package zhang.phil;
import android.content.Context;
import android.content.Intent;
import android.os.Handler;
import android.os.SystemClock;
import android.util.Log;
import android.widget.Toast;
import androidx.core.app.JobIntentService;
public class DemoService extends JobIntentService {
public static final String TAG = "后台服务";
private final static int jobId = 0xa001;
@Override
public void onCreate() {
super.onCreate();
Log.d(TAG, "onCreate");
}
public static void enqueueWork(Context context, Intent work) {
enqueueWork(context, DemoService.class, jobId, work);
}
@Override
protected void onHandleWork(Intent intent) {
String s = intent.getStringExtra(TAG);
for (int i = 0; i < 3; i++) {
SystemClock.sleep(5000);
Log.d(TAG, Thread.currentThread().getId()+":"+s + "->" + i);
}
toast("任务结束");
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "onDestroy");
}
private final Handler mHandler = new Handler();
private void toast(final CharSequence text) {
mHandler.post(new Runnable() {
@Override
public void run() {
Toast.makeText(DemoService.this, text, Toast.LENGTH_SHORT).show();
}
});
}
}
需要在Androidmanifest.xml定义服务:
<service android:name=".DemoService" android:permission="android.permission.BIND_JOB_SERVICE" />
上层使用:
package zhang.phil;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(DemoService.TAG, Thread.currentThread().getId() + ",MainActivity线程id");
Intent intent = new Intent();
intent.putExtra(DemoService.TAG, "zhangphil");
DemoService.enqueueWork(this, intent);
}
@Override
protected void onDestroy() {
super.onDestroy();
Log.d(DemoService.TAG, "onDestroy,MainActivity");
}
}
《Android JobScheduler 、JobScheduler》https://blog.csdn.net/zhangphil/article/details/97403956
《Android任务调度JobScheduler,JobService》https://blog.csdn.net/zhangphil/article/details/93621525