Android AIDL实现两个APP间的跨进程通信 Android AIDL实现两个APP间的跨进程通信实例

时间:2021-03-28 rongyili88 人气:1

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本文为大家分享了Android AIDL实现两个APP间的跨进程通信实例，供大家参考，具体内容如下

1 Service端创建

首先需要创建一个Android工程然后创建AIDL文件，创建AIDL文件主要为了生成继承了Binder的Stub类，以便应用Binder进行进程间通信

servier端结构如下

Server端结构

AIDL代码如下

// IBookManager.aidl
package com.example.bookserver.aidl;

// Declare any non-default types here with import statements
import com.example.bookserver.aidl.Book;
interface IBookManager {
 /**
  * Demonstrates some basic types that you can use as parameters
  * and return values in AIDL.
  */
 void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat,
   double aDouble, String aString);

 List<Book> getBook();
 boolean addBook(in Book book);

}

package com.example.bookserver.aidl;

parcelable Book;

之后创建一个实现了Parcelable的Book.java类用来传递数据

package com.example.bookserver.aidl;

import android.os.Parcel;
import android.os.Parcelable;

/**
 * Created by SAMSUNG on 2016-09-07.
 */
public class Book implements Parcelable {
 private int id;
 private String name ;

 public int getId() {
  return id;
 }

 public void setId(int id) {
  this.id = id;
 }

 public String getName() {
  return name;
 }

 public void setName(String name) {
  this.name = name;
 }

 @Override
 public String toString() {
  return "Book{" +
    "id=" + id +
    ", name='" + name + '\'' +
    '}';
 }

 @Override
 public int describeContents() {
  return 0;
 }

 @Override
 public void writeToParcel(Parcel dest, int flags) {
  dest.writeInt(this.id);
  dest.writeString(this.name);
 }

 public Book() {
 }

 protected Book(Parcel in) {
  this.id = in.readInt();
  this.name = in.readString();
 }

 public static final Parcelable.Creator<Book> CREATOR = new Parcelable.Creator<Book>() {
  @Override
  public Book createFromParcel(Parcel source) {
   return new Book(source);
  }

  @Override
  public Book[] newArray(int size) {
   return new Book[size];
  }
 };
}

最后我们来写一个Service用于客户端绑定

package com.example.bookserver.service;

import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.os.RemoteException;

import com.example.bookserver.aidl.Book;
import com.example.bookserver.aidl.IBookManager;

import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;


public class BookService extends Service {
 private CopyOnWriteArrayList<Book> boookList = new CopyOnWriteArrayList<Book>();
 public BookService() {

 }
 Binder binder = new IBookManager.Stub(){

  @Override
  public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, String aString) throws RemoteException {

  }

  @Override
  public List<Book> getBook() throws RemoteException {
   return boookList;
  }

  @Override
  public boolean addBook(Book book) throws RemoteException {
   return boookList.add(book);
  }
 };
 @Override
 public IBinder onBind(Intent intent) {
  return binder;
 }

 @Override
 public void onCreate() {
  super.onCreate();
  Book book = new Book();
  book.setId(12345);
  book.setName("Book 1");
  boookList.add(book);
 }
}

这样Server端就搞定了，接下来就该进行Client端的代码编写了

2 Client端

Client端结构如下

Client端结构

首先我们要讲AndroidStudio 通过AIDL生成的Binder导入到Client中并将Book.java也导入到Client中
然后写进行Service的绑定

package com.example.bookclient;

import android.app.Service;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.IBinder;
import android.util.Log;

import com.example.bookserver.aidl.IBookManager;

import java.util.List;

/**
 * Created by SAMSUNG on 2016-09-07.
 */
public class BookServiceManager {
 Context mContext = null;
 IBookManager mService = null;
 private static BookServiceManager bsm ;
 public static BookServiceManager getInstance(Context context){
  if(bsm==null){
   bsm = new BookServiceManager(context);
  }
  return bsm;
 }
 public IBookManager getBookServie(){
  while (mService==null){
   Log.d("BookServiceManager", "getBookServie: ");
   this.connectService();

  }
  return mService;
 }

 public BookServiceManager(Context mContext) {
  this.mContext = mContext;
 }

 ServiceConnection scc = new ServiceConnection() {
  @Override
  public void onServiceConnected(ComponentName name, IBinder service) {
   Log.d("BookServiceManager", "getBookServie: 2 ==> Bind ");
   mService = IBookManager.Stub.asInterface(service);
  }

  @Override
  public void onServiceDisconnected(ComponentName name) {
   mService = null;
  }
 };
 public boolean connectService(){
  if(mService == null){
   Log.d("BookServiceManager", "getBookServie: 2");
   Intent intent = new Intent("com.example.bookserver.service.BookService");
   final Intent eintent = new Intent(createExplicitFromImplicitIntent(mContext,intent));
   mContext.bindService(eintent,scc, Service.BIND_AUTO_CREATE);
  }
  return true;
 }

 public static Intent createExplicitFromImplicitIntent(Context context, Intent implicitIntent) {
  // Retrieve all services that can match the given intent
  PackageManager pm = context.getPackageManager();
  List<ResolveInfo> resolveInfo = pm.queryIntentServices(implicitIntent, 0);

  // Make sure only one match was found
  if (resolveInfo == null || resolveInfo.size() != 1) {
   return null;
  }

  // Get component info and create ComponentName
  ResolveInfo serviceInfo = resolveInfo.get(0);
  String packageName = serviceInfo.serviceInfo.packageName;
  String className = serviceInfo.serviceInfo.name;
  ComponentName component = new ComponentName(packageName, className);

  // Create a new intent. Use the old one for extras and such reuse
  Intent explicitIntent = new Intent(implicitIntent);

  // Set the component to be explicit
  explicitIntent.setComponent(component);

  return explicitIntent;
 }
}

最后对设置Button进行调用

package com.example.bookclient;

import android.os.Bundle;
import android.os.RemoteException;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import com.example.bookserver.aidl.Book;
import com.example.bookserver.aidl.IBookManager;

public class MainActivity extends AppCompatActivity {
 IBookManager mBookService ;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  Button button = (Button) findViewById(R.id.button);
  Button addButton = (Button) findViewById(R.id.button3);
  Button findButton = (Button) findViewById(R.id.button2);
  BookServiceManager.getInstance(getApplication()).connectService();
  button.setOnClickListener(new View.OnClickListener(){

   @Override
   public void onClick(View v) {

    mBookService = BookServiceManager.getInstance(getApplication()).getBookServie();

   }
  });

  addButton.setOnClickListener(new View.OnClickListener(){

   @Override
   public void onClick(View v) {
    Book book = new Book();
    book.setId(2345);
    book.setName("add book!!");
    try {
     mBookService.addBook(book);
    } catch (RemoteException e) {
     e.printStackTrace();
    }

   }
  });

  findButton.setOnClickListener(new View.OnClickListener(){

   @Override
   public void onClick(View v) {

    try {
      Log.d("MainActivity", mBookService.getBook().toString());
    } catch (RemoteException e) {
     e.printStackTrace();
    }

   }
  });
 }
}

这样我们就实现了AIDL的不同APP的调用。

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