首先是介绍ViewPager这个控件 ,这个控件需要pagerAdapter作为容器来提供数据,同时pagerAdapter的数据源是View数组
效果图如下
部分代码如下,实现如下的方法
mPagerAdapter = new PagerAdapter(){
@Override
public int getCount() {
return mViews.size();
}
@Override
public boolean isViewFromObject(View view, Object o) {
return view == o;
}
@Override
public Object instantiateItem(ViewGroup container, int position) {
View view = mViews.get(position);
container.addView(view);
return view;
}
@Override
public void destroyItem(ViewGroup container, int position, Object object) {
container.removeView(mViews.get(position));
}
};
View数组就是几个LinearLayout,代码如下
private List<View> mViews = new ArrayList<View>();
View tab01 = inflater.inflate(R.layout.tab01,null);
View tab02 = inflater.inflate(R.layout.tab02,null);
View tab03 = inflater.inflate(R.layout.tab03,null);
View tab04 = inflater.inflate(R.layout.tab04,null);
mViews.add(tab01);
mViews.add(tab02);
mViews.add(tab03);
mViews.add(tab04);
ViewPager的滑动点击事件
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int i, float v, int i2) {
}
@Override
public void onPageSelected(int i) {
int currentItem = viewPager.getCurrentItem();
resetImg();
switch(currentItem){
case 0:
btnWeixin.setImageResource(R.drawable.tab_weixin_pressed);
break;
case 1:
btnFriend.setImageResource(R.drawable.tab_find_frd_pressed);
break;
case 2:
btnAddress.setImageResource(R.drawable.tab_address_pressed);
break;
case 3:
btnSetting.setImageResource(R.drawable.tab_settings_pressed);
break;
default:
break;
}
}
@Override
public void onPageScrollStateChanged(int i) {
}
});
仿微信主页面,实现的效果是滑动ViewPager的各个页面之后,下面的图标也是随着相应的界面变亮,然后点击底部,相应的页面也会跳转
点击底部跳转的逻辑在于代码,ViewPager对各个页面是从0开始编号的
viewPager.setCurrentItem(1);
布局主要代码
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="45dp"
android:gravity="center"
android:background="@drawable/title_bar">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="微信"
android:textColor="#ffffff"
android:textSize="20sp"
android:layout_gravity="center"
android:textStyle="bold"/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="55dp"
android:gravity="center"
android:background="@drawable/bottom_bar"
>
<LinearLayout
android:id="@+id/tab_weixin"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical"
>
<ImageButton
android:id="@+id/tab_weixin_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/tab_weixin_pressed"
android:background="#00000000"
android:clickable="false"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="微信"
android:textColor="#ffffffff"/>
</LinearLayout>
<LinearLayout
android:id="@+id/tab_friend"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical"
>
<ImageButton
android:id="@+id/tab_friend_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/tab_find_frd_normal"
android:background="#00000000"
android:clickable="false"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="朋友"
android:textColor="#ffffffff"/>
</LinearLayout>
<LinearLayout
android:id="@+id/tab_address"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical"
>
<ImageButton
android:id="@+id/tab_address_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/tab_address_normal"
android:background="#00000000"
android:clickable="false"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="通讯录"
android:textColor="#ffffffff"/>
</LinearLayout>
<LinearLayout
android:id="@+id/tab_setting"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical"
>
<ImageButton
android:id="@+id/tab_setting_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/tab_settings_normal"
android:background="#00000000"
android:clickable="false"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="设置"
android:textColor="#ffffffff"/>
</LinearLayout>
</LinearLayout>
<LinearLayout 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" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
android:orientation="vertical"
>
<include layout="@layout/top"/>
<android.support.v4.view.ViewPager
android:id="@+id/viewPager"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1">
</android.support.v4.view.ViewPager>
<include layout="@layout/bottom"/>
</LinearLayout>
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项目源码代码地址是
