公告栏目纵向滚动

ViewFlipper是这安卓自带一个主键来实现这个效果，下面是实现方式

public class UPMarqueeView extends ViewFlipper {
private Context mContext;
private boolean isSetAnimDuration = false;
private int interval = 3000;
/**
     * 动画时间
     */
    private int animDuration = 1000;

public UPMarqueeView(Context context, AttributeSet attrs) {
super(context, attrs);
        init(context, attrs, 0);
    }

private void init(Context context, AttributeSet attrs, int defStyleAttr) {
this.mContext = context;
        setFlipInterval(interval);
        Animation animIn = AnimationUtils.loadAnimation(mContext, R.anim.anim_marquee_in);
if (isSetAnimDuration) {
            animIn.setDuration(animDuration);
        }
        setInAnimation(animIn);
        Animation animOut = AnimationUtils.loadAnimation(mContext, R.anim.anim_marquee_out);
if (isSetAnimDuration) {
            animOut.setDuration(animDuration);
        }
        setOutAnimation(animOut);
    }


/**
     * 设置循环滚动的View数组
     *
     * @param views
     */
    public void setViews(final List views) {
if (views == null || views.size() == 0) return;
        removeAllViews();
for ( int i = 0; i < views.size(); i++) {
final int position=i;
//设置监听回调
            views.get(i).setOnClickListener(new OnClickListener() {
@Override
                public void onClick(View v) {
if (onItemClickListener != null) {
onItemClickListener.onItemClick(position, views.get(position));
                    }
                }
            });
            ViewGroup viewGroup = (ViewGroup) views.get(i).getParent();
if (viewGroup != null) {
                viewGroup.removeAllViews();
            }
            addView(views.get(i));
        }
        startFlipping();
    }

/**
     * 点击
     */
    private OnItemClickListener onItemClickListener;

/**
     * 设置监听接口
     * @param onItemClickListener
     */
    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
this.onItemClickListener = onItemClickListener;
    }

/**
     * item_view的接口
     */
    public interface OnItemClickListener {
void onItemClick(int position, View view);
    }
}

TextSwitcher第二安卓新出的一个也不算太新吧，但是你在网上查首先大家肯定让你用第一种，但是第一

种有个致命问题，重影问题， 好多库说跟着生命周期结束就可以，但是不行，都是你抄我的我抄你的，

你们都不试一试就拿出说呀，真是牛，第二这个完美的解决了这个问题，亲测，

第三中就是自己写，但是大家要明白，自定义是在你没有谷歌控件，或者无法满足的时候才写，有控件

可以实现为何不用，性能，刷新都可以，所以我推荐第二种，到时候我会把demo放上，把之前侧回替换，

至于代码很简单。

/**
 * 解决重影问题滚动问题
 */
private void setTextSwitcher() {
mTextSwitcher.setInAnimation(AnimationUtils.loadAnimation(getContext(), R.anim.slide_in_bottom));
mTextSwitcher.setOutAnimation(AnimationUtils.loadAnimation(getContext(), R.anim.slide_out_top));
mTextSwitcher.setFactory(new ViewSwitcher.ViewFactory() {
@Override
        public View makeView() {
//    View moreView =LayoutInflater.from(getContext()).inflate(R.layout.item_view, null);
            TextView textView = new TextView(getContext());
            textView.setSingleLine();
            textView.setTextSize(14);//字号
            textView.setTextColor(Color.parseColor("#666666"));
            textView.setEllipsize(TextUtils.TruncateAt.END);
            textView.setSingleLine();
            textView.setGravity(Gravity.CENTER_VERTICAL);
            FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
                    ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
            params.gravity = Gravity.CENTER;
            textView.setLayoutParams(params);
            textView.setPadding(5, 0, 25, 0);
            textView.setOnClickListener((v)->{

                MobclickAgent.onEvent(getContext(), "rl");
if (!isNetWorks()) {
                    ToastUtils.show("您的网络不给力,请稍后再试");
                } else {
                    Logger.d("比较俩个值："+index);
                    Logger.d("集合长度："+dataList.size());
                     {
                        Intent mIntent = new Intent(getActivity(), APPWebviewActivity.class);
                        mIntent.putExtra(APPWebviewActivity.URL, dataList.get(index).href);
                        getActivity().startActivity(mIntent);
                    }

                }


            });

return textView;
        }
    });
}

private Runnable runnable = new Runnable() {
@Override
    public void run() {
if (!isFlipping) {
return;
        }
index++;
mTextSwitcher.setText(mWarningTextList.get(index % mWarningTextList.size()));
if (index == mWarningTextList.size()) {
index = 0;
        }
        startFlipping();
    }
};

//开启信息轮播
public void startFlipping() {
if (mWarningTextList.size() > 1) {
handler.removeCallbacks(runnable);
isFlipping = true;
handler.postDelayed(runnable, 3000);
    }
}

//关闭信息轮播
public void stopFlipping() {
if (mWarningTextList.size() > 1) {
isFlipping = false;
handler.removeCallbacks(runnable);
    }
}

//设置数据
private void setData() {
if (mWarningTextList.size() == 1) {
mTextSwitcher.setText(mWarningTextList.get(0));
index = 0;
    }
if (mWarningTextList.size() > 1) {
handler.postDelayed(new Runnable() {
@Override
            public void run() {
mTextSwitcher.setText(mWarningTextList.get(0));
index = 0;
            }
        }, 1000);
mTextSwitcher.setInAnimation(AnimationUtils.loadAnimation(getContext(), R.anim.slide_in_bottom));
mTextSwitcher.setOutAnimation(AnimationUtils.loadAnimation(getContext(), R.anim.slide_out_top));

        startFlipping();
    }
}

收藏 赞

举报