android ExpandableListView的下拉刷新实现

	 

	

		该控件的修改时根据PullToRefreshList的机制修改
	

		 
	

		下面是对ExpandableListView的扩展
	

		 
	

		 
	

		package com.up91.gwy.view.componet; 
	

		 
	

		import java.lang.reflect.InvocationTargetException; 
	

		import java.lang.reflect.Method; 
	

		 
	

		import com.up91.gwy.R; 
	

		 
	

		import android.content.Context; 
	

		import android.util.AttributeSet; 
	

		import android.view.LayoutInflater; 
	

		import android.view.MotionEvent; 
	

		import android.view.View; 
	

		import android.view.ViewGroup; 
	

		import android.view.animation.LinearInterpolator; 
	

		import android.view.animation.RotateAnimation; 
	

		import android.widget.AbsListView; 
	

		import android.widget.ExpandableListView; 
	

		import android.widget.AbsListView.OnScrollListener; 
	

		import android.widget.ImageView; 
	

		import android.widget.ListAdapter; 
	

		import android.widget.ProgressBar; 
	

		import android.widget.RelativeLayout; 
	

		import android.widget.TextView; 
	

		 
	

		public class PullToRefreshExpandableListView 
	

		        extends ExpandableListView 
	

		        implements 
	

		            OnScrollListener { 
	

		     
	

		    private static final String TAG = "PullToRefreshExpandableListView"; 
	

		     
	

		    private static final int TAP_TO_REFRESH = 1; 
	

		    private static final int PULL_TO_REFRESH = 2; 
	

		    private static final int RELEASE_TO_REFRESH = 3; 
	

		    private static final int REFRESHING = 4; 
	

		     
	

		    private OnRefreshListener mOnRefreshListener; 
	

		     
	

		    private OnScrollListener mOnScrollListener; 
	

		     
	

		    private LayoutInflater  mInflater; 
	

		     
	

		    private RelativeLayout  mRefreshView; 
	

		     
	

		    private TextView mRefreshViewText; 
	

		     
	

		    private ImageView mRefreshViewImage; 
	

		     
	

		    private ProgressBar mRefreshViewProgress; 
	

		     
	

		    private TextView   mRefreshViewLastUpdated; 
	

		     
	

		    private int mCurrentScrollState; 
	

		     
	

		    private int mRefreshState; 
	

		     
	

		    private RotateAnimation mFlipAnimation; 
	

		     
	

		    private RotateAnimation mReverseFlipAnimation; 
	

		     
	

		    private int mRefreshViewHeight; 
	

		     
	

		    private int mRefreshOriginalTopPadding; 
	

		     
	

		    private int mLastMotionY; 
	

		     
	

		    private boolean isInInitState; 
	

		     
	

		    public PullToRefreshExpandableListView(Context context) { 
	

		        super(context); 
	

		        init(context); 
	

		    } 
	

		 
	

		    public PullToRefreshExpandableListView(Context context, AttributeSet attrs) { 
	

		        super(context,attrs); 
	

		        init(context); 
	

		    } 
	

		     
	

		    public PullToRefreshExpandableListView(Context context,AttributeSet attrs, int defStyle) { 
	

		        super(context,attrs,defStyle); 
	

		        init(context); 
	

		    } 
	

		     
	

		    private void init(Context context){ 
	

		        mFlipAnimation = new RotateAnimation(0,-180, 
	

		                RotateAnimation.RELATIVE_TO_SELF,0.5f, 
	

		                RotateAnimation.RELATIVE_TO_SELF,0.5f); 
	

		        mFlipAnimation.setInterpolator(new LinearInterpolator()); 
	

		        mFlipAnimation.setDuration(250); 
	

		        mFlipAnimation.setFillAfter(true); 
	

		        mReverseFlipAnimation = new RotateAnimation(-180,0, 
	

		                RotateAnimation.RELATIVE_TO_SELF,0.5f, 
	

		                RotateAnimation.RELATIVE_TO_SELF,0.5f); 
	

		        mReverseFlipAnimation.setInterpolator(new LinearInterpolator()); 
	

		        mReverseFlipAnimation.setDuration(250); 
	

		        mReverseFlipAnimation.setFillAfter(true); 
	

		         
	

		        mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
	

		         
	

		        mRefreshView = (RelativeLayout) mInflater.inflate(R.layout.pull_to_refresh_header, this,false); 
	

		     
	

		        mRefreshViewText = (TextView) mRefreshView.findViewById(R.id.pull_to_refresh_text); 
	

		         
	

		        mRefreshViewImage = (ImageView) mRefreshView.findViewById(R.id.pull_to_refresh_image); 
	

		         
	

		        mRefreshViewProgress = (ProgressBar) mRefreshView.findViewById(R.id.pull_to_refresh_progress); 
	

		     
	

		        mRefreshViewLastUpdated = (TextView) mRefreshView.findViewById(R.id.pull_to_refresh_updated_at); 
	

		     
	

		        mRefreshViewImage.setMinimumHeight(

补充：移动开发 , Android ,

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