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我想在设置首选项时听nfc启用/禁用,所以我在我的活动中添加以下代码
IntentFilter filter = new IntentFilter("android.nfc.action.ADAPTER_STATE_CHANGE");
BroadcastReceiver receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
tv.setText("broadcast received :" + NfcAdapter.getDefaultAdapter(MainActivity.this).isEnabled());
Toast.makeText(MainActivity.this, "broadcast received", Toast.LENGTH_LONG).show();
}
};
registerReceiver(receiver, filter);
但它看起来像ADAPTER_STATE_CHANGE不起作用.
任何人都有想法听取nfc的状态吗？请帮忙..！！
最佳答案
此Intent的名称是“android.nfc.action.ADAPTER_STATE_CHANGED”,而不是“android.nfc.action.ADAPTER_STATE_CHANGE”.注意D在CHANGED上.
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转载注明原文：android nfc设置切换监听器 - 乐贴网
