本文(爭取做到)Android 最全的底部導航欄實現方法.

現在寫了4個主要方法.

還有一些個人感覺不完全切題的方法也會簡單介紹一下.

方法一. ViewPager + List<View> + PagerAdapter

1. <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
2.     xmlns:tools="http://schemas.android.com/tools"
3.     android:layout_width
   ="match_parent"
4.     android:layout_height="match_parent"
5.     android:orientation="vertical">
6.     <LinearLayout
7.         android:layout_width="match_parent"
8.         android:layout_height="45dp"
9.         android:background="#0E6DB0"
10.         android:gravity="center"
11.         android:orientation
    ="vertical">
12.         <TextView
13.             android:layout_width="wrap_content"
14.             android:layout_height="wrap_content"
15.             android:layout_gravity="center"
16.             android:text="@string/app_name"
17.             android:textColor="#ffffff"
18.             android:textSize="20sp"
19.             android:textStyle="bold"/>
20.     </LinearLayout>
21.     <android.support.v4.view.ViewPager
22.         android:id="@+id/viewPager"
23.         android:layout_width="match_parent"
24.         android:layout_height="0dp"
25.         android:layout_weight="1">
26.     </android.support.v4.view.ViewPager>
27.     <LinearLayout
28.         android:layout_width="match_parent"
29.         android:layout_height="55dp"
30.         android:background="#0E6DB0"
31.         android:orientation="horizontal">
32.         <LinearLayout
33.             android:id="@+id/llChat"
34.             android:layout_width="0dp"
35.             android:layout_height="match_parent"
36.             android:layout_weight="1"
37.             android:gravity="center"
38.             android:orientation="vertical">
39.             <ImageView
40.                 android:id="@+id/ivChat"
41.                 android:layout_width="wrap_content"
42.                 android:layout_height="wrap_content"
43.                 android:background="#00000000"
44.                 android:src="@drawable/tab_chat"/>
45.             <TextView
46.                 android:id="@+id/tvChat"
47.                 android:layout_width="wrap_content"
48.                 android:layout_height="wrap_content"
49.                 android:text="微信"
50.                 android:textColor="@drawable/tab_textview"/>
51.         </LinearLayout>
52.         <LinearLayout
53.             android:id="@+id/llFriends"
54.             android:layout_width="0dp"
55.             android:layout_height="match_parent"
56.             android:layout_weight="1"
57.             android:gravity="center"
58.             android:orientation="vertical">
59.             <ImageView
60.                 android:id="@+id/ivFriends"
61.                 android:layout_width="wrap_content"
62.                 android:layout_height="wrap_content"
63.                 android:background="#00000000"
64.                 android:src="@drawable/tab_friends"/>
65.             <TextView
66.                 android:id="@+id/tvFriends"
67.                 android:layout_width="wrap_content"
68.                 android:layout_height="wrap_content"
69.                 android:text="朋友"
70.                 android:textColor="@drawable/tab_textview"/>
71.         </LinearLayout>
72.         <LinearLayout
73.             android:id="@+id/llContacts"
74.             android:layout_width="0dp"
75.             android:layout_height="match_parent"
76.             android:layout_weight="1"
77.             android:gravity="center"
78.             android:ori