 public class MainActivity extends AppCompatActivity {
15     private String[] name = { "剑萧舞蝶", "张三", "hello", "诗情画意", "剑萧舞蝶", "张三", "hello", "诗情画意"
16     ,"剑萧舞蝶", "张三", "hello", "诗情画意", "剑萧舞蝶", "张三", "hello", "诗情画意","剑萧舞蝶", "张三", "hello", "诗情画意", "剑萧舞蝶", "张三", "hello", "诗情画意"};
17     private String[] names = { "剑萧舞蝶", "张三", "hello", "诗情画意", "剑萧舞蝶", "张三", "hello", "诗情画意"
18     ,"剑萧舞蝶", "张三", "hello", "诗情画意", "剑萧舞蝶", "张三", "hello", "诗情画意","剑萧舞蝶", "张三", "hello", "诗情画意", "剑萧舞蝶", "张三", "hello", "诗情画意"};
19     private int[] imageids = { R.mipmap.s1,R.mipmap.s2,R.mipmap.s3,R.mipmap.s4,R.mipmap.s5,R.mipmap.s6,R.mipmap.s7,
20             R.mipmap.s2,R.mipmap.s3,R.mipmap.s4,R.mipmap.s5,R.mipmap.s6,R.mipmap.s7,R.mipmap.s2,R.mipmap.s3,R.mipmap.s4,R.mipmap.s5,R.mipmap.s6,R.mipmap.s7,R.mipmap.s1,R.mipmap.s2,R.mipmap.s3,R.mipmap.s4,R.mipmap.s5,R.mipmap.s6,R.mipmap.s7,
21             R.mipmap.s2,R.mipmap.s3,R.mipmap.s4,R.mipmap.s5
22     ,R.mipmap.s1,R.mipmap.s2,R.mipmap.s3,R.mipmap.s4,R.mipmap.s5,R.mipmap.s6,R.mipmap.s7,
23             R.mipmap.s2,R.mipmap.s3,R.mipmap.s4,R.mipmap.s5,R.mipmap.s1,R.mipmap.s2,R.mipmap.s3,R.mipmap.s4,R.mipmap.s5,R.mipmap.s6,R.mipmap.s7,
24             R.mipmap.s2,R.mipmap.s3,R.mipmap.s4,R.mipmap.s5};
25     @Override
26     protected void onCreate(Bundle savedInstanceState) {
27         super.onCreate(savedInstanceState);
28         setContentView(R.layout.activity_main);
29 
30         GridView gridView = (GridView) findViewById(R.id.gv_id);
31 
32         ListView listView = (ListView) findViewById(R.id.lv_id);
33         List<Map<String, Object>> listems = new ArrayList<>();
34         List<Map<String, Object>> ssssss = new ArrayList<>();
35         for (int i = 0; i < name.length; i++) {
36             Map<String, Object> listem = new HashMap<String, Object>();
37             listem.put("head", imageids[i]);
38             listem.put("name", name[i]);
39             listem.put("pass", names[i]);
40             listems.add(listem);
41         }
42 
43         for (int i = 0; i < name.length; i++) {
44             Map<String, Object> listemss = new HashMap<String, Object>();
45             listemss.put("heads", R.mipmap.icon_linkedin);
46             ssssss.add(listemss);
47         }
48         SimpleAdapter simplead = new SimpleAdapter(this, listems,
49                 R.layout.activity_mainsss, new String[] { "name", "head","pass"},
50                 new int[] {R.id.name,R.id.head});
51         listView.setAdapter(simplead);
52         SimpleAdapter simpleads = new SimpleAdapter(this, ssssss,
53                 R.layout.item_adapter, new String[] {"heads"},
54                 new int[] {R.id.image});
55         gridView.setAdapter(simpleads);
56     }
57 }

自定义ListView.java

 1 package com.wuxianedu.aatoolbarto;
 2 
 3 import android.content.Context;
 4 import android.util.AttributeSet;
 5 import android.widget.ListView;
 6 
 7 /**
 8  * Created by Administrator on 2016/11/23.
 9  */
10 public class NoScrollListView extends ListView {
11     public NoScrollListView(Context context) {
12         super(context);
13     }
14     public NoScrollListView(Context context, AttributeSet attrs) {
15         super(context, attrs);
16     }
17 
18     public NoScrollListView(Context context, AttributeSet attrs, int defStyle) {
19         super(context, attrs, defStyle);
20     }
21 
22     @Override
23     public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
24         int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
25         super.onMeasure(widthMeasureSpec, expandSpec);
26     }
27 }

