簡介

好久沒有寫博客了，最近公司產品剛發布了，終於有一點休閒的時間了，趁這個空閒的時間，今天給大家寫一個數字動畫的效果，可能在以後的時間，或許大家會用的到，值得大家收藏，直接拿過去用就好了。

一：想都不用想的，有圖有真相，看著爽了，在看下面源碼

二：實例源碼分析

package com.demo.tools.view;

/**
 * 數字動畫自定義
 * 
 * @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);
}

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;

/**
 * 數字動畫自定義
 * 
 * @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;
	}
}

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：主界面調用

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;

/**
 * 數字動畫
 * 
 * @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();
	}
}