Question

我编译了 libdispatch 。这段代码正在运行：

String SENT = "sent";
String DELIVERED = "delivered";

Intent sentIntent = new Intent(SENT);
/*Create Pending Intents*/
PendingIntent sentPI = PendingIntent.getBroadcast(
        getApplicationContext(), 0, sentIntent,
        PendingIntent.FLAG_UPDATE_CURRENT);

Intent deliveryIntent = new Intent(DELIVERED);

PendingIntent deliverPI = PendingIntent.getBroadcast(
        getApplicationContext(), 0, deliveryIntent,
        PendingIntent.FLAG_UPDATE_CURRENT);
/* Register for SMS send action */
registerReceiver(new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        String result = "";

        switch (getResultCode()) {

            case Activity.RESULT_OK:
                result = "Transmission successful";
                break;
            case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                result = "Transmission failed";
                break;
            case SmsManager.RESULT_ERROR_RADIO_OFF:
                result = "Radio off";
                break;
            case SmsManager.RESULT_ERROR_NULL_PDU:
                result = "No PDU defined";
                break;
            case SmsManager.RESULT_ERROR_NO_SERVICE:
                result = "No service";
                break;
        }

        Toast.makeText(getApplicationContext(), result,
                Toast.LENGTH_LONG).show();
    }

}, new IntentFilter(SENT));
/* Register for Delivery event */
registerReceiver(new BroadcastReceiver() {

    @Override
    public void onReceive(Context context, Intent intent) {
        Toast.makeText(getApplicationContext(), "Deliverd",
                Toast.LENGTH_LONG).show();
    }

}, new IntentFilter(DELIVERED));

/*Send SMS*/
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phoneNo, null, msg, sentPI,
        deliverPI);
Toast.makeText(getApplicationContext(),
        ex.getMessage().toString(), Toast.LENGTH_LONG)
        .show();
ex.printStackTrace();

但是如果我把这段代码放到结束文件中：

import Dispatch
var lockQueue = dispatch_queue_create("com.test.async", nil);

我收到了一个错误：

使用未解析的标识符＆＃39; dispatch_async＆＃39;

Answer 1

正如我上面评论的那样，这似乎是a current limitation with the Swift Package Manager。它目前不支持添加适当的编译时选项，例如支持块作为GCD函数（-Xcc -fblocks）的输入所需的选项。

与此同时，您可以避免使用Swift Package Manager并使用swiftc直接编译文件，并使用适当的选项。谢弗勒在their test repository中提供了一个例子：

swiftc -v -o gcd4 Sources/main.swift -I .build/debug -j8 -Onone -g -Xcc -fblocks -Xcc -F-module-map=Packages/CDispatch-1.0.0/module.modulemap -I Packages/CDispatch-1.0.0 -I /usr/local/include

-I选项将为libdispatch提供模块映射，因此请调整它们以匹配实际放置这些系统模块目录的位置。

Linux中的Swift：使用未解析的标识符＆＃39; dispatch_async＆＃39;

1 个答案: