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！
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脚本之家网站的支持！