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 Android教程網 >> Android技術 >> 關於Android編程 >> Android通過手勢實現答題器翻頁效果

Android通過手勢實現答題器翻頁效果

編輯：關於Android編程

本文實例為大家分享了Android答題器翻頁功能，主要使用ViewFilpper和GestureDetector來實現，供大家參考，具體內容如下

1.效果圖

2.實現思路

把Activity的TouchEvent事件交個GestureDetector來處理，然後使用ViewFilpper使用動畫控制多個組件的之間的切換效果。手勢的一個Api就不詳細說了，大家如果不了解可以查一下。

3.實現的步驟

1）、構建手勢檢測器
2）、准備數據
3）、為ViewFilpper添加子控件。
4）、初始化Animation數組
5）、把Activity的TouchEvent事件交個GestureDetector來處理
6）、實現 onFling方法

4.代碼實現

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 動畫文件

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的實現

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;
/**
*@類名 : GestureFilpActivity
*@描述 : 
*@時間 : 2016/5/3 16:11
*@作者: 李東
*@郵箱 : [email protected]
*@company: chni
*/
public class GestureFilpActivity extends BaseActivity implements GestureDetector.OnGestureListener{

 @Bind(R.id.viewFlipper)
 ViewFlipper mViewFlipper;
 //1.定義手勢檢測器對象
 GestureDetector mGestureDetector;
 //2.定義一個動畫數組，用於為ViewFilpper指定切換動畫效果。
 Animation[] animations = new Animation[4];
 //3.定義手勢兩點之間的最小距離
 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("答題器的實現");
  //1.構建手勢檢測器
  mGestureDetector = new GestureDetector(this,this);
  //2准備數據
  List<Question> questions = initData();
  mQuestion.addAll(questions);
  //3.為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數組
  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,"最後一個題",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) {

 }
  //重點實現在這裡切換
 @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,"第一個題",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,"最後一個題",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) {
  //將Activity上的觸發的事件交個GestureDetector處理
  return this.mGestureDetector.onTouchEvent(event);
 }

 private List<Question> initData(){
  List<Question> questions = new ArrayList<>();
  Question q1 = new Question();
  q1.setQuestion("1、\"紅娘\"由來是出自下列哪部古典名劇:");
  List<Question.Answer> mA = new ArrayList<>();
  Question.Answer a1 = new Question.Answer();
  a1.setAnswerMessage("A《琵琶記》");
  Question.Answer a2 = new Question.Answer();
  a2.setAnswerMessage("B《西廂記》");
  Question.Answer a3 = new Question.Answer();
  a3.setAnswerMessage("C《長生殿》");
  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.我國第一部有聲影片是：");
  List<Question.Answer> mB = new ArrayList<>();
  Question.Answer b1 = new Question.Answer();
  b1.setAnswerMessage("A《歌女紅牡丹》");
  Question.Answer b2 = new Question.Answer();
  b2.setAnswerMessage("B《定軍山》");
  Question.Answer b3 = new Question.Answer();
  b3.setAnswerMessage("C《林則徐》");
  Question.Answer b4 = new Question.Answer();
  b4.setAnswerMessage("D《玉人何處》");
  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.下列哪座山不屬於我國四大佛山之一：（ A）");
  List<Question.Answer> mC = new ArrayList<>();
  Question.Answer c1 = new Question.Answer();
  c1.setAnswerMessage("A《歌女紅牡丹》");
  Question.Answer c2 = new Question.Answer();
  c2.setAnswerMessage("B《定軍山》");
  Question.Answer c3 = new Question.Answer();
  c3.setAnswerMessage("C《林則徐》");
  Question.Answer c4 = new Question.Answer();
  c4.setAnswerMessage("D《玉人何處》");
  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.下面哪個是對“驚蟄”這個節氣的正確描述？");
  List<Question.Answer> mD = new ArrayList<>();
  Question.Answer d1 = new Question.Answer();
  d1.setAnswerMessage("A《歌女紅牡丹》");
  Question.Answer d2 = new Question.Answer();
  d2.setAnswerMessage("B《定軍山》");
  Question.Answer d3 = new Question.Answer();
  d3.setAnswerMessage("C《林則徐》");
  Question.Answer d4 = new Question.Answer();
  d4.setAnswerMessage("D《玉人何處》");
  mD.add(d1);
  mD.add(d2);
  mD.add(d3);
  mD.add(d4);
  q4.setAnswer(mD);
  questions.add(q4);

  return questions;
 }
}

5.總結

1.構建手勢檢測器，2准備數據，3為ViewFilpper添加子控件。4.初始化Animation數組。5.把Activity的TouchEvent事件交個GestureDetector來處理,6.實現onFling方法。

代碼下載：Android實現答題器翻頁效果

以上就是本文的全部內容，希望對大家學習Android軟件編程有所幫助。

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