Android学习笔记--欢迎界面的实现

activity_guide.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="match_parent"
tools:context="com.fch.android.guide.GuideActivity" >

<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/transparent" />

<RadioGroup
android:id="@+id/advertise_point_group"
android:layout_width="fill_parent"
android:layout_height="35dip"
android:layout_alignParentBottom="true"
android:gravity="center"
android:orientation="horizontal"
android:visibility="visible" >

<RadioButton
android:id="@+id/dot01"
style="@style/dot_style"
android:checked="true" />

<RadioButton
android:id="@+id/dot02"
style="@style/dot_style"
android:layout_marginLeft="10dip"
android:checked="false" />

<RadioButton
android:id="@+id/dot03"
style="@style/dot_style"
android:layout_marginLeft="10dip"
android:checked="false" />

<RadioButton
android:id="@+id/dot04"
style="@style/dot_style"
android:layout_marginLeft="10dip"
android:checked="false" />
</RadioGroup>

</RelativeLayout>

fragment1.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/guide1" >

</RelativeLayout>

fragment2.xml........ 与1 类似

package com.fch.android.adapter;

import java.util.ArrayList;
import java.util.List;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

public class ViewPagerAdapter extends FragmentPagerAdapter {

private List<Fragment> fragmentList = new ArrayList<Fragment>();

public ViewPagerAdapter(FragmentManager fm) {
super(fm);
}

public ViewPagerAdapter(FragmentManager fragmentManager,
List<Fragment> arrayList) {
super(fragmentManager);
this.fragmentList = arrayList;
}

@Override
public Fragment getItem(int arg0) {
return fragmentList.get(arg0);
}

@Override
public int getCount() {
return fragmentList.size();
}

}

package com.fch.android.fragment;

import com.fch.android.guide.R;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class Fragment1 extends Fragment {

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
return inflater.inflate(R.layout.fragment_1, container, false);
}

}
.....

package com.fch.android.guide;

import java.util.ArrayList;
import java.util.List;

import com.fch.android.adapter.ViewPagerAdapter;
import com.fch.android.fragment.Fragment1;
import com.fch.android.fragment.Fragment2;
import com.fch.android.fragment.Fragment3;
import com.fch.android.fragment.Fragment4;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.widget.RadioButton;
import android.widget.RadioGroup;

/**
*
* 引导页
*/
public class GuideActivity extends FragmentActivity {

private ViewPager viewPage;
private Fragment1 mFragment1;
private Fragment2 mFragment2;
private Fragment3 mFragment3;
private Fragment4 mFragment4;
private PagerAdapter mPgAdapter;
private RadioGroup dotLayout;
private List<Fragment> mListFragment = new ArrayList<Fragment>();

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_guide);

initView();
viewPage.setOnPageChangeListener(new MyPagerChangeListener());

}

private void initView() {
dotLayout = (RadioGroup) findViewById(R.id.advertise_point_group);
viewPage = (ViewPager) findViewById(R.id.viewpager);
mFragment1 = new Fragment1();
mFragment2 = new Fragment2();
mFragment3 = new Fragment3();
mFragment4 = new Fragment4();
mListFragment.add(mFragment1);
mListFragment.add(mFragment2);
mListFragment.add(mFragment3);
mListFragment.add(mFragment4);
mPgAdapter = new ViewPagerAdapter(getSupportFragmentManager(),
mListFragment);
viewPage.setAdapter(mPgAdapter);

}

public class MyPagerChangeListener implements OnPageChangeListener {

public void onPageSelected(int position) {

}

public void onPageScrollStateChanged(int arg0) {

}

public void onPageScrolled(int position, float positionOffset,
int positionOffsetPixels) {
((RadioButton) dotLayout.getChildAt(position)).setChecked(true);
}

}
}