android 10.5.2
上一节使用前台服务书上的哪种方式已经不适用了，只能启动服务跟通知分开写，这里就不多做研究了。主要说下IntentService的使用，在原来的项目中修改activity_main.xml<?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout 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"
tools:context="com.example.xinwei.servicetest.MainActivity">
<Button
android:id="@+id/start_service"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginStart="16dp"
android:layout_marginTop="8dp"
android:text="start service"
app:layout_constraintBottom_toTopOf="@+id/bind_service"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.502" />
<Button
android:id="@+id/stop_service"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="stop service"
app:layout_constraintBottom_toTopOf="@+id/unbind_service"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.783"
app:layout_constraintStart_toEndOf="@+id/start_service"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.502" />
<Button
android:id="@+id/bind_service"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="168dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:text="bind service"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/unbind_service"
app:layout_constraintHorizontal_bias="0.2"
app:layout_constraintStart_toStartOf="parent" />
<Button
android:id="@+id/unbind_service"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="168dp"
android:layout_marginEnd="28dp"
android:text="unbind service"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
<Button
android:id="@+id/start_intent_service"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="start intentservice"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.442" />
</android.support.constraint.ConstraintLayout>
新建MyIntentService.javapackage com.example.xinwei.servicetest;
import android.app.IntentService;
import android.content.Intent;
import android.support.annotation.Nullable;
import android.util.Log;
/**
* Created by xinwei on 2017/11/11.
*/
public class MyIntentService extends IntentService {
private static final String TAG = "MyIntentService";
public MyIntentService() {
super("MyIntentService");
}
@Override
protected void onHandleIntent(@Nullable Intent intent) {
Log.d(TAG, "onHandleIntent: "+Thread.currentThread().getId());
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "onDestroy: ");
}
}
然后修改mainactivity.javapackage com.example.xinwei.servicetest;
import android.app.Notification;
import android.app.PendingIntent;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.graphics.BitmapFactory;
import android.os.IBinder;
import android.support.v4.app.NotificationCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private static final String TAG = "MainActivity";
private MyService.DownloadBinder downloadBinder;
private ServiceConnection connection=new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName componentName, IBinder service) {
downloadBinder=(MyService.DownloadBinder)service;
downloadBinder.startDownload();
downloadBinder.getProgress();
}
@Override
public void onServiceDisconnected(ComponentName componentName) {
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button startService = (Button)findViewById(R.id.start_service);
Button stopService = (Button)findViewById(R.id.stop_service);
startService.setOnClickListener(this);
stopService.setOnClickListener(this);
Button bindService = (Button)findViewById(R.id.bind_service);
Button unbindService = (Button)findViewById(R.id.unbind_service);
Button startIntentService=(Button)findViewById(R.id.start_intent_service);
bindService.setOnClickListener(this);
unbindService.setOnClickListener(this);
startIntentService.setOnClickListener(this);
}
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.start_service:
Intent startIntent = new Intent(this,MyService.class);
startService(startIntent);
break;
case R.id.stop_service:
Intent stopIntent = new Intent(this,MyService.class);
stopService(stopIntent);
break;
case R.id.bind_service:
Intent bindIntent=new Intent(this,MyService.class);
bindService(bindIntent,connection,BIND_AUTO_CREATE);
break;
case R.id.unbind_service:
unbindService(connection);
break;
case R.id.start_intent_service:
Log.d(TAG, "onClick: "+Thread.currentThread().getId());
Intent intentService=new Intent(this,MyIntentService.class);
startService(intentService);
break;
default:
break;
}
}
}
AndroidManifest.xml里application标签下添加<service android:name=".MyIntentService"/>
启动程序后IntentService里运行的线程跟主线程会不同。
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