android - 测试我的设备是否可以在 Android 上被发现

Question

我想在发送提示用户打开它的意图之前测试我的 android 设备是否可被发现，我该怎么办？

意图如下：

Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 30);
startActivityForResult(intent, idBlueToothDiscoveryRequest);

Answer 1

我发现：

if(mBluetoothAdapter.getScanMode() != BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE)
{
    Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
    intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 30);
    startActivityForResult(intent, idBlueToothDiscoveryRequest);
}