本文实例为大家分享了Android答题器翻页功能，主要使用ViewFilpper和GestureDetector来实现，供大家参考，具体内容如下
1.效果图
2.实现思路
把Activity的TouchEvent事件交个GestureDetector来处理，然后使用ViewFilpper使用动画控制多个组件的之间的切换效果。手势的一个Api就不详细说了，大家如果不了解可以查一下。
3.实现的步骤
1）、构建手势检测器2）、准备数据3）、为ViewFilpper添加子控件。4）、初始化Animation数组5）、把Activity的TouchEvent事件交个GestureDetector来处理6）、实现 onFling方法
4.代码实现
4.1布局文件
<?xml version="1.0" encoding="utf-8"?><LinearLayout 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" android:orientation="vertical" tools:context="com.lidong.demo.view.GestureFilpActivity"> <ViewFlipper android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/viewFlipper"/></LinearLayout>
4.2 动画文件
left_in.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="100%p" android:toXDelta="0" android:duration="500" /></set>
left_out.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="0" android:toXDelta="-100%p" android:duration="500" /></set>
right_in.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="-100%p" android:toXDelta="0" android:duration="500" /></set>
right_out.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="0" android:toXDelta="100%p" android:duration="500" /></set>
4.3GestureFilpActivity的实现
package com.lidong.demo.view;import android.os.Bundle;import android.view.GestureDetector;import android.view.MotionEvent;import android.view.View;import android.view.animation.Animation;import android.view.animation.AnimationUtils;import android.widget.AdapterView;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;import android.widget.ViewFlipper;import com.lidong.demo.AppComponent;import com.lidong.demo.BaseActivity;import com.lidong.demo.R;import com.lidong.demo.view.adapter.ChineseMedicineReportAdapter;import com.lidong.demo.view.model.Question;import java.util.ArrayList;import java.util.List;import butterknife.Bind;import butterknife.ButterKnife;/***@类名 : GestureFilpActivity*@描述 : *@时间 : 2016/5/3 16:11*@作者: 李东*@邮箱 : lidong@chni.com.cn*@company: chni*/public class GestureFilpActivity extends BaseActivity implements GestureDetector.OnGestureListener{ @Bind(R.id.viewFlipper) ViewFlipper mViewFlipper; //1.定义手势检测器对象 GestureDetector mGestureDetector; //2.定义一个动画数组，用于为ViewFilpper指定切换动画效果。 Animation[] animations = new Animation[4]; //3.定义手势两点之间的最小距离 final int FLIP_DISTANCE = 50 ; List<Question> mQuestion = new ArrayList<>(); ChineseMedicineReportAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_gesture_filp); ButterKnife.bind(this); setActivityTitle("答题器的实现"); //1.构建手势检测器 mGestureDetector = new GestureDetector(this,this); //2准备数据 List<Question> questions = initData(); mQuestion.addAll(questions); //3.为ViewFilpper添加子控件。 for (int i = 0;i<mQuestion.size();i++){ Question question = mQuestion.get(i); mViewFlipper.addView(addQuestionView(question)); } //4.初始化Animation数组 animations[0] = AnimationUtils.loadAnimation(this,R.anim.left_in); animations[1] = AnimationUtils.loadAnimation(this,R.anim.left_out); animations[2] = AnimationUtils.loadAnimation(this,R.anim.right_in); animations[3] = AnimationUtils.loadAnimation(this,R.anim.right_out); } @Override protected void setupActivityComponent(AppComponent appComponent) { } private View addQuestionView(Question question){ View view = View.inflate(this, R.layout.activity_chnihealthreport, null); TextView tes = (TextView) view.findViewById(R.id.tv_question); ListView listview = (ListView) view.findViewById(R.id.lv_question_answer); adapter = new ChineseMedicineReportAdapter(this,question); listview.setAdapter(adapter); tes.setText(question.getQuestion()); listview.