如何检测设备是否能够通话和发短信

Question

一些设备即。 Galaxy Tablet 10.1 只能发送短信，但不能打电话。其他一些设备（例如 Asus Transformer）甚至没有 SIM 卡。

如何检测设备是否可以拨打电话？如何检测设备是否可以发送短信？

Answer 1

使用这种技术，您也可以测试各种东西，例如指南针，位置是否可用

    PackageManager pm = getBaseContext().getPackageManager();
    pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY);

Answer 2

也许您可以查询PackageManager 系统是否包含任何可以响应 ACTION_CALL 和 ACTION_SENDTO 意图的组件？您可能需要在 URI 中添加“tel:”和“smsto:”方案。

Answer 3

应该这样做：

 PackageManager pm = this.getPackageManager();

 if (pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY)) {
     System.out.println("horray");
 } else {
     System.out.println("nope");
 }

Answer 4

您可以使用以下方法检查是否支持短信功能：

private void sendSms(String theNumber, String theMsg) {
        // TODO Auto-generated method stub
        String SENT = "Message Sent";
        String DELIVERED = "Message Delivered";

        PendingIntent sentPI = PendingIntent.getBroadcast(getApplicationContext(), 0, new Intent(SENT), 0);
        PendingIntent deliveredPI = PendingIntent.getBroadcast(getApplicationContext(), 0, new Intent(DELIVERED), 0);

        registerReceiver(new BroadcastReceiver() {

            @Override
            public void onReceive(Context context, Intent intent) {
                // TODO Auto-generated method stub
                switch(getResultCode()){
                case Activity.RESULT_OK:   Toast.makeText(getApplicationContext(), "Message Sent", Toast.LENGTH_SHORT).show();
                                            break;
                case Activity.RESULT_CANCELED: Toast.makeText(getApplicationContext(), "Message Not Sent", Toast.LENGTH_SHORT).show();
                                                break;
                case SmsManager.RESULT_ERROR_NO_SERVICE:  Toast.makeText(getApplicationContext(), "No Service Available", Toast.LENGTH_SHORT).show();
                                                           break;
                }
            }
        }, new IntentFilter(SENT));

        registerReceiver(new BroadcastReceiver() {

            @Override
            public void onReceive(Context context, Intent intent) {
                // TODO Auto-generated method stub
                switch(getResultCode()){
                case Activity.RESULT_OK:   Toast.makeText(getApplicationContext(), "Message Delivered", Toast.LENGTH_SHORT).show();
                                            break;
                case Activity.RESULT_CANCELED: Toast.makeText(getApplicationContext(), "Message Not Delivered", Toast.LENGTH_SHORT).show();
                                                break;

                }
            }
        }, new IntentFilter(DELIVERED));


        SmsManager sms = SmsManager.getDefault();
        sms.sendTextMessage(theNumber, null, theMsg, sentPI, deliveredPI);
    }

Answer 5

您可以将代码包装在 try/catch 中。它适用于所有情况，即使最后一次关于短信发送的 api 更改也是如此。

try{
    // code that use telephony features
}
catch(Exception e){
    // code that doesn't use telephony features
}

Answer 6

这是我检查短信是否可用的方法。

public boolean isAvailable(Context context, Intent intent) {
    final PackageManager mgr = context.getPackageManager();
    List<ResolveInfo> list = mgr.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
    return list.size() > 0;
}

取自 developer.android.com。

并创建一个 Intent 来检查，如下所示：

Uri smsToUri = Uri.parse("smsto:");
Intent intent = new Intent(Intent.ACTION_SENDTO, smsToUri);
if (isAvailable(intent)) {
    // do whatever you like.
}