如何查找手机通话与否Android平板电脑的支持？ [英] How to find android tablet support for phone calling or not?

问题描述

我正在开发两个手机的Andr​​oid应用程序，并tablets.There是tablets.Some药片有打电话来的电话号码function.Here我应该知道这片包含手机通话功能和不具有该功能的问题。请咨询我如何找到它的平板电脑并不支持电话呼叫功能，其中之一。

I am developing an android application for both phone's and tablets.There is a problem with tablets.Some tablets are having calling to phone number function.Here i should know which tablets contains phone calling function and which don't have that function.Please advice me how to find which tablet have phone calling function and which one not supported.

在此先感谢

推荐答案

您可以使用此代码片段，以确定设备是否具有电话功能：

You can use this snippet to determine whether or not the device has the Telephony feature:

if (getPackageManager().hasSystemFeature(PackageManager.FEATURE_TELEPHONY)) {
    // You can make calls
} else {
    // You can't make calls
}

除此之外，如果你只是想确保你的应用程序没有任何设备上没有安装拨打电话的功能，添加以下到你的清单：

Beyond that, if you simply want to make sure that your app isn't installed on any device without the ability to make calls, add the following to your manifest:

<uses-feature
    android:required="true"
    android:name="android.hardware.telephony" />

请记住 android.hardware.telephony 是一把伞的功能，有些药片可以实现它的子部分，如 android.hardware。 telephony.cdma 或 android.hardware.telephony.gsm

Please remember that android.hardware.telephony is an umbrella feature, and some tablets may implement sub parts of it, like android.hardware.telephony.cdma or android.hardware.telephony.gsm

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