在遵循Google Fit API教程的同时，我正在构建一个计步器应用程序，并且在成功连接到Google Fit API之后，要返回的步骤数据集始终为空。我查看了多个显示相同问题的stackoverflow页面，他们的解决方案没有帮助我，所以我再次询问是否我的代码中可能有错误。
这是我的代码：
import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import com.google.android.gms.auth.api.signin.GoogleSignIn;
import lirik.myapplication.common.logger.Log;
import lirik.myapplication.common.logger.LogView;
import lirik.myapplication.common.logger.LogWrapper;
import lirik.myapplication.common.logger.MessageOnlyLogFilter;
import com.google.android.gms.fitness.Fitness;
import com.google.android.gms.fitness.FitnessOptions;
import com.google.android.gms.fitness.data.DataSet;
import com.google.android.gms.fitness.data.DataType;
import com.google.android.gms.fitness.data.Field;
import com.google.android.gms.fitness.request.DataReadRequest;
import com.google.android.gms.fitness.result.DataReadResponse;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.OnFailureListener;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import java.util.Calendar;
import java.util.Date;
import java.util.concurrent.TimeUnit;
/**
* This sample demonstrates how to use the History API of the Google Fit platform to insert data,
* query against existing data, and remove data. It also demonstrates how to authenticate a user
* with Google Play Services and how to properly represent data in a {@link DataSet}.
*/
public class ShowActivityData extends AppCompatActivity {
public static final String TAG = "StepCounter";
private static final int REQUEST_OAUTH_REQUEST_CODE = 0x1001;
FitnessOptions fitnessOptions = FitnessOptions.builder()
.addDataType(DataType.AGGREGATE_STEP_COUNT_DELTA, FitnessOptions.ACCESS_READ)
.addDataType(DataType.TYPE_DISTANCE_DELTA, FitnessOptions.ACCESS_READ)
.addDataType(DataType.TYPE_STEP_COUNT_DELTA, FitnessOptions.ACCESS_READ)
.build();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_show_data);
// This method sets up our custom logger, which will print all log messages to the device
// screen, as well as to adb logcat.
initializeLogging();
if (!GoogleSignIn.hasPermissions(GoogleSignIn.getAccountForExtension(this, fitnessOptions), fitnessOptions)) {
GoogleSignIn.requestPermissions(
this,
REQUEST_OAUTH_REQUEST_CODE,
GoogleSignIn.getAccountForExtension(this, fitnessOptions),
fitnessOptions);
} else {
accessGoogleFit();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
if (requestCode == REQUEST_OAUTH_REQUEST_CODE) {
accessGoogleFit();
}
}
}
/** Records step data by requesting a subscription to background step data. */
private void accessGoogleFit() {
Calendar cal = Calendar.getInstance();
cal.setTime(new Date());
long endTime = cal.getTimeInMillis();
cal.add(Calendar.WEEK_OF_YEAR, -1);
long startTime = cal.getTimeInMillis();
DataReadRequest readRequest = new DataReadRequest.Builder()
.aggregate(DataType.TYPE_STEP_COUNT_DELTA, DataType.AGGREGATE_STEP_COUNT_DELTA)
// .read(DataType.TYPE_STEP_COUNT_DELTA)
.bucketByTime(8, TimeUnit.DAYS)
.enableServerQueries()
.setTimeRange(startTime, endTime, TimeUnit.MILLISECONDS)
.build();
Fitness.getHistoryClient(
this,
GoogleSignIn.getLastSignedInAccount(this))
.readData(readRequest)
.addOnSuccessListener(new OnSuccessListener<DataReadResponse>() {
@Override
public void onSuccess(DataReadResponse dataReadResponse) {
Log.d("TAG_F", "onSuccess: 1 " + dataReadResponse.toString());
Log.d("TAG_F", "onSuccess: 1 " + dataReadResponse.getStatus());
Log.d("TAG_F", "onSuccess: 1 " + dataReadResponse.getDataSet(DataType.TYPE_STEP_COUNT_DELTA));
Log.d("TAG_F", "onSuccess: 1 " + dataReadResponse.getBuckets().get(0));
Log.d("TAG_F", "onSuccess: 1 " + dataReadResponse.getBuckets().get(0).getDataSets().size());
}
})
.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(@NonNull Exception e) {
Log.d("TAG_F", "onFailure: 1 " + e.getMessage());
}
})
.addOnCompleteListener(new OnCompleteListener<DataReadResponse>() {
@Override
public void onComplete(@NonNull Task<DataReadResponse> task) {
Log.d("TAG_F", "onComplete: 1 ");
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the main; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.showactivity, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_read_data) {
accessGoogleFit();
return true;
}
return super.onOptionsItemSelected(item);
}
/** Initializes a custom log class that outputs both to in-app targets and logcat. */
private void initializeLogging() {
// Wraps Android's native log framework.
LogWrapper logWrapper = new LogWrapper();
// Using Log, front-end to the logging chain, emulates android.util.log method signatures.
Log.setLogNode(logWrapper);
// Filter strips out everything except the message text.
MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
logWrapper.setNext(msgFilter);
// On screen logging via a customized TextView.
LogView logView = (LogView) findViewById(R.id.sample_logview);
// Fixing this lint error adds logic without benefit.
// noinspection AndroidLintDeprecation
logView.setTextAppearance(R.style.Log);
logView.setBackgroundColor(Color.WHITE);
msgFilter.setNext(logView);
Log.i(TAG, "Ready");
}
}
这是输出到手机上的东西：
Ready
onSuccess: 1
com.google.android.gms.fitness.result.DataReadResponse@c68f632
onSuccess: 1 Status{statusCode = SUCCESS, resolution=null}
onsuccess: 1 DataSet{d:step_count.delta:[]}
onSuccess: 1
Bucket{startTime=1572834266699,endTime=1573439066699, activity=4, dataSets = [DataSet{d:step_count_delta:gms:aggregated[]}], bucketType=time,serverHasMoreData=false}
onSuccess: 1 1
onComplete: 1
非常感谢您的帮助！
答案 0 :(得分：0)
DataType.AGGREGATE_STEP_COUNT_DELTA和DataType.TYPE_STEP_COUNT_DELTA是两个不同的东西。
您正在请求AGGREGATE_STEP_COUNT_DELTA并阅读TYPE_STEP_COUNT_DELTA。它只会给出空结果。