Android的行为识别不工作的Nexus 5 [英] Android Activity Recognition not working with Nexus 5
问题描述
我有使用谷歌的行为识别更新一个code工作。现在，突然之间，这些看起来虽然要求每20秒发送更新或者每秒数次，时不再来。我并没有改变的code和检查早期版本，但得到了同样的问题。
I had a code working that was using Google's Activity Recognition Updates. Now all of a sudden these seem to send updates either several times per second or never although requested every 20 seconds. I haven't changed the code and checked earlier versions but got the same problem.
我建的教程一个最小的例子，但也让我的Nexus 5的设备没有活动的更新。随着我的HTC Desire（MildWild 5.0基于Android 2.3.7），它完美的罚款。我怀疑谷歌播放服务，但是这两款手机都有4.2.43版本的安装
I built a minimal example from the tutorial but also get no activity updates with my Nexus 5 device. With my HTC Desire (MildWild 5.0 based on Android 2.3.7) it works perfectly fine. I suspected Google Play Services but both phones have version 4.2.43 installed
MainActivity：
MainActivity:
package com.example.testactivities;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.Menu;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesClient.ConnectionCallbacks;
import com.google.android.gms.common.GooglePlayServicesClient.OnConnectionFailedListener;
import com.google.android.gms.location.ActivityRecognitionClient;
public class MainActivity extends FragmentActivity implements
ConnectionCallbacks, OnConnectionFailedListener {
// Constants that define the activity detection interval
public static final int MILLISECONDS_PER_SECOND = 1000;
public static final int DETECTION_INTERVAL_SECONDS = 1;
public static final int DETECTION_INTERVAL_MILLISECONDS =
MILLISECONDS_PER_SECOND * DETECTION_INTERVAL_SECONDS;
/*
* Store the PendingIntent used to send activity recognition events
* back to the app
*/
private PendingIntent mActivityRecognitionPendingIntent;
// Store the current activity recognition client
private ActivityRecognitionClient mActivityRecognitionClient;
// Flag that indicates if a request is underway.
private boolean mInProgress;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*
* Instantiate a new activity recognition client. Since the
* parent Activity implements the connection listener and
* connection failure listener, the constructor uses "this"
* to specify the values of those parameters.
*/
mActivityRecognitionClient =
new ActivityRecognitionClient(this, this, this);
/*
* Create the PendingIntent that Location Services uses
* to send activity recognition updates back to this app.
*/
Intent intent = new Intent(
this.getApplicationContext(), ActivityRecognitionIntentService.class);
/*
* Return a PendingIntent that starts the IntentService.
*/
mActivityRecognitionPendingIntent =
PendingIntent.getService(this, 0, intent,
PendingIntent.FLAG_UPDATE_CURRENT);
// Start with the request flag set to false
mInProgress = false;
this.startUpdates();
}
/**
* Request activity recognition updates based on the current
* detection interval.
*
*/
public void startUpdates() {
// If a request is not already underway
if (!mInProgress) {
// Indicate that a request is in progress
mInProgress = true;
// Request a connection to Location Services
mActivityRecognitionClient.connect();
//
} else {
/*
* A request is already underway. You can handle
* this situation by disconnecting the client,
* re-setting the flag, and then re-trying the
* request.
*/
}
}
/*
* Called by Location Services once the location client is connected.
*
* Continue by requesting activity updates.
*/
@Override
public void onConnected(Bundle dataBundle) {
Log.v("EXAMPLE","connected");
/*
* Request activity recognition updates using the preset
* detection interval and PendingIntent. This call is
* synchronous.
*/
mActivityRecognitionClient.requestActivityUpdates(
DETECTION_INTERVAL_MILLISECONDS,
mActivityRecognitionPendingIntent);
/*
* Since the preceding call is synchronous, turn off the
* in progress flag and disconnect the client
*/
mInProgress = false;
mActivityRecognitionClient.disconnect();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public void onConnectionFailed(ConnectionResult arg0) {
Log.v("EXAMPLE","Connection failed");
}
@Override
public void onDisconnected() {
Log.v("EXAMPLE","Disconnected");
}
}
清单：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.testactivities"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="19" />
<uses-permission android:name="com.google.android.gms.permission.ACTIVITY_RECOGNITION"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<activity
android:name="com.example.testactivities.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name="com.example.testactivities.ActivityRecognitionIntentService"/>
</application>
</manifest>
RecognitionIntentService：
RecognitionIntentService:
package com.example.testactivities;
import android.app.IntentService;
import android.content.Intent;
import android.util.Log;
public class ActivityRecognitionIntentService extends IntentService {
public ActivityRecognitionIntentService() {
super("ActivityRecognitionIntent");
Log.v("EXAMPLE","constructor");
}
@Override
protected void onHandleIntent(Intent intent) {
Log.v("EXAMPLE","new activity update");
}
}
更新：我相信canopi确定正确的问题。当设备仍具有较高的信心，它不火的认可意图可言。这是绝对不同的一年前（在其他设备上）。为了检测该设备是否仍在我日志最后进入的活性，其时间戳和定期检查的。该设备已经仍然在该时间的老时间戳信号
UPDATE: I believe canopi identified the correct problem. When the device is still with high confidence, it doesn't fire recognition intents at all. This was definitely different a year ago (on other devices). To detect if the device is still I log the last incoming activity with its timestamp and check periodically for that. An old timestamp signals that the device has been still for that time.
推荐答案
我会建议你提高了检测的时间间隔，至少需要6到7秒的传感器来检测你的活动的变化。另外，我还发现，ActivityRecognition停止射击的意图，如果该设备仍是在一定的时间段。它们被立即触发时，该设备处于运动再次
I would suggest you increase the detection interval, it takes at least 6 to 7 seconds for the sensors to detect a change in your activity. Also, I have observed that ActivityRecognition stops firing intents if the device is Still for a certain period of time. They are immediately triggered when the device is in motion again.
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