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一：想都不用想的，有图有真相，看着爽了，在看下面源码
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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，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对创新互联网站的支持！