经过大量研究，主要是因为我无法理解谷歌文档，我想出了这个例子：
public class MainActivity extends Activity implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
private static final String TAG = "FitActivity";
//[START Auth_Variable_References]
private static final int REQUEST_OAUTH = 1;
// [END auth_variable_references]
private GoogleApiClient mClient = null;
int mInitialNumberOfSteps = 0;
private TextView mStepsTextView;
private boolean mFirstCount = true;
// Create Builder View
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
mStepsTextView = (TextView) findViewById(R.id.steps);
}
private void connectFitness() {
Toast.makeText(this, "connecting", Toast.LENGTH_LONG);
Log.i(TAG, "Connecting...");
// Create the Google API Client
mClient = new GoogleApiClient.Builder(this)
// select the Fitness API
.addApi(Fitness.SENSORS_API)
.addApi(Fitness.RECORDING_API)
.addApi(Fitness.SESSIONS_API)
.addApi(Fitness.HISTORY_API)
// specify the scopes of access
.addScope(new Scope(Scopes.FITNESS_ACTIVITY_READ))
.addScope(new Scope(Scopes.FITNESS_LOCATION_READ))
.addScope(new Scope(Scopes.FITNESS_BODY_READ_WRITE))
// provide callbacks
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
// Connect the Google API client
mClient.connect();
}
// Manage OAuth authentication
@Override
public void onConnectionFailed(ConnectionResult result) {
Toast.makeText(this, "failed", Toast.LENGTH_LONG);
// Error while connecting. Try to resolve using the pending intent returned.
if (result.getErrorCode() == ConnectionResult.SIGN_IN_REQUIRED ||
result.getErrorCode() == FitnessStatusCodes.NEEDS_OAUTH_PERMISSIONS) {
try {
// Request authentication
result.startResolutionForResult(this, REQUEST_OAUTH);
} catch (IntentSender.SendIntentException e) {
Log.e(TAG, "Exception connecting to the fitness service", e);
}
} else {
Log.e(TAG, "Unknown connection issue. Code = " + result.getErrorCode());
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_OAUTH) {
if (resultCode == RESULT_OK) {
// If the user authenticated, try to connect again
mClient.connect();
}
}
}
@Override
public void onConnectionSuspended(int i) {
// If your connection gets lost at some point,
// you'll be able to determine the reason and react to it here.
Toast.makeText(this, "suspended", Toast.LENGTH_LONG);
if (i == GoogleApiClient.ConnectionCallbacks.CAUSE_NETWORK_LOST) {
Log.i(TAG, "Connection lost. Cause: Network Lost.");
} else if (i == GoogleApiClient.ConnectionCallbacks.CAUSE_SERVICE_DISCONNECTED) {
Log.i(TAG, "Connection lost. Reason: Service Disconnected");
}
}
@Override
public void onConnected(Bundle bundle) {
Log.i(TAG, "Connected!");
Toast.makeText(this, "connected", Toast.LENGTH_LONG);
// Now you can make calls to the Fitness APIs.
invokeFitnessAPIs();
}
private void invokeFitnessAPIs() {
getStepsToday();
}
private void getStepsToday() {
Calendar cal = Calendar.getInstance();
Date now = new Date();
cal.setTime(now);
long endTime = cal.getTimeInMillis();
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
long startTime = cal.getTimeInMillis();
final DataReadRequest readRequest = new DataReadRequest.Builder()
.read(DataType.TYPE_STEP_COUNT_DELTA)
.setTimeRange(startTime, endTime, TimeUnit.MILLISECONDS)
.build();
DataReadResult dataReadResult =
Fitness.HistoryApi.readData(mClient, readRequest).await(1, TimeUnit.MINUTES);
DataSet stepData = dataReadResult.getDataSet(DataType.TYPE_STEP_COUNT_DELTA);
int totalSteps = 0;
for (DataPoint dp : stepData.getDataPoints()) {
for(Field field : dp.getDataType().getFields()) {
int steps = dp.getValue(field).asInt();
totalSteps += steps;
}
}
TextView steps = (TextView)findViewById(R.id.steps);
steps.setText(totalSteps);
}
// Update the Text Viewer with Counter of Steps..
private void updateTextViewWithStepCounter(final int numberOfSteps) {
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(getBaseContext(), "On Datapoint!", Toast.LENGTH_SHORT);
if(mFirstCount && (numberOfSteps != 0)) {
mInitialNumberOfSteps = numberOfSteps;
mFirstCount = false;
}
if(mStepsTextView != null){
mStepsTextView.setText(String.valueOf(numberOfSteps - mInitialNumberOfSteps));
}
}
});
}
//Start
@Override
protected void onStart() {
super.onStart();
mFirstCount = true;
mInitialNumberOfSteps = 0;
if (mClient == null || !mClient.isConnected()) {
connectFitness();
}
}
//Stop
@Override
protected void onStop() {
super.onStop();
if(mClient.isConnected() || mClient.isConnecting()) mClient.disconnect();
mInitialNumberOfSteps = 0;
mFirstCount = true;
}
logs我注意到此代码不会调用任何Google fitmethods。有人能帮助我吗？另外我在哪里放置我的OAuth 2.0信息？我真的迷失了，甚至对Google API本身的一些解释也会有所帮助。