encodeData 在低版本手機會出現OOM

[KingsleyWu]

Device Version： android 7.0
Device Model：SM-G9250
Stacktrace：java.lang.OutOfMemoryError: Failed to allocate a 197416 byte allocation with 182464 free bytes and 178KB until OOM
at libcore.util.CharsetUtils.toUtf8Bytes(Native Method)at java.lang.String.getBytes(String.java:879)
at java.lang.String.getBytes(String.java:851)
at com.sensorsdata.analytics.android.sdk.AnalyticsMessages.encodeData()
at com.sensorsdata.analytics.android.sdk.AnalyticsMessages.sendData()
at com.sensorsdata.analytics.android.sdk.AnalyticsMessages.access$000()
at com.sensorsdata.analytics.android.sdk.AnalyticsMessages$Worker$AnalyticsMessageHandler.handleMessage()
at android.os.Handler.dispatchMessage(Handler.java:102)at android.os.Looper.loop(Looper.java:154)
at android.os.HandlerThread.run(HandlerThread.java:61)

`
// AnalyticsMessages.java

private String encodeData(final String rawMessage) throws InvalidDataException {
    GZIPOutputStream gos = null;
    try {
        ByteArrayOutputStream os = new ByteArrayOutputStream(rawMessage.getBytes(CHARSET_UTF8).length);
        gos = new GZIPOutputStream(os);
        gos.write(rawMessage.getBytes(CHARSET_UTF8));
        gos.close();
        byte[] compressed = os.toByteArray();
        os.close();
        return new String(Base64Coder.encode(compressed));
    } catch (IOException exception) {
        // 格式错误，直接将数据删除
        throw new InvalidDataException(exception);
    } finally {
        if (gos != null) {
            try {
                gos.close();
            } catch (IOException e) {
                // ignore
            }
        }
    }
}

`

另外建議 rawMessage.getBytes(CHARSET_UTF8) 抽成一個變量，這個方法裡重複調用了兩次，本來不需要多申請內存的，現在申請了兩份。

[dengshiwei]

@KingsleyWu 我们内部看一下，进行优化

[dengshiwei]

@KingsleyWu v6.5.0 版本已优化