Android实现数字跳动效果的TextView方法示例

allprojects {  repositories {   ...   maven { url "https://jitpack.io" }  } } 

dependencies {   compile 'com.github.JianxunRao:DancingNumberView:V1.0.1' } 

<me.trojx.dancingnumber.DancingNumberView    android:id="@+id/dnv"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    app:dnv_duration="6000"    app:dnv_format="%.2f"/> 

DancingNumberView dnv = (DancingNumberView) findViewById(R.id.dnv);  dnv.setText(text);//设置显示内容  dnv.setDuration(duration);//设置完成跳动的持续时长(单位ms)  dnv.setFormat(format);//设置数字的显示格式  dnv.dance();//启动效果,开始数字跳动 

/** * 文本中的数字开始跳动  */  public void dance() {  text = getText().toString();  numbers=new ArrayList<>();  Pattern pattern = Pattern.compile("//d+(//.//d+)?");  Matcher matcher=pattern.matcher(text);  while (matcher.find()){  numbers.add(Float.parseFloat(matcher.group()));  }  textPattern = text.replaceAll("//d+(//.//d+)?",PLACEHOLDER);  numberTemp=new float[numbers.size()];  ObjectAnimator objectAnimator=ObjectAnimator.ofFloat(this,"factor",0,1);  objectAnimator.setDuration(duration);  objectAnimator.setInterpolator(new AccelerateDecelerateInterpolator());  objectAnimator.start();  }  /**  * 获取算数因子  * @return 算数因子  */  public float getFactor() {  return factor;  }  /**  * 设置算数因子,为ObjectAnimator调用  * @see ObjectAnimator  * @param factor 算数因子  */  public void setFactor(float factor) {  String textNow=textPattern;  this.factor = factor;  for (int i=0;i<numberTemp.length;i++){  numberTemp[i]=numbers.get(i)*factor;  textNow=textNow.replaceFirst(PLACEHOLDER,String.format(format,numberTemp[i]));  }  setText(textNow);  }