使用viewpage加載fragment

簡單的ViewPage佈局：

/2013.09.05_ViewPage_Fragment_Demo/res/layout/activity_main.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.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:flipInterval="30"
        android:persistentDrawingCache="animation" />
</RelativeLayout>

/2013.09.05_ViewPage_Fragment_Demo/res/layout/viewpager1.xml

<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/guide_1" >

    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="54dp"
        android:background="@drawable/butten"
        />

</RelativeLayout>

/2013.09.05_ViewPage_Fragment_Demo/res/layout/viewpager2.xml

<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/guide_2" >

    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="54dp"
        android:background="@drawable/butten" />

</RelativeLayout>

再來一個適配器：

/2013.09.05_ViewPage_Fragment_Demo/src/com/wwj/vf/adapter/FragAdapter.java

package com.wwj.vf.adapter;

import java.util.List;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
/**
 * FragmentPager適配器
 * @author wwj
 *
 */
public class FragAdapter extends FragmentPagerAdapter{

    private List<Fragment> fragments;


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

    public FragAdapter(FragmentManager fm, List<Fragment> fragments) {
        super(fm);
        this.fragments = fragments;
    }

    @Override
    public Fragment getItem(int position) {
        return fragments.get(position);
    }

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

兩個自定義的Fragment

這裏很簡單，一張背景+一個按鈕

/2013.09.05_ViewPage_Fragment_Demo/src/com/wwj/vf/ui/MyFragment1.java

package com.wwj.vf.ui;

import com.wwj.vf.R;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;
/**
 * 第一個Fragment
 *
 * @author wwj
 *
 */
public class MyFragment1 extends Fragment {
    private Button btn;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.viewpager1, container, false);
        btn = (Button) view.findViewById(R.id.btn);
        btn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(getActivity(), "你點我啦，好壞！！！", Toast.LENGTH_LONG).show();
            }
        });
        return view;
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
    }

    @Override
    public void onPause() {
        super.onPause();
    }

}

/2013.09.05_ViewPage_Fragment_Demo/src/com/wwj/vf/ui/MyFragment2.java

package com.wwj.vf.ui;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;

import com.wwj.vf.R;
/**
 * 第2個Fragment
 *
 * @author wwj
 *
 */
public class MyFragment2 extends Fragment {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.viewpager2, container, false);
        view.findViewById(R.id.btn).setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(getActivity(), "這個Fragment2哦，要注意了！！", Toast.LENGTH_SHORT).show();
            }
        });
        return view;
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
    }

    @Override
    public void onPause() {
        super.onPause();
    }

}

好啦，在Activity裏添加兩個Fragment

package com.wwj.vf;

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

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;

import com.wwj.vf.adapter.FragAdapter;
import com.wwj.vf.ui.MyFragment1;
import com.wwj.vf.ui.MyFragment2;
/**
 * 主Activity，包含兩個fragment
 *
 * @author wwj
 *
 */
public class MainActivity extends FragmentActivity {

    private ViewPager vp;
    private FragAdapter adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        vp = (ViewPager) findViewById(R.id.viewpager);

        List<Fragment> fragments = new ArrayList<Fragment>();
        fragments.add(new MyFragment1());
        fragments.add(new MyFragment2());

        adapter = new FragAdapter(getSupportFragmentManager(), fragments);
        vp.setAdapter(adapter);
        vp.setCurrentItem(0);
    }

}