在Android中使用PARTIAL_WAKE_LOCK关闭屏幕

Question

我正在使用以下代码在设备移动时发送一些HTTP请求。 当我将PARTIAL_WAKE_LOCK更改为SCREEN_DIM_WAKE_LOCK时，它可以正常工作，并且可以保持屏幕打开和应用正常运行。 但是，使用PARTIAL_WAKE_LOCK时，设备将锁定屏幕，并且该应用程序将完全停止运行。 我需要关闭屏幕，这样我才能节省电池电量，但是更改为PARTIAL_WAKE_LOCK似乎并没有达到预期的效果。

package com.example.sendsms;

import android.app.Activity;
import android.app.DownloadManager;
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.PowerManager;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.AutoCompleteTextView;
import android.widget.FilterQueryProvider;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.Toast;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.google.android.gms.appindexing.Action;
import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.api.GoogleApiClient;


public class SendSMSActivity extends Activity implements SensorEventListener {
    static String TAG = "SendSMS";
    private SensorManager senSensorManager;
    private Sensor senAccelerometer;
    private long lastUpdate;
    private float last_x, last_y, last_z;
    // Wake Locks
    protected static PowerManager mPowerManager;
    protected static PowerManager.WakeLock mWakeLock1;

    /**
     * ATTENTION: This was auto-generated to implement the App Indexing API.
     * See https://g.co/AppIndexing/AndroidStudio for more information.
     */
    private GoogleApiClient client;


    protected void onResume() {
        super.onResume();
        senSensorManager.registerListener(this, senAccelerometer, SensorManager.SENSOR_DELAY_NORMAL);
    }

    protected void onPause() {
        super.onPause();
        senSensorManager.unregisterListener(this);
    }

    @Override
    public void onSensorChanged(SensorEvent sensorEvent) {
        //To change body of implemented methods use File | Settings | File Templates.
        Sensor mySensor = sensorEvent.sensor;

        if (mySensor.getType() == Sensor.TYPE_ACCELEROMETER) {
            float x = sensorEvent.values[0];
            float y = sensorEvent.values[1];
            float z = sensorEvent.values[2];

            long curTime = System.currentTimeMillis();
            // only allow one update every 100ms.
            if ((curTime - lastUpdate) > 100) {
                long diffTime = (curTime - lastUpdate);
                lastUpdate = curTime;

                float speed = Math.abs(x + y + z - last_x - last_y - last_z) / diffTime * 10000;
                if (speed > 50) {
                    sendit2();
                }
                last_x = x;
                last_y = y;
                last_z = z;
            }
        }
    }

    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        // can be safely ignored for this demo
    }

    /**
     * Called when the activity is first created.
     */
    // Accelerometer Wake Lock
    public static void wakeLock1(boolean up) {
        if (up) {
            mWakeLock1 = mPowerManager.newWakeLock(
                    PowerManager.PARTIAL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP,
                    "WakeLock:Accelerometer"
            );
            mWakeLock1.acquire();
        } else {
            if (mWakeLock1 != null) {
                if (mWakeLock1.isHeld()) {
                    mWakeLock1.release();
                }
                mWakeLock1 = null;
            }
        }
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        // Get an instance of the SensorManager
        senSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
        senAccelerometer = senSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        senSensorManager.registerListener(this, senAccelerometer, SensorManager.SENSOR_DELAY_NORMAL);

        mPowerManager = (PowerManager)getApplicationContext().getSystemService(Context.POWER_SERVICE);
        wakeLock1(true);

        // Important 1: You have to provide a way of making the chosen choice look presentable.
        // emailAdapter.setStringConversionColumn(1); // 1=DISPLAY_NAME, 2=Email

        // ATTENTION: This was auto-generated to implement the App Indexing API.
        // See https://g.co/AppIndexing/AndroidStudio for more information.
        client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
    }

    public void sendit2() {

        String spreadsheetID = "111111111-1111111111111-FP3OQmeVwV";
        String url = "https://script.google.com/macros/s/" + spreadsheetID + "/exec";
        // Instantiate the RequestQueue.
        RequestQueue queue = Volley.newRequestQueue(this);

        // Request a string response from the provided URL.
        StringRequest stringRequest = new StringRequest(Request.Method.POST, url,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {

                        Log.d(TAG, response);
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
            }
        });
        // Add the request to the RequestQueue.
        queue.add(stringRequest);
    }

    @Override
    public void onStart() {
        super.onStart();

        // ATTENTION: This was auto-generated to implement the App Indexing API.
        // See https://g.co/AppIndexing/AndroidStudio for more information.
        client.connect();
        Action viewAction = Action.newAction(
                Action.TYPE_VIEW, // TODO: choose an action type.
                "SendSMS Page", // TODO: Define a title for the content shown.
                // TODO: If you have web page content that matches this app activity's content,
                // make sure this auto-generated web page URL is correct.
                // Otherwise, set the URL to null.
                Uri.parse("http://host/path"),
                // TODO: Make sure this auto-generated app URL is correct.
                Uri.parse("android-app://com.example.sendsms/http/host/path")
        );
        AppIndex.AppIndexApi.start(client, viewAction);
    }

    @Override
    public void onStop() {
        super.onStop();

        // ATTENTION: This was auto-generated to implement the App Indexing API.
        // See https://g.co/AppIndexing/AndroidStudio for more information.
        Action viewAction = Action.newAction(
                Action.TYPE_VIEW, // TODO: choose an action type.
                "SendSMS Page", // TODO: Define a title for the content shown.
                // TODO: If you have web page content that matches this app activity's content,
                // make sure this auto-generated web page URL is correct.
                // Otherwise, set the URL to null.
                Uri.parse("http://host/path"),
                // TODO: Make sure this auto-generated app URL is correct.
                Uri.parse("android-app://com.example.sendsms/http/host/path")
        );
        AppIndex.AppIndexApi.end(client, viewAction);
        client.disconnect();
    }
}

这是清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.sendsms"
    android:versionCode="1"
    android:versionName="1.0" >

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

    <application
>
        <activity
            android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
            android:name=".SendSMSActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity><!-- ATTENTION: This was auto-generated to add Google Play services to your project for
     App Indexing.  See https://g.co/AppIndexing/AndroidStudio for more information. -->

        <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version" />
    </application>


    <uses-sdk android:minSdkVersion="15"></uses-sdk>
<uses-permission android:name="android.permission.VIBRATE"></uses-permission>
</manifest>

Answer 1

不要浪费你的时间。 您可以在此处阅读， PARTIAL_WAKE_LOCK不会阻止android进入PARTIAL_WAKE_LOCK模式，因此传感器的活动被暂停或至少延迟了。 在我的测试中，我看到只有将设备连接到电源时，这种行为才是预期的。