Android广播实现进程间通信，很简单

应用A发送广播：

public class MainActivity extends AppCompatActivity {
    
    

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }


    public void sendBro(View view) {
    
    
        Intent intent = new Intent("广播A");
        intent.putExtra("name","小明");
        sendBroadcast(intent);
    }
}

应用B接收广播：

public class MainActivity extends AppCompatActivity {
    
    

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    
    
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final IntentFilter filter = new IntentFilter();
        filter.addAction("广播A");
        BroadcastReceiver mAReceiver = new BroadcastReceiver() {
    
    
            @Override
            public void onReceive(final Context context, final Intent intent) {
    
    
                String action = intent.getAction();
                String msg = intent.getStringExtra("name");
                Log.d("xxx", "应用B收到：" + action + ",name:" + msg);
            }
        };
        registerReceiver(mAReceiver, filter);
    }
}

应用A、B 都安装，发送两个广播，看看log:

就是这么简单!