package com.youai.aistore.View;
import java.text.SimpleDateFormat;
import com.youai.aistore.R;
import android.annotation.SuppressLint;
import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.ScrollView;
import android.widget.Scroller;
import android.widget.TextView;
/**
* 刷新控制view
*
* @author Qzr
*
*/
@SuppressLint("InflateParams")
public class RefreshableView extends LinearLayout {
private static final String TAG = "LILITH";
private Scroller scroller;
private View refreshView;
private ImageView refreshIndicatorView;
private int refreshTargetTop = -60;
private ProgressBar bar;
private TextView downTextView;
private TextView timeTextView;
private LinearLayout timell;
private RefreshListener refreshListener;
@SuppressWarnings("unused")
private Long refreshTime = null;
@SuppressWarnings("unused")
private int lastX;
private int lastY;
// 拉动标记
private boolean isDragging = false;
// 是否可刷新标记
@SuppressWarnings("unused")
private boolean isRefreshEnabled = true;
// 在刷新中标记
@SuppressWarnings("unused")
private boolean isRefreshing = false;
private Context mContext;
public RefreshableView(Context context) {
super(context);
mContext = context;
}
public RefreshableView(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
init();
}
@SuppressWarnings("deprecation")
private void init() {
// TODO Auto-generated method stub
//滑动对象，
scroller = new Scroller(mContext);
//刷新视图顶端的的view
refreshView = LayoutInflater.from(mContext).inflate(R.layout.refresh_top_item, null);
//指示器view
refreshIndicatorView = (ImageView) refreshView.findViewById(R.id.indicator);
//刷新bar
bar = (ProgressBar) refreshView.findViewById(R.id.progress);
//下拉显示text
downTextView = (TextView) refreshView.findViewById(R.id.refresh_hint);
//下来显示时间
timeTextView = (TextView) refreshView.findViewById(R.id.refresh_time);
timell = (LinearLayout) refreshView.findViewById(R.id.refresh_time_ll);
timeTextView.setVisibility(View.VISIBLE);
timell.setVisibility(View.GONE);
LayoutParams lp = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, -refreshTargetTop);
lp.topMargin = refreshTargetTop;
lp.gravity = Gravity.CENTER;
addView(refreshView, lp);
}
/**
* 刷新
* @param time
*/
private void setRefreshText() {
// TODO Auto-generated method stub
SimpleDateFormat sDateFormat = new SimpleDateFormat(
"yyyy-MM-dd hh:mm:ss");
String date = sDateFormat.format(new java.util.Date());
timeTextView.setText(date);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
int y= (int) event.getRawY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
//记录下y坐标
lastY = y;
break;
case MotionEvent.ACTION_MOVE:
//y移动坐标
int m = y - lastY;
if(((m < 6) && (m > -1)) || (!isDragging )){
doMovement(m);
}
//记录下此刻y坐标
this.lastY = y;
break;
case MotionEvent.ACTION_UP:
fling();
break;
}
return true;
}
/**
* up事件处理
*/
private void fling() {
// TODO Auto-generated method stub
LinearLayout.LayoutParams lp = (LayoutParams) refreshView.getLayoutParams();
Log.i(TAG, "fling()" + lp.topMargin);
if(lp.topMargin > 0){//拉到了触发可刷新事件
refresh();
}else{
returnInitState();
}
}
private void returnInitState() {
// TODO Auto-generated method stub
LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams)this.refreshView.getLayoutParams();
int i = lp.topMargin;
scroller.startScroll(0, i, 0, refreshTargetTop);
invalidate();
}
private void refresh() {
// TODO Auto-generated method stub
LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams)this.refreshView.getLayoutParams();
