タブ付きアクティビティとgoogle fit api

Question

私は3つのタブ（フラグメント）を持つアプリケーションを作成しました。最初のフラグメントでは、APIを使用しようとしましたが、何も動作しません。正常に動作します。私はここで間違って何をしていますか？私はアンドロイドスタジオでエラーが発生しています！ここ

は、私はあなたのStepcounter活動が開始されていないので、APIが呼び出されていないと思うコード形式は、フラグメント

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); 
    } 

} 

}  

であり、ここでコード形式の主な活動

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

です。

• コードをリファクタリングすることで、Tab1StepcounterがAPIの開始を担当するようにすることができます。

• APIロジックをMainActivityに移動します。

• Tab1Stepcounterフラグメント内からステップカウンタアクティビティを開始します（onCreateView()はビューを膨張させますが、アクティビティを開始しません）。