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Android中Activity滑动关闭的效果

2019-12-12 02:56:40
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最近感觉有一个Activity关闭的效果挺不错的,就是手势滑动就可以关闭当前Activity,于是就想写一篇博客和大家一起分享下!废话不多说,老规矩,还先上效果图,更直观!

这里写图片描述

项目地址:https://github.com/xinyitiandi/SlidingFinishDemo

上代码:

1.第一个Activity:

package com.ekeguan.slidingfinishdemo;import android.content.Intent;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;public class MainActivity extends AppCompatActivity implements View.OnClickListener { private Button button; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);  initView();  initEventListener(); } private void initView() {  button = (Button) findViewById(R.id.button); } private void initEventListener() {  button.setOnClickListener(this); } @Override public void onClick(View view) {  switch(view.getId())  {   case R.id.button:    startActivity(new Intent(MainActivity.this,SecondActivity.class));    break;   default:    break;  } }}

布局文件:

<?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout 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.ekeguan.slidingfinishdemo.MainActivity"> <Button  android:id="@+id/button"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="跳转到第二个Activity"  app:layout_constraintBottom_toBottomOf="parent"  app:layout_constraintLeft_toLeftOf="parent"  app:layout_constraintRight_toRightOf="parent"  app:layout_constraintTop_toTopOf="parent" /></android.support.constraint.ConstraintLayout>

2.第二个Activity,即要跳转的目标Activity

package com.ekeguan.slidingfinishdemo;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;public class SecondActivity extends AppCompatActivity { private SildingFinishLayout mSildingFinishLayout; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_second);  initView();  initEventListener(); } private void initView() {  mSildingFinishLayout = (SildingFinishLayout) findViewById(R.id.sildingFinishLayout);  mSildingFinishLayout.setTouchView(mSildingFinishLayout); } private void initEventListener() {  mSildingFinishLayout    .setOnSildingFinishListener(new SildingFinishLayout.OnSildingFinishListener() {     @Override     public void onSildingFinish() {      finish();     }    }); }}

布局文件:

<?xml version="1.0" encoding="utf-8"?><com.ekeguan.slidingfinishdemo.SildingFinishLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/sildingFinishLayout" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center"> <FrameLayout  android:layout_width="match_parent"  android:layout_height="match_parent"  android:background="#f0f0f0">  <TextView   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:text="向右滑动关闭当前Activity"   android:layout_gravity="center"   android:textColor="#000"/> </FrameLayout></com.ekeguan.slidingfinishdemo.SildingFinishLayout>

注意:这里用到了一个自定义的布局SildingFinishLayout ,关于这个布局的代码,我一会在下面贴出,大家不用着急。需要注意的是想要滑动关闭的Activity的布局文件最外层要被SildingFinishLayout 布局包裹,被SildingFinishLayout 包裹的里面的布局设置背景色,如FrameLayout,我在这里设置了背景色为“#f0f0f0”,字体要设置字体颜色,如TextView,我在这里设置了“#000”

为了达到理想的效果,在AndroidMainfest.xml文件里面要给想要手势滑动的Activity添加上一个透明的主题,如:

<activity android:name=".SecondActivity"   android:screenOrientation="portrait"   android:theme="@style/Theme.AppCompat.Translucent"></activity>

主题:

<style name="Theme.AppCompat.Translucent">  <item name="android:windowBackground">@android:color/transparent</item>  <item name="android:colorBackgroundCacheHint">@null</item>  <item name="android:windowIsTranslucent">true</item>  <item name="windowActionBar">false</item>  <item name="windowNoTitle">true</item> </style>

好了,到这里差不多了,下面贴上自定义布局SildingFinishLayout的代码:

