公司要求做左右自动轮播的广告图控件，具体实现如下：
package com.zufang.view.ScrollView;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.os.Message;
import android.util.AttributeSet;
import android.widget.HorizontalScrollView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import com.anst.library.LibUtils.MHandler;
import com.anst.library.LibUtils.common.LibDensityUtils;
import com.anst.library.LibUtils.imageload.LibImage;
/**
* Copyright (C), 2018-2018, 912租房网
* Author:
* Date: 2018/8/21 0021 下午 3:01
* Description: 水平自动滚动ScrollView
*/
public class AutoScrollView extends HorizontalScrollView {
private LinearLayout mContentLl;
private static final int MESSAGE_SCROLL = 10010;
private static int offset = 30; //滚动的时间间隔
private int mPageSize, mItemWidth, mMaxScrollWidth;
private int scollWidth = 1; //每次只移动的像素点
private CountHandler mHander;
private List<String> mDataList;
private boolean mRefresh = false;
private boolean mIsScrollStart = false;
private static class CountHandler extends MHandler<AutoScrollView> {
public CountHandler(AutoScrollView target) {
super(target);
}
@Override
public void handle(final AutoScrollView target, Message msg) {
switch (msg.what) {
case MESSAGE_SCROLL:
target.mIsScrollStart = true;
int scrollX = target.getScrollX();
int delay = 0;
if (scrollX >= target.mMaxScrollWidth) {
target.scrollTo(0, 0);
} else {
target.smoothScrollBy(target.scollWidth, 0);
delay = offset;
}
postDelayed(new Runnable() {
@Override
public void run() {
sendEmptyMessage(MESSAGE_SCROLL);
}
}, delay);
break;
}
}
}
public AutoScrollView(Context context) {
this(context, null);
}
public AutoScrollView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public AutoScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
private void init() {
mDataList = new ArrayList<>();
mHander = new CountHandler(this);
mContentLl = new LinearLayout(getContext());
mContentLl.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
int margin = LibDensityUtils.dp2px(3);
mContentLl.setLayoutParams(params);
setPadding(margin, 0, margin, 0);
addView(mContentLl);
}
public void setImageData(final List<String> data) {
final int pageSize = mDataList.size();
mDataList = data;
mContentLl.removeAllViews();
mHander.removeMessages(MESSAGE_SCROLL);
postDelayed(new Runnable() {
@Override
public void run() {
int containerWidth = LibDensityUtils.getScreenWidth();
AutoScrollView.this.mPageSize = pageSize;
AutoScrollView.this.mItemWidth = containerWidth / 3;
AutoScrollView.this.mMaxScrollWidth = mDataList.size() * mItemWidth;
mDataList.addAll(mDataList);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(mItemWidth, LinearLayout.LayoutParams.WRAP_CONTENT);
for (int i = 0; i < mDataList.size(); i++) {
ImageView imageView = new ImageView(getContext());
String url = mDataList.get(i);
imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
LibImage.getInstance().load(getContext(), imageView, url);
mContentLl.addView(imageView, params);
}
mRefresh = true;
}
}, 100);
start();
}
public boolean isStarted() {
return mIsScrollStart;
}
private void start() {
mHander.postDelayed(new Runnable() {
@Override
public void run() {
if (mRefresh) { // 防止多次刷新速度重叠加快
mHander.removeMessages(MESSAGE_SCROLL);
mRefresh = false;
}
mHander.sendEmptyMessage(MESSAGE_SCROLL);
}
}, offset);
}
}
在页面中使用：
package com.zufang.view.homepage.rollad;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.content.Intent;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.view.View;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.anst.library.LibUtils.common.LibListUtils;
import com.anst.library.LibUtils.http.IHttpCallBack;
import com.anst.library.LibUtils.http.LibHttp;
import com.zufang.entity.response.HomeOccupyResponse;
import com.zufang.entity.response.PartnerItem;
import com.zufang.ui.R;
import com.anst.library.LibUtils.url.UrlConstant;
import com.zufang.ui.xuanzhi.XuanZhiFilterActivity;
import com.zufang.view.ScrollView.AutoScrollView;
/**
* Copyright (C), 2018-2018, 912租房网
* Author:
* Date: 2018/5/29 0029 下午 2:59
* Description: 首页轮播广告
*/
public class RollAdView extends RelativeLayout {
private TextView mPartenerTv;
private AutoScrollView mAdScrollView; //合作品牌轮播图
public RollAdView(Context context) {
super(context);
init();
}
public RollAdView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public RollAdView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
private void init() {
View view = inflate(getContext(), R.layout.view_roll_ad, this);
mPartenerTv = (TextView) view.findViewById(R.id.tv_partnert_title);
mAdScrollView = (AutoScrollView) view.findViewById(R.id.auto_scroll_view);
}
public void getData() {
getAdData(); // 请求接口
}
//获取广告、轮播图
private void getAdData() {
LibHttp.getInstance().get(getContext(), UrlConstant.getInstance().HOMEPAGE_SPECIAL_PAGE, null, new IHttpCallBack<HomeOccupyResponse>() {
@Override
public void onSuccess(HomeOccupyResponse o) {
if (o == null) {
return;
}
mPartenerTv.setText(o.partnerTitle);
mPartenerTv.setVisibility(TextUtils.isEmpty(o.partnerTitle) ? GONE : VISIBLE);
if (!LibListUtils.isListNullorEmpty(o.partnerList)) {
List<String> adList = new ArrayList<>();
for (PartnerItem item : o.partnerList) {
if (item == null) {
continue;
}
adList.add(item.imgUrl);
}
//为轮播控件赋值
mAdScrollView.setImageData(adList);
}
}
@Override
public void onFailed(String error) {
}
});
}
}
