VPandFMActivity.java
package com.example.administrator.main;
import android.support.v4.app.Fragment;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.ImageView;
import android.widget.TextView;
import com.example.administrator.adapter.TabFragmentPagerAdapter;
import com.example.administrator.fragment.FaJianFragment;
import com.example.administrator.fragment.ShouJianFragment;
import java.util.ArrayList;
import java.util.List;
public class VPandFMActivity extends AppCompatActivity implements View.OnClickListener{
private ImageView back;
private TextView title;
private TextView shoujian;
private TextView fajian;
private ViewPager myViewPager;
private List<Fragment> list;
private TabFragmentPagerAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// 1、一般情况下去除title
requestWindowFeature(Window.FEATURE_NO_TITLE);
//2、Activity继承AppCompatActivity去掉标题栏
supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_vpand_fm);
initView();
back.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
shoujian.setOnClickListener(this);
fajian.setOnClickListener(this);
myViewPager.setOnPageChangeListener(new MyPagerChangeListener());
//把Fragment添加到List集合里面
list = new ArrayList<>();
list.add(new ShouJianFragment());
list.add(new FaJianFragment());
adapter = new TabFragmentPagerAdapter(getSupportFragmentManager(), list);
myViewPager.setAdapter(adapter);
myViewPager.setCurrentItem(0); //初始化显示第一个页面
}
private void initView(){
back = findViewById(R.id.back);
title = findViewById(R.id.txt_title);
shoujian = findViewById(R.id.shoujian);
fajian = findViewById(R.id.fajian);
myViewPager = findViewById(R.id.myViewPager);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.shoujian:
myViewPager.setCurrentItem(0);
shoujian.setTextColor(getResources().getColor(R.color.colorPrimary));
fajian.setTextColor(getResources().getColor(R.color.black));
break;
case R.id.fajian:
myViewPager.setCurrentItem(1);
shoujian.setTextColor(getResources().getColor(R.color.black));
fajian.setTextColor(getResources().getColor(R.color.colorPrimary));
break;
}
}
/**
* 设置一个ViewPager的侦听事件,当左右滑动ViewPager时菜单栏被选中状态跟着改变
*
*/
public class MyPagerChangeListener implements ViewPager.OnPageChangeListener {
@Override
public void onPageScrollStateChanged(int arg0) {
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageSelected(int arg0) {
switch (arg0) {
case 0:
shoujian.setTextColor(getResources().getColor(R.color.colorPrimary));
fajian.setTextColor(getResources().getColor(R.color.black));
break;
case 1:
shoujian.setTextColor(getResources().getColor(R.color.black));
fajian.setTextColor(getResources().getColor(R.color.colorPrimary));
break;
}
}
}
}
activity_vpand_fm.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.administrator.main.VPandFMActivity">
<RelativeLayout
android:id="@+id/top"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#2D65B1"
android:layout_alignParentTop="true">
<ImageView
android:id="@+id/back"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_centerVertical="true"
android:layout_marginLeft="5dp"
android:src="@mipmap/back"/>
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="收件箱"
android:layout_centerInParent="true"
android:textSize="17sp"
android:textColor="@color/color_white"/>
</RelativeLayout>
<LinearLayout
android:id="@+id/menu"
android:layout_below="@+id/top"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/shoujian"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="35dp"
android:text="收件箱"
android:textColor="@color/colorPrimary"
android:gravity="center"
android:textSize="15sp"/>
<View
android:layout_width="0.7dp"
android:layout_height="match_parent"
android:layout_marginTop="5dp"
android:background="#878787"
android:layout_marginBottom="5dp"/>
<TextView
android:id="@+id/fajian"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="35dp"
android:text="收件箱"
android:gravity="center"
android:textSize="15sp"/>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="0.7dp"
android:background="#878787"/>
</LinearLayout>
<android.support.v4.view.ViewPager
android:id="@+id/myViewPager"
android:layout_below="@+id/menu"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
其中TabFragmentPagerAdapter.java
package com.example.administrator.adapter;
import java.util.List;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
public class TabFragmentPagerAdapter extends FragmentPagerAdapter {
private FragmentManager mfragmentManager;
private List<Fragment> mlist;
public TabFragmentPagerAdapter(FragmentManager fm, List<Fragment> list) {
super(fm);
this.mlist = list;
}
@Override
public Fragment getItem(int arg0) {
return mlist.get(arg0);//显示第几个页面
}
@Override
public int getCount() {
return mlist.size();//有几个页面
}
}
至于Fragment是怎么实现的就不再多说了。