Android新闻公告切换效果(上下滚动&左右滚动)

- 日理万妓 2023-06-19 09:59 5阅读 0赞

今日，看到淘宝的一个效果，之前做的App中没做过，就实现了一下。使用的是原生的控件**TextSwitcher**，进行了简单的封装处理。  
![Android新闻公告切换效果][Android]

废话少说，呈上代码。

package com.panghu.view;
    
    import android.content.Context;
    import android.os.Handler;
    import android.os.Message;
    import android.util.AttributeSet;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.animation.Animation;
    import android.view.animation.AnimationUtils;
    import android.widget.ImageView;
    import android.widget.TextSwitcher;
    import android.widget.TextView;
    import android.widget.ViewSwitcher;
    
    
    import com.panghu.R;
    
    
    /** * * 公告新闻切换 * * Wetchat : ljphhj * Github : https://github.com/xiaoyaomeng * Autor : lijiangping */
    public class CustomTextSwitcher extends TextSwitcher implements ViewSwitcher.ViewFactory { 
    
        private Context mContext;
        private String[] mData;
        private final long DEFAULT_TIME_SWITCH_INTERVAL = 1000;//1s
        private long mTimeInterval = DEFAULT_TIME_SWITCH_INTERVAL;
        private int mCurrentIndex = 0;
    
        public CustomTextSwitcher(Context context, AttributeSet attrs) { 
            super(context, attrs);
            this.mContext = context;
            setFactory(this);
        }
    
        public CustomTextSwitcher setInAnimation(int animationResId){ 
            Animation animation = AnimationUtils.loadAnimation(this.mContext, animationResId);
            setInAnimation(animation);
            return this;
        }
    
        public CustomTextSwitcher setOutAnimation(int animationResId){ 
            Animation animation = AnimationUtils.loadAnimation(this.mContext, animationResId);
            setOutAnimation(animation);
            return this;
        }
    
        /** * 通知/公告数据绑定 * @param data * @return */
        public CustomTextSwitcher bindData(String[] data){ 
            this.mData = data;
            return this;
        }
    
        public void startSwitch(long timeInterval){ 
            this.mTimeInterval = timeInterval;
            if (mData != null && mData.length != 0) { 
                mSwitchHandler.sendEmptyMessage(0);
            }else{ 
                throw new RuntimeException("data is empty");
            }
        }
    
        /** * 工厂类中创建TextView供给TextSwitcher使用 * @return */
        @Override
        public View makeView() { 
            TextView view = new TextView(this.mContext);
            return view;
        }
    
        private Handler mSwitchHandler = new Handler(){ 
            @Override
            public void dispatchMessage(Message msg) { 
                super.dispatchMessage(msg);
                int index = mCurrentIndex % mData.length;
                mCurrentIndex++;
                setText(mData[index]);
                sendEmptyMessageDelayed(0, mTimeInterval);
            }
        };
    
    }

**Demo下载地址：** [https://github.com/xiaoyaomeng/CustomTextSwitcher][https_github.com_xiaoyaomeng_CustomTextSwitcher]

[Android]: https://imgconvert.csdnimg.cn/aHR0cHM6Ly91cGxvYWQtaW1hZ2VzLmppYW5zaHUuaW8vdXBsb2FkX2ltYWdlcy81MTI0NTM5LTVhNzRlZTY2NTgzZjM4MWEuZ2lm
[https_github.com_xiaoyaomeng_CustomTextSwitcher]: https://github.com/xiaoyaomeng/CustomTextSwitcher