在 Android Wear OS 上使用 Google Fitness API 集成健身数据，可采用以下步骤：

1. 在项目的 build.gradle 中添加依赖项：

implementation 'com.google.android.gms:play-services-fitness:20.0.0'

2. 在 AndroidManifest.xml 中添加以下权限：

3. 连接 Google Play 服务并请求权限：

private static final int REQUEST_OAUTH_REQUEST_CODE = 0x1001;

public void checkAndRequestPermissions() {
    GoogleApiAvailability gaa = GoogleApiAvailability.getInstance();
    int resultCode = gaa.isGooglePlayServicesAvailable(this);
    if (resultCode == ConnectionResult.SUCCESS) {
        FitnessOptions fitnessOptions = FitnessOptions.builder()
                .addDataType(DataType.TYPE_STEP_COUNT_DELTA, FitnessOptions.ACCESS_READ)
                .addDataType(DataType.TYPE_CALORIES_EXPENDED, FitnessOptions.ACCESS_READ)
                .build();

        if (!GoogleSignIn.hasPermissions(GoogleSignIn.getLastSignedInAccount(this), fitnessOptions)) {
            GoogleSignIn.requestPermissions(
                    this, // your activity
                    REQUEST_OAUTH_REQUEST_CODE,
                    GoogleSignIn.getLastSignedInAccount(this),
                    fitnessOptions);
        } else {
            accessGoogleFit();
        }
    } else {
        Dialog dialog = gaa.getErrorDialog(this, resultCode, 0);
        dialog.show();
    }
}

4. 获取健身数据：

private void accessGoogleFit() {
    DataReadRequest readRequest = new DataReadRequest.Builder()
            .read(DataType.TYPE_STEP_COUNT_DELTA)
            .setTimeRange(1, System.currentTimeMillis(), TimeUnit.MILLISECONDS)
            .build();

    Task responseTask =
            Fitness.getHistoryClient(this, GoogleSignIn.getLastSignedInAccount(this))
                    .readData(readRequest);

    responseTask.addOnCompleteListener(new OnCompleteListener() {
        @Override
        public void onComplete(@NonNull Task task) {
            List