首先要将activity设为透明背景
style:
@android:color/transparent
true
@null
<
activity android:name=".Main2Activity"
android:theme="@style/AppTheme.TransparentActivity"
>
</
activity>
SildingFinishLayout控件：
/**
* Created by Administrator on 2017/3/8.
*/
public class SildingFinishLayout extends LinearLayout implements View.OnTouchListener{
/**
* SildingFinishLayout布局的父布局
*/
private ViewGroup mParentView;
/**
* 滑动的最小距离
*/
private int mTouchSlop;
/**
* 按下点的X坐标
*/
private int downX;
/**
* 临时存储X坐标
*/
private int tempX;
/**
* 按下点的Y坐标
*/
private int downY;
/**
* 滑动类
*/
private Scroller mScroller;
/**
* SildingFinishLayout的宽度
*/
private int viewWidth;
/**
* 记录是否正在滑动
*/
private boolean isSilding;
/**
* 处理滑动逻辑的View
*/
private View touchView;
//private OnSildingFinishListener onSildingFinishListener;
private boolean isFinish;
private int dustion=0;
private OnSildingFinishListener onSildingFinishListener;
public SildingFinishLayout(Context context) {
this(context,null);
}
public SildingFinishLayout(Context context, AttributeSet attrs) {
this(context, attrs,0);
}
public SildingFinishLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
//获取滑动的最小距离
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){
//获取父布局
mParentView = (ViewGroup) this.getParent();
viewWidth = mParentView.getWidth();
}
}
/**
* 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) {
Log.d("ke","touch");
switch (event.getAction()){
case MotionEvent.ACTION_DOWN:
downX = tempX = (int) event.getX();
downY = (int) event.getY();
dustion = 0;
break;
case MotionEvent.ACTION_MOVE:
int moveX = (int)event.getX();
int deltaX = tempX - moveX;
dustion +=deltaX;
tempX = moveX;
if (Math.abs(moveX - downX) > mTouchSlop
&& Math.abs((int) event.getY() - downY) < mTouchSlop)
isSilding = true;
Log.d("ke",deltaX+" "+mTouchSlop+" "+isSilding);
// 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 (Math.abs(moveX - downX) >= 0 && isSilding) {
Log.d("kes",mParentView.getScrollX()+"scroll++:"+dustion);
// mParentView.scrollBy(deltaX, 0);
if((mParentView.getScrollX()+dustion)<0)
{
mScroller.startScroll(mParentView.getScrollX(), 0, dustion, 0,
Math.abs(deltaX));
postInvalidate();
}
// 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 / 4) {
isFinish = true;
scrollRight();
} else {
scrollOrigin();
isFinish = false;
}
break;
}
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 void setOnSildingFinishListener(OnSildingFinishListener mOnSildingFinishListener){
this.onSildingFinishListener = mOnSildingFinishListener;
}
public interface OnSildingFinishListener {
public void onSildingFinish();
}
}
@android:color/transparent
true
@null
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