xlistview导入文件3

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//此项xlistview的头文件
package com.bwie.demo.xListView;
/**
* @file XListViewHeader.java
* @create Apr 18, 2012 5:22:27 PM
* @author Maxwin
* @description XListView's header
*/
import android.content.Context;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.RotateAnimation;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;

import com.bwie.demo.R;

public class XListViewHeader extends LinearLayout {
   private LinearLayout mContainer;
   private ImageView mArrowImageView;
   private ProgressBar mProgressBar;
   private TextView mHintTextView;
   private int mState = STATE_NORMAL;

   private Animation mRotateUpAnim;
   private Animation mRotateDownAnim;

   private final int ROTATE_ANIM_DURATION = 180;

   public final static int STATE_NORMAL = 0;
   public final static int STATE_READY = 1;
   public final static int STATE_REFRESHING = 2;

   public XListViewHeader(Context context) {
       super(context);
       initView(context);
   }

   /**
   * @param context
   * @param attrs
   */
   public XListViewHeader(Context context, AttributeSet attrs) {
       super(context, attrs);
       initView(context);
   }

   private void initView(Context context) {
       // 鍒濆鎯呭喌锛岃缃笅鎷夊埛鏂皏iew楂樺害涓?
       LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
               LayoutParams.FILL_PARENT, 0);
       mContainer = (LinearLayout) LayoutInflater.from(context).inflate(
               R.layout.xlistview_header, null);
       addView(mContainer, lp);
       setGravity(Gravity.BOTTOM);

       mArrowImageView = (ImageView)findViewById(R.id.xlistview_header_arrow);
       mHintTextView = (TextView)findViewById(R.id.xlistview_header_hint_textview);
       mProgressBar = (ProgressBar)findViewById(R.id.xlistview_header_progressbar);

       mRotateUpAnim = new RotateAnimation(0.0f, -180.0f,
               Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
               0.5f);
       mRotateUpAnim.setDuration(ROTATE_ANIM_DURATION);
       mRotateUpAnim.setFillAfter(true);
       mRotateDownAnim = new RotateAnimation(-180.0f, 0.0f,
               Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,
               0.5f);
       mRotateDownAnim.setDuration(ROTATE_ANIM_DURATION);
       mRotateDownAnim.setFillAfter(true);
   }

   public void setState(int state) {
       if (state == mState) return ;

       if (state == STATE_REFRESHING) {   // 鏄剧ず杩涘害
           mArrowImageView.clearAnimation();
           mArrowImageView.setVisibility(View.INVISIBLE);
           mProgressBar.setVisibility(View.VISIBLE);
       } else {   // 鏄剧ず绠ご鍥剧墖
           mArrowImageView.setVisibility(View.VISIBLE);
           mProgressBar.setVisibility(View.INVISIBLE);
       }

       switch(state){
       case STATE_NORMAL:
           if (mState == STATE_READY) {
               mArrowImageView.startAnimation(mRotateDownAnim);
           }
           if (mState == STATE_REFRESHING) {
               mArrowImageView.clearAnimation();
           }
           mHintTextView.setText(R.string.xlistview_header_hint_normal);
           break;
       case STATE_READY:
           if (mState != STATE_READY) {
               mArrowImageView.clearAnimation();
               mArrowImageView.startAnimation(mRotateUpAnim);
               mHintTextView.setText(R.string.xlistview_header_hint_ready);
           }
           break;
       case STATE_REFRESHING:
           mHintTextView.setText(R.string.xlistview_header_hint_loading);
           break;
           default:
       }

       mState = state;
   }

   public void setVisiableHeight(int height) {
       if (height < 0)
           height = 0;
       LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) mContainer
               .getLayoutParams();
       lp.height = height;
       mContainer.setLayoutParams(lp);
   }

   public int getVisiableHeight() {
       return mContainer.getHeight();
   }

}

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