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Toast.makeText(GestureFilpActivity.this,position+"",Toast.LENGTH_SHORT).show(); Toast.makeText(GestureFilpActivity.this,position+"",Toast.LENGTH_SHORT).show(); if (mViewFlipper.getDisplayedChild() == mQuestion.size() - 1) { Toast.makeText(GestureFilpActivity.this,"最后一个题",Toast.LENGTH_SHORT).show(); mViewFlipper.stopFlipping(); return; }else { mViewFlipper.setInAnimation(animations[0]); mViewFlipper.setOutAnimation(animations[1]); mViewFlipper.showNext(); } } }); return view; } @Override public boolean onDown(MotionEvent e) { return false; } @Override public void onShowPress(MotionEvent e) { } @Override public boolean onSingleTapUp(MotionEvent e) { return false; } @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { return false; } @Override public void onLongPress(MotionEvent e) { } //重点实现在这里切换 @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { if (e2.getX() - e1.getX()>FLIP_DISTANCE){ if (mViewFlipper.getDisplayedChild() == 0) { mViewFlipper.stopFlipping(); Toast.makeText(GestureFilpActivity.this,"第一个题",Toast.LENGTH_SHORT).show(); return false; } else { mViewFlipper.setInAnimation(animations[2]); mViewFlipper.setOutAnimation(animations[3]); mViewFlipper.showPrevious(); return true; } }else if (e1.getX() - e2.getX()>FLIP_DISTANCE){ if (mViewFlipper.getDisplayedChild() == mQuestion.size() - 1) { Toast.makeText(GestureFilpActivity.this,"最后一个题",Toast.LENGTH_SHORT).show(); mViewFlipper.stopFlipping(); return false; }else { mViewFlipper.setInAnimation(animations[0]); mViewFlipper.setOutAnimation(animations[1]); mViewFlipper.showNext(); return true; } } return false; } @Override public boolean onTouchEvent(MotionEvent event) { //将Activity上的触发的事件交个GestureDetector处理 return this.mGestureDetector.onTouchEvent(event); } private List<Question> initData(){ List<Question> questions = new ArrayList<>(); Question q1 = new Question(); q1.setQuestion("1、\"红娘\"由来是出自下列哪部古典名剧:"); List<Question.Answer> mA = new ArrayList<>(); Question.Answer a1 = new Question.Answer(); a1.setAnswerMessage("A《琵琶记》"); Question.Answer a2 = new Question.Answer(); a2.setAnswerMessage("B《西厢记》"); Question.Answer a3 = new Question.Answer(); a3.setAnswerMessage("C《长生殿》"); Question.Answer a4 = new Question.Answer(); a4.setAnswerMessage("D《桃花扇》"); mA.add(a1); mA.add(a2); mA.add(a3); mA.add(a4); q1.setAnswer(mA); questions.add(q1); Question q2 = new Question(); q2.setQuestion("2.我国第一部有声影片是："); List<Question.Answer> mB = new ArrayList<>(); Question.Answer b1 = new Question.Answer(); b1.setAnswerMessage("A《歌女红牡丹》"); Question.Answer b2 = new Question.Answer(); b2.setAnswerMessage("B《定军山》"); Question.Answer b3 = new Question.Answer(); b3.setAnswerMessage("C《林则徐》"); Question.Answer b4 = new Question.Answer(); b4.setAnswerMessage("D《玉人何处》"); mB.add(b1); mB.add(b2); mB.add(b3); mB.add(b4); q2.setAnswer(mB); questions.add(q2); Question q3= new Question(); q3.setQuestion("3.下列哪座山不属于我国四大佛山之一：（ A）"); List<Question.Answer> mC = new ArrayList<>(); Question.Answer c1 = new Question.Answer(); c1.setAnswerMessage("A《歌女红牡丹》"); Question.Answer c2 = new Question.Answer(); c2.setAnswerMessage("B《定军山》"); Question.Answer c3 = new Question.Answer(); c3.setAnswerMessage("C《林则徐》"); Question.Answer c4 = new Question.Answer(); c4.setAnswerMessage("D《玉人何处》"); mC.add(c1); mC.add(c2); mC.add(c3); mC.add(c4); q3.setAnswer(mC); questions.add(q3); Question q4 = new Question(); q4.setQuestion("4.下面哪个是对“惊蛰”这个节气的正确描述？"); List<Question.Answer> mD = new ArrayList<>(); Question.Answer d1 = new Question.Answer(); d1.setAnswerMessage("A《歌女红牡丹》"); Question.Answer d2 = new Question.Answer(); d2.setAnswerMessage("B《定军山》"); Question.Answer d3 = new Question.Answer(); d3.setAnswerMessage("C《林则徐》"); Question.Answer d4 = new Question.Answer(); d4.setAnswerMessage("D《玉人何处》"); mD.add(d1); mD.add(d2); mD.add(d3); mD.add(d4); q4.setAnswer(mD); questions.add(q4); return questions; }}
5.总结
1.构建手势检测器，2准备数据，3为ViewFilpper添加子控件。4.初始化Animation数组。5.把Activity的TouchEvent事件交个GestureDetector来处理,6.实现onFling方法。
代码下载：Android实现答题器翻页效果
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