#Mi Band Sweet and simple Android implementation to control some aspects of your Xiaomi Mi Band.

• Connect and Disconnect
• Start vibration (with pre defined and customs values)
• Change led's colors (with pre defined and customs values)
• Get battery info
• Sync with your Mi Band (steps, slept hours, etc)
• Real time step counter

##Usage Mi-Band is ultra simple to use! just follow this 1 step:

0. In your app's dependencies add the library:

    dependencies {
        compile 'com.betomaluje.miband:app:1.0.4'
    }
   

that's it! You're ready!

Note: this is thanks to the new Android Studio that uses jCenter instead of MavenCentral. To see this, you can open your main build.gradle file, and under the repositories you should see jcenter(). If not, add this as a repository

   allprojects {
       repositories {
            mavenCentral()
            maven {
                url 'https://dl.bintray.com/betomaluje/maven/'
            }
        }
    }

Now, to start testing you can use this library in activities, fragments an even services! As an alternative you can use the pre defined MiBandService

1. Define your Mi Band variable (globaly or localy, it doesn't matter because it's a Singleton) and pass it the current Context variable:

    MiBand miBand = MiBand.getInstance(MyActivity.this);
   

2. Now, to toggle connection you can use

    if (!miBand.isConnected()) {
        miBand.connect(new ActionCallback() {
            @Override
            public void onSuccess(Object data) {
                Log.d(TAG, "Connected with Mi Band!");
                //show SnackBar/Toast or something
            }
   
            @Override
            public void onFail(int errorCode, String msg) {
                Log.d(TAG, "Connection failed: " + msg);
            }
        });
    } else {
        miBand.disconnect();
    }
   

##Actions Now the fun part: sending commands to your band.

###Vibration For vibration you can use the following methods:

    //to vibrate using the default band color
    miBand.startVibration(VibrationMode.VIBRATION_WITH_LED);
    
    //to vibrate until you manually stop it
    miBand.startVibration(VibrationMode.VIBRATION_UNTIL_CALL_STOP);
    
    //to vibrate without the led
    miBand.startVibration(VibrationMode.VIBRATION_WITHOUT_LED);
    
    //to stop vibration
    miBand.stopVibration();

Also there's a custom vibration method

    miBand.customVibration(times, on_time, off_time);

where times is an int value to determine how many times will vibrate(I recommend to use between 1-3 times only) and on_time is the time in milliseconds that each vibration will be On (not more than 500 milliseconds) and off_time is the pause between each consecutive vibration

###LED Color To change the LED color, you can use

    miBand.setLedColor(color);

where color is an int value representing the color youg want

For convenience, there's a ColorPickerDialog class to help choose the int value of a color

    new ColorPickerDialog(MyActivity.this, 255, new ColorPickerDialog.OnColorSelectedListener() {
        @Override
        public void onColorSelected(int rgb) {
            Log.i(TAG, "selected color: " + rgb);
            miBand.setLedColor(rgb);
        }
    }).show();

or you can use

    miBand.setLedColor(flash_time, color, pause_time);

where flash_time is an int value to determine how many times will the led flash (I recommend using 1-3 values only) and color is the int value of the color and pause_time is the pause in milliseconds between each flash

###Battery Info To get the battery information just use

    miBand.getBatteryInfo(new ActionCallback() {
        @Override
        public void onSuccess(final Object data) {
            BatteryInfo battery = (BatteryInfo) data;
            //get the cycle count, the level and other information
            Log.e(TAG, "Battery: " + battery.toString());
        }

        @Override
        public void onFail(int errorCode, String msg) {
            Log.e(TAG, "Fail battery: " + msg);
        }
    });

###Syncronization To sync data with yor Mi Band use

    miBand.startListeningSync();

this will start the sync process. Also you can

    if (miBand.isSyncNotification())
        miBand.stopListeningSync();

After you are finished syncing with the band, you can access the information using

    Calendar before = Calendar.getInstance();
    //7 days before
    before.add(Calendar.DAY_OF_WEEK, -7);
    long temp = before.getTimeInMillis() / 1000;
    before.setTimeInMillis(temp);

    Calendar today = Calendar.getInstance();
    //now
    today.setTimeInMillis(System.currentTimeMillis() / 1000);

    //use DateUtils to display the time in the format "yyyy-MM-dd HH:mm:ss"
    Log.i(TAG, "data from " + DateUtils.convertString(before) + " to " + DateUtils.convertString(today));

    //all our data is stored in ActivitySQLite as ActivityData objects
    ArrayList<ActivityData> allActivities = ActivitySQLite.getInstance(ActivitiesChartActivity.this)
            .getActivitySamples((int) before.getTimeInMillis(), (int) today.getTimeInMillis());

to get the sleeping data use

    ActivitySQLite.getInstance(MySleepActivity.this).getSleepSamples(int timestamp_from, int timestamp_to)

and to get the activity data use

    ActivitySQLite.getInstance(MyActivitiesActivity.this).getActivitySamples(int timestamp_from, int timestamp_to)

to get ALL the data use

    ActivitySQLite.getInstance(MyAllActivity.this).getAllActivitiesSamples(int timestamp_from, int timestamp_to)

