先來看看效果吧,Android仿京東快報(bào)信息滾動(dòng)效果,具體內(nèi)容如下

(截圖效果不是很好,但是差不多出來了)
代碼:
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; // 輪播間隔時(shí)間為3s setFlipInterval(3000); // 內(nèi)邊距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://垂直滾動(dòng)動(dòng)畫設(shè)置 // 設(shè)置enter和leave動(dòng)畫 setInAnimation(AnimationUtils.loadAnimation(context, R.anim.notify_in)); setOutAnimation(AnimationUtils.loadAnimation(context, R.anim.notify_out)); break; case SCROLL_TYPE_HORIZONTAL://水平滾動(dòng)動(dòng)畫設(shè)置 setInAnimation(AnimationUtils.loadAnimation(context, R.anim.horizontal_notify_in)); setOutAnimation(AnimationUtils.loadAnimation(context, R.anim.horizontal_notify_out)); break; default: break; } } /** * 添加需要輪播展示的公告 * * @param notices */ public void addNotice(List<String> notices) { this.mNotices = notices; removeAllViews(); for (int i = 0; i < mNotices.size(); i++) { // 根據(jù)公告內(nèi)容構(gòu)建一個(gè)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); // 將公告的位置設(shè)置為textView的tag方便點(diǎn)擊是回調(diào)給用戶 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 ; } /** * 通知點(diǎn)擊監(jiān)聽接口 */ public interface OnNoticeClickListener { void onNotieClick(int position, String notice); } private OnNoticeClickListener mOnNoticeClickListener; /** * 設(shè)置通知點(diǎn)擊監(jiān)聽器 * * @param onNoticeClickListener 通知點(diǎn)擊監(jiān)聽器 */ 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) {// // 當(dāng)像左側(cè)滑動(dòng)的時(shí)候// //設(shè)置View進(jìn)入屏幕時(shí)候使用的動(dòng)畫// //設(shè)置View退出屏幕時(shí)候使用的動(dòng)畫// ToLeftAnimation();// showNext();// } else if (e2.getX() - e1.getX() > FLING_MIN_DISTANCE// && Math.abs(velocityX) > FLING_MIN_VELOCITY) {// // 當(dāng)像右側(cè)滑動(dòng)的時(shí)候// ToRightAnimation();// showPrevious();// }// handler.postDelayed(new Runnable() {// @Override// public void run() {// startFlipping();// }// },0);//// return true;// }// }}注釋掉的內(nèi)容可以不用管,那是我做其他調(diào)試用的
使用方式
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("大促銷下單拆福袋,億萬新年紅包隨便拿"); notices.add("家電五折團(tuán),搶十億無門檻現(xiàn)金紅包"); notices.add("星球大戰(zhàn)剃須刀首發(fā)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(); }}//設(shè)置從左開始滾動(dòng)還是,水平向上開始滾動(dòng)jinDongKuaiBaoView.setScrollType(JinDongKuaiBaoView.SCROLL_TYPE_HORIZONTAL);//開始滾動(dòng)的方法jinDongKuaiBaoView.startFlipping();// 輪播間隔時(shí)間為3ssetFlipInterval(3000);
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