XlistView: A listview which can pull to refresh and load more (3)
/** * @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;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) { 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) { //show progress mArrowImageView.clearAnimation(); mArrowImageView.setVisibility(View.INVISIBLE); mProgressBar.setVisibility(View.VISIBLE); } else { // show the arrow picture 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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