Привет, я сослался на Планировщик заданий по этой ссылке . Когда я хочу запустить службу с помощью кнопки активности, служба не запускается. Я перечислил код. Может ли кто-нибудь помочь, если я ошибся?
MainActivity
package com.example.samplejobscheduler;
import androidx.appcompat.app.AppCompatActivity;
import android.app.job.JobInfo;
import android.app.job.JobScheduler;
import android.content.ComponentName;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void scheduleJob(View v) {
ComponentName componentName = new ComponentName(this, MySchedulerService.class);
JobInfo info = new JobInfo.Builder(123, componentName)
.setRequiresCharging(true)
.setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
.setPersisted(true)
.setPeriodic(2 * 60 * 1000)
.build();
JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
int resultCode = scheduler.schedule(info);
if (resultCode == JobScheduler.RESULT_SUCCESS) {
Log.d(TAG, "Job scheduled");
} else {
Log.d(TAG, "Job scheduling failed");
}
}
public void cancelJob(View v) {
JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
scheduler.cancel(123);
Log.d(TAG, "Job cancelled");
}}
MySchedulerService
public class MySchedulerService extends JobService {
private static final String TAG = "MySchedulerService";
private boolean jobCancelled = false;
@Override
public boolean onStartJob(JobParameters params) {
Log.d(TAG, "Job started");
doBackgroundWork(params);
return true;
}
private void doBackgroundWork(final JobParameters params) {
new Thread(new Runnable() {
@Override
public void run() {
for (int i = 0; i < 10; i++) {
Log.d(TAG, "run: " + i);
if (jobCancelled) {
return;
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
Log.d(TAG, "Job finished");
jobFinished(params, false);
}
}).start();
}
@Override
public boolean onStopJob(JobParameters params) {
Log.d(TAG, "Job cancelled before completion");
jobCancelled = true;
return true;
}}
Activity_main
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical"
tools:context="com.example.samplejobscheduler.MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="scheduleJob"
android:text="Schedule Job" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="cancelJob"
android:text="Cancel Job" />
</LinearLayout>
AndroidManifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.samplejobscheduler">
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.FOREGROUND_SERVICE"></uses-permission>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
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>
<service
android:name=".MySchedulerService"
android:permission="android.permission.BIND_JOB_SERVICE" />
</application>
</manifest>
build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "29.0.1"
defaultConfig {
applicationId "com.example.samplejobscheduler"
minSdkVersion 21
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}