如何将BroadcastReceiver中的信息传到Activity中

方法：在BroadcastReceiver中定义一个接口，在Activity中定义一个BroadcastReceiver的对象，采用动态注册，在Activity中定义接口中的方法并通过BroadcastReceiver对象调用该方法，具体代码如下：

自定义BroadcastReceiver：

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.widget.Toast;

public class MyBroadcastReceiver extends BroadcastReceiver {

private Handle handle;

    @Override

    public void onReceive(Context context, Intent intent) {

        // TODO: This method is called when the BroadcastReceiver is receiving

        // an Intent broadcast.

        String msg=intent.getStringExtra("msg");

        handle.handle(msg);//调用接口中的方法

    }

    public interface Handle{        //接口定义

        public void handle(String s);

    };

public void setHandle(Handle handle)

{

    this.handle=handle;

}

}

　　Activity：

import androidx.appcompat.app.AppCompatActivity;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.os.Bundle;

import android.os.IBinder;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements MyBroadcastReceiver.Handle {

private Button broad=null;

private MyBroadcastReceiver receiver;//定义广播接收器对象

private ServiceConnection serviceConnection =new ServiceConnection() {

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        broad=(Button)super.findViewById(R.id.broad);

        receiver=new MyBroadcastReceiver();

        IntentFilter intentFilter = new IntentFilter();

        intentFilter.addAction("android.intent.action.EDIT");

        registerReceiver(receiver,intentFilter);//动态注册

        receiver.setHandle(this);

}

    broad.setOnClickListener(new View.OnClickListener() {

        @Override

        public void onClick(View v) {

            Intent it=new Intent();

            it.setAction("android.intent.action.EDIT");

            it.putExtra("msg","广播已接收");

            MainActivity.this.sendBroadcast(it);

        }

    });

    }

    @Override

//实现接口中的方法

    public void handle(String s) {

        Toast.makeText(this,s,Toast.LENGTH_SHORT).show();

    }

    protected void onDestroy() {

                super.onDestroy();

                unregisterReceiver(receiver);     //注销广播接收器

            }

 }

注意一点就是这里要使用动态注册，不能用静态注册，因此不需要去配置AndroidMainifest.xml文件