Android开发中ViewFlipper(翻转视图)的基本用法(汇总)

常用的一些方法和属性

  • setInAnimation:设置View进入屏幕时使用的动画   --  android:inAnimation
  • setOutAnimation:设置View退出屏幕时使用的动画  --  android:outAnimation
  • showNext:调用该方法来显示ViewFlipper里的下一个View
  • showPrevious:调用该方法来显示ViewFlipper的上一个View
  • setFilpInterval:设置View之间切换的时间间隔   --  android:flipInterval
  • startFlipping:使用上面设置的时间间隔来开始切换所有的View,切换会循环进行
  • stopFlipping:停止View切换

效果如下(手势滑动):


1、四个切换动画效果xml(在res目录下创建anim文件夹,用来放动画效果xml)

right_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate
        android:duration="2000"
        android:fromXDelta="100%p"
        android:toXDelta="0" />

</set>

right_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate
        android:duration="2000"
        android:fromXDelta="0"
        android:toXDelta="-100%p" />

</set>

left_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate
        android:duration="2000"
        android:fromXDelta="-100%p"
        android:toXDelta="0" />

</set>

left_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate
        android:duration="2000"
        android:fromXDelta="0"
        android:toXDelta="100%p" />

</set>

2、activity_main.xml布局如下:

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

    <ViewFlipper
        android:id="@+id/main_vf"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:inAnimation="@anim/right_in"
        android:outAnimation="@anim/right_out"
        android:flipInterval="3000"></ViewFlipper>

</LinearLayout>

3、MainActivity.java代码如下:

备注:主要是自定义一个手势类接口来继承GestureListener接口,并实现其中的onFling(  )方法,然后重写onTouchEvent触发MyGestureListener里的方法。

package com.crazyboy.viewflipperdemo;

import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.ViewFlipper;

public class MainActivity extends AppCompatActivity {

    private Context mContext;
    private ViewFlipper vflp_help;
    private int[] resId = {R.mipmap.ic_help_view_1,R.mipmap.ic_help_view_2,
            R.mipmap.ic_help_view_3,R.mipmap.ic_help_view_4};

    private final static int MIN_MOVE = 200;   //最小距离
    private MyGestureListener mgListener;
    private GestureDetector mDetector;  //手势检测类

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

        mContext = MainActivity.this;
        //实例化SimpleOnGestureListener与GestureDetector对象
        mgListener = new MyGestureListener();
        mDetector = new GestureDetector(this, mgListener);
        vflp_help = findViewById(R.id.main_vf);

        //动态导入添加子View
        for(int i = 0;i < resId.length;i++){
            vflp_help.addView(getImageView(resId[i]));
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        return mDetector.onTouchEvent(event);
    }

    private ImageView getImageView(int resId){
        ImageView img = new ImageView(this);
        img.setBackgroundResource(resId);
        return img;
    }

    //自定义一个GestureListener,这个是View类下的,别写错哦!!!
    private class MyGestureListener extends GestureDetector.SimpleOnGestureListener {
        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float v, float v1) {
            if(e1.getX() - e2.getX() > MIN_MOVE){
                vflp_help.setInAnimation(mContext,R.anim.right_in);
                vflp_help.setOutAnimation(mContext, R.anim.right_out);
                vflp_help.showNext();
            }else if(e2.getX() - e1.getX() > MIN_MOVE){
                vflp_help.setInAnimation(mContext,R.anim.left_in);
                vflp_help.setOutAnimation(mContext, R.anim.left_out);
                vflp_help.showPrevious();
            }
            return true;
        }
    }

    //这个方法用于显示自动切换的效果
    public void viewFlipperNormalShow() {
        ViewFlipper viewFlipper = findViewById(R.id.main_vf);
        View viewOne = LayoutInflater.from(this).inflate(R.layout.viewflipper_view_one,null);
        View viewTwo = LayoutInflater.from(this).inflate(R.layout.viewflipper_view_two,null);
        View viewThree = LayoutInflater.from(this).inflate(R.layout.viewflipper_view_three,null);
        View viewFour = LayoutInflater.from(this).inflate(R.layout.viewflipper_view_four,null);
        viewFlipper.addView(viewOne);
        viewFlipper.addView(viewTwo);
        viewFlipper.addView(viewThree);
        viewFlipper.addView(viewFour);
        viewFlipper.startFlipping();
    }
}

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转载自blog.csdn.net/lpcrazyboy/article/details/80754887