心率監視器不給反饋

Question

我想要顯示佩戴smartwatch（LG Urbane）的人的心率。然而，傳感器從不給出任何反饋。我在stackoverflow上嘗試了多種解決方案，但沒有一個有所作爲。我已經添加了在我的移動設備和我的可穿戴清單中使用身體感應器的權限請求，但是我從未收到要求所述權限的彈出窗口。卸載應用程序並重新安裝它也沒有幫助。

這是我的活動：

public class Monitor extends WearableActivity implements SensorEventListener{ 

    // /Users/Lieven/Library/Android/sdk/platform-tools/adb connect 192.168.1.15 
    // /Users/Lieven/Library/Android/sdk/platform-tools/adb -s 192.168.1.15:5555 uninstall be.ehb.dt.finalwork_lievenluyckx_v001 


    private final String LOG_TAG = "Monitor"; 

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


     Log.d(LOG_TAG, "onCreate"); 


     //JUISTE LETTERTYPE IN TEXTVIEWS ZETTEN 
     Typeface custom_font = Typeface.createFromAsset(getAssets(), "fonts/brusselineregular.ttf"); 

     TextView monitor_emotion_text = (TextView) findViewById(R.id.monitor_emotion_text); 
     TextView monitor_bpm_counter = (TextView) findViewById(R.id.monitor_bpm_counter); 
     TextView monitor_bpm_label = (TextView) findViewById(R.id.monitor_bpm_label); 

     monitor_emotion_text.setTypeface(custom_font); 
     monitor_bpm_counter.setTypeface(custom_font); 
     monitor_bpm_label.setTypeface(custom_font); 


     /* 
     * SENSOR TUTORIAL 
     * https://www.tutorialspoint.com/android/android_sensors.htm 
     * DOOR tutorialspoint 
     * */ 

     SensorManager sensorManager; 
     sensorManager = (SensorManager) this.getSystemService(SENSOR_SERVICE); 

     Sensor heartRateSensor; 
     heartRateSensor = sensorManager.getDefaultSensor(Sensor.TYPE_HEART_RATE); 

     sensorManager.registerListener(this, heartRateSensor, SensorManager.SENSOR_DELAY_NORMAL); 
     Log.d(LOG_TAG, "Listener registered"); 

    } 

    @Override 
    public void onSensorChanged(SensorEvent event) { 
     //Log.d(LOG_TAG, event.sensor.getType() + ""); 
     if (event.sensor.getType() == Sensor.TYPE_HEART_RATE) { 
      String msg = "" + (int)event.values[0]; 
      Log.d(LOG_TAG, msg); 
     } 
     else{ 
      Log.d(LOG_TAG, "Unknown sensor type"); 
     } 
    } 

    @Override 
    public void onAccuracyChanged(Sensor sensor, int accuracy) { 
     Log.d(LOG_TAG, "Accuracy changed to " + accuracy + ""); 
    } 


    @Override 
    public void onEnterAmbient(Bundle ambientDetails) { 
     super.onEnterAmbient(ambientDetails); 
     updateDisplay(); 
    } 

    @Override 
    public void onUpdateAmbient() { 
     super.onUpdateAmbient(); 
     updateDisplay(); 
    } 

    @Override 
    public void onExitAmbient() { 
     updateDisplay(); 
     super.onExitAmbient(); 
    } 

    private void updateDisplay() { 
     if (isAmbient()) { 
      /* CODE VOOR WANNEER HET SCHERM IN STANDBY VALT */ 
     } else { 

     } 
    } 

} 

這是我的穿戴式清單：

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="be.ehb.dt.finalwork_lievenluyckx_v001"> 

    <uses-feature android:name="android.hardware.type.watch" /> 

    <uses-permission android:name="android.permission.WAKE_LOCK" /> 

    <uses-permission android:name="android.permission.BODY_SENSORS"/> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/billie_coverdefault" 
     android:label="@string/app_name" 
     android:supportsRtl="true" 
     android:theme="@android:style/Theme.DeviceDefault"> 
     <uses-library 
      android:name="com.google.android.wearable" 
      android:required="false" /> 

     <activity 
      android:name=".Monitor" 
      android:label="@string/app_name" 
      android:theme="@android:style/Theme.DeviceDefault.Light"> 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
    </application> 

</manifest> 

這是我第一次創造了一個可穿戴設備的應用程序，而且感覺就像是很難獲取任何有用的文檔。

build.grade（磨損）

apply plugin: 'com.android.application' 

android { 
    allprojects { 
     repositories { 
      jcenter() 
      maven { 
       url "https://maven.google.com" 
      } 
     } 
    } 

    compileSdkVersion 25 
    buildToolsVersion "25.0.1" 
    defaultConfig { 
     applicationId "be.ehb.dt.finalwork_lievenluyckx_v001" 
     minSdkVersion 25 
     targetSdkVersion 25 
     versionCode 1 
     versionName "1.0" 
    } 
    buildTypes { 
     release { 
      minifyEnabled false 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
     } 
    } 
} 

dependencies { 
    compile 'com.android.support:wear:26.0.0' 
    compile 'com.google.android.support:wearable:2.0.3' 
    provided 'com.google.android.wearable:wearable:2.0.3' 
} 

的build.gradle（MOBILE）

apply plugin: 'com.android.application' 


android { 
    compileSdkVersion 25 
    buildToolsVersion "25.0.0" 
    defaultConfig { 
     applicationId "be.ehb.dt.finalwork_lievenluyckx_v001" 
     minSdkVersion 23 
     targetSdkVersion 25 
     versionCode 1 
     versionName "1.0" 
     testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 

     jackOptions { 
      enabled true 
     } 
    } 
    buildTypes { 
     release { 
      minifyEnabled false 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
     } 

    } 

    compileOptions { 
     sourceCompatibility JavaVersion.VERSION_1_8 
     targetCompatibility JavaVersion.VERSION_1_8 
    } 
} 

dependencies { 
    compile fileTree(include: ['*.jar'], dir: 'libs') 
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.1', { 
     exclude group: 'com.android.support', module: 'support-annotations' 
    }) 
    wearApp project(':wear') 
    compile 'com.google.android.gms:play-services:8.1.0' 
    compile 'com.android.support:appcompat-v7:24.1.1' 
    compile 'com.mpatric:mp3agic:0.9.0' 
    testCompile 'junit:junit:4.12' 


} 

Answer 1

從Android guide for permissions：

如果設備運行Android 6.0（API級別23）或更高，並且應用程序的targetSdkVersion爲23或更高，應用程序會在運行時向用戶請求權限。

您的目標API爲25，身體傳感器被認爲是「危險的權限」，因此您必須在運行時請求權限。請參閱this以獲取運行時請求權限的指導。