int i = lp.topMargin;
refreshIndicatorView.setVisibility(View.GONE);
bar.setVisibility(View.VISIBLE);
// timeTextView.setVisibility(View.VISIBLE);
timell.setVisibility(View.VISIBLE);
downTextView.setVisibility(View.GONE);
scroller.startScroll(0, i, 0, 0-i);
invalidate();
if(refreshListener !=null){
refreshListener.onRefresh(this);
isRefreshing = true;
}
}
/**
*
*/
@Override
public void computeScroll() {
// TODO Auto-generated method stub
if(scroller.computeScrollOffset()){
int i = this.scroller.getCurrY();
LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams)this.refreshView.getLayoutParams();
int k = Math.max(i, refreshTargetTop);
lp.topMargin = k;
this.refreshView.setLayoutParams(lp);
this.refreshView.invalidate();
invalidate();
}
}
/**
* 下拉move事件处理
* @param moveY
*/
private void doMovement(int moveY) {
// TODO Auto-generated method stub
LinearLayout.LayoutParams lp = (LayoutParams) refreshView.getLayoutParams();
if(moveY > 0){
//获取view的上边距
float f1 =lp.topMargin;
float f2 = moveY * 0.3F;
int i = (int)(f1+f2);
//修改上边距
lp.topMargin = i;
//修改后刷新
refreshView.setLayoutParams(lp);
refreshView.invalidate();
invalidate();
}
setRefreshText();
timell.setVisibility(View.GONE);
downTextView.setVisibility(View.VISIBLE);
bar.setVisibility(View.GONE);
refreshIndicatorView.setVisibility(View.VISIBLE);
if(lp.topMargin > 0){
downTextView.setText(R.string.xlistview_header_hint_ready);
refreshIndicatorView.setImageResource(R.drawable.xlistview_up);
}else{
downTextView.setText(R.string.xlistview_header_hint_normal);
refreshIndicatorView.setImageResource(R.drawable.xlistview_arrow);
}
}
public void setRefreshEnabled(boolean b) {
this.isRefreshEnabled = b;
}
public void setRefreshListener(RefreshListener listener) {
this.refreshListener = listener;
}
/**
* 结束刷新事件
*/
public void finishRefresh(){
LinearLayout.LayoutParams lp= (LinearLayout.LayoutParams)this.refreshView.getLayoutParams();
int i = lp.topMargin;
bar.setVisibility(View.GONE);
refreshIndicatorView.setVisibility(View.VISIBLE);
timeTextView.setVisibility(View.VISIBLE);
scroller.startScroll(0, i, 0, refreshTargetTop);
invalidate();
isRefreshing = false;
}
/*该方法一般和ontouchEvent 一起用
* (non-Javadoc)
* @see android.view.ViewGroup#onInterceptTouchEvent(android.view.MotionEvent)
*/
@Override
public boolean onInterceptTouchEvent(MotionEvent e) {
// TODO Auto-generated method stub
int action = e.getAction();
int y= (int) e.getRawY();
switch (action) {
case MotionEvent.ACTION_DOWN:
lastY = y;
break;
case MotionEvent.ACTION_MOVE:
//y移动坐标
int m = y - lastY;
//记录下此刻y坐标
this.lastY = y;
if(m > 6 && canScroll()){
return true;
}
break;
case MotionEvent.ACTION_UP:
break;
case MotionEvent.ACTION_CANCEL:
break;
}
return false;
}
private boolean canScroll() {
// TODO Auto-generated method stub
View childView;
if(getChildCount()>1){
childView = this.getChildAt(1);
if(childView instanceof ListView){
int top =((ListView)childView).getChildAt(0).getTop();
int pad =((ListView)childView).getListPaddingTop();
if((Math.abs(top-pad)) < 3&&
((ListView) childView).getFirstVisiblePosition() == 0){
return true;
}else{
return false;
}
}else if(childView instanceof ScrollView){
if(((ScrollView)childView).getScrollY() == 0){
return true;
}else{
return false;
}
}
}
return false;
}
/**
* 刷新监听接口
* @author Nono
*
*/
public interface RefreshListener{
public void onRefresh(RefreshableView view);
}
}