心率监测器不提供反馈

Question

我正在尝试显示佩戴智能手表（LG Urbane）的人的心率。然而，传感器从未给出任何反馈。我在stackoverflow上尝试了多个解决方案，但都没有效果。我已经在我的手机和可穿戴清单中添加了一个使用身体传感器的请求，但我从未收到一个请求上述许可的弹出窗口。卸载应用程序并重新安装也没有帮助。

这是我的活动：

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 {

        }
    }

}

这是我的可穿戴舱单：

<?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>

这是我第一次为可穿戴设备创建应用程序，感觉很难获得任何有用的文档。

建筑等级（磨损）

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'
}

建筑格拉德尔（流动电话）

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

从Android指南获取权限：

如果设备运行的是Android 6.0（API级别23）或更高版本，并且应用的目标SdkVersion为23或更高，则应用会在运行时向用户请求权限。

您的目标API为25，身体传感器被视为“危险权限”，因此您必须在运行时请求权限。请参阅本指南，了解有关在运行时请求权限的指导。