在 Android 和 PARTIAL_WAKE_LOCK 中关闭屏幕
Turning Screen Off in Android with PARTIAL_WAKE_LOCK
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 时它工作正常并且它保持屏幕打开和应用程序工作。但是，当使用 PARTIAL_WAKE_LOCK 时，设备会锁定屏幕并且应用程序会完全停止工作。我需要关闭屏幕以节省电池使用量，但更改为 PARTIAL_WAKE_LOCK 似乎没有达到预期效果。
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>
不要浪费你的时间。 PARTIAL_WAKE_LOCK 不会阻止 android 进入打瞌睡模式，因为您可以阅读 here，因此传感器 activity 被暂停或至少延迟。在我的测试中，我发现只有当设备连接到电源时，行为才是预期的。
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 时它工作正常并且它保持屏幕打开和应用程序工作。但是，当使用 PARTIAL_WAKE_LOCK 时，设备会锁定屏幕并且应用程序会完全停止工作。我需要关闭屏幕以节省电池使用量，但更改为 PARTIAL_WAKE_LOCK 似乎没有达到预期效果。
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>
不要浪费你的时间。 PARTIAL_WAKE_LOCK 不会阻止 android 进入打瞌睡模式，因为您可以阅读 here，因此传感器 activity 被暂停或至少延迟。在我的测试中，我发现只有当设备连接到电源时，行为才是预期的。