Android 仿余额宝数字跳动动画效果完整代码

一：想都不用想的，有图有真相，看着爽了，在看下面源码

二：实例源码分析

①：首先定义接口

package com.demo.tools.view; 
/** 
 * 数字动画自定义 
 * 
 * @author zengtao 2015年7月17日 上午11:48:27 
 * 
 */ 
public interface risenumberbase { 
  public void start(); 
  public risenumbertextview withnumber(float number); 
  public risenumbertextview withnumber(float number, boolean flag); 
  public risenumbertextview withnumber(int number); 
  public risenumbertextview setduration(long duration); 
  public void setonend(risenumbertextview.endlistener callback); 
} 

②：自定义控件

package com.demo.tools.view; 
import android.animation.valueanimator; 
import android.content.context; 
import android.util.attributeset; 
import android.widget.textview; 
import com.demo.tools.utils; 
/** 
 * 数字动画自定义 
 * 
 * @author zengtao 2015年7月17日 上午11:48:03 
 * 
 */ 
public class risenumbertextview extends textview implements risenumberbase { 
  private static final int stopped = 0; 
  private static final int running = 1; 
  private int mplayingstate = stopped; 
  private float number; 
  private float fromnumber; 
  private long duration = 1000; 
  /** 
   * 1.int 2.float 
   */ 
  private int numbertype = 2; 
  private boolean flags = true; 
  private endlistener mendlistener = null; 
  final static int[] sizetable = { 9, 99, 999, 9999, 99999, 999999, 9999999, 99999999, 999999999, integer.max_value }; 
  public risenumbertextview(context context) { 
    super(context); 
  } 
  public risenumbertextview(context context, attributeset attr) { 
    super(context, attr); 
  } 
  public risenumbertextview(context context, attributeset attr, int defstyle) { 
    super(context, attr, defstyle); 
  } 
  public interface endlistener { 
    public void onendfinish(); 
  } 
  public boolean isrunning() { 
    return (mplayingstate == running); 
  } 
  private void runfloat() { 
    valueanimator valueanimator = valueanimator.offloat(fromnumber, number); 
    valueanimator.setduration(duration); 
    valueanimator.addupdatelistener(new valueanimator.animatorupdatelistener() { 
      @override 
      public void onanimationupdate(valueanimator valueanimator) { 
        if (flags) { 
          settext(utils.format(",##0.00").format(double.parsedouble(valueanimator.getanimatedvalue().tostring())) + ""); 
          if (valueanimator.getanimatedvalue().tostring().equalsignorecase(number + "")) { 
            settext(utils.format(",##0.00").format(double.parsedouble(number + ""))); 
          } 
        } else { 
          settext(utils.format("##0.00").format(double.parsedouble(valueanimator.getanimatedvalue().tostring())) + ""); 
          if (valueanimator.getanimatedvalue().tostring().equalsignorecase(number + "")) { 
            settext(utils.format("##0.00").format(double.parsedouble(number + ""))); 
          } 
        } 
        if (valueanimator.getanimatedfraction() >= 1) { 
          mplayingstate = stopped; 
          if (mendlistener != null) 
            mendlistener.onendfinish(); 
        } 
      } 
    }); 
    valueanimator.start(); 
  } 
  private void runint() { 
    valueanimator valueanimator = valueanimator.ofint((int) fromnumber, (int) number); 
    valueanimator.setduration(duration); 
    valueanimator.addupdatelistener(new valueanimator.animatorupdatelistener() { 
      @override 
      public void onanimationupdate(valueanimator valueanimator) { 
        settext(valueanimator.getanimatedvalue().tostring()); 
        if (valueanimator.getanimatedfraction() >= 1) { 
          mplayingstate = stopped; 
          if (mendlistener != null) 
            mendlistener.onendfinish(); 
        } 
      } 
    }); 
    valueanimator.start(); 
  } 
  static int sizeofint(int x) { 
    for (int i = 0;; i++) 
      if (x <= sizetable[i]) 
        return i + 1; 
  } 
  @override 
  protected void onfinishinflate() { 
    super.onfinishinflate(); 
  } 
  @override 
  public void start() { 
    if (!isrunning()) { 
      mplayingstate = running; 
      if (numbertype == 1) 
        runint(); 
      else 
        runfloat(); 
    } 
  } 
  @override 
  public risenumbertextview withnumber(float number, boolean flag) { 
    this.number = number; 
    this.flags = flag; 
    numbertype = 2; 
    fromnumber = 0; 
    return this; 
  } 
  @override 
  public risenumbertextview withnumber(float number) { 
    system.out.println(number); 
    this.number = number; 
    numbertype = 2; 
    fromnumber = 0; 
    return this; 
  } 
  @override 
  public risenumbertextview withnumber(int number) { 
    this.number = number; 
    numbertype = 1; 
    fromnumber = 0; 
    return this; 
  } 
  @override 
  public risenumbertextview setduration(long duration) { 
    this.duration = duration; 
    return this; 
  } 
  @override 
  public void setonend(endlistener callback) { 
    mendlistener = callback; 
  } 
} 

③工具类的编写

package com.demo.tools; 
import java.math.roundingmode; 
import java.text.decimalformat; 
/** 
 * 配置文件 
 * @author zengtao 2015年7月17日 上午11:47:44 
 * 
 */ 
public class utils { 
  /** 
   * 格式化 
   */ 
  private static decimalformat dfs = null; 
  public static decimalformat format(string pattern) { 
    if (dfs == null) { 
      dfs = new decimalformat(); 
    } 
    dfs.setroundingmode(roundingmode.floor); 
    dfs.applypattern(pattern); 
    return dfs; 
  } 
} 

三：主界面调用

package com.demo.ui; 
import android.app.activity; 
import android.os.bundle; 
import android.view.view; 
import android.view.view.onclicklistener; 
import android.widget.button; 
import com.demo.tools.view.risenumbertextview; 
/** 
 * 数字动画 
 * 
 * @author zengtao 2015年7月17日 上午11:48:54 
 * 
 */ 
public class mainactivity extends activity { 
  private risenumbertextview number1, number2, number3, number4, number5; 
  private button start; 
  @override 
  protected void oncreate(bundle savedinstancestate) { 
    super.oncreate(savedinstancestate); 
    setcontentview(r.layout.main_activity); 
    initview(); 
  } 
  private void initview() { 
    number1 = (risenumbertextview) findviewbyid(r.id.number1); 
    number2 = (risenumbertextview) findviewbyid(r.id.number2); 
    number3 = (risenumbertextview) findviewbyid(r.id.number3); 
    number4 = (risenumbertextview) findviewbyid(r.id.number4); 
    number5 = (risenumbertextview) findviewbyid(r.id.number5); 
    start = (button) findviewbyid(r.id.start); 
    start.setonclicklistener(listener); 
  } 
  onclicklistener listener = new onclicklistener() { 
    @override 
    public void onclick(view v) { 
      if (v == start) { 
        initdata(); 
      } 
    } 
  }; 
  private void initdata() { 
    number1.withnumber(12.3f).start(); 
    number2.withnumber(16.3f).start(); 
    number3.withnumber(10.3f).start(); 
    number4.withnumber(18.3f).start(); 
    number5.withnumber(17.3f).start(); 
  } 
} 

四：总结

demo下载地址：http://xiazai.jb51.net/201711/yuanma/demo.rar

以上所述是小编给大家介绍的android 仿余额宝数字跳动动画效果完整代码，希望对大家有所帮助