package com.hupu.games.view;
import java.text.SimpleDateFormat;
import java.util.Date;
import com.hupu.games.R;
import android.content.Context;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
/**
* 下拉刷新，底部更多
*
*/
public class RefreshListView extends ListView implements OnScrollListener{
private float mDownY;
private float mMoveY;
private int mHeaderHeight;
private int mCurrentScrollState;
private final static int NONE_PULL_REFRESH = 0; //正常状态
private final static int ENTER_PULL_REFRESH = 1; //进入下拉刷新状态
private final static int OVER_PULL_REFRESH = 2; //进入松手刷新状态
private final static int EXIT_PULL_REFRESH = 3; //松手后反弹和加载状态
private int mPullRefreshState = 0; //记录刷新状态
private final static int REFRESH_BACKING = 0; //反弹中
private final static int REFRESH_BACED = 1; //达到刷新界限，反弹结束后
private final static int REFRESH_RETURN = 2; //没有达到刷新界限，返回
private final static int REFRESH_DONE = 3; //加载数据结束
private LinearLayout mHeaderLinearLayout = null;
private LinearLayout mFooterLinearLayout = null;
private TextView mHeaderTextView = null;
private TextView mHeaderUpdateText = null;
private ImageView mHeaderPullDownImageView = null;
private ImageView mHeaderReleaseDownImageView = null;
private ProgressBar mHeaderProgressBar = null;
private TextView mFooterTextView = null;
private ProgressBar mFooterProgressBar = null;
private SimpleDateFormat mSimpleDateFormat;
private Object mRefreshObject = null;
private RefreshListener mRefreshListener = null;
public void setOnRefreshListener(RefreshListener refreshListener) {
this.mRefreshListener = refreshListener;
}
public RefreshListView(Context context) {
this(context, null);
}
public RefreshListView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
void init(final Context context) {
mHeaderLinearLayout = (LinearLayout) LayoutInflater.from(context).inflate(R.layout.refresh_list_header, null);
addHeaderView(mHeaderLinearLayout);
mHeaderTextView = (TextView) findViewById(R.id.refresh_list_header_text);
mHeaderUpdateText = (TextView) findViewById(R.id.refresh_list_header_last_update);
mHeaderPullDownImageView = (ImageView) findViewById(R.id.refresh_list_header_pull_down);
mHeaderReleaseDownImageView = (ImageView) findViewById(R.id.refresh_list_header_release_up);
mHeaderProgressBar = (ProgressBar) findViewById(R.id.refresh_list_header_progressbar);
mFooterLinearLayout = (LinearLayout) LayoutInflater.from(context).inflate(R.layout.refresh_list_foot, null);
addFooterView(mFooterLinearLayout);
mFooterProgressBar = (ProgressBar) findViewById(R.id.refresh_list_footer_progressbar);
mFooterTextView = (TextView) mFooterLinearLayout.findViewById(R.id.refresh_list_footer_text);
// mFooterLinearLayout.setOnClickListener(new OnClickListener() {
// @Override
// public void onClick(View v) {
// if (context.getString(R.string.app_list_footer_more).equals(mFooterTextView.getText())) {
// mFooterTextView.setText(R.string.app_list_footer_loading);
// mFooterProgressBar.setVisibility(View.VISIBLE);
// if (mRefreshListener != null) {
// mRefreshListener.more();
// }
// }
// }
// });
setSelection(1);
setOnScrollListener(this);
measureView(mHeaderLinearLayout);
mHeaderHeight = mHeaderLinearLayout.getMeasuredHeight();
mSimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm");
mHeaderUpdateText.setText(context.getString(R.string.app_list_header_refresh_last_update, mSimpleDateFormat.format(new Date())));
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
mDownY = ev.getY();
break;
case MotionEvent.ACTION_MOVE:
mMoveY = ev.getY();
if (mPullRefreshState == OVER_PULL_REFRESH) {
mHeaderLinearLayout.setPadding(mHeaderLinearLayout.getPaddingLeft(),
(int)((mMoveY - mDownY)/3),
mHeaderLinearLayout.getPaddingRight(),
mHeaderLinearLayout.getPaddingBottom());
}
break;
case MotionEvent.ACTION_UP:
//when you action up, it will do these:
//1. roll back util header topPadding is 0
//2. hide the header by setSelection(1)
if (mPullRefreshState == OVER_PULL_REFRESH || mPullRefreshState == ENTER_PULL_REFRESH) {
new Thread() {
public void run() {
Message msg;
while(mHeaderLinearLayout.getPaddingTop() > 1) {
msg = mHandler.obtainMessage();
msg.what = REFRESH_BACKING;
mHandler.sendMessage(msg);
try {
sleep(5);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
msg = mHandler.obtainMessage();
if (mPullRefreshState == OVER_PULL_REFRESH) {
