在Android中启动SMS意图的防错方法 [英] Error-proof way of starting SMS intent in Android

问题描述

在我的Android应用程序中，我使用以下代码启动消息传递应用程序并填写短信的默认文本:

In my Android application, I use the following code to start the messaging app and fill in a default text for a text message:

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("sms:"+USERS_PHONE_NUMBER));
intent.putExtra("sms_body", "DUMMY TEXT");
startActivity(intent);

这在大多数情况下都有效.但不幸的是，在某些设备上，我收到以下错误消息:

This works in most cases. But unfortunately, on some devices I get the following error message:

android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=sms:+XXXXXXXXXX (has extras) }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1510)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1384)
at android.app.Activity.startActivityForResult(Activity.java:3131)
at android.app.Activity.startActivity(Activity.java:3237)

很明显，我创建的意图无法得到处理.

Obviously, the intent that I created cannot be handled.

• 我的短信意图代码是否有错误?
• 如果无法处理意图，如何防止应用程序崩溃?

• Is there any mistake in my SMS intent code?
• How can I prevent the application from crashing if the intent cannot be handled?

我应该使用PackageManager.queryIntentActivities()还是解决该问题的另一种方法?

Should I use PackageManager.queryIntentActivities() or is there another way of solving this problem?

提前谢谢！

推荐答案

我没有专门尝试过此意图，但是最简单的方法可能是添加try and catch块

I haven't tried this intent specifically, but the simplest way will probably be to add try and catch block

try {
    startActivity(intent);
} catch (ActivityNotFoundException e) {
    // Display some sort of error message here.
}

由于您不能依靠特定的Android设备来安装Messaging应用程序(例如，某些平板电脑没有电话服务)，因此您必须做好准备.

Since you can't count on the specific Android device to have the Messaging app (some tablets for example don't have telephony services), you have to be ready.

通常，当您开始进行外部活动时，这是一个好习惯，以避免应用程序崩溃.

It is a good practice in general when you're starting external activities, to avoid crashes in your app.

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