Service之BindService

5.0以上隐式开启service会出现Service Intent must be explicit异常

解决办法不仅要设置action，还要设置package

隐式创建：

1.首先创建一个继承service的类

public class PayService extends Service {    @Override    public void onCreate() {        super.onCreate();        System.out.println("onCreate启动");    }    @Nullable    @Override    public IBinder onBind(Intent intent) {            System.out.println("onBind启动");        return new MyBind();    }    public class MyBind extends Binder{        public void payMethod(){            methodInService();        }    }    public void methodInService(){        System.out.println("支付开始");    }    @Override    public boolean onUnbind(Intent intent) {        System.out.println("onUnbind启动");        return super.onUnbind(intent);    }    @Override    public void onDestroy() {        super.onDestroy();        System.out.println("onDestroy启动");    }}

在清单文件中注册

  <service android:name=".PayService">            <intent-filter>                <action android:name="com.demo.alipay"/>            </intent-filter>        </service>

在mainActivity中启动

public class MainActivity extends AppCompatActivity {    private Intent intent;    private PayService.MyBind myBind;    private MyConn myConn;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        intent = new Intent();        intent.setAction("com.demo.alipay");        intent.setPackage("com.demo.bindservice");    }    @Override    protected void onResume() {        super.onResume();        if(myConn==null)            myConn=new MyConn();        bindService(intent,myConn,BIND_AUTO_CREATE);    }    private class MyConn implements ServiceConnection {        @Override        public void onServiceConnected(ComponentName name, IBinder service) {            System.out.println("myconn启动");            myBind = (PayService.MyBind) service;        }        @Override        public void onServiceDisconnected(ComponentName name) {        }    }    @Override    protected void onDestroy() {        super.onDestroy();        unbindService(myConn);    }

执行结果

触发支付在点击事件里

    public void clicks(View view){        myBind.payMethod();    }

以上就是隐式启动service以及调用service里方法

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BindService另一个作用就是进程间通讯

在android studio 创建 aidl文件

首先在android studio中创建一个aidl可以直接new一个aidl

然后会在app同级目录下创建aidl文件夹

如果手动创建aidl文件 也请移动aidl文件夹以及包名为项目package名下。然后rebuild一下 就可以看到

然后之前的PayService中MyBind继承IService.Stub

 public class MyBind extends IService.Stub{        @Override        public void callMethodInService() throws RemoteException {            methodInService();        }    }