[转]实现 Android 支付宝商家收款语音播报

by leelight · Published September 28, 2018 · Updated October 1, 2018

1. 1动机

支付宝商家收款时，语音提示：支付宝收款xxx元，当时觉得这东西还挺有趣的，第一时间通知给商家，减少不必要的纠纷，节约时间成本，对商家对用户都挺好的。
我们产品先做了<我的钱包>，现在也希望在商家版有这样收款播报的功能，我觉得挺好的。

2.

效果图

使用

gradle引入

allprojects {
        repositories {
        <span class="">...</span>
            maven { url <span class="">'https://jitpack.io'</span> }
        }
    }

    dependencies {
        implementation <span class="">'com.github.YzyCoding:PushVoiceBroadcast:1.0.2'</span>
    }

allprojects {

repositories {

...

maven { url 'https://jitpack.io' }

}

dependencies {

implementation 'com.github.YzyCoding:PushVoiceBroadcast:1.0.2'

}

一行代码

<span class="">VoicePlay</span>
<span class="">.with</span>(<span class="">MainActivity</span><span class="">.this</span>)
<span class="">.play</span>(<span class="">amount</span>);

VoicePlay

.with(MainActivity.this)

.play(amount);

3. 需求

固定播报文字，除了金额动态
收到多条推送，顺序播报
来电时，暂停播报，挂断后继续播报
正在播放音乐，暂停音乐，播放完成继续播放音乐
如果音量过小，调节音量

4. 2分析

当然是google一把，寻找新世界

系统类TextToSpeech，文字转语音，对中文支持很不给力，可以安装 “讯飞语记” TTS来满足
提前录制好”收款成功”，“0”，“1”，“2”…简小音频拼成一句话播放
讯飞SDK在线文字转语音播放？

随后呢，我又下载了支付宝APK，反编译出来看看，下图得知，支付宝的做法就是提前录制好，然后根据金额拼接成一句话，可不是，毕竟播报的是固定的那么几个字，在线文字转音频，还是TTS肯定麻烦了，所以还是选择和支付宝一样的做法。

思路

金额转大写
文字转音频
顺序播放

5. 6. 3实践

1. 关于金额的工具类

<span class="">public</span> <span class="">class MoneyUtils </span>{

    <span class="">private</span> <span class="">static</span> <span class="">final</span> <span class="">char</span>[] NUM = {<span class="">'0'</span>, <span class="">'1'</span>, <span class="">'2'</span>, <span class="">'3'</span>, <span class="">'4'</span>, <span class="">'5'</span>, <span class="">'6'</span>, <span class="">'7'</span>, <span class="">'8'</span>, <span class="">'9'</span>};
    <span class="">private</span> <span class="">static</span> <span class="">final</span> <span class="">char</span>[] CHINESE_UNIT = {<span class="">'元'</span>, <span class="">'拾'</span>, <span class="">'佰'</span>, <span class="">'仟'</span>, <span class="">'万'</span>, <span class="">'拾'</span>, <span class="">'佰'</span>, <span class="">'仟'</span>, <span class="">'亿'</span>, <span class="">'拾'</span>, <span class="">'佰'</span>, <span class="">'仟'</span>};

    <span class="">/**
     * 返回关于钱的中文式大写数字,支仅持到亿
     */</span>
    <span class="">public static String readInt(int moneyNum) </span>{
        String res = <span class="">""</span>;
        <span class="">int</span> i = <span class="">0</span>;
        <span class="">if</span> (moneyNum == <span class="">0</span>) {
            <span class="">return</span> <span class="">"0"</span>;
        }

        <span class="">if</span> (moneyNum == <span class="">10</span>) {
            <span class="">return</span> <span class="">"拾"</span>;
        }

        <span class="">if</span> (moneyNum &gt; <span class="">10</span> &amp;&amp; moneyNum &lt; <span class="">20</span>) {
            <span class="">return</span> <span class="">"拾"</span> + moneyNum % <span class="">10</span>;
        }

        <span class="">while</span> (moneyNum &gt; <span class="">0</span>) {
            res = CHINESE_UNIT[i++] + res;
            res = NUM[moneyNum % <span class="">10</span>] + res;
            moneyNum /= <span class="">10</span>;
        }

        <span class="">return</span> res.replaceAll(<span class="">"0[拾佰仟]"</span>, <span class="">"0"</span>)
                .replaceAll(<span class="">"0+亿"</span>, <span class="">"亿"</span>)
                .replaceAll(<span class="">"0+万"</span>, <span class="">"万"</span>)
                .replaceAll(<span class="">"0+元"</span>, <span class="">"元"</span>)
                .replaceAll(<span class="">"0+"</span>, <span class="">"0"</span>)
                .replace(<span class="">"元"</span>, <span class="">""</span>);
    }
}

public class MoneyUtils {

private static final char[] NUM = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};

private static final char[] CHINESE_UNIT = {'元', '拾', '佰', '仟', '万', '拾', '佰', '仟', '亿', '拾', '佰', '仟'};

