十年网站开发经验 + 多家企业客户 + 靠谱的建站团队
量身定制 + 运营维护+专业推广+无忧售后,网站问题一站解决
效果图如下:
我们提供的服务有:网站建设、成都网站建设、微信公众号开发、网站优化、网站认证、土默特左旗ssl等。为近千家企事业单位解决了网站和推广的问题。提供周到的售前咨询和贴心的售后服务,是有科学管理、有技术的土默特左旗网站制作公司
方法一(实现原理,主要依靠移动动画
private OnTouchListener gonggaoOnTouch() { return new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub switch (event.getAction()) { case MotionEvent.ACTION_DOWN: { break; } case MotionEvent.ACTION_UP: { if (mAdsV.getTop() == mSlipRl.getTop() && moveY < 0) { topTag(); } else if (moveY < -200) { topTag(); } else { nextTag(); } break; } } gestureDetector.onTouchEvent(event); return true; } private void topTag() { animBuilder.setDurationMillis(400).setFromYValue(formY) .setToYValue(mAdsV.getTop() - mSlipRl.getTop()); bgMoveAnim = animBuilder.build(); bgMoveAnim.setAnimationListener(new AnimationListener() { @Override public void onAnimationStart(Animation animation) { // TODO Auto-generated method stub } @Override public void onAnimationRepeat(Animation animation) { // TODO Auto-generated method stub } @Override public void onAnimationEnd(Animation animation) { // TODO Auto-generated method stub mSlipRl.clearAnimation(); setLayout(mSlipRl, 0, mAdsV.getTop(), 0); mSlipRl.invalidate(); } }); mSlipRl.startAnimation(bgMoveAnim); } private void nextTag() { animBuilder.setDurationMillis(400).setFromYValue(formY) .setToYValue(mAdsV.getBottom() - mSlipRl.getTop()); bgMoveAnim = animBuilder.build(); bgMoveAnim.setAnimationListener(new AnimationListener() { @Override public void onAnimationStart(Animation animation) { // TODO Auto-generated method stub } @Override public void onAnimationRepeat(Animation animation) { // TODO Auto-generated method stub } @Override public void onAnimationEnd(Animation animation) { // TODO Auto-generated method stub mSlipRl.clearAnimation(); setLayout(mSlipRl, 0, mAdsV.getBottom(), 0); mSlipRl.invalidate(); } }); mSlipRl.startAnimation(bgMoveAnim); } }; }
方法二,主要代码如下:
@Override public boolean dispatchTouchEvent(MotionEvent event) { // TODO Auto-generated method stub switch (event.getAction()) { case MotionEvent.ACTION_DOWN: lastY = event.getY(); if(null==mLocationSlip||null==mSlipDown||null==mSlipMove){ mLocationSlip = this.findViewById(R.id.location_slip); mSlipDown = this.findViewById(R.id.down_slip); mSlipMove = this.findViewById(R.id.move_slip); } top = mSlipMove.getTop(); bottom = mSlipDown.getBottom(); if (top <= lastY && lastY <= (bottom + top)) { isMove = true; return true; } case MotionEvent.ACTION_MOVE: if (isMove) { float newY = event.getY(); int ay = (int) ((lastY - newY) * 0.5); lastY = newY; mSlipMove.offsetTopAndBottom(-ay); } break; case MotionEvent.ACTION_UP: if (isMove) { isMove = false; top = mSlipMove.getTop(); System.out.println(top + "====" + bottom + "==="+ mLocationSlip.getBottom()*2/3); if(!location&&top<(mLocationSlip.getBottom()*2/3)){ setLayout(mSlipMove, 0, 0, 0); location=true; }else if(location&&top>(mLocationSlip.getBottom()*1/3)){ setLayout(mSlipMove, 0, mLocationSlip.getBottom(), 0); location=false; }else if(!location){ setLayout(mSlipMove, 0, mLocationSlip.getBottom(), 0); }else{ setLayout(mSlipMove, 0, 0, 0); } } break; } return super.dispatchTouchEvent(event); }
主要知识点,就是重新设置了View的位置,android 3.0之后View可以同setTop(),setLeft()等一系列方法直接设置位置方便了开发。3.0之前位置变化设置方法:
/** * 给view重置位置 * @param view * @param x * @param y * @param b */ public void setLayout(View view, int x, int y, int b) { MarginLayoutParams margin = new MarginLayoutParams( view.getLayoutParams()); margin.setMargins(x, y, 0, b); RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams( margin); view.setLayoutParams(layoutParams); }
文章涉及知识点不多,相信一看就懂。如有问题,留言
下载移步:可滑动的View