msg.what = REFRESH_BACED;
} else {
msg.what = REFRESH_RETURN;
}
mHandler.sendMessage(msg);
};
}.start();
}
break;
}
return super.onTouchEvent(ev);
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
if (mCurrentScrollState == SCROLL_STATE_TOUCH_SCROLL
&& firstVisibleItem == 0
&& (mHeaderLinearLayout.getBottom() >= 0 && mHeaderLinearLayout.getBottom() < mHeaderHeight)) {
//进入且仅进入下拉刷新状态
if (mPullRefreshState == NONE_PULL_REFRESH) {
mPullRefreshState = ENTER_PULL_REFRESH;
}
} else if (mCurrentScrollState == SCROLL_STATE_TOUCH_SCROLL
&& firstVisibleItem == 0
&& (mHeaderLinearLayout.getBottom() >= mHeaderHeight)) {
//下拉达到界限，进入松手刷新状态
if (mPullRefreshState == ENTER_PULL_REFRESH || mPullRefreshState == NONE_PULL_REFRESH) {
mPullRefreshState = OVER_PULL_REFRESH;
mDownY = mMoveY; //为下拉1/3折扣效果记录开始位置
mHeaderTextView.setText("松手刷新");//显示松手刷新
mHeaderPullDownImageView.setVisibility(View.GONE);//隐藏"下拉刷新"
mHeaderReleaseDownImageView.setVisibility(View.VISIBLE);//显示向上的箭头
}
} else if (mCurrentScrollState == SCROLL_STATE_TOUCH_SCROLL && firstVisibleItem != 0) {
//不刷新了
if (mPullRefreshState == ENTER_PULL_REFRESH) {
mPullRefreshState = NONE_PULL_REFRESH;
}
} else if (mCurrentScrollState == SCROLL_STATE_FLING && firstVisibleItem == 0) {
//飞滑状态，不能显示出header，也不能影响正常的飞滑
//只在正常情况下才纠正位置
if (mPullRefreshState == NONE_PULL_REFRESH) {
setSelection(1);
}
}
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
mCurrentScrollState = scrollState;
}
@Override
public void setAdapter(ListAdapter adapter) {
super.setAdapter(adapter);
setSelection(1);
}
private void measureView(View child) {
ViewGroup.LayoutParams p = child.getLayoutParams();
if (p == null) {
p = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_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);
}
private Handler mHandler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case REFRESH_BACKING:
mHeaderLinearLayout.setPadding(mHeaderLinearLayout.getPaddingLeft(),
(int) (mHeaderLinearLayout.getPaddingTop()*0.75f),
mHeaderLinearLayout.getPaddingRight(),
mHeaderLinearLayout.getPaddingBottom());
break;
case REFRESH_BACED:
mHeaderTextView.setText("正在加载...");
mHeaderProgressBar.setVisibility(View.VISIBLE);
mHeaderPullDownImageView.setVisibility(View.GONE);
mHeaderReleaseDownImageView.setVisibility(View.GONE);
mPullRefreshState = EXIT_PULL_REFRESH;
// new Thread() {
// public void run() {
// if (mRefreshListener != null) {
// mRefreshObject = mRefreshListener.refreshing();
// }
// Message msg = mHandler.obtainMessage();
// msg.what = REFRESH_DONE;
// mHandler.sendMessage(msg);
// };
// }.start();
if (mRefreshListener != null) {
mRefreshObject = mRefreshListener.refreshing();
}
break;
case REFRESH_RETURN:
mHeaderTextView.setText("下拉刷新");
mHeaderProgressBar.setVisibility(View.INVISIBLE);
mHeaderPullDownImageView.setVisibility(View.VISIBLE);
mHeaderReleaseDownImageView.setVisibility(View.GONE);
mHeaderLinearLayout.setPadding(mHeaderLinearLayout.getPaddingLeft(),
0,
mHeaderLinearLayout.getPaddingRight(),
mHeaderLinearLayout.getPaddingBottom());
mPullRefreshState = NONE_PULL_REFRESH;
setSelection(1);
break;
case REFRESH_DONE:
mHeaderTextView.setText("下拉刷新");
mHeaderProgressBar.setVisibility(View.INVISIBLE);
mHeaderPullDownImageView.setVisibility(View.VISIBLE);
mHeaderReleaseDownImageView.setVisibility(View.GONE);
// mHeaderUpdateText.setText(getContext().getString(R.string.app_list_header_refresh_last_update,
// mSimpleDateFormat.format(new Date())));
mHeaderLinearLayout.setPadding(mHeaderLinearLayout.getPaddingLeft(),
0,
mHeaderLinearLayout.getPaddingRight(),
mHeaderLinearLayout.getPaddingBottom());
mPullRefreshState = NONE_PULL_REFRESH;
setSelection(1);
// if (mRefreshListener != null) {
// mRefreshListener.refreshed(mRefreshObject);
// }
break;
default:
break;
}
}
};
public interface RefreshListener {
Object refreshing();
void refreshed(Object obj);
void more();
}
public void finishFootView() {
mFooterProgressBar.setVisibility(View.GONE);
mFooterTextView.setText(R.string.app_list_footer_more);
}
public void addFootView() {
if (getFooterViewsCount() == 0) {
addFooterView(mFooterLinearLayout);
}
}
public void removeFootView() {
removeFooterView(mFooterLinearLayout);
}
public void notifyFreshEnd()
{
Message msg = mHandler.obtainMessage();
msg.what = REFRESH_DONE;
mHandler.sendMessage(msg);
}
boolean moreData;
}