package com.cmeiyuan.hello123.swipe; import android.content.Context; import android.support.v4.view.GestureDetectorCompat; import android.support.v4.widget.ScrollerCompat; import android.util.AttributeSet; import android.util.Log; import android.util.TypedValue; import android.view.GestureDetector.OnGestureListener; import android.view.GestureDetector.SimpleOnGestureListener; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.view.ViewTreeObserver.OnGlobalLayoutListener; import android.view.animation.Interpolator; import android.widget.AbsListView; import android.widget.FrameLayout; /** * * @author baoyz * @date 2014-8-23 * */ public class SwipeMenuLayout extends FrameLayout { private static final int CONTENT_VIEW_ID = 1; private static final int MENU_VIEW_ID = 2; private static final int STATE_CLOSE = 0; private static final int STATE_OPEN = 1; private View mContentView; private SwipeMenuView mMenuView; private int mDownX; private int state = STATE_CLOSE; private GestureDetectorCompat mGestureDetector; private OnGestureListener mGestureListener; private boolean isFling; private int MIN_FLING = dp2px(15); private int MAX_VELOCITYX = -dp2px(500); private ScrollerCompat mOpenScroller; private ScrollerCompat mCloseScroller; private int mBaseX; private int position; private Interpolator mCloseInterpolator; private Interpolator mOpenInterpolator; public SwipeMenuLayout(View contentView, SwipeMenuView menuView) { this(contentView, menuView, null, null); } public SwipeMenuLayout(View contentView, SwipeMenuView menuView, Interpolator closeInterpolator, Interpolator openInterpolator) { super(contentView.getContext()); mCloseInterpolator = closeInterpolator; mOpenInterpolator = openInterpolator; mContentView = contentView; mMenuView = menuView; mMenuView.setLayout(this); init(); } // private SwipeMenuLayout(Context context, AttributeSet attrs, int // defStyle) { // super(context, attrs, defStyle); // } private SwipeMenuLayout(Context context, AttributeSet attrs) { super(context, attrs); } private SwipeMenuLayout(Context context) { super(context); } public int getPosition() { return position; } public void setPosition(int position) { this.position = position; mMenuView.setPosition(position); } private void init() { setLayoutParams(new AbsListView.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)); mGestureListener = new SimpleOnGestureListener() { @Override public boolean onDown(MotionEvent e) { isFling = false; return true; } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { // TODO if ((e1.getX() - e2.getX()) > MIN_FLING && velocityX < MAX_VELOCITYX) { isFling = true; } // Log.i("byz", MAX_VELOCITYX + ", velocityX = " + velocityX); return super.onFling(e1, e2, velocityX, velocityY); } }; mGestureDetector = new GestureDetectorCompat(getContext(), mGestureListener); // mScroller = ScrollerCompat.create(getContext(), new // BounceInterpolator()); if (mCloseInterpolator != null) { mCloseScroller = ScrollerCompat.create(getContext(), mCloseInterpolator); } else { mCloseScroller = ScrollerCompat.create(getContext()); } if (mOpenInterpolator != null) { mOpenScroller = ScrollerCompat.create(getContext(), mOpenInterpolator); } else { mOpenScroller = ScrollerCompat.create(getContext()); } LayoutParams contentParams = new LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); mContentView.setLayoutParams(contentParams); if (mContentView.getId() < 1) { mContentView.setId(CONTENT_VIEW_ID); } mMenuView.setId(MENU_VIEW_ID); mMenuView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); addView(mContentView); addView(mMenuView); // if (mContentView.getBackground() == null) { // mContentView.setBackgroundColor(Color.WHITE); // } // in android 2.x, MenuView height is MATCH_PARENT is not work. // getViewTreeObserver().addOnGlobalLayoutListener( // new OnGlobalLayoutListener() { // @Override // public void onGlobalLayout() { // setMenuHeight(mContentView.getHeight()); // // getViewTreeObserver() // // .removeGlobalOnLayoutListener(this); // } // }); } @Override protected void onAttachedToWindow() { super.onAttachedToWindow(); } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); } public boolean onSwipe(MotionEvent event) { mGestureDetector.onTouchEvent(event); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: mDownX = (int) event.getX(); isFling = false; break; case MotionEvent.ACTION_MOVE: // Log.i("byz", "downX = " + mDownX + ", moveX = " + event.getX()); int dis = (int) (mDownX - event.getX()); if (state == STATE_OPEN) { dis += mMenuView.getWidth(); } swipe(dis); break; case MotionEvent.ACTION_UP: if (isFling || (mDownX - event.getX()) > (mMenuView.getWidth() / 2)) { // open smoothOpenMenu(); } else { // close smoothCloseMenu(); return false; } break; } return true; } public boolean isOpen() { return state == STATE_OPEN; } @Override public boolean onTouchEvent(MotionEvent event) { return super.onTouchEvent(event); } private void swipe(int dis) { if (dis > mMenuView.getWidth()) { dis = mMenuView.getWidth(); } if (dis < 0) { dis = 0; } mContentView.layout(-dis, mContentView.getTop(), mContentView.getWidth() - dis, getMeasuredHeight()); mMenuView.layout(mContentView.getWidth() - dis, mMenuView.getTop(), mContentView.getWidth() + mMenuView.getWidth() - dis, mMenuView.getBottom()); } @Override public void computeScroll() { if (state == STATE_OPEN) { if (mOpenScroller.computeScrollOffset()) { swipe(mOpenScroller.getCurrX()); postInvalidate(); } } else { if (mCloseScroller.computeScrollOffset()) { swipe(mBaseX - mCloseScroller.getCurrX()); postInvalidate(); } } } public void smoothCloseMenu() { state = STATE_CLOSE; mBaseX = -mContentView.getLeft(); mCloseScroller.startScroll(0, 0, mBaseX, 0, 350); postInvalidate(); } public void smoothOpenMenu() { state = STATE_OPEN; mOpenScroller.startScroll(-mContentView.getLeft(), 0, mMenuView.getWidth(), 0, 350); postInvalidate(); } public void closeMenu() { if (mCloseScroller.computeScrollOffset()) { mCloseScroller.abortAnimation(); } if (state == STATE_OPEN) { state = STATE_CLOSE; swipe(0); } } public void openMenu() { if (state == STATE_CLOSE) { state = STATE_OPEN; swipe(mMenuView.getWidth()); } } public View getContentView() { return mContentView; } public SwipeMenuView getMenuView() { return mMenuView; } private int dp2px(int dp) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getContext().getResources().getDisplayMetrics()); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); mMenuView.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), MeasureSpec.makeMeasureSpec( getMeasuredHeight(), MeasureSpec.EXACTLY)); } @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { mContentView.layout(0, 0, getMeasuredWidth(), mContentView.getMeasuredHeight()); mMenuView.layout(getMeasuredWidth(), 0, getMeasuredWidth() + mMenuView.getMeasuredWidth(), mContentView.getMeasuredHeight()); // setMenuHeight(mContentView.getMeasuredHeight()); // bringChildToFront(mContentView); } public void setMenuHeight(int measuredHeight) { Log.i("byz", "pos = " + position + ", height = " + measuredHeight); LayoutParams params = (LayoutParams) mMenuView.getLayoutParams(); if (params.height != measuredHeight) { params.height = measuredHeight; mMenuView.setLayoutParams(mMenuView.getLayoutParams()); } } }