fragment滑动界面

1.代码页面

package com.example.fragment_list_copy;

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

import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;

import com.example.fragment_list_copy.Fragment.OneFragment;
import com.example.fragment_list_copy.Fragment.ThreeFragment;
import com.example.fragment_list_copy.Fragment.TwoFragment;

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

public class MainActivity extends AppCompatActivity {
    private ViewPager viewPager;
    private LinearLayout linearLayout_points;
    private List<Fragment>  list_fragment = new ArrayList<>();
    private View point;

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

    private void init() {
        viewPager = findViewById(R.id.viewPager);
        linearLayout_points = findViewById(R.id.point_linearLayout);
        list_fragment.add(new OneFragment());  /** 实例化Frament 并放入list_fragment*/
        list_fragment.add(new TwoFragment());
        list_fragment.add(new ThreeFragment());
        viewPager.setAdapter(new  MyAdapyer(getSupportFragmentManager()));

        for (int i = 0;i<list_fragment.size();i++){
            point = new View(this);
            point.setBackgroundResource(R.drawable.ic_launcher_background); /** 指定小圆点的选择器*/
            point.setEnabled(false); /** 设置小圆点为白色*/
            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(10,10);/** 设置小圆点大小*/
            layoutParams.leftMargin = 10;  /** 设置小圆点左边距*/
            linearLayout_points.addView(point,layoutParams);   /** 将小圆点添加到布局*/
        }
        linearLayout_points.getChildAt(0).setEnabled(true); /** 得到第一个小圆点并设置为红色*/
        /**
         * 为viewPager 设置监听
         */
        viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

            }
            @Override
            public void onPageSelected(int position) {
                /**
                 * 当显示的页面变更的时候  循环遍历
                 * 将与选中页面对应的小圆点变为红色，其他变为白色
                 */
                for (int i = 0;i<list_fragment.size();i++){
                    if (i == position){
                        linearLayout_points.getChildAt(i).setEnabled(true);
                    }else {
                        linearLayout_points.getChildAt(i).setEnabled(false);
                    }
                }
            }

            @Override
            public void onPageScrollStateChanged(int state) {

            }
        });
    }
    /**
     * 重写 FragmentPagerAdapter
     * MyAdapter 、getCount 、getItem
     *
     */

    private class MyAdapyer extends FragmentPagerAdapter {
        public MyAdapyer(android.support.v4.app.FragmentManager fragmentManager) {
            super(fragmentManager);
        }

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

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

2.主布局页面

<?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"
    android:orientation="vertical"

    tools:context="com.example.fragment_list_copy.MainActivity">
<include layout=""
    <android.support.v4.view.ViewPager
        android:id="@+id/viewPager"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </android.support.v4.view.ViewPager>
    <LinearLayout
        android:id="@+id/point_linearLayout"
        android:orientation="horizontal"
        android:gravity="center"
        android:layout_marginBottom="40dp"
        android:layout_alignParentBottom="true"
        android:layout_width="match_parent"
        android:layout_height="40dp">

    </LinearLayout>

</RelativeLayout>

3.创建三个小页面

1.package com.example.fragment_list_copy.Fragment;

import android.os.Bundle;
import android.os.TokenWatcher;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import com.example.fragment_list_copy.R;

/**
 * A simple {@link Fragment} subclass.
 */
public class OneFragment extends Fragment {
    public OneFragment() {
        // Required empty public constructor
    }
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
      return  inflater.inflate(R.layout.fragment_one,container, false);

    }

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Toast.makeText(getActivity(), "=========", Toast.LENGTH_SHORT).show();
    }
}
2.

package com.example.fragment_list_copy.Fragment;

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

import com.example.fragment_list_copy.R;

/**
 * A simple {@link Fragment} subclass.
 */
public class TwoFragment extends Fragment {

    public TwoFragment() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return  inflater.inflate(R.layout.fragment_two,container, false);

    }

}
3.

package com.example.fragment_list_copy.Fragment;

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

import com.example.fragment_list_copy.R;

/**
 * A simple {@link Fragment} subclass.
 */
public class ThreeFragment extends Fragment {

    public ThreeFragment() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return  inflater.inflate(R.layout.fragment_three,container, false);
    }

}

4.小页面的布局代码

第一个小页面中有五个button

1<FrameLayout 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.example.fragment_list_copy.Fragment.OneFragment"
             android:background="#00aaaa"
    >

    <!-- TODO: Update blank fragment layout -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </LinearLayout>

    <LinearLayout
        android:layout_marginBottom="10dp"
        android:gravity="bottom|center"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <Button
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="环境指标"
            android:id="@+id/bt_hjzb"
            />
        <Button
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="历史数据"
            android:id="@+id/bt_lssj"/>
        <Button
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="手动控制"
            android:id="@+id/bt_sdkz"
            />
        <Button

            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="系统设置"
            android:id="@+id/bt_xtsz"
            />

        <Button
            android:id="@+id/bt_cy"
            android:layout_weight="1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="创意设计"
            />
    </LinearLayout>

</FrameLayout>
2.

<FrameLayout 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.example.fragment_list_copy.Fragment.TwoFragment"
                android:background="#ba55"
    >

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="@string/hello_blank_fragment"/>

</FrameLayout>
3.

<FrameLayout 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.example.fragment_list_copy.Fragment.ThreeFragment"
            android:background="#ccc3"
    >

    <!-- TODO: Update blank fragment layout -->
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="@string/hello_blank_fragment"/>

</FrameLayout>