廣播service 和activity 之間的通訊

文章目錄

• 廣播service 和activity 之間的通訊
• 靜態註冊
• 動態註冊

在avtivity 裡面建立內部的廣播接收者 broadcastReceive
動態註冊的時候一定要先註冊
注意在靜態註冊的時候因為是內部類，所以內部類在宣告時一定要寫成靜態內部類 （加上static））

靜態註冊

private WiFiConnectChangedReceiver wifiReceiver;
private void registerWiFiConnectReceiver(){
    IntentFilter filter = new IntentFilter();
    filter.addAction("com.test");//只接受這個廣播
    if (wifiReceiver == null) {
        wifiReceiver = new WiFiConnectChangedReceiver();
    }
    registerReceiver(wifiReceiver, filter);
}
public static class WiFiConnectChangedReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub

        if (intent.getAction().equals("com.test")) {
            Log.e("ceshi","接收到");
        }
    }
}


 

動態註冊

private Context mContext;
private MyRefreshReceiver refreshListReceiver;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mContext=this;
    IntentFilter intentFilter=new IntentFilter();
    intentFilter.addAction("com.test2");
    refreshListReceiver=new MyRefreshReceiver();
    this.registerReceiver(refreshListReceiver,intentFilter);
}


public   class MyRefreshReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.i("資料","沒有");
        Toast.makeText(context,"收到動態註冊",Toast.LENGTH_LONG).show();
    }
}