From 8f5837b3c9ca738ad97ef7aa5b543795da48350d Mon Sep 17 00:00:00 2001 From: zengfantian Date: Mon, 16 Mar 2015 00:04:31 +0800 Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E4=B8=8B=E6=8B=89=E5=85=B3?= =?UTF-8?q?=E9=97=ADActivity=E6=8E=A7=E4=BB=B6?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../android/view/PullDownRemoveLayout.java | 241 ++++++++++++++++++ 1 file changed, 241 insertions(+) create mode 100644 src/com/zftlive/android/view/PullDownRemoveLayout.java diff --git a/src/com/zftlive/android/view/PullDownRemoveLayout.java b/src/com/zftlive/android/view/PullDownRemoveLayout.java new file mode 100644 index 0000000..b62dc00 --- /dev/null +++ b/src/com/zftlive/android/view/PullDownRemoveLayout.java @@ -0,0 +1,241 @@ +package com.zftlive.android.view; + +import java.util.LinkedList; +import java.util.List; + +import com.zftlive.android.R; + +import android.app.Activity; +import android.content.Context; +import android.content.res.TypedArray; +import android.graphics.Canvas; +import android.graphics.Rect; +import android.graphics.drawable.Drawable; +import android.support.v4.view.ViewPager; +import android.util.AttributeSet; +import android.util.Log; +import android.view.MotionEvent; +import android.view.View; +import android.view.ViewConfiguration; +import android.view.ViewGroup; +import android.widget.FrameLayout; +import android.widget.Scroller; + +/** + * 下拉关闭当前Activity，解决掉Listview、ScrollView、ViewPager事件冲突问题 + * + * @author 曾繁添&&xiaanming + * @blog http://blog.csdn.net/xiaanming + * + */ +public class PullDownRemoveLayout extends FrameLayout { + private static final String TAG = PullDownRemoveLayout.class.getSimpleName(); + private View mContentView; + private int mTouchSlop; + private int downX; + private int downY; + private int tempY; + private Scroller mScroller; + private int viewHeight; + private boolean isSilding; + private boolean isFinish; + private Drawable mShadowDrawable; + private Activity mActivity; + private List mViewPagers = new LinkedList(); + + public PullDownRemoveLayout(Context context, AttributeSet attrs) { + this(context, attrs, 0); + } + + public PullDownRemoveLayout(Context context, AttributeSet attrs, int defStyle) { + super(context, attrs, defStyle); + + mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop(); + mScroller = new Scroller(context); + + mShadowDrawable = getResources().getDrawable(R.drawable.view_swipeback_shadow_left); + } + + + public void attachToActivity(Activity activity) { + mActivity = activity; + TypedArray a = activity.getTheme().obtainStyledAttributes( + new int[] { android.R.attr.windowBackground }); + int background = a.getResourceId(0, 0); + a.recycle(); + + ViewGroup decor = (ViewGroup) activity.getWindow().getDecorView(); + ViewGroup decorChild = (ViewGroup) decor.getChildAt(0); + decorChild.setBackgroundResource(background); + decor.removeView(decorChild); + addView(decorChild); + setContentView(decorChild); + decor.addView(this); + } + + private void setContentView(View decorChild) { + mContentView = (View) decorChild.getParent(); + } + + /** + * 事件拦截操作 + */ + @Override + public boolean onInterceptTouchEvent(MotionEvent ev) { + //处理ViewPager冲突问题 + ViewPager mViewPager = getTouchViewPager(mViewPagers, ev); + Log.i(TAG, "mViewPager = " + mViewPager); + + if(mViewPager != null && mViewPager.getCurrentItem() != 0){ + return super.onInterceptTouchEvent(ev); + } + + switch (ev.getAction()) { + case MotionEvent.ACTION_DOWN: + downY = tempY = (int) ev.getRawY(); + downX = (int) ev.getRawX(); + break; + case MotionEvent.ACTION_MOVE: + int moveY = (int) ev.getRawY(); + // 满足此条件屏蔽SildingFinishLayout里面子类的touch事件 + if (moveY - downY > mTouchSlop + && Math.abs((int) ev.getRawX() - downX) < mTouchSlop) { + return true; + } + break; + } + + return super.onInterceptTouchEvent(ev); + } + + @Override + public boolean onTouchEvent(MotionEvent event) { + switch (event.getAction()) { + case MotionEvent.ACTION_MOVE: + int moveY = (int) event.getRawY(); + int deltaY = tempY - moveY; + tempY = moveY; + if (moveY - downY > mTouchSlop + && Math.abs((int) event.getRawX() - downX) < mTouchSlop) { + isSilding = true; + } + + if (moveY - downY >= 0 && isSilding) { + mContentView.scrollBy(0, deltaY); + } + break; + case MotionEvent.ACTION_UP: + isSilding = false; + //TODO 控制下拉高度多少执行移除操作（默认下拉到屏幕高度1/3） + if (mContentView.getScrollY() <= -viewHeight / 3) { + isFinish = true; + scrollRight(); + } else { + scrollOrigin(); + isFinish = false; + } + break; + } + + return true; + } + + /** + * 获取SwipeBackLayout里面的ViewPager的集合 + * @param mViewPagers + * @param parent + */ + private void getAlLViewPager(List mViewPagers, ViewGroup parent){ + int childCount = parent.getChildCount(); + for(int i=0; i mViewPagers, MotionEvent ev){ + if(mViewPagers == null || mViewPagers.size() == 0){ + return null; + } + Rect mRect = new Rect(); + for(ViewPager v : mViewPagers){ + v.getHitRect(mRect); + + if(mRect.contains((int)ev.getX(), (int)ev.getY())){ + return v; + } + } + return null; + } + + @Override + protected void onLayout(boolean changed, int l, int t, int r, int b) { + super.onLayout(changed, l, t, r, b); + if (changed) { + viewHeight = this.getHeight(); + + getAlLViewPager(mViewPagers, this); + Log.i(TAG, "ViewPager size = " + mViewPagers.size()); + } + } + + @Override + protected void dispatchDraw(Canvas canvas) { + super.dispatchDraw(canvas); + if (mShadowDrawable != null && mContentView != null) { + + int left = mContentView.getLeft()- mShadowDrawable.getIntrinsicWidth(); + int right = left + mShadowDrawable.getIntrinsicWidth(); + int top = mContentView.getTop(); + int bottom = mContentView.getBottom(); + + mShadowDrawable.setBounds(left, top, right, bottom); + mShadowDrawable.draw(canvas); + } + + } + + + /** + * 滚动出界面 + */ + private void scrollRight() { + final int delta = (viewHeight + mContentView.getScrollY()); + // 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(0, mContentView.getScrollY(), 0, -delta + 1,Math.abs(delta)); + postInvalidate(); + } + + /** + * 滚动到起始位置 + */ + private void scrollOrigin() { + int delta = mContentView.getScrollX(); + mScroller.startScroll(0, mContentView.getScrollX(), 0, -delta,Math.abs(delta)); + postInvalidate(); + } + + @Override + public void computeScroll() { + // 调用startScroll的时候scroller.computeScrollOffset()返回true， + if (mScroller.computeScrollOffset()) { + mContentView.scrollTo(mScroller.getCurrX(), mScroller.getCurrY()); + postInvalidate(); + + if (mScroller.isFinished() && isFinish) { + mActivity.finish(); + } + } + } +}