package com.android;
import com.high.R;
import android.annotation.SuppressLint;
import android.app.Service;
import android.content.Context;
import android.os.Vibrator;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.LinearLayout;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;
public final class HighingRefreshListView extends ListView implements
OnScrollListener {
// 下拉刷新状�?
private enum RefreshState {
Initial, // 可拉伸状�?
Refreshing// 刷新状�?
}
// 下拉刷新的接�?
public interface OnRefreshListener {
void onRefresh();
}
private Context mContext;
private OnScrollListener mOnScrollListener;// 滚动监听
private OnRefreshListener mOnRefreshListener;// 下拉刷新监听
private HeartView heartview;// 顶部水滴控件
private View headerView;// 顶部加载控件
TextView tv_refresh;
private RefreshState refreshState = RefreshState.Initial;// 初始化为可拉伸状�?
private int headerViewHeight;// 顶部高度
private int slimeViewHeight;// 水滴高度
private float oldY = 0;// Y轴原来高�?
private float LastY = 0;// Y轴原来高�?
private int LastHeight;// 顶部视图原来高度
boolean ishasrefresh = false;// 是否已经刷新过了
private boolean mIsTop = true;
private boolean mIsGoingtoRefresh = false;
private boolean isInFrefresh = false;
public HighingRefreshListView(Context context) {
super(context);
mContext = context;
this.init(context);
}
public HighingRefreshListView(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
this.init(context);
}
public HighingRefreshListView(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
mContext = context;
this.init(context);
}
/**
* 初始�? *
* @param context
*/
private void init(Context context) {
headerView = LayoutInflater.from(context).inflate(R.layout.header_view,
null);
heartview = (HeartView) headerView.findViewById(R.id.heartview);
tv_refresh = (TextView) headerView.findViewById(R.id.tv_refresh);
addHeaderView(headerView);
super.setOnScrollListener(this);
measureView(headerView);
measureView(tv_refresh);
measureView(heartview);
headerViewHeight = headerView.getMeasuredHeight();
slimeViewHeight = heartview.getMeasuredHeight();
Hidereset();
tv_refresh.setText("往下拉，有更新");
}
/**
* 绘制子试�? *
* @param child
*/
private void measureView(View child) {
ViewGroup.LayoutParams p = child.getLayoutParams();
if (p == null) {
p = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
}
int childWidthSpec = ViewGroup.getChildMeasureSpec(0, 0 + 0, p.width);
int lpHeight = p.height;
int childHeightSpec;
if (lpHeight > 0) {
childHeightSpec = MeasureSpec.makeMeasureSpec(lpHeight,
MeasureSpec.EXACTLY);
} else {
childHeightSpec = MeasureSpec.makeMeasureSpec(0,
MeasureSpec.UNSPECIFIED);
}
child.measure(childWidthSpec, childHeightSpec);
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
if (this.mOnScrollListener != null
&& refreshState != RefreshState.Refreshing) {
this.mOnScrollListener.onScrollStateChanged(view, scrollState);
}
switch (scrollState) {
// 当不滚动�?
case OnScrollListener.SCROLL_STATE_IDLE:
// 判断滚动到底�?
if (this.getLastVisiblePosition() == (this.getCount() - 1)) {
}
// 判断滚动到顶�?
if (this.getFirstVisiblePosition() == 0) {
mIsTop = true;
} else {
mIsTop = false;
}
break;
}
}
@SuppressLint("NewApi")
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:// 手指按下时，记录初始高度为headerViewHeight
Log.d("SlimeRefreshListView", "ACTION_DOWN");
oldY = event.getY();
LastY = event.getY();
Log.d("LastHeight", LastHeight + "");
LastHeight = headerViewHeight;
break;
case MotionEvent.ACTION_MOVE:// 手指移动过程中，更新头部高度和水滴形�? Log.d("SlimeRefreshListView", "ACTION_MOVE");
applyHeaderLayout(event);// 传�?事件处理
break;
case MotionEvent.ACTION_UP:// 手指抬起，headerview回复到原来的初始位置
Log.d("SlimeRefreshListView", "ACTION_UP");
if (mIsTop && mIsGoingtoRefresh) {
tv_refresh.setText("嗯~啊~要出来了。。。");
reset();
refreshState = RefreshState.Refreshing;// 更改刷新状�?
