Demo_文字翻转粗糙实现

最新推荐文章于 2023-06-01 11:52:39 发布

原创最新推荐文章于 2023-06-01 11:52:39 发布 · 275 阅读

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#文字翻转

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本文介绍了一个使用Android实现的自动文本切换与动画效果的示例，通过自定义的AutoText类实现文本的平移动画，展示了一种简单且实用的文本显示方式。

这里写图片描述

AutoText.java

package com.example.kadh.test;

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.TextSwitcher;
import android.widget.TextView;


public class AutoText extends TextSwitcher  {

    String[] mStr = new String[]{"111111111111", "222222222222222222"};
    private int mType = Animation.RELATIVE_TO_SELF;
    private TranslateAnimation mInDown;
    private TranslateAnimation mInUp;
    private TranslateAnimation mOutUp;
    private TranslateAnimation mOutDown;

    public AutoText(Context context) {
        super(context);
    }

    public AutoText(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);

    }

    private void init(Context context) {
        for (int i = 0; i < mStr.length; i++) {
            TextView tv = new TextView(context);
            tv.setBackgroundResource(R.drawable.segment_normal_2_bg);
            tv.setGravity(View.TEXT_ALIGNMENT_CENTER);
            tv.setTextSize(26);
            tv.setText(mStr[i]);
            addView(tv);
        }

        mInUp = creatAnim(mType, 0,0 , 1,  0);
        mOutUp = creatAnim(mType, 0, 0, 0, -1);
        mInDown = creatAnim(mType, 0 , 0, -1 , 0);
        mOutDown = creatAnim(mType, 0, 0, 0, 1);

        setInAnimation(mInUp);
        setOutAnimation(mOutUp);
    }


    private TranslateAnimation creatAnim(int Type, float fromXValue, float toXValue, float fromYValue, float toYValue) {
        TranslateAnimation anim = new TranslateAnimation(Type, fromXValue, Type, toXValue, Type, fromYValue, Type, toYValue);
        anim.setDuration(1000);
        anim.setFillAfter(true);
        return  anim;
    }


    public void upAnim() {
        setInAnimation(mInUp);
        setOutAnimation(mOutUp);
    }

    public void downAnim() {
        setInAnimation(mInDown);
        setOutAnimation(mOutDown);
    }

}

MainActivity

package com.example.kadh.test;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    int count = 0;
    private AutoText mAouttext;

    private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
          if  (count%2==1){
              mAouttext.showNext();
              mAouttext.downAnim();
          }else {
              mAouttext.showPrevious();
              mAouttext.upAnim();
          }
            count++;
            mHandler.sendEmptyMessageDelayed(0, 1000);
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mAouttext = (AutoText) findViewById(R.id.aouttext);
        mHandler.sendEmptyMessageDelayed(0, 1000);
    }