Android完美下拉刷新（上拉加载）框架 源码实例下载

package com.cy.hl.pull.pulllayout; import android.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.animation.ValueAnimator; import android.content.Context; import android.os.CountDownTimer; import android.os.Handler; import android.util.AttributeSet; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.ViewConfiguration; import android.view.ViewGroup; import android.view.animation.AccelerateDecelerateInterpolator; import android.widget.FrameLayout; import com.cy.hl.pull.R; import com.cy.hl.pull.cubic.PullFreshCubicView; import com.cy.hl.pull.cubic.PullOkImageView; import com.cy.hl.pull.listener.IPullListener; import com.cy.hl.pull.listener.IPullRefreshListener; import com.cy.hl.pull.utils.NetworkStatusUtil; /** * 一个是cubicpage，一个是rootpage， * cubicpage指的是下拉刷新的显示区域，后者是正常可视区域 * 小球在页面正下方，由于沉浸式，考虑到一定的偏移量 * Created by hailong on 2017/4/10 0010. */ public class PullLayout extends FrameLayout implements View.OnTouchListener { private Handler mHandler = new Handler(); private PullFreshCubicView freshCubicView;//阻尼弹性小球 private View progrssView;//圆形进度条 private View okView;//加载好或者加载失败，从左到右展示的一个效果 private View cubicView; private View contentView; private int offset_y;//小球的竖向偏移量 private int mTouchSlop; private float downY; protected float mOverScrollY; private float transY, transY1; private float value; private float mTotalScrollY; private float mLastMotionY; private boolean needAnimateDown; private boolean needRefresh = true; private boolean cubicOccured;//是否出现过cubic private boolean uploaded;//是否有上拉的动作 private boolean isTouch = false;//是否有触摸 public PullLayout(Context context, AttributeSet attrs) { super(context, attrs); init(); } protected void init() { final ViewConfiguration configuration = ViewConfiguration.get(getContext()); mTouchSlop = configuration.getScaledTouchSlop(); //默认inflate上cubicview cubicView = LayoutInflater.from(getContext()).inflate(R.layout.pull_cubic_layout, null); addView(cubicView, 0); //初始化cubic的相关控件 setCubicContainer(cubicView); } public void setCubicContainer(View cubicContainer) { if (cubicContainer instanceof ViewGroup) { freshCubicView = (PullFreshCubicView) cubicContainer.findViewById(R.id.beiser_view); progrssView = cubicContainer.findViewById(R.id.pull_progress); okView = cubicContainer.findViewById(R.id.pull_ok); FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) progrssView.getLayoutParams(); lp.topMargin = ((getResources().getDimensionPixelSize(R.dimen.pull_cubic_radis) * 2 - getResources().getDimensionPixelSize(R.dimen.pull_progress_size))) / 2; freshCubicView.setProgressView(progrssView); freshCubicView.setDoneIcon(okView); } } @Override public boolean dispatchTouchEvent(MotionEvent ev) { if (contentView == null) { return super.dispatchTouchEvent(ev); } if (!handleTouchEvent(ev)) { return false; } return super.dispatchTouchEvent(ev); } @Override public boolean onTouch(View v, MotionEvent ev) { if (contentView == null) { return false; } return handleTouchEvent(ev); } private boolean handleTouchEvent(MotionEvent ev) { switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: mHandler.removeCallbacks(freshRunnable); downY = ev.getY(0); mLastMotionY = downY; valueAnimator.cancel();//停在当前位置，动画结束 mTotalScrollY = -contentView.getY(); break; case MotionEvent.ACTION_POINTER_DOWN: mLastMotionY = ev.getY(0); break; case MotionEvent.ACTION_MOVE: isTouch = true; int pointerIndex = ev.findPointerIndex(0); if (pointerIndex == -1) { pointerIndex = 0; } final float y = ev.getY(pointerIndex); //如果监听到往下滑动，而且getScrollY>0,默认即可 float deltaY = mLastMotionY - y; if (noOverScroll()) { handleMovement(ev); } else if (cubicOccured && deltaY > 0 && getScrollY() == 0 && contentView.getY() <= 0) { return false; } break; case MotionEvent.ACTION_CANCEL: case MotionEvent.ACTION_UP: isTouch = false; if (noOverScroll()) { if (contentView.getY() <= 0) { resetCubicView(); needRefresh = true; cubicOccured = false; uploaded = false; } handleMoveUp(); } break; } return true; } @Override protected void onFinishInflate() { super.onFinishInflate(); if (getChildCount() > 1) { contentView = getChildAt(1); if (contentView != null) { if (contentView instanceof ViewGroup) { setOnTouchListener(this); } } } } private boolean handleMovement(MotionEvent ev) { int pointerIndex = ev.findPointerIndex(0); if (pointerIndex == -1) { pointerIndex = 0; } final float y = ev.getY(pointerIndex); //如果监听到往下滑动，而且getScrollY>0,默认即可 float deltaY = mLastMotionY - y; mLastMotionY = y; //表明手指往上 if (!cubicOccured && deltaY > 0) { return false; } if (pullListener != null) { if (pullListener.reachTop()) { overScroll(deltaY); return true; } } return false; } //touch up事件 private void handleMoveUp() { mHandler.removeCallbacks(freshRunnable); //判断是否可以开始刷新 if (freshCubicView != null && (noOverScroll() || !reachBottom()) && contentView.getY() > freshCubicView.getCubicLimit()) { mHandler.postDelayed(freshRunnable, PullFreshCubicView.Timeout); if (freshCubicView.getProgressbar() != null) { freshCubicView.getProgressbar().setAlpha(1f); } transY = contentView.getY(); transY1 = contentView.getY() - freshCubicView.getCubicLimit(); //如果正在刷新，不处理 if (transY != 0) { ValueAnimator valueAnimator1 = new ValueAnimator(); valueAnimator1.setFloatValues(0, 1); valueAnimator1.setDuration(400); valueAnimator1.addUpdateListener(updateListener1); valueAnimator1.setInterpolator(new AccelerateDecelerateInterpolator()); valueAnimator1.addListener(listener1); valueAnimator1.start(); } } else { backOver(); } mTotalScrollY = 0; } private void overScroll(float amount) { dampedOverScroll(amount); } protected void dampedOverScroll(float amount) {