ViewPager实现滑屏切换页面及动画效果(仿优酷客户端)

时间:2023-12-13 13:17:50


找了许多实现该功能的例子,但效果都不很理想,于是自己结合网上的资源及自己的总结,整理了一下,发出来,供大家参考。这个是自己做的,仿优酷客户端的。

先看效果:

ViewPager实现滑屏切换页面及动画效果(仿优酷客户端)

ViewPager实现滑屏切换页面及动画效果(仿优酷客户端)

ViewPager实现滑屏切换页面及动画效果(仿优酷客户端)

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1.创建项目

2.设置界面layout

主界面:activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:umadsdk="http://schemas.android.com/apk/res/com.LoveBus"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ImageView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/title"
        />

    <RelativeLayout
        android:id="@+id/linearLayout1"
        android:layout_width="fill_parent"
        android:layout_height="40dip"
        android:background="#FFFFFF"
        android:orientation="vertical"
        >
<LinearLayout
        android:id="@+id/tabText"
        android:layout_marginTop="10dp"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        >
        <TextView
            android:id="@+id/text1"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1.0"
            android:gravity="center"
            android:text="个人中心"
            android:textColor="#000000"
            android:textSize="14sp" />

        <TextView
            android:id="@+id/text2"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1.0"
            android:gravity="center"
            android:text="优酷首页"
            android:textColor="#000000"
            android:textSize="14sp" />
        <TextView
            android:id="@+id/text3"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1.0"
            android:gravity="center"
            android:text="频道列表"
            android:textColor="#000000"
            android:textSize="14sp" />
        </LinearLayout>
          <ImageView
        android:id="@+id/cursor"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:scaleType="matrix"
        android:layout_alignParentBottom="true"
        android:src="@drawable/slide" />
    </RelativeLayout>
    <android.support.v4.view.ViewPager
        android:id="@+id/vPager"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_weight="1.0"
        android:background="#000000"
        android:flipInterval="30"
        android:persistentDrawingCache="animation" />
</LinearLayout>

3.设置各标签所对应的界面

频道列表:channel_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    >
     <ImageView
        android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:src="@drawable/lay3"
        />
</LinearLayout>

优酷首页:home_layout.xml

个人中心:personal_layout.xml

这两个页面跟频道列表一样,换张图片即可

3.界面做好之后,就是主程序了

MainActivity.java

package com.example.viewpaper1;

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

import android.os.Bundle;
import android.os.Parcelable;
import android.app.Activity;
import android.app.AlertDialog;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.Window;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends Activity {
	    private ViewPager mPager;//页面内容
	    private List<View> listViews; // Tab页面列表
	    private TextView t1, t2, t3;// 页卡头标
	    private int screenW ;

	    private int currIndex = 1;// 当前页卡编号
		private int ivCursorWidth;// 动画图片宽度
		private int tabWidth;// 每个tab头的宽度
		private int fromX;// 滑块儿的初始位置(距屏幕边缘的距离)
		private ImageView slideImage;//下划线图片

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);// 设置无标题模式
		setContentView(R.layout.activity_main);
		InitTextView();
		InitViewPager();
		InitImageView();

	}
	/**
     * 初始化头标
*/
    private void InitTextView() {
        t1 = (TextView) findViewById(R.id.text1);
        t2 = (TextView) findViewById(R.id.text2);
        t3 = (TextView) findViewById(R.id.text3);

        t1.setOnClickListener(new MyOnClickListener(0));
        t2.setOnClickListener(new MyOnClickListener(1));
        t3.setOnClickListener(new MyOnClickListener(2));
    }
    /**
     * 头标点击监听
*/
    public class MyOnClickListener implements View.OnClickListener {
        private int index = 0;

        public MyOnClickListener(int i) {
            index = i;
        }

        @Override
        public void onClick(View v) {
            mPager.setCurrentItem(index);
        }
    };

    /**
     * 初始化ViewPager
*/
    private void InitViewPager() {
        mPager = (ViewPager) findViewById(R.id.vPager);
        listViews = new ArrayList<View>();
        LayoutInflater mInflater = getLayoutInflater();
        View v = (View)mInflater.inflate(R.layout.personal_layout, null);

