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我有两个活动,A 和 B。活动 A 用广播接收器捕获意图,活动 B 触发它。

活动代码 A:

final BroadcastReceiver mReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {

            String action = intent.getAction();         

            if(action.equals(floatyNetworkList.CONNECT_INTENT)){
                Log.v("com.vittorio", "intent catched");
                BluetoothDevice target = (BluetoothDevice) intent.getExtras().get("Device");
                Thread T = new Thread(new ConnectThread(target, mHandler, recmsgs, DDB, "Connecting"));
                T.start();
            }
..
..

在活动 AI 中,还使用以下代码注册接收器:

IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
filter.addAction(floatyNetworkList.CONNECT_INTENT);
registerReceiver(mReceiver, filter);

活动 B 的代码,当我从列表视图中选择一个项目时,我的意图被触发:

listBtview.setOnItemClickListener(new OnItemClickListener() {
    public void onItemClick(AdapterView<?> adapterBt, View myView, int myItemInt, long mylng) {

        @SuppressWarnings("unchecked")
        HashMap<String,String> selectedFromList =(HashMap<String,String>) (listBtview.getItemAtPosition(myItemInt));
        Toast.makeText(getBaseContext(), selectedFromList.get("Name"), Toast.LENGTH_LONG).show();

        Intent intent = new Intent(getApplicationContext(), Floaty.class);
        intent.setAction(CONNECT_INTENT);
        intent.putExtra("Device",fetchDevice(selectedFromList.get("Address")));
        getApplicationContext().sendBroadcast(intent);
      }                  
});

}

问题是活动 A 永远不会收到意图。我还为我的自定义意图添加了过滤器并正确更新了我的清单。

清单代码:

    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
        <action android:name="com.vittorio.intent.action.CONNECT_INTENT"/>
        <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>

有任何想法吗?

谢谢

4

1 回答 1

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像这样创建意图:

Intent intent = new Intent();
intent.setAction(CONNECT_INTENT);

或者

intent = new Intent(CONNECT_INTENT);

并且,是的,不要使用应用程序上下文,在这个站点上查看很多关于它的帖子

于 2013-05-07T17:54:04.323 回答