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：
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：
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：
主题：
- @android:color/transparent
- @null
- true
- false
- true
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;
public class SildingFinishLayout extends RelativeLayout implements
onTouchListener {
private ViewGroup mParentView;
private View touchView;
private int mTouchSlop;
private int downX;
private int downY;
private int tempX;
private Scroller mScroller;
private int viewWidth;
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();
}
}
public void setonSildingFinishListener(
onSildingFinishListener onSildingFinishListener) {
this.onSildingFinishListener = onSildingFinishListener;
}
public void setTouchView(View touchView) {
this.touchView = touchView;
touchView.setonTouchListener(this);
}
public View getTouchView() {
return touchView;
}
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();
}
private void scrollOrigin() {
int delta = mParentView.getScrollX();
mScroller.startScroll(mParentView.getScrollX(), 0, -delta, 0,
Math.abs(delta));
postInvalidate();
}
private boolean isTouchonAbsListView() {
return touchView instanceof AbsListView ? true : false;
}
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考高分网网站的支持！