//		Button btn=(Button)v.findViewById(R.id.btn);
//		btn.setOnClickListener(new OnClickListener() {
//			@Override
//			public void onClick(View arg0) {
//				showDialog("提示", "btn");
//			}
//		});
        listViews.add(v);
        listViews.add(mInflater.inflate(R.layout.home_layout, null));
        listViews.add(mInflater.inflate(R.layout.channel_layout, null));
        mPager.setAdapter(new MyPagerAdapter(listViews));
        //设置进入系统后默认显示的页面
        mPager.setCurrentItem(1);
        mPager.setOnPageChangeListener(new MyOnPageChangeListener());
    }
    /**
     * 适配器
     * @author baiyuliang
     */
    class MyPagerAdapter extends PagerAdapter {
        public List<View> mListViews;
        public MyPagerAdapter(List<View> mListViews) {
            this.mListViews = mListViews;
        }
        @Override
        public void destroyItem(View arg0, int arg1, Object arg2) {
            ((ViewPager) arg0).removeView(mListViews.get(arg1));
        }
        @Override
        public void finishUpdate(View arg0) {
        }
        @Override
        public int getCount() {
            return mListViews.size();
        }
        @Override
        public Object instantiateItem(View arg0, int arg1) {
            ((ViewPager) arg0).addView(mListViews.get(arg1), 0);
            return mListViews.get(arg1);
        }
        @Override
        public boolean isViewFromObject(View arg0, Object arg1) {
            return arg0 == (arg1);
        }
        @Override
        public void restoreState(Parcelable arg0, ClassLoader arg1) {
        }
        @Override
        public Parcelable saveState() {
            return null;
        }
        @Override
        public void startUpdate(View arg0) {
        }
    }

    /**
	 * 初始化动画
	 */
	private void InitImageView() {
		//获取滑块儿控件
		slideImage=(ImageView) findViewById(R.id.cursor);
		DisplayMetrics dm = getResources().getDisplayMetrics();
		screenW = dm.widthPixels;// 获取分辨率宽度(屏幕宽度)
		ivCursorWidth = BitmapFactory.decodeResource(getResources(),R.drawable.slide).getWidth();// 获取滑块儿图片宽度
		//每个tab宽度为屏幕宽度/tab数量
		tabWidth = screenW / listViews.size();
		//如果滑块儿图片宽度超过每个tab的宽度时,将滑块儿宽度设置为与tab宽度相同
		if (ivCursorWidth >= tabWidth) {
			slideImage.getLayoutParams().width = tabWidth;
			ivCursorWidth = tabWidth;
			fromX=0;
		}else{
			fromX = (tabWidth - ivCursorWidth) / 2;
		}
		// 设置动画初始位置
		Matrix matrix = new Matrix();
        matrix.postTranslate( fromX+tabWidth, 0);
        slideImage.setImageMatrix(matrix);
	}
    /**
    * 页面切换监听
    */
    public class MyOnPageChangeListener implements OnPageChangeListener {
    	@Override
		public void onPageSelected(int arg0) {
    		//设置页面切换时动画偏移量
			Animation animation = new TranslateAnimation(tabWidth * currIndex-tabWidth, tabWidth * arg0-tabWidth, 0, 0);
			currIndex = arg0;
			animation.setFillAfter(true);//图片停在动画结束位置
			animation.setDuration(0);//设置动画移动毫秒数
			slideImage.startAnimation(animation);
		}
    @Override
    public void onPageScrolled(int arg0, float arg1, int arg2) {
    }
    @Override
    public void onPageScrollStateChanged(int arg0) {
    }
    }
    private void showDialog(String title,String msg){
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setIcon(android.R.drawable.ic_dialog_info);
        builder.setTitle(title);
        builder.setMessage(msg);
        builder.setPositiveButton("确定", null);
        builder.create().show();
    }
}

其中的图片大家可以自行下载,实现效果就行,还有看到很多同学再问如何给viewpaper中的每个view设置监听,在这里告诉大家一下,设置监听需要在listViews.add()之前获得控件并监听,之后再添加,否则不起作用,如本程序中隐去的btn监听。