Android Studio AIDL创建案例（解决自动生成java问题）

你的名字 2023-07-01 10:56 14阅读 0赞

## AIDL创建 ##

1.  新建Aidldemo项目

![这里写图片描述][20160512172825072]

*  选中APP-右键-new-AIDL-AIDL file  
    ![这里写图片描述][20160512173157151]
 *  会出现一个aidl目录，但是注意此时还没有生成对应的java文件，如下图所示  
    ![这里写图片描述][20160512173552348]
 *  点击Build-Clean Project(Rebuild 也可以)，aidl对应的java文件就会出现了  
    ![这里写图片描述][20160512173842935]
 *  ## 写个加法计算器 ##
    
     *  更改aidl目录下的aidl文件如下：
    
        interface IAdditionService {
            int add(in int x, in int y);
        }
         
            
         
            
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 *  在MainActivity同级目录下，创建一个Service
 *  ![这里写图片描述][20160512174422703]
    
    更改代码如下：
    
        public class AdditionService extends Service { 
            public AdditionService() {
            }
        
            @Override
            public IBinder onBind(Intent intent) {
                // TODO: Return the communication channel to the service.
                return mBinder;
        
            }
        
            IAdditionService.Stub mBinder = new IAdditionService.Stub() {
                @Override
                public int add(int x, int y) throws RemoteException {
                    return x + y;
                }
            };
        }
         
            
         
            
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 *  写个简单的布局，输入两个加数，点击按钮相加，并输出结果
 *      ```
        <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:orientation="vertical"
            android:paddingBottom="@dimen/activity_vertical_margin"
            android:paddingLeft="@dimen/activity_horizontal_margin"
            android:paddingRight="@dimen/activity_horizontal_margin"
            android:paddingTop="@dimen/activity_vertical_margin"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"
            tools:context="example.guanhang.aidldemo.MainActivity"
            tools:showIn="@layout/activity_main">
        
            <EditText
                android:id="@+id/et_num1"
                android:layout_width="180dp"
                android:layout_gravity="center"
                android:layout_height="wrap_content"
                 />
            <EditText
                android:id="@+id/et_num2"
                android:layout_width="180dp"
                android:layout_gravity="center"
                android:layout_height="wrap_content"
                />
            <Button
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:onClick="add"
                android:text="相加"
                />
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal">
                <TextView
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:text="相加结果为:"
                    />
                <TextView
                    android:id="@+id/tv"
                    android:layout_weight="2"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    />
        
            </LinearLayout>
        
        </LinearLayout>
        ```
        
         
            
         
            
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     *  修改MainActivity的代码
    
        public class MainActivity extends AppCompatActivity { 
        
            IAdditionService mService;
        
            @Override
            protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);
                Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
                setSupportActionBar(toolbar);
        
                FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
                fab.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                                .setAction("Action", null).show();
                    }
                });
        
                Intent intentService = new Intent(this,AdditionService.class);
                bindService(intentService, mConnection, Context.BIND_AUTO_CREATE);
            }
        
            ServiceConnection mConnection = new ServiceConnection() {
                @Override
                public void onServiceConnected(ComponentName name, IBinder service) {
                    mService = IAdditionService.Stub.asInterface(service);
                }
        
                @Override
                public void onServiceDisconnected(ComponentName name) {
        
                }
            };
        
            public void add(View view) throws RemoteException {
                EditText et1 = (EditText) findViewById(R.id.et_num1);
                EditText et2 = (EditText) findViewById(R.id.et_num2);
        
                TextView tv = (TextView) findViewById(R.id.tv);
        
                int x = Integer.parseInt(et1.getText().toString());
                int y = Integer.parseInt(et2.getText().toString());
                int result = mService.add(x, y);
                tv.setText(result +"");
            }
        }
         
            
         
            
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 *  结果  
    ![这里写图片描述][20160512181655293]
 *  ## 新建另一个项目，来启动这个远程服务 ##
    
    新建StartAdd 项目，在该项目启动Aidldemo中的加法服务，布局照抄上面那个项目  
    ![这里写图片描述][20160512183639834]
    
    不过这个项目因为没有Service的类,所以要在之前的那个项目中，加上隐式启动服务的过滤器
    
    ![这里写图片描述][20160512183627521]
    
    **注意：**该项目新建的aidl要和之前项目的aidl包名以及文件内容要一模一样，所以这时不能右键新建AIDL file了（因为，这样默认的包名是当前项目的包名，和之前的aidl的文件的package是不符的）。因此要：
    
     *  新建一个包，名字和上面项目Aidl所在的包名一致
     *  把上面那个项目的aidl文件直接拷到这个包里面
     *  Clean Project ，自动生成相应的java文件
    
    修改MainActivity:
    
        public class MainActivity extends AppCompatActivity { 
        
            IAdditionService mService;
        
            @Override
            protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);
                Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
                setSupportActionBar(toolbar);
        
                FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
                fab.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                                .setAction("Action", null).show();
                    }
                });
        
                Intent intent = new Intent();
                intent.setAction("com.guanhang.add");
                bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
            }
        
            ServiceConnection mConnection = new ServiceConnection() {
                @Override
                public void onServiceConnected(ComponentName name, IBinder service) {
                    mService = IAdditionService.Stub.asInterface(service);
                }
        
                @Override
                public void onServiceDisconnected(ComponentName name) {
        
                }
            };
        
            public void add(View view) throws RemoteException {
                EditText et1 = (EditText) findViewById(R.id.et_num1);
                EditText et2 = (EditText) findViewById(R.id.et_num2);
        
                TextView tv = (TextView) findViewById(R.id.tv);
        
                int x = Integer.parseInt(et1.getText().toString());
                int y = Integer.parseInt(et2.getText().toString());
                int result = mService.add(x, y);
                tv.setText(result +"");
            }
        }
         
            
         
            
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    运行结果：  
    ![这里写图片描述][20160512184151356]

[20160512172825072]: https://img-blog.csdn.net/20160512172825072
[20160512173157151]: https://img-blog.csdn.net/20160512173157151
[20160512173552348]: https://img-blog.csdn.net/20160512173552348
[20160512173842935]: https://img-blog.csdn.net/20160512173842935
[20160512174422703]: https://img-blog.csdn.net/20160512174422703
[20160512181655293]: https://img-blog.csdn.net/20160512181655293
[20160512183639834]: https://img-blog.csdn.net/20160512183639834
[20160512183627521]: https://img-blog.csdn.net/20160512183627521
[20160512184151356]: https://img-blog.csdn.net/20160512184151356