package com.ekeguan.slidingfinishdemo;import android.content.Context;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;import android.view.View.OnTouchListener;import android.view.ViewConfiguration;import android.view.ViewGroup;import android.widget.AbsListView;import android.widget.RelativeLayout;import android.widget.ScrollView;import android.widget.Scroller;/** * 自定义可以滑动的RelativeLayout, 类似于IOS的滑动删除页面效果,当我们要使用 * 此功能的时候,需要将该Activity的顶层布局设置为SildingFinishLayout, * 然后需要调用setTouchView()方法来设置需要滑动的View * * @author xiaanming * * @blog http://blog.csdn.net/xiaanming * */public class SildingFinishLayout extends RelativeLayout implements  OnTouchListener { /**  * SildingFinishLayout布局的父布局  */ private ViewGroup mParentView; /**  * 处理滑动逻辑的View  */ private View touchView; /**  * 滑动的最小距离  */ private int mTouchSlop; /**  * 按下点的X坐标  */ private int downX; /**  * 按下点的Y坐标  */ private int downY; /**  * 临时存储X坐标  */ private int tempX; /**  * 滑动类  */ private Scroller mScroller; /**  * SildingFinishLayout的宽度  */ private int viewWidth; /**  * 记录是否正在滑动  */ private boolean isSilding; private OnSildingFinishListener onSildingFinishListener; private boolean isFinish; public SildingFinishLayout(Context context, AttributeSet attrs) {  this(context, attrs, 0); } public SildingFinishLayout(Context context, AttributeSet attrs, int defStyle) {  super(context, attrs, defStyle);  mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();  mScroller = new Scroller(context); } @Override protected void onLayout(boolean changed, int l, int t, int r, int b) {  super.onLayout(changed, l, t, r, b);  if (changed) {   // 获取SildingFinishLayout所在布局的父布局   mParentView = (ViewGroup) this.getParent();   viewWidth = this.getWidth();  } } /**  * 设置OnSildingFinishListener, 在onSildingFinish()方法中finish Activity  *  * @param onSildingFinishListener  */ public void setOnSildingFinishListener(   OnSildingFinishListener onSildingFinishListener) {  this.onSildingFinishListener = onSildingFinishListener; } /**  * 设置Touch的View  *  * @param touchView  */ public void setTouchView(View touchView) {  this.touchView = touchView;  touchView.setOnTouchListener(this); } public View getTouchView() {  return touchView; } /**  * 滚动出界面  */ private void scrollRight() {  final int delta = (viewWidth + mParentView.getScrollX());  // 调用startScroll方法来设置一些滚动的参数,我们在computeScroll()方法中调用scrollTo来滚动item  mScroller.startScroll(mParentView.getScrollX(), 0, -delta + 1, 0,    Math.abs(delta));  postInvalidate(); } /**  * 滚动到起始位置  */ private void scrollOrigin() {  int delta = mParentView.getScrollX();  mScroller.startScroll(mParentView.getScrollX(), 0, -delta, 0,    Math.abs(delta));  postInvalidate(); } /**  * touch的View是否是AbsListView, 例如ListView, GridView等其子类  *  * @return  */ private boolean isTouchOnAbsListView() {  return touchView instanceof AbsListView ? true : false; } /**  * touch的view是否是ScrollView或者其子类  *  * @return  */ private boolean isTouchOnScrollView() {  return touchView instanceof ScrollView ? true : false; } @Override public boolean onTouch(View v, MotionEvent event) {  switch (event.getAction()) {   case MotionEvent.ACTION_DOWN:    downX = tempX = (int) event.getRawX();    downY = (int) event.getRawY();    break;   case MotionEvent.ACTION_MOVE:    int moveX = (int) event.getRawX();    int deltaX = tempX - moveX;    tempX = moveX;    if (Math.abs(moveX - downX) > mTouchSlop      && Math.abs((int) event.getRawY() - downY) < mTouchSlop) {     isSilding = true;     // 若touchView是AbsListView,     // 则当手指滑动,取消item的点击事件,不然我们滑动也伴随着item点击事件的发生     if (isTouchOnAbsListView()) {      MotionEvent cancelEvent = MotionEvent.obtain(event);      cancelEvent        .setAction(MotionEvent.ACTION_CANCEL          | (event.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT));      v.onTouchEvent(cancelEvent);     }    }    if (moveX - downX >= 0 && isSilding) {     mParentView.scrollBy(deltaX, 0);     // 屏蔽在滑动过程中ListView ScrollView等自己的滑动事件     if (isTouchOnScrollView() || isTouchOnAbsListView()) {      return true;     }    }    break;   case MotionEvent.ACTION_UP:    isSilding = false;    if (mParentView.getScrollX() <= -viewWidth / 2) {     isFinish = true;     scrollRight();    } else {     scrollOrigin();     isFinish = false;    }    break;  }  // 假如touch的view是AbsListView或者ScrollView 我们处理完上面自己的逻辑之后  // 再交给AbsListView, ScrollView自己处理其自己的逻辑  if (isTouchOnScrollView() || isTouchOnAbsListView()) {   return v.onTouchEvent(event);  }  // 其他的情况直接返回true  return true; } @Override public void computeScroll() {  // 调用startScroll的时候scroller.computeScrollOffset()返回true,  if (mScroller.computeScrollOffset()) {   mParentView.scrollTo(mScroller.getCurrX(), mScroller.getCurrY());   postInvalidate();   if (mScroller.isFinished()) {    if (onSildingFinishListener != null && isFinish) {     onSildingFinishListener.onSildingFinish();    }   }  } } public interface OnSildingFinishListener {  public void onSildingFinish(); }}

最后项目地址:https://github.com/xinyitiandi/SlidingFinishDemo

以上所述是小编给大家介绍的Android中Activity滑动关闭的效果,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对武林网网站的支持!

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