矽谷新聞8--TabLayout替換ViewPagerIndicator

1.關聯庫

compile 'com.android.support:design:23.3.0'

2.佈局寫上TabLayout

 <android.support.design.widget.TabLayout
    android:id="@+id/tabLayout"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center_vertical"
    android:layout_weight="1" />

3.TabLayout和ViewPager關聯　　

tabLayout.setupWithViewPager(viewPager);
//註意以後監聽頁面的變化 ，TabPageIndicator監聽頁面的變化
// tabPagerIndicator.setOnPageChangeListener(new MyOnPageChangeListener()); 
viewPager.addOnPageChangeListener(new MyOnPageChangeListener()); 
tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE)

4.解決TabLayout和ViewPagerIndicator的相容問題　　

4.1 <activity android:name=".activity.MainActivity" android:theme="@style/Theme.PageIndicatorDefaults" />

4.2 ViewPagerIndicator庫修改成如下

<style name="Theme.PageIndicatorDefaults" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="vpiIconPageIndicatorStyle">@style/Widget.IconPageIndicator</item>
    <item name="vpiTabPageIndicatorStyle">@style/Widget.TabPageIndicator</item>
</style>

4.3添加V7包 compile 'com.android.support:appcompat-v7:23.3.0'　　

5.TabLayout設置指針顏色和高度&文字顏色

5.1.添加樣式

<android.support.design.widget.TabLayout
        android:id="@+id/tabLayout"
        android:layout_width="wrap_content"
        style="@style/MyCustomTabLayout"
        android:layout_height="wrap_content"
        android:layout_weight="1" />

5.2. values目錄下styles.xml裡面

 <style name="MyCustomTabLayout" parent="Widget.Design.TabLayout">

        <item name="tabMaxWidth">72dp</item>
        <item name="tabMinWidth">72dp</item>
        <item name="tabIndicatorColor">#ff0000</item>
        <item name="tabIndicatorHeight">2dp</item>
        <item name="tabTextAppearance">@style/MyCustomTabTextAppearance</item>
        <item name="tabSelectedTextColor">@android:color/holo_red_light</item>

    </style>

    <style name="MyCustomTabTextAppearance" parent="TextAppearance.Design.Tab">
        <item name="android:textSize">16sp</item>
        <item name="android:textColor">@android:color/black</item>
        <item name="textAllCaps">false</item>
    </style>

6.TabLayout自定義樣式

1.設置的樣式

vp_news_menu_detailpager.setAdapter(adapter);
tabLayout.setupWithViewPager(vp_news_menu_detailpager);
//設置滾動模式
tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE);

for (int i = 0; i < tabLayout.getTabCount(); i++) {
	TabLayout.Tab tab = tabLayout.getTabAt(i);
	tab.setCustomView(getTabView(i));
}
//註意了setupWithViewPager必須在ViewPager.setAdapter()之後調用

2.在適配器中添加getTabView()方法

public View getTabView(int position){
	View view = LayoutInflater.from(context).inflate(R.layout.tab_item, null);
	TextView tv= (TextView) view.findViewById(R.id.textView);
	tv.setText(childrenDatas.get(position).getTitle());
	ImageView img = (ImageView) view.findViewById(R.id.imageView);
	img.setImageResource(R.drawable.dot_focus);
	return view;
}

佈局文件tab_item.xml文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:gravity="center_horizontal"
	android:orientation="vertical">

	<TextView
		android:text="text"
		android:id="@+id/textView"
		android:textColor="#000000"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content"
		android:layout_marginLeft="3dp" />

	<ImageView
		android:src="@drawable/dot_focus"
		android:id="@+id/imageView"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content"
		android:layout_centerVertical="true" />
	
</LinearLayout>