Android动态广播

Posted 2022-12-12 源于未知

DynamicActivity [发送方]

final public static String ACTION = "DynamicActivity";

    private void send()
        Intent intent = new Intent(ACTION);
        intent.putExtra("content", "发送广播，相当于在这里传送数据");
        sendBroadcast(intent);
    

MainActivity [ 接收方(可以是多个)]

    //注册广播
    public void registerReceiver() 
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(DynamicActivity.ACTION);
        registerReceiver(receiver, intentFilter);
    

    //Activity销毁时 解绑接收器
    @Override
    protected void onDestroy() 
        super.onDestroy();
        unregisterReceiver(receiver);
    

    //接收器
    public BroadcastReceiver receiver = new BroadcastReceiver() 
        @Override
        public void onReceive(Context context, Intent intent) 
            String action = intent.getAction();
            if (action.equals(DynamicActivity.ACTION)) 
                tvContent.setText(intent.getStringExtra("content"));
                ToastUtil.show(intent.getStringExtra("content"));
            
        
    ;