Android ViewPager Fragment 简单应用

深藏阁楼爱情的钟 2023-10-17 10:02 19阅读 0赞

### Android ViewPager Fragment 简单应用 ###

废话不多说，直接看代码。

#### activity\_main.xml ####

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/activity_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    
    
        <LinearLayout
            android:background="@mipmap/main_bottom"
            android:id="@+id/main_bottom"
            android:gravity="center"
            android:layout_alignParentBottom="true"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
    
            <ImageView
                android:id="@+id/main_bottom1"
                android:background="@mipmap/home1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
    
            <TextView
                android:text="            "
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
            <ImageView
                android:background="@mipmap/setting1"
                android:id="@+id/main_bottom2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
            <TextView
                android:text="            "
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
            <ImageView
                android:background="@mipmap/graph"
                android:id="@+id/main_bottom3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
            <TextView
                android:text="            "
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
            <ImageView
                android:background="@mipmap/network1"
                android:id="@+id/main_bottom4"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
        </LinearLayout>
    
        <android.support.v4.view.ViewPager
            android:id="@+id/viewpager"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_above="@id/main_bottom">
        </android.support.v4.view.ViewPager>
    
    </RelativeLayout>

#### MainActivity ####

import android.content.Intent;
    import android.support.v4.app.Fragment;
    import android.support.v4.view.ViewPager;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.MotionEvent;
    import android.view.View;
    import android.widget.ImageView;
    import java.io.DataInputStream;
    import java.io.DataOutputStream;
    import java.io.IOException;
    import java.net.Socket;
    import java.net.UnknownHostException;
    import java.util.ArrayList;
    
    public class MainActivity extends AppCompatActivity {
        
    
        ImageView view1,view2,view3,view4;
        private ViewPager viewPager;
        private ArrayList<Fragment> fragmentList; 
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            InitImageButton();
            InitViewPager(); 
        }
    
        private void InitViewPager() {
            viewPager=(ViewPager) findViewById(R.id.viewpager);
            fragmentList = new ArrayList<Fragment>();
            Fragment fragment1= new MainFragment();
    
            Fragment fragment2 = new SettingFragment();
            Fragment fragment3 = new FolderFragment();
            Fragment fragment4 = new NetworkFragment();
            fragmentList.add(fragment1);
            fragmentList.add(fragment2);
            fragmentList.add(fragment3);
            fragmentList.add(fragment4);
    
            //给ViewPager设置适配器
            viewPager.setAdapter(new MyFragmentPagerAdapter(getSupportFragmentManager(), fragmentList));
            viewPager.setCurrentItem(0);//设置当前显示标签页为第一页
            viewPager.setOnPageChangeListener(new MyOnPageChangeListener());//页面变化时的监听器
            viewPager.setOnTouchListener(new View.OnTouchListener() {
                @Override
                public boolean onTouch(View view, MotionEvent e) {
                    return false;
                }
            });
        }
    
        public void InitImageButton(){
            view1 = (ImageView)findViewById(R.id.main_bottom1);
            view2 = (ImageView)findViewById(R.id.main_bottom2);
            view3 = (ImageView)findViewById(R.id.main_bottom3);
            view4 = (ImageView)findViewById(R.id.main_bottom4);
    
            view1.setOnClickListener(new Listener(0));
            view2.setOnClickListener(new Listener(1));
            view3.setOnClickListener(new Listener(2));
            view4.setOnClickListener(new Listener(3));
        }
    
        public class Listener implements View.OnClickListener{
        
            private int index=0;
    
            public Listener(int i) {
                index =i;
            }
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                viewPager.setCurrentItem(index);
            }
        }
    
        public class MyOnPageChangeListener implements ViewPager.OnPageChangeListener {
        
            public void onPageScrollStateChanged(int arg0) {      }
    
            public void onPageScrolled(int arg0, float arg1, int arg2) {      }
    
            public void onPageSelected(int arg0) {        }
        } 
    }

#### MainFragment ####

import android.content.Context;
    import android.net.Uri;
    import android.os.Bundle;
    import android.support.v4.app.Fragment;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.Button;
    
    
    public class MainFragment extends Fragment implements View.OnClickListener{
        
    
        public MainFragment() {
    
        }
    
        public static MainFragment newInstance(String param1, String param2) {
            MainFragment fragment = new MainFragment();
            return fragment;
        }
    
        Button StartButton , StopButton;
        MainActivity mainActivity ;
    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
        }
    
        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            mainActivity = (MainActivity)getActivity();
            View view = inflater.inflate(R.layout.fragment_main, container, false);
            StartButton = (Button)view.findViewById(R.id.main_start);
            StopButton = (Button)view.findViewById(R.id.main_stop);
            StartButton.setOnClickListener(this);;
            StopButton.setOnClickListener(this);
            return view;
        }
    
        @Override
        public void onClick(View v) { 
            switch (v.getId()){
                case R.id.main_start: 
                    break;
            }
        }
    }

其他三个Fragment就不贴了，依葫芦画瓢。