我已通过 OTA 将我的 Nexus 5 升级到 Marshmallow。 由于更新简单的基于传感器的 Activity 不再起作用。 以下代码执行它在其他设备(Galaxy S4 Lolipop、AVD、...)上应该执行的操作

有人做过这个实验吗？我错过了什么吗？

代码如下:

build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 22
    buildToolsVersion "23.0.1"

    defaultConfig {
        applicationId "fr.rouk1.test"
        minSdkVersion 16
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
}

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest
    package="fr.rouk1"
    xmlns:android="http://schemas.android.com/apk/res/android">

    <uses-feature
        android:name="android.hardware.sensor.gyroscope"
        android:required="true"/>
    <uses-feature
        android:name="android.hardware.sensor.accelerometer"
        android:required="true"/>
    <uses-feature
        android:name="android.hardware.sensor.compass"
        android:required="true"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>

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

</manifest>

MainActivity.java

package fr.rouk1;

import android.app.Activity;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;


public class MainActivity extends Activity implements SensorEventListener {

    private TextView mText;

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

        mText = (TextView) findViewById(R.id.text);

        initSensor();
    }

    private void initSensor() {

        SensorManager sm = (SensorManager) this.getSystemService(Context.SENSOR_SERVICE);

        if (sm.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR) == null) {
            sm.registerListener(this,
                    sm.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
                    SensorManager.SENSOR_DELAY_NORMAL);

            sm.registerListener(this,
                    sm.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD),
                    SensorManager.SENSOR_DELAY_NORMAL);

            sm.registerListener(this,
                    sm.getDefaultSensor(Sensor.TYPE_GYROSCOPE),
                    SensorManager.SENSOR_DELAY_FASTEST);
        } else {
            sm.registerListener(this,
                    sm.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR),
                    SensorManager.SENSOR_DELAY_FASTEST);
        }
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        // this is never called

        String s = "";
        for (int i = 0; i < event.values.length; i++) {
            s = s.concat(String.format("%.4f, ", event.values[i]));
        }

        mText.setText(s);
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        switch (accuracy) {

            case SensorManager.SENSOR_STATUS_ACCURACY_HIGH:
                Log.d("rouk1", "SENSOR_STATUS_ACCURACY_HIGH");
                break;

            case SensorManager.SENSOR_STATUS_ACCURACY_LOW:
                Log.d("rouk1", "SENSOR_STATUS_ACCURACY_LOW");
                break;

            case SensorManager.SENSOR_STATUS_ACCURACY_MEDIUM:
                Log.d("rouk1", "SENSOR_STATUS_ACCURACY_MEDIUM");
                break;

            case SensorManager.SENSOR_STATUS_NO_CONTACT:
                Log.d("rouk1", "SENSOR_STATUS_NO_CONTACT");
                break;

            case SensorManager.SENSOR_STATUS_UNRELIABLE:
                Log.d("rouk1", "SENSOR_STATUS_UNRELIABLE");
                break;
        }
    }
}

最佳答案

终于找到这个issue . 临时解决方案是使用 SENSOR_DELAY_GAME 而不是 SENSOR_DELAY_FASTEST。

关于android - 由于 OTA 更新到 Marshmallow，我基于陀螺仪的应用程序不再工作，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33187393/