/**

* 返回关于钱的中文式大写数字,支仅持到亿

*/

public static String readInt(int moneyNum) {

String res = "";

int i = 0;

if (moneyNum == 0) {

return "0";

}

if (moneyNum == 10) {

return "拾";

}

if (moneyNum > 10 && moneyNum < 20) {

return "拾" + moneyNum % 10;

}

while (moneyNum > 0) {

res = CHINESE_UNIT[i++] + res;

res = NUM[moneyNum % 10] + res;

moneyNum /= 10;

}

return res.replaceAll("0[拾佰仟]", "0")

.replaceAll("0+亿", "亿")

.replaceAll("0+万", "万")

.replaceAll("0+元", "元")

.replaceAll("0+", "0")

.replace("元", "");

}

2. 文字转本地音频

private <span class="">static</span> <span class="">List</span>&lt;<span class="">String</span>&gt; genReadableMoney(<span class="">String</span> numString) {
    <span class="">List</span>&lt;<span class="">String</span>&gt; result = <span class="">new</span> ArrayList&lt;&gt;();
    <span class="">if</span> (!TextUtils.isEmpty(numString)) {
        <span class="">if</span> (numString.contains(VoiceConstants.DOT_POINT)) {
            <span class="">String</span> integerPart = numString.split(<span class="">"\\."</span>)[<span class="">0</span>];
            <span class="">String</span> decimalPart = numString.split(<span class="">"\\."</span>)[<span class="">1</span>];
            <span class="">List</span>&lt;<span class="">String</span>&gt; intList = readIntPart(integerPart);
            <span class="">List</span>&lt;<span class="">String</span>&gt; decimalList = readDecimalPart(decimalPart);
            result.addAll(intList);
            <span class="">if</span> (!decimalList.isEmpty()) {
                result.add(VoiceConstants.DOT);
                result.addAll(decimalList);
            }
        } <span class="">else</span> {
            result.addAll(readIntPart(numString));
        }
    }
    <span class="">return</span> result;
}

private <span class="">static</span> <span class="">List</span>&lt;<span class="">String</span>&gt; readDecimalPart(<span class="">String</span> decimalPart) {
    <span class="">List</span>&lt;<span class="">String</span>&gt; result = <span class="">new</span> ArrayList&lt;&gt;();
    <span class="">if</span> (!<span class="">"00"</span>.equals(decimalPart)) {
        char[] chars = decimalPart.toCharArray();
        <span class="">for</span> (char ch : chars) {
            result.add(<span class="">String</span>.valueOf(ch));
        }
    }
    <span class="">return</span> result;
}

private <span class="">static</span> <span class="">List</span>&lt;<span class="">String</span>&gt; readIntPart(<span class="">String</span> integerPart) {
    <span class="">List</span>&lt;<span class="">String</span>&gt; result = <span class="">new</span> ArrayList&lt;&gt;();
    <span class="">String</span> intString = MoneyUtils.readInt(Integer.parseInt(integerPart));
    <span class="">int</span> len = intString.length();
    <span class="">for</span> (<span class="">int</span> i = <span class="">0</span>; i &lt; len; i++) {
        char current = intString.charAt(i);
        <span class="">if</span> (current == <span class="">'拾'</span>) {
            result.add(VoiceConstants.TEN);
        } <span class="">else</span> <span class="">if</span> (current == <span class="">'佰'</span>) {
            result.add(VoiceConstants.HUNDRED);
        } <span class="">else</span> <span class="">if</span> (current == <span class="">'仟'</span>) {
            result.add(VoiceConstants.THOUSAND);
        } <span class="">else</span> <span class="">if</span> (current == <span class="">'万'</span>) {
            result.add(VoiceConstants.TEN_THOUSAND);
        } <span class="">else</span> <span class="">if</span> (current == <span class="">'亿'</span>) {
            result.add(VoiceConstants.TEN_MILLION);
        } <span class="">else</span> {
            result.add(<span class="">String</span>.valueOf(current));
        }
    }
    <span class="">return</span> result;
}

private static List<String> genReadableMoney(String numString) {

List<String> result = new ArrayList<>();

if (!TextUtils.isEmpty(numString)) {

if (numString.contains(VoiceConstants.DOT_POINT)) {

String integerPart = numString.split("\\.")[0];

String decimalPart = numString.split("\\.")[1];

List<String> intList = readIntPart(integerPart);

List<String> decimalList = readDecimalPart(decimalPart);

result.addAll(intList);

if (!decimalList.isEmpty()) {

result.add(VoiceConstants.DOT);

result.addAll(decimalList);

}

} else {

result.addAll(readIntPart(numString));

}

return result;

}

private static List<String> readDecimalPart(String decimalPart) {

List<String> result = new ArrayList<>();

if (!"00".equals(decimalPart)) {

char[] chars = decimalPart.toCharArray();

for (char ch : chars) {

result.add(String.valueOf(ch));

}

return result;

