使用TelephonyManager从Android版本6.0获得手机号码，它与最低版本一起工作

Question

我想在Android Studio中使用TelephonyManager从设备获取手机号码，我可以在4.0版本中获得手机号码，但是当我测试版本时应用程序崩溃6.0

Answer 1

您应该检查用户是否已授予TelephonyManager 6.0版权限。您可以查看详细信息link

下面的代码检查，如果有必要的应用程序有权读取用户的联系人，并请求权限：

// Here, thisActivity is the current activity 
if (ContextCompat.checkSelfPermission(thisActivity, 
      Manifest.permission.READ_CONTACTS) 
    != PackageManager.PERMISSION_GRANTED) { 

// Should we show an explanation? 
if (ActivityCompat.shouldShowRequestPermissