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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>
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新建MyIntentService.java- package 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: ");
- }
- }
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然后修改mainactivity.java- package 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;
- }
- }
- }
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AndroidManifest.xml里application标签下添加- <service android:name=".MyIntentService"/>
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启动程序后IntentService里运行的线程跟主线程会不同。 |
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