android性能2-电量、流量、FPS获取

电量

private static final String BUILD_MODEL = Build.MODEL.toLowerCase(Locale.ENGLISH);    private static final String I_MBAT = "I_MBAT: ";    private static final String CURRENT_NOW = "/sys/class/power_supply/battery/current_now";    private static final String BATT_CURRENT = "/sys/class/power_supply/battery/batt_current";    private static final String SMEM_TEXT = "/sys/class/power_supply/battery/smem_text";    private static final String BATT_CURRENT_ADC = "/sys/class/power_supply/battery/batt_current_adc";    private static final String CURRENT_AVG = "/sys/class/power_supply/battery/current_avg";        /**     * read system file to get current value     *      * @return current value     */    public Long getCurrentValue() {        File f = null;        Log.d(LOG_TAG, BUILD_MODEL);        // galaxy s4,oppo find,samgsung note2        if (BUILD_MODEL.contains("sgh-i337") || BUILD_MODEL.contains("gt-i9505") || BUILD_MODEL.contains("sch-i545")                || BUILD_MODEL.contains("find 5") || BUILD_MODEL.contains("sgh-m919") || BUILD_MODEL.contains("sgh-i537")                || BUILD_MODEL.contains("x907") || BUILD_MODEL.contains("gt-n7100")) {            f = new File(CURRENT_NOW);            if (f.exists()) {                return getCurrentValue(f, false);            }        }        // samsung galaxy        if (BUILD_MODEL.contains("gt-p31") || BUILD_MODEL.contains("gt-p51")) {            f = new File(CURRENT_AVG);            if (f.exists()) {                return getCurrentValue(f, false);            }        }        // htc desire hd ,desire z        if (BUILD_MODEL.contains("desire hd") || BUILD_MODEL.contains("desire z")) {            f = new File(BATT_CURRENT);            if (f.exists())                return getCurrentValue(f, false);        }        // htc sensation z710e        f = new File(BATT_CURRENT);        if (f.exists())            return getCurrentValue(f, false);        // htc one V        f = new File(SMEM_TEXT);        if (f.exists())            return getSMemValue();        // nexus one,meizu        f = new File(CURRENT_NOW);        if (f.exists())            return getCurrentValue(f, true);        // galaxy note, galaxy s2        f = new File(BATT_CURRENT_ADC);        if (f.exists())            return getCurrentValue(f, false);        // acer V360        f = new File("/sys/class/power_supply/battery/BatteryAverageCurrent");        if (f.exists())            return getCurrentValue(f, false);        // moto milestone,moto mb526        f = new File("/sys/devices/platform/cpcap_battery/power_supply/usb/current_now");        if (f.exists())            return getCurrentValue(f, false);        return null;    }    /**     * get current value from smem_text     *      * @return current value     */    public Long getSMemValue() {        boolean success = false;        String text = null;        Long value = null;        try {            FileReader fr = new FileReader(SMEM_TEXT);            BufferedReader br = new BufferedReader(fr);            String line = br.readLine();            while (line != null) {                if (line.contains(I_MBAT)) {                    text = line.substring(line.indexOf(I_MBAT) + 8);                    success = true;                    break;                }                line = br.readLine();            }            fr.close();            br.close();        } catch (Exception e) {            e.printStackTrace();        }        if (success) {            try {                value = Long.parseLong(text);            } catch (NumberFormatException nfe) {                nfe.printStackTrace();                value = null;            }        }        return value;    }    /**     * read system file to get current value     *      * @param file     * @param convertToMillis      * @return current value     */    public Long getCurrentValue(File file, boolean convertToMillis) {        Log.d(LOG_TAG, "*** getCurrentValue ***");        Log.d(LOG_TAG, "*** " + convertToMillis + " ***");        String line = null;        Long value = null;        FileInputStream fs = null;        DataInputStream ds = null;        try {            fs = new FileInputStream(file);            ds = new DataInputStream(fs);            line = ds.readLine();        } catch (Exception e) {            e.printStackTrace();        } finally {            try {                fs.close();                ds.close();            } catch (Exception ex) {                ex.printStackTrace();            }        }        if (line != null) {            try {                value = Long.parseLong(line);            } catch (NumberFormatException nfe) {                value = null;            }            if (convertToMillis)                value = value / 1000;        }        return value;    }}

流量

public long getTrafficInfo(String uid) {        long rcvTraffic = UNSUPPORTED;        long sndTraffic = UNSUPPORTED;        // Use getUidRxBytes and getUidTxBytes to get network traffic,these API        // return both tcp and udp usage        rcvTraffic = TrafficStats.getUidRxBytes(Integer.parseInt(uid));        sndTraffic = TrafficStats.getUidTxBytes(Integer.parseInt(uid));        if (rcvTraffic == UNSUPPORTED || sndTraffic == UNSUPPORTED) {            return UNSUPPORTED;        } else            return rcvTraffic + sndTraffic;    }

FPS

/**     * get frame per second     *      * @return frame per second     */public static float fps() {        if (true) {            long nowTime = System.nanoTime();            float f = (float) (nowTime - startTime) / 1000000.0F;            startTime = nowTime;            int nowFrameNum = getFrameNum();            final float fps = Math.round((nowFrameNum - lastFrameNum) * 1000                    / f);            lastFrameNum = nowFrameNum;            return fps;        } else {            return -1;        }    }    /**     * get frame value     *      * @return frame value     */public static final int getFrameNum() {        try {            if (process == null) {                process = Runtime.getRuntime().exec("su");                os = new DataOutputStream(process.getOutputStream());                ir = new BufferedReader(new InputStreamReader(                        process.getInputStream()));            }            os.writeBytes("service call SurfaceFlinger 1013" + "\n");            os.flush();            String str1 = ir.readLine();            if (str1 != null) {                int start = str1.indexOf("(");                int end = str1.indexOf("  ");                if ((start != -1) & (end > start)) {                    String str2 = str1.substring(start + 1, end);                    return Integer.parseInt((String) str2, 16);                }            }        } catch (IOException e) {            e.printStackTrace();        }        ok = false;        return -1;    }