广播的简单使用

最新推荐文章于 2025-08-20 18:34:09 发布

原创最新推荐文章于 2025-08-20 18:34:09 发布 · 305 阅读

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本文详细介绍了在Android中如何初始化并使用广播接收器（BroadcastReceiver）。从动态注册广播接收器到发送广播Intent，再到接收端如何处理接收到的广播信息进行UI刷新，提供了完整的示例代码。

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初始化：

 private CHS_Broad_FLASHUI_BroadcastReceiver CHS_Broad_Receiver;

 //动态注册CHS_Broad_BroadcastReceiver
 CHS_Broad_Receiver = new CHS_Broad_FLASHUI_BroadcastReceiver();
 IntentFilter CHS_Broad_filter=new IntentFilter();
 CHS_Broad_filter.addAction("android.intent.action.CHS_Broad_FLASHUI_BroadcastReceiver");
 //注册receiver
 registerReceiver(CHS_Broad_Receiver, CHS_Broad_filter);

发送端：

public static final String BoardCast_DialogSource="BoardCast_DialogSource";
Intent intentw = new Intent();
intentw.setAction("android.intent.action.CHS_Broad_FLASHUI_BroadcastReceiver");
intentw.putExtra("msg", Define.BoardCast_DialogSource);
mContext.sendBroadcast(intentw);

接收端：

 //用接收广播刷新UI TODO
    public class CHS_Broad_FLASHUI_BroadcastReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            String msg = intent.getExtras().get("msg").toString();
             if (msg.equals(Define.BoardCast_DialogSource)) {
                if(mHome != null){ mHome.flashinputsourceDialog(); }
            }
        }
    }