heartview.refresh();
heartview.setRotation(0);
isInFrefresh = true;
onRefresh();// 触发刷新事件
mIsGoingtoRefresh = false;
} else{
if (!isInFrefresh) {
Hidereset();
}
}
break;
default:
break;
}
return super.onTouchEvent(event);
}
private void Hidereset() {
// 复位后修复headerview的高度和padding
LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT,
headerViewHeight);
headerView.setPadding(0, 50, 0, 0);
headerView.setLayoutParams(params);
ishasrefresh = false;
// 复位后修复waterView的参�?
LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(45, 0);
heartview.setLayoutParams(params2);
}
/**
* 初始化参�? */
private void reset() {// headerview回复到原来的初始高度
// 复位后修复headerview的高度和padding
LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT,
headerViewHeight + 240);
headerView.setPadding(0, 240, 0, 0);
headerView.setLayoutParams(params);
ishasrefresh = false;
// 复位后修复waterView的参�?
LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(45,
slimeViewHeight);
heartview.setLayoutParams(params2);
}
/**
* 移动过程�?在可拉动距离之内，更新水滴的形状 ,超过拉动的距离，�?��更新
*
* @param ev
*/
@SuppressLint("NewApi")
private void applyHeaderLayout(MotionEvent ev) {
int historicalY = (int) ev.getY();
if (!isInFrefresh) {
if (historicalY != LastY) {
if (mIsTop) {
setSelection(0);
}
int h = (int) (LastHeight + historicalY - LastY);
/* 绘制水滴效果 */
LayoutParams params = new LayoutParams(
LayoutParams.MATCH_PARENT, h);
headerView.setLayoutParams(params);
if (mIsGoingtoRefresh) {
headerView.setPadding(0, h - 220, 0, 0);
} else {
headerView.setPadding(0, 140, 0, 0);
int mH = (h - 220) > 0 ? (h - 220) : 0;
LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(
45, mH);
params2.setMargins(0, 20, 0, 0);
heartview.setLayoutParams(params2);
}
LastHeight = h;
LastY = historicalY;
}
}
if (refreshState == RefreshState.Initial && mIsTop) {
if (historicalY - oldY < 220 && historicalY < 800) {// 在可拉动距离之内，更新水滴的形状
Log.d("SlimeRefreshListView", "�?��绘制");
// 未在刷新中，更改状�?
ishasrefresh = false;
mIsGoingtoRefresh = false;
} else {// 超过拉动的距离，�?��更新
if (!ishasrefresh && historicalY - oldY > 220// 触发刷新动画
&& historicalY < 800) {// 避免�?��拉到头多次触发更新事�? // 正在刷新中，更改状�?
mIsGoingtoRefresh = true;
ishasrefresh = true;
// 震动
Vibrator mVibrator01 = (Vibrator) mContext
.getSystemService(Service.VIBRATOR_SERVICE);
mVibrator01.vibrate(new long[] { 10, 10 }, -1);
// 动画
Animation rock = new RotateAnimation(0f, 180f,
Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF, 0.5f);
rock.setFillAfter(false);
rock.setDuration(150);
heartview.startAnimation(rock);
heartview.setRotation(180);
tv_refresh.setText("爱卿，快放开朕~");
}
}
}
}
@Override
public void setAdapter(ListAdapter adapter) {
super.setAdapter(adapter);
// setSelection(0);
}
@Override
public void setOnScrollListener(AbsListView.OnScrollListener l) {
this.mOnScrollListener = l;
}
public void onRefreshComplete() {
tv_refresh.setText("往下拉，有更新");
isInFrefresh = false;
heartview.stopRefresh();
refreshState = RefreshState.Initial;
Hidereset();
}
private void onRefresh() {
if (mOnRefreshListener != null) {
mOnRefreshListener.onRefresh();
}
}
public void setOnRefreshListener(OnRefreshListener onRefreshListener) {
mOnRefreshListener = onRefreshListener;
}
}
