今天给大家实现的功能是类似于ViewFlipper的图片滑动的效果,供大家参考,具体内容如下
现在就直接上代码吧!
代码实例:
1、xml布局文件
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.zking.laci.android20_shou.MainActivity"> <ViewFlipper android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/vf_main_image" ></ViewFlipper> </LinearLayout>
2、activity类
package com.zking.laci.android20_shou; import android.support.v4.view.GestureDetectorCompat; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.GestureDetector; import android.view.MotionEvent; import android.widget.ImageView; import android.widget.Toast; import android.widget.ViewFlipper; public class MainActivity extends AppCompatActivity{ private ViewFlipper vf_main_image; private int images[]={R.drawable.s10,R.drawable.s1,R.drawable.s7}; private GestureDetector ges; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //得到控件 vf_main_image = (ViewFlipper) findViewById(R.id.vf_main_image); for (int i = 0; i < images.length; i++) { ImageView iv=new ImageView(this); iv.setImageResource(images[i]); //将图片防区ViewFlipper中 vf_main_image.addView(iv); } //实例化一个手势检测器的类 ges = new GestureDetector(this, new GestureDetector.OnGestureListener() { @Override /** * 按下 */ public boolean onDown(MotionEvent e) { return false; } /** * 按下但是没有抬起 * @param e */ @Override public void onShowPress(MotionEvent e) { } /** * 按一下 短按 * @param e * @return */ @Override public boolean onSingleTapUp(MotionEvent e) { return false; } /** * 滑动 * @param e1 * @param e2 * @param distanceX * @param distanceY * @return */ @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { return false; } /** * 长按 * @param e */ @Override public void onLongPress(MotionEvent e) { } /** * 拖动 * @param e1 起点 * @param e2 终点 * @param velocityX x值 * @param velocityY Y值 * @return */ @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { if(e1.getX()-e2.getX()>200){ //显示下一张 vf_main_image.showNext(); //设置出去的动画 vf_main_image.setOutAnimation(MainActivity.this,R.anim.left_out); //设置进来的动画 vf_main_image.setInAnimation(MainActivity.this,R.anim.right_in); }else if(e2.getX()-e1.getX()>200){ //显示上一张 vf_main_image.showPrevious(); //设置出去的动画 vf_main_image.setOutAnimation(MainActivity.this,R.anim.right_out); //设置进来的动画 vf_main_image.setInAnimation(MainActivity.this,R.anim.left_in); } return false; } }); } @Override public boolean onTouchEvent(MotionEvent event) { //让触摸继续传递下去 return ges.onTouchEvent(event); } }
3、进入和出去的四个动画
left_out:
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" > <translate android:fromXDelta="0" android:toXDelta="-100%p" android:fromYDelta="0" android:toYDelta="-100%p" ></translate> </set>
right_in:
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" > <translate android:fromXDelta="100%p" android:toXDelta="0" android:fromYDelta="-100%p" android:toYDelta="0" ></translate> </set>
right_out:
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" > <translate android:fromXDelta="0" android:toXDelta="100%p" android:fromYDelta="0" android:toYDelta="-100%p" ></translate> </set>
left_in:
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:duration="1000" > <translate android:fromXDelta="-100%p" android:toXDelta="0" android:fromYDelta="-100%p" android:toYDelta="0" ></translate> </set>
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。