Android基于ViewPager实现类似微信页面切换效果

<?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">  <!--页卡-->  <android.support.v4.view.ViewPager   android:id="@+id/view1"   android:layout_width="wrap_content"   android:layout_height="wrap_content">   <!--页卡标题-->   <!--PagerTitleStrip和PagerTabStrip功能差不多一致，使用了PagerTitleStrip那PagerTabStrip会失效-->   <android.support.v4.view.PagerTabStrip    android:id="@+id/pagerTabStrip"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    />  </android.support.v4.view.ViewPager>  </RelativeLayout> 

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent">   <ImageView   android:id="@+id/img1"   android:layout_height="wrap_content"   android:layout_width="wrap_content"   android:background="@drawable/img1"   android:layout_marginLeft="30dp"/>  </LinearLayout> 

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent">   <ImageView   android:id="@+id/img2"   android:layout_height="match_parent"   android:layout_width="match_parent"   android:background="@drawable/img2"/>  </LinearLayout> 

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent">  <ImageView   android:id="@+id/img3"   android:layout_height="match_parent"   android:layout_width="match_parent"   android:background="@drawable/img3"/> </LinearLayout> 

package com.rui.viewpagerdemo;  import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup;  /**  * Created by qqazl001 on 2018/3/26.  */  public class MyFragment1 extends Fragment{  @Nullable  @Override  public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {   //布局文件转成View   //参数1：Fragment需要加载的布局文件   //参数2：加载layout的父ViewGroup   //参数1：是否返回父ViewGroup对象，false为不   View view = inflater.inflate(R.layout.view1,container,false);   return view;  } } 

package com.rui.viewpagerdemo;  import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup;  /**  * Created by qqazl001 on 2018/3/26.  */  public class MyFragment2 extends Fragment{  @Nullable  @Override  public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {   //布局文件转成View   //参数1：Fragment需要加载的布局文件   //参数2：加载layout的父ViewGroup   //参数1：是否返回父ViewGroup对象，false为不   View view = inflater.inflate(R.layout.view2,container,false);   return view;  } } 

package com.rui.viewpagerdemo;  import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup;  /**  * Created by qqazl001 on 2018/3/26.  */  public class MyFragment3 extends Fragment{  @Nullable  @Override  public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {   //布局文件转成View   //参数1：Fragment需要加载的布局文件   //参数2：加载layout的父ViewGroup   //参数1：是否返回父ViewGroup对象，false为不   View view = inflater.inflate(R.layout.view3,container,false);   return view;  } } 

package com.rui.viewpagerdemo;  import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.view.PagerAdapter; import android.view.View; import android.view.ViewGroup;  import java.util.ArrayList; import java.util.List;  /**  * Created by qqazl001 on 2018/3/26.  */  public class MyAdapter extends FragmentPagerAdapter{  List<Fragment> listFragment;  List<String> listTab = new ArrayList<String>();   public MyAdapter(FragmentManager fm,List<Fragment> listFragment,List<String>listTab) {   super(fm);   this.listFragment=listFragment;   this.listTab=listTab;  }    @Override  public CharSequence getPageTitle(int position) {   //返回标题名称   return listTab.get(position);  }   @Override  public Fragment getItem(int position) {   //返回页面内容   return listFragment.get(position);  }   @Override  public int getCount() {   //一共多少个页面   return listFragment.size();  } } 

package com.rui.viewpagerdemo;  import android.annotation.SuppressLint; import android.graphics.Color; import android.support.v4.app.Fragment; import android.support.v4.view.PagerTabStrip; import android.support.v4.view.ViewPager; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Toast;  import java.util.ArrayList; import java.util.List; //调用接口监听，并实现方法 public class MainActivity extends AppCompatActivity implements ViewPager.OnPageChangeListener{  private List<Fragment> listFragment;//声明List，存放Fagment  private ViewPager viewPager;//声明ViewPager  private PagerTabStrip pagerTabStrip;//声明PagerTabStrip  private List<String> listTab;//声明List,存放标题   @SuppressLint("ResourceType")  @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);   //实例化List   listFragment = new ArrayList<Fragment>();   //view加入list   listFragment.add(new MyFragment1());   listFragment.add(new MyFragment2());   listFragment.add(new MyFragment3());   //标题加入list   listTab = new ArrayList<String>();   listTab.add("第一页");   listTab.add("第二页");   listTab.add("第三页");    //为PagerTabStrip设置属性   pagerTabStrip = (PagerTabStrip)findViewById(R.id.pagerTabStrip);   //pagerTabStrip.setBackgroundColor(color.white); 设置背景色   pagerTabStrip.setTextColor(Color.RED); //设置标题文字颜色   pagerTabStrip.setDrawFullUnderline(false);//是否显示一条横线   pagerTabStrip.setTabIndicatorColor(Color.GREEN);//标题下的短粗线颜色    //实例化适配器   MyAdapter myAdapter = new MyAdapter(getSupportFragmentManager(),listFragment,listTab);   //实例化ViewPager   viewPager = (ViewPager) findViewById(R.id.view1);   //为viewPager加载适配器   viewPager.setAdapter(myAdapter);   //加载监听事件   viewPager.addOnPageChangeListener(this);  }    @Override  public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {   // position-点击滑动的界面的位置    // positionOffset-点击页面占整个屏幕的百分比    // positionOffsetPixels-屏幕像素的位置  }   @Override  public void onPageSelected(int position) {   //滑动到第几页   Toast.makeText(MainActivity.this,"第"+(position+1)+"页",Toast.LENGTH_SHORT).show();  }   @Override  public void onPageScrollStateChanged(int state) {   //state:滑动状态    //当页面停止的时候该参数为0，页面开始滑动的时候变成了1，    //当手指从屏幕上抬起变为了2（无论页面是否从1跳到了2），当页面静止后又变成了0    //只在0，1，2三个数字之间切换.  } }