ClearEditText.java

 1 package com.wuxianedu.aatoolbarto;
 2 
 3 
 4 import android.content.Context;
 5 import android.graphics.drawable.Drawable;
 6 import android.text.TextUtils;
 7 import android.util.AttributeSet;
 8 import android.view.MotionEvent;
 9 import android.widget.EditText;
10 
11 /**
12  * 带删除图标的EditText
13  * @author Administrator
14  *
15  */
16 public class ClearEditText extends EditText{
17 
18     private Drawable rightDeleteIcon;
19     public ClearEditText(Context paramContext, AttributeSet paramAttributeSet) {
20         super(paramContext, paramAttributeSet);
21         rightDeleteIcon = getCompoundDrawables()[2];
22         int size = CoreUtil.dipToPixel(getContext(),18);
23         //设置drawable的 图片的大小  
24         rightDeleteIcon.setBounds(0, 0,size,size);
25     }
26 
27     @Override
28     public boolean dispatchTouchEvent(MotionEvent event) {
29         if ((rightDeleteIcon != null) && (event.getAction() == MotionEvent.ACTION_DOWN)) {
30             float f1 = event.getX();
31             float f2 = getWidth() - 80;
32             L.e("f1="+f1+",f2="+f2);
33             if (f1 > f2)
34                 setText(null);
35                 clearFocus();
36         }
37         return super.dispatchTouchEvent(event);
38     }
39 
40     @Override
41     public boolean onPreDraw() {
42         int width = CoreUtil.dipToPixel(getContext(),100);
43         if (TextUtils.isEmpty(getText()) || getWidth() < width) {
44             setCompoundDrawables(null, null, null, null);
45         } else {
46             setCompoundDrawables(null, null, rightDeleteIcon, null);
47         }
48         return true;
49     }
50     
51 }

CoreUtil.java

  1 package com.wuxianedu.aatoolbarto;
  2 
  3 import java.util.ArrayList;
  4 import java.util.List;
  5 import java.util.regex.Matcher;
  6 import java.util.regex.Pattern;
  7 
  8 import android.app.Activity;
  9 import android.app.ProgressDialog;
 10 import android.content.Context;
 11 import android.support.v4.app.FragmentActivity;
 12 import android.util.DisplayMetrics;
 13 import android.view.WindowManager;
 14 
 15 public class CoreUtil {
 16     //加载对话框
 17     private static ProgressDialog pd;
 18     private static float sDensity = 0;
 19     static List<FragmentActivity> list = new ArrayList<FragmentActivity>();
 20     
 21     /**
 22      * 把所有打开的activity加进集合
 23      * @param fActivity
 24      */
 25     public static void addToActivityList(FragmentActivity fActivity){
 26         if(!list.contains(fActivity)){
 27             list.add(fActivity);
 28         }
 29     }
 30     
 31     /**
 32      * 关闭activity集合
 33      */
 34     public static void finishActivityList(){
 35         L.e("activity集合大小-----》》"+list.size());
 36         for (int i = 0; i < list.size(); i++) {
 37             L.e("被关闭fragmentActivity-----》》"+list.get(i));
 38             list.get(i).finish();
 39         }
 40         list.clear();
 41     }
 42     
 43     /**
 44      * 关闭activity 并杀死进程。
 45      */
 46     public static void exitApp(){
 47         for (FragmentActivity activity : list) {
 48             activity.finish();
 49             L.e("exitApp:-----》》"+activity);
 50         }
 51         list.clear();
 52         L.e("android.os.Process.killProcess(android.os.Process.myPid());");
 53         android.os.Process.killProcess(android.os.Process.myPid());
 54     }
 55     
 56     
 57     /**
 58      * 开启加载提示对话款
 59      */
 60     public static void showProDialog(Context context) {
 61         if(pd == null ){
 62             pd = new ProgressDialog(context);
 63             pd.setMessage("加载中，请稍后...");
 64             pd.setCancelable(false);
 65         }
 66         if(pd.isShowing()){
 67 //            pd.dismiss();    
 68             return;
 69         }
 70         pd.show();
 71     }
 72     /**
 73      * 关闭加载提示对话款
 74      */
 75     public static void dismissProDialog() {
 76         if(pd != null ){
 77             pd.dismiss();    
 78         }
 79     }
 80     
 81     /**
 82      * 将sp值转换为px值，保证文字大小不变
 83      * @param context
 84      * @param spValue
 85      * @return
 86      */
 87     public static int spToPixel(Context context, float spValue) {
 88         final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
 89         return (int) (spValue * fontScale + 0.5f);
 90     }
 91     
 92     /**
 93      * dp转换为像素
 94      * @param context
 95      * @param nDip
 96      * @return
 97      */
 98     public static int dipToPixel(Context context, int nDip) {
 99         if (sDensity == 0) {
100             final WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
101             DisplayMetrics dm = new DisplayMetrics();
102             wm.getDefaultDisplay().getMetrics(dm);
103             sDensity = dm.density;
104         }
105         return (int) (sDensity * nDip);
106     }
107     
108     /**
109      * 获取屏幕 宽 高
110      * @param activity
111      * @return 数组  0 为宽度 1 为高度
112      */
113     public static int[] getDisplay(Activity activity){
114         int[] display = new int[2];
115         DisplayMetrics dm = new DisplayMetrics();
116         activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
117         display[0] = dm.widthPixels;
118         display[1] = dm.heightPixels;
119         return display;
120     }
121     
122     /**
123      * 判断是否为中文
124      * @param str
125      * @return
126      */
127     public static boolean isChinese(String str){
128         Pattern p=Pattern.compile("^[\u4e00-\u9fa5]*$");
129         Matcher m=p.matcher(str);
130         if(m.matches()){
131             return true;
132         }else{
133             return false;
134         }
135     }
136     /**
137      * 判断是否为字母
138      * @param
139      * @return
140      */
141     public static boolean isEnglish(String fstrData){   
142         char   c   =   fstrData.charAt(0);   
143         if(((c>='a'&&c<='z')   ||   (c>='A'&&c<='Z'))){   
144               return   true;   
145         }else{   
146               return   false;   
147         }   
148     }
149 
150 }

 

posted @ 2016-12-08 09:45  纯属浪费8818  阅读(541)  评论(0)  编辑  收藏  举报