}

private static List<String> readIntPart(String integerPart) {

List<String> result = new ArrayList<>();

String intString = MoneyUtils.readInt(Integer.parseInt(integerPart));

int len = intString.length();

for (int i = 0; i < len; i++) {

char current = intString.charAt(i);

if (current == '拾') {

result.add(VoiceConstants.TEN);

} else if (current == '佰') {

result.add(VoiceConstants.HUNDRED);

} else if (current == '仟') {

result.add(VoiceConstants.THOUSAND);

} else if (current == '万') {

result.add(VoiceConstants.TEN_THOUSAND);

} else if (current == '亿') {

result.add(VoiceConstants.TEN_MILLION);

} else {

result.add(String.valueOf(current));

}

return result;

}

3. 顺序播放

private <span class="">void</span> start(<span class="">final</span> <span class="">List</span>&lt;<span class="">String</span>&gt; voicePlay) {
    synchronized (VoicePlay.<span class="">this</span>) {
        MediaPlayer mMediaPlayer = <span class="">new</span> MediaPlayer();
        <span class="">final</span> CountDownLatch mCountDownLatch = <span class="">new</span> CountDownLatch(<span class="">1</span>);
        AssetFileDescriptor assetFileDescription = <span class="">null</span>;

        <span class="">final</span> <span class="">int</span>[] counter = {<span class="">0</span>};
        assetFileDescription = FileUtils.getAssetFileDescription(mContext,
                <span class="">String</span>.format(VoiceConstants.FILE_PATH, voicePlay.<span class="">get</span>(counter[<span class="">0</span>])));
        mMediaPlayer.setDataSource(
                assetFileDescription.getFileDescriptor(),
                assetFileDescription.getStartOffset(),
                assetFileDescription.getLength());
        mMediaPlayer.prepareAsync();
        mMediaPlayer.setOnPreparedListener(mediaPlayer -&gt; mMediaPlayer.start());
        mMediaPlayer.setOnCompletionListener(mediaPlayer -&gt; {
            mediaPlayer.reset();
            counter[<span class="">0</span>]++;

            <span class="">if</span> (counter[<span class="">0</span>] &lt; voicePlay.size()) {
                <span class="">try</span> {
                    AssetFileDescriptor fileDescription2 = FileUtils.getAssetFileDescription(mContext,
                            <span class="">String</span>.format(VoiceConstants.FILE_PATH, voicePlay.<span class="">get</span>(counter[<span class="">0</span>])));
                    mediaPlayer.setDataSource(
                            fileDescription2.getFileDescriptor(),
                            fileDescription2.getStartOffset(),
                            fileDescription2.getLength());
                    mediaPlayer.prepare();
                } <span class="">catch</span> (IOException e) {
                    e.printStackTrace();
                    mCountDownLatch.countDown();
                }
            } <span class="">else</span> {
                mediaPlayer.release();
                mCountDownLatch.countDown();
            }
        });
        mCountDownLatch.<span class="">await</span>();
        notifyAll();
    }
}

private void start(final List<String> voicePlay) {

synchronized (VoicePlay.this) {

MediaPlayer mMediaPlayer = new MediaPlayer();

final CountDownLatch mCountDownLatch = new CountDownLatch(1);

AssetFileDescriptor assetFileDescription = null;

final int[] counter = {0};

assetFileDescription = FileUtils.getAssetFileDescription(mContext,

String.format(VoiceConstants.FILE_PATH, voicePlay.get(counter[0])));

mMediaPlayer.setDataSource(

assetFileDescription.getFileDescriptor(),

assetFileDescription.getStartOffset(),

assetFileDescription.getLength());

mMediaPlayer.prepareAsync();

mMediaPlayer.setOnPreparedListener(mediaPlayer -> mMediaPlayer.start());

mMediaPlayer.setOnCompletionListener(mediaPlayer -> {

mediaPlayer.reset();

counter[0]++;

if (counter[0] < voicePlay.size()) {

try {

AssetFileDescriptor fileDescription2 = FileUtils.getAssetFileDescription(mContext,

String.format(VoiceConstants.FILE_PATH, voicePlay.get(counter[0])));

mediaPlayer.setDataSource(

fileDescription2.getFileDescriptor(),

fileDescription2.getStartOffset(),

fileDescription2.getLength());

mediaPlayer.prepare();

} catch (IOException e) {

e.printStackTrace();

mCountDownLatch.countDown();

}

} else {

mediaPlayer.release();

mCountDownLatch.countDown();

}

});

mCountDownLatch.await();

notifyAll();

}

来电未测试

7. 8. 总结

代码分为两部分

音频组合 VoiceTextTemplate
音频播放 VoicePlay

VoiceBuilder 建造者模式
同步采用 synchronized + notifyAll()

[转]实现 Android 支付宝商家收款语音播报

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[转]实现 Android 支付宝商家收款语音播报

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[转]实现 Android 支付宝商家收款语音播报

1. 1动机

2.

3. 需求

4. 2分析

5.

6. 3实践

7.

8. 总结

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