选项卡式活动和Google Fit API

Question

I created an app with 3 tabs(fragments) and in the first fragment i tried to use the api but nothing works as it suppose to, if i write the code for the api in the mainactivity it works fine. What am i doing wrong here? i am getting no errors in android studio!

here is the code form the fragment

public class Tab1Stepcounter extends Fragment {

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    View rootView = inflater.inflate(R.layout.tab1stepcounter, container, false);
    return rootView;
}

protected class Stepcounter extends AppCompatActivity implements

        OnDataPointListener,
        GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener

{
    private static final int REQUEST_OAUTH = 1;
    private static final String AUTH_PENDING = "auth_state_pending";
    private boolean authInProgress = false;
    private GoogleApiClient mApiClient;
    private ProgressBar progressBar;
    private int progressStatus=0;
    private Handler handler= new Handler();
    private TextView textView;
    private Button toastButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.tab1stepcounter);

        if (savedInstanceState != null){
            authInProgress = savedInstanceState.getBoolean(AUTH_PENDING);
        }

        mApiClient = new GoogleApiClient.Builder(this)
                .addApi(Fitness.SENSORS_API)
                .addScope(new Scope(Scopes.FITNESS_ACTIVITY_READ_WRITE))
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();
        toastButton = (Button) findViewById(R.id.show_toast);
        progressBar = (ProgressBar) findViewById(R.id.progressBar3);

    }

    @Override
    protected void onStart(){
        super.onStart();
        mApiClient.connect();
    }

    @Override
    public void onConnected(Bundle bundle) {
        DataSourcesRequest dataSourceRequest = new DataSourcesRequest.Builder()
                .setDataTypes( DataType.TYPE_STEP_COUNT_CUMULATIVE )
                .setDataSourceTypes( DataSource.TYPE_RAW )
                .build();

        ResultCallback<DataSourcesResult> dataSourcesResultCallback = new ResultCallback<DataSourcesResult>() {
            @Override
            public void onResult(DataSourcesResult dataSourcesResult) {
                for( DataSource dataSource : dataSourcesResult.getDataSources() ) {
                    if( DataType.TYPE_STEP_COUNT_CUMULATIVE.equals( dataSource.getDataType() ) ) {
                        registerFitnessDataListener(dataSource, DataType.TYPE_STEP_COUNT_CUMULATIVE);
                    }
                }
            }
        };

        Fitness.SensorsApi.findDataSources(mApiClient, dataSourceRequest)
                .setResultCallback(dataSourcesResultCallback);
    }

    private void registerFitnessDataListener(DataSource dataSource, DataType dataType) {

        SensorRequest request = new SensorRequest.Builder()
                .setDataSource( dataSource )
                .setDataType( dataType )
                .setSamplingRate( 3, TimeUnit.SECONDS )
                .build();

        Fitness.SensorsApi.add( mApiClient, request, this )
                .setResultCallback(new ResultCallback<Status>() {
                    @Override
                    public void onResult(Status status) {
                        if (status.isSuccess()) {
                            Log.e( "GoogleFit", "SensorApi successfully added" );
                        }
                    }
                });
    }

    @Override
    public void onConnectionSuspended(int i) {

    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        if(!authInProgress){
            try{
                authInProgress = true;
                connectionResult.startResolutionForResult( Stepcounter.this,REQUEST_OAUTH);
            }  catch (IntentSender.SendIntentException e){}

        }else {
            Log.e( "GoogleFit" , "authInProgress" );
        }


    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if( requestCode == REQUEST_OAUTH ) {
            authInProgress = false;
            if( resultCode == RESULT_OK ) {
                if( !mApiClient.isConnecting() && !mApiClient.isConnected() ) {
                    mApiClient.connect();
                }
            } else if( resultCode == RESULT_CANCELED ) {
                Log.e( "GoogleFit", "RESULT_CANCELED" );
            }
        } else {
            Log.e("GoogleFit", "requestCode NOT request_oauth");
        }
    }



    @Override
    public void onDataPoint(DataPoint dataPoint) {
        for( final Field field : dataPoint.getDataType().getFields() ) {
            final Value value = dataPoint.getValue( field );
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(getApplicationContext(), field.getName() + " : " + value, Toast.LENGTH_SHORT).show();
                    textView = (TextView) findViewById(R.id.textView);
                    textView.setText(field.getName()+ ": " + value);
                    textView = (TextView) findViewById(R.id.textView);
                    progressStatus = value.asInt();
                    handler.post(new Runnable() {
                        public void run() {
                            progressBar.setProgress(progressStatus);
                        }
                    });
                }
            });

            toastButton.setOnClickListener(new View.OnClickListener(){
                public void onClick(View v){
                    Toast.makeText(getApplicationContext(), field.getName() + " : " + value, Toast.LENGTH_SHORT).show();
                }
            });


        }
    }

    @Override
    protected void onStop() {
        super.onStop();

        Fitness.SensorsApi.remove( mApiClient, this )
                .setResultCallback(new ResultCallback<Status>() {
                    @Override
                    public void onResult(Status status) {
                        if (status.isSuccess()) {
                            mApiClient.disconnect();
                        }
                    }
                });
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putBoolean(AUTH_PENDING, authInProgress);
    }

}

}    

And here is the code form main activity

public class MainActivity extends AppCompatActivity {

/**
 * The {@link android.support.v4.view.PagerAdapter} that will provide
 * fragments for each of the sections. We use a
 * {@link FragmentPagerAdapter} derivative, which will keep every
 * loaded fragment in memory. If this becomes too memory intensive, it
 * may be best to switch to a
 * {@link android.support.v4.app.FragmentStatePagerAdapter}.
 */
private SectionsPagerAdapter mSectionsPagerAdapter;

/**
 * The {@link ViewPager} that will host the section contents.
 */
private ViewPager mViewPager;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    // Create the adapter that will return a fragment for each of the three
    // primary sections of the activity.
    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.container);
    mViewPager.setAdapter(mSectionsPagerAdapter);

    TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
    tabLayout.setupWithViewPager(mViewPager);

    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });

}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}



/**
 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
 * one of the sections/tabs/pages.
 */
public class SectionsPagerAdapter extends FragmentPagerAdapter {

    public SectionsPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {
       switch (position) {
           case 0:
               Tab1Stepcounter tab1 = new  Tab1Stepcounter();
               return tab1;
           case 1:
               Tab2History tab2 = new  Tab2History();
               return tab2;
           case 2:
               Tab3Sesions tab3 = new  Tab3Sesions();
               return tab3;
           default:
               return null;
       }
    }

    @Override
    public int getCount() {
        // Show 3 total pages.
        return 3;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        switch (position) {
            case 0:
                return "Step Counter";
            case 1:
                return "History";
            case 2:
                return "Sesions";
        }
        return null;
    }
}
}

Answer 1

I think your Stepcounter Activity is not started and hence the API is not invoked. You have a few options to solve this:

• Refactor the code so either your Tab1Stepcounter will be responsible for the initiation of the API.

• Move the API logic to the MainActivity.

• Start Stepcounter activity from within the Tab1Stepcounter fragment (your onCreateView() just inflates the view, it does not start the activity).