Android仿京东快报信息滚动效果

package com.test.scrolltransptoolbar;
import android.content.Context;
import android.graphics.Color;
import android.os.Handler;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.GestureDetector;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AnimationUtils;
import android.widget.TextView;
import android.widget.ViewFlipper;
import java.util.List;
/**
* Created by Administrator on 2017/8/31.
*/
public class JinDongKuaiBaoView extends ViewFlipper implements View.OnClickListener, View.OnTouchListener {
private Context context;
private List<String  mNotices;
public final static int SCROLL_TYPE_VERTICAL = 0;
public final static int SCROLL_TYPE_HORIZONTAL = 1;
private GestureDetector mGestureDetector;
public static final int FLING_MIN_DISTANCE = 80;
public static final int FLING_MIN_VELOCITY = 120;
private boolean isFling=false;
public JinDongKuaiBaoView(Context context) {
super(context);
}
Handler handler=new Handler();
public JinDongKuaiBaoView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
private void init(Context context) {
// mGestureDetector = new GestureDetector(new simpleGestureListener());
this.context = context;
// 轮播间隔时间为3s
setFlipInterval(3000);
// 内边距5dp
setPadding(dp2px(5f), dp2px(5f), dp2px(5f), dp2px(5f));
setScrollType(SCROLL_TYPE_VERTICAL);
// setOnTouchListener(this);
}
private int dp2px(float dpValue) {
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
dpValue,
context.getResources().getDisplayMetrics());
}
public void setScrollType(int type) {
clearAnimation();
switch (type) {
case SCROLL_TYPE_VERTICAL://垂直滚动动画设置
// 设置enter和leave动画
setInAnimation(AnimationUtils.loadAnimation(context, R.anim.notify_in));
setOutAnimation(AnimationUtils.loadAnimation(context, R.anim.notify_out));
break;
case SCROLL_TYPE_HORIZONTAL://水平滚动动画设置
setInAnimation(AnimationUtils.loadAnimation(context, R.anim.horizontal_notify_in));
setOutAnimation(AnimationUtils.loadAnimation(context, R.anim.horizontal_notify_out));
break;
default:
break;
}
}
/**
* 添加需要轮播展示的公告
*
* @param notices
*/
public void addNotice(List<String  notices) {
this.mNotices = notices;
removeAllViews();
for (int i = 0; i < mNotices.size(); i++) {
// 根据公告内容构建一个TextView
String notice = notices.get(i);
TextView textView = new TextView(context);
textView.setSingleLine();
textView.setText(notice);
textView.setTextSize(13f);
textView.setEllipsize(TextUtils.TruncateAt.END);
textView.setTextColor(Color.parseColor("#666666"));
textView.setGravity(Gravity.CENTER_VERTICAL);
// 将公告的位置设置为textView的tag方便点击是回调给用户
textView.setTag(i);
textView.setOnClickListener(this);
// 添加到ViewFlipper
JinDongKuaiBaoView.this.addView(textView, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
}
}
@Override
public void onClick(View v) {
int position = (int) v.getTag();
String notice = (String) mNotices.get(position);
if (mOnNoticeClickListener != null) {
mOnNoticeClickListener.onNotieClick(position, notice);
}
}
//  private void ToRightAnimation() {
//    clearAnimation();
//    setInAnimation(AnimationUtils.loadAnimation(context, R.anim.right_notify_in));
//    setOutAnimation(AnimationUtils.loadAnimation(context, R.anim.right_notify_out));
//  }
//
//  private void ToLeftAnimation() {
//    clearAnimation();
//    setInAnimation(AnimationUtils.loadAnimation(context, R.anim.horizontal_notify_in));
//    setOutAnimation(AnimationUtils.loadAnimation(context, R.anim.horizontal_notify_out));
//  }
@Override
public boolean onTouch(View v, MotionEvent event) {
mGestureDetector.onTouchEvent(event);
return true ;
}
/**
* 通知点击监听接口
*/
public interface OnNoticeClickListener {
void onNotieClick(int position, String notice);
}
private OnNoticeClickListener mOnNoticeClickListener;
/**
* 设置通知点击监听器
*
* @param onNoticeClickListener 通知点击监听器
*/
public void setOnNoticeClickListener(OnNoticeClickListener onNoticeClickListener) {
mOnNoticeClickListener = onNoticeClickListener;
}
//  private class simpleGestureListener extends GestureDetector.SimpleOnGestureListener {
//    @Override
//    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
//      isFling=true;
//      if (e1.getX() - e2.getX()   FLING_MIN_DISTANCE
//          && Math.abs(velocityX)   FLING_MIN_VELOCITY) {
//        // 当像左侧滑动的时候
//        //设置View进入屏幕时候使用的动画
//        //设置View退出屏幕时候使用的动画
//         ToLeftAnimation();
//        showNext();
//      } else if (e2.getX() - e1.getX()   FLING_MIN_DISTANCE
//          && Math.abs(velocityX)   FLING_MIN_VELOCITY) {
//        // 当像右侧滑动的时候
//        ToRightAnimation();
//        showPrevious();
//      }
//      handler.postDelayed(new Runnable() {
//        @Override
//        public void run() {
//          startFlipping();
//        }
//      },0);
//
//      return true;
//    }
//  }
}

package com.test.scrolltransptoolbar;
import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Administrator on 2017/8/31.
*/
public class ViewFlipperActivity extends Activity implements JinDongKuaiBaoView.OnNoticeClickListener {
private JinDongKuaiBaoView jinDongKuaiBaoView;
private GestureDetector gestureDetector;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_viewflipper);
jinDongKuaiBaoView = (JinDongKuaiBaoView) findViewById(R.id.jindongkuaibaoview);
List<String  notices = new ArrayList< ();
notices.add("大促销下单拆福袋，亿万新年红包随便拿");
notices.add("家电五折团，抢十亿无门槛现金红包");
notices.add("星球大战剃须刀首发送200元代金券");
jinDongKuaiBaoView.setScrollType(JinDongKuaiBaoView.SCROLL_TYPE_HORIZONTAL);
jinDongKuaiBaoView.addNotice(notices);
jinDongKuaiBaoView.startFlipping();
jinDongKuaiBaoView.setOnNoticeClickListener(this);
}
@Override
public void onNotieClick(int position, String notice) {
Toast.makeText(ViewFlipperActivity.this,"position"+position,Toast.LENGTH_LONG).show();
}
}

//设置从左开始滚动还是，水平向上开始滚动
jinDongKuaiBaoView.setScrollType(JinDongKuaiBaoView.SCROLL_TYPE_HORIZONTAL);
//开始滚动的方法
jinDongKuaiBaoView.startFlipping();
// 轮播间隔时间为3s
setFlipInterval(3000);