安卓服务的启动方式之一 bindService unbindService

╰+哭是因爲堅強的太久メ 2022-06-07 04:14 152阅读 0赞

\`**MainActivity.class**“

public class MainActivity extends AppCompatActivity {
    private Intent intent;
    private MyConn conn;
    private IMyBinder myBinder;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    //开启服务按钮的点击事件
    public void start(View view) {
        intent = new Intent(this, MyService.class);
        conn = new MyConn();
        //绑定服务，
        // 第一个参数是intent对象，表面开启的服务。
        // 第二个参数是绑定服务的监听器
        // 第三个参数一般为BIND_AUTO_CREATE常量，表示自动创建bind
        bindService(intent, conn, BIND_AUTO_CREATE);
    }
    
    //调用服务方法按钮的点击事件
    public void invoke(View view) {
        if (null != myBinder)
            myBinder.invokeMethodInMyService();
            else {
                Toast.makeText(getApplicationContext(), "服务还没开启。。。",
                        Toast.LENGTH_SHORT).show();
            }
    }
    
    private class MyConn implements ServiceConnection {
        @Override
        public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
            Log.d("yw", componentName.toString());
            myBinder = (IMyBinder) iBinder;
        }
    
        @Override
        public void onServiceDisconnected(ComponentName componentName) {
    
        }
    }
    
    @Override
    protected void onDestroy() {
        super.onDestroy();
        unbindService(conn);     //取消服务的绑定
    }

**MyService服务类**
    public class MyService extends Service { 
        public MyService() {
        } 
    
        @Override
        public IBinder onBind(Intent intent) {
             return new MyBinder();
        }
    
        private void serviceMethod() {
            Toast.makeText(getApplicationContext(), "服务里的方法执行了。。。",
                    Toast.LENGTH_SHORT).show();
        }
    
        private class MyBinder extends Binder implements IMyBinder { 
    
            @Override
            public void invokeMethodInMyService() {
                serviceMethod();
            }
        }
    }

**IMyBinder接口**

public interface IMyBinder {
        void invokeMethodInMyService();
    }

**最后不要忘记了去配置文件注册一下服务**

源码下载链接：[https://github.com/yang-mr/android\_note.git][https_github.com_yang-mr_android_note.git] （bindServiceDemo这个里面）

[https_github.com_yang-mr_android_note.git]: https://github.com/yang-mr/android_note.git