Android上下滚动通知自定义View

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Android自定义View实现上下滚动通知

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朋友项目需要个上下滚动通知的通知View，没有什么思路，求助于我。

简单说下我的思路：

自定义View继承至FrameLayout

内部包含要滚动的View，默认Visibility为invisible。

然后利用平移动画来移动View，在动画开始/结束的时候设置view的可视，在某一个view消失动画执行的时候开始启动下一个view的进入动画。

废话不多说，直接看代码。

要滚动View的XML：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <TextView
        android:id="@+id/tv_title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="标题"
        android:textSize="16sp" />

    <TextView
        android:id="@+id/tv_value"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:gravity="center"
        android:text="公告内容"
        android:textSize="12sp" />
</LinearLayout>  

自定义的代码：

package com.gloomyer.toticedemo;

import android.content.Context;
import android.os.Handler;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.FrameLayout;
import android.widget.TextView;

import java.util.List;

/**
 * 滚动通知栏
 */
public class NoticeVIew extends FrameLayout {
    View view1;
    View view2;
    private List<Bean> list;
    private int index = 0;

    public NoticeVIew(Context context, AttributeSet attrs) {
        super(context, attrs);
        view1 = View.inflate(context, R.layout.item, null);
        view2 = View.inflate(context, R.layout.item, null);

        view1.setVisibility(View.VISIBLE);
        view2.setVisibility(View.INVISIBLE);
        addView(view1);
        addView(view2);
    }

    public void setData(List<Bean> list) {
        this.list = list;
        index = 0;
        start1();
    }

    private static Handler mHandler = new Handler();

    private void setData(View view) {
        TextView title = (TextView) view.findViewById(R.id.tv_title);
        TextView value = (TextView) view.findViewById(R.id.tv_value);
        title.setText(list.get(index).title);
        value.setText(list.get(index).value);
        index++;
        if (index == list.size())
            index = 0;
    }

    private void start1() {
        final View view = view1;

        Animation anim = getAnim(true);
        anim.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
                view.setVisibility(View.VISIBLE);
                setData(view);
            }

            @Override
            public void onAnimationEnd(Animation animation) {
                view.clearAnimation();
                final Animation anim = getAnim(false);
                anim.setAnimationListener(new Animation.AnimationListener() {
                    @Override
                    public void onAnimationStart(Animation animation) {
                        mHandler.postDelayed(new Runnable() {
                            @Override
                            public void run() {
                                start2();
                            }
                        }, 800);
                    }

                    @Override
                    public void onAnimationEnd(Animation animation) {
                        view.clearAnimation();
                        view.setVisibility(View.INVISIBLE);
                    }

                    @Override
                    public void onAnimationRepeat(Animation animation) {

                    }
                });
                mHandler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        view.startAnimation(anim);
                    }
                }, 2000);
            }

            @Override
            public void onAnimationRepeat(Animation animation) {
            }
        });

        view.startAnimation(anim);

    }

    private void start2() {
        final View view = view2;

        Animation anim = getAnim(true);
        anim.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {
                view.setVisibility(View.VISIBLE);
                setData(view);
            }

            @Override
            public void onAnimationEnd(Animation animation) {
                view.clearAnimation();
                final Animation anim = getAnim(false);
                anim.setAnimationListener(new Animation.AnimationListener() {
                    @Override
                    public void onAnimationStart(Animation animation) {
                        mHandler.postDelayed(new Runnable() {
                            @Override
                            public void run() {
                                start1();
                            }
                        }, 500);
                    }

                    @Override
                    public void onAnimationEnd(Animation animation) {
                        view.clearAnimation();
                        view.setVisibility(View.INVISIBLE);
                    }

                    @Override
                    public void onAnimationRepeat(Animation animation) {

                    }
                });
                mHandler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        view.startAnimation(anim);
                    }
                }, 2000);
            }

            @Override
            public void onAnimationRepeat(Animation animation) {
            }
        });

        view.startAnimation(anim);

    }

    public Animation getAnim(boolean on) {
        TranslateAnimation tran = new TranslateAnimation(
                TranslateAnimation.RELATIVE_TO_SELF, 0,
                TranslateAnimation.RELATIVE_TO_SELF, 0,
                TranslateAnimation.RELATIVE_TO_SELF, on ? 1 : 0,
                TranslateAnimation.RELATIVE_TO_SELF, on ? 0 : -1
        );
        tran.setFillAfter(true);
        tran.setDuration(1500);
        return tran;
    }

}  

要滚动的数据Bean：

package com.gloomyer.toticedemo;

/**
 * Created by Gloomy on 16/6/23.
 */
public class Bean {
    public String title;
    public String value;

    public Bean(String title, String value) {
        this.title = title;
        this.value = value;
    }
}  

Activity onCreate代码：

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        notice = (NoticeVIew) findViewById(R.id.notice);

        ArrayList<Bean> list = new ArrayList<>();

        for (int i = 0; i < 10; i++) {
            list.add(new Bean("title" + i, "value:" + i));
        }

        notice.setData(list);
}