1.文字进入的动画

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="1000"
        android:fromYDelta="100%"
        android:toYDelta="0" />
    <alpha
        android:duration="1000"
        android:fromAlpha="0.0"
        android:toAlpha="1.0" />
</set>

2.文字退出的动画

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="1000"
        android:fromYDelta="0"
        android:toYDelta="-100%" />
    <alpha
        android:duration="1000"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" />
</set>

3.自定义view

public class NoticeView extends ViewFlipper {

    private Context mContext;
    private int fontSize;
    private int textColor;

    public NoticeView(Context context) {
        super(context);
        mContext = context;
        initView();
    }

    public NoticeView(Context context, AttributeSet attrs) {
        super(context, attrs);
        mContext = context;
        TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.NoticeView);
        //获取字体大小,默认大小是12sp
        fontSize = (int) ta.getDimension(R.styleable.NoticeView_text_font, 12);
        Log.i("fontSize","fontSize:"+fontSize);
        //获取文字颜色，默认颜色是BLUE
        textColor = ta.getColor(R.styleable.NoticeView_text_color, Color.GRAY);
        ta.recycle();
        initView();
    }

    private void initView() {
        setInAnimation(AnimationUtils.loadAnimation(mContext, R.anim.notice_slide_in_bottom));
        setOutAnimation(AnimationUtils.loadAnimation(mContext, R.anim.notice_slide_out_top));
    }
    public void showNoticeMessages(List<String> messages, NoticeClickListener listener) {
        if (messages == null || messages.size() == 0) {
            return;
        }

        removeAllViews();
        startFlipping();
        setAutoStart(true);
        for (int i = 0;i <messages.size();i++) {
            TextView textView = new TextView(mContext);
            textView.setTextSize(fontSize);
            textView.setGravity(Gravity.CENTER_VERTICAL);
            textView.setText(messages.get(i));
            textView.setTag(i);
            textView.setTextColor(textColor);
            textView.setOnClickListener(listener);
            LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
            lp.gravity = Gravity.CENTER_VERTICAL;
            addView(textView,lp);
        }
    }
    public void showNoNotice(String message){
        if (message == null){
            return;
        }
        removeAllViews();
        stopFlipping();
        setAutoStart(false);
        TextView textView = new TextView(mContext);
        textView.setTextSize(fontSize);
        textView.setText(message);
        textView.setTextColor(textColor);
        textView.setGravity(Gravity.CENTER_VERTICAL);
        LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
        lp.gravity = Gravity.CENTER_VERTICAL;
        addView(textView,lp);
    }
    public interface NoticeClickListener extends View.OnClickListener {
        void onClick(View view);
    }

    public void release(){
        removeAllViews();
        stopFlipping();
    }
}