####Activities example

    Calendar before = Calendar.getInstance();
    //7 days before
    before.add(Calendar.DAY_OF_WEEK, -7);
    long temp = before.getTimeInMillis() / 1000;
    before.setTimeInMillis(temp);

    Calendar today = Calendar.getInstance();
    //now
    today.setTimeInMillis(System.currentTimeMillis() / 1000);

    //use DateUtils to display the time in the format "yyyy-MM-dd HH:mm:ss"
    Log.i(TAG, "data from " + DateUtils.convertString(before) + " to " + DateUtils.convertString(today));

    //all our data is stored in ActivitySQLite as ActivityData objects
    ArrayList<ActivityData> allActivities = ActivitySQLite.getInstance(ActivitiesChartActivity.this)
            .getActivitySamples((int) before.getTimeInMillis(), (int) today.getTimeInMillis());
            
    float movement_divisor = 180.0f;

    float value;

    String dateString = "";
    for (ActivityData ad : allActivities) {

        Calendar date = Calendar.getInstance();
        date.setTimeInMillis(ad.getTimestamp() * 1000L);

        dateString = DateUtils.convertString(date);

        Log.i(TAG, "date " + dateString);
        Log.i(TAG, "steps " + ad.getSteps());

        short movement = ad.getIntensity();

        byte steps = ad.getSteps();
        if (steps != 0) {
            // I'm not sure using steps for this is actually a good idea
            movement = steps;
        }
        
        //the value
        value = ((float) movement) / movement_divisor;
    }

####Sleeping example

    Calendar before = Calendar.getInstance();
    //7 days before
    before.add(Calendar.DAY_OF_WEEK, -7);
    long temp = before.getTimeInMillis() / 1000;
    before.setTimeInMillis(temp);

    Calendar today = Calendar.getInstance();
    //now
    today.setTimeInMillis(System.currentTimeMillis() / 1000);

    //use DateUtils to display the time in the format "yyyy-MM-dd HH:mm:ss"
    Log.i(TAG, "data from " + DateUtils.convertString(before) + " to " + DateUtils.convertString(today));

    ArrayList<ActivityData> allActivities = ActivitySQLite.getInstance(SleepChartActivity.this)
            .getSleepSamples((int) before.getTimeInMillis(), (int) today.getTimeInMillis());

    float movement_divisor = 180.0f;

    float value;

    String dateString = "";
    for (ActivityData ad : allActivities) {

        Calendar date = Calendar.getInstance();
        date.setTimeInMillis(ad.getTimestamp() * 1000L);

        dateString = DateUtils.convertString(date);

        Log.i(TAG, "date " + dateString);
        Log.i(TAG, "steps " + ad.getSteps());

        value = ((float) ad.getIntensity()) / movement_divisor;

        switch (ad.getType()) {
            case ActivityData.TYPE_DEEP_SLEEP:
                //DEEP SLEEP TYPE. Only here we need to adjust the value
                value += ActivityData.Y_VALUE_DEEP_SLEEP;
                doSomethingWithDeepSleep(value);
                break;
            case ActivityData.TYPE_LIGHT_SLEEP:
                //LIGHT SLEEP TYPE
                doSomethingWithLightSleep(value);
                break;
            default:
                //UNKNOWN TYPE
                doSomethingWithUnknownSleep(value);
                break;
        }
    }

Also you can track the "Sleep comparison"

    private void refreshSleepAmounts(List<ActivityData> samples) {
        ActivityAnalysis analysis = new ActivityAnalysis();
        ActivityAmounts amounts = analysis.calculateActivityAmounts(samples);
        
        float hoursOfSleep = amounts.getTotalSeconds() / (float) (60 * 60);
        
         Log.i(TAG, "hoursOfSleep " + hoursOfSleep + " h");
        
        for (ActivityAmount amount : amounts.getAmounts()) {
            Log.i(TAG, "name " + amount.getName());
            Log.i(TAG, "total seconds " + amount.getTotalSeconds());
            Log.i(TAG, "kind " + amount.getActivityKind());
        }
    }

##Known issues ###First time connection The first time you connect with your Mi Band please be patient. It takes around 45 seconds. After this time, if you can't connect to it, try the following

1. Try disconnecting and again connecting to Bluetooth
2. Uninstall and install again your app

###Mi Fit app incompatibility If you also have the Mi Fit app installed, you may lose some information on the syncing because Mi Fit and your app will be "fighting" to sync the Mi Band data. Once the Mi Band data is synced, it will be "deleted" from the band and lost forever.

Also the pairing process may ocurr several times each time you switch from apps because you will lose th pairing info from each app.

Nevertheless you can still send commands to the Mi Band if you are using both apps. It's not mandatory to uninstall Mi Fit to use this library.

##Acknowledge Thanks to

1. Pangliang with his library I started with mine
2. Gadgetbridge I got all the activities part and some command ideas from them

##Contribute Contributions are welcome, be it feedback, bugreports, documentation, translation, research or code. Feel free to work on any of the open issues; just leave a comment that you're working on one to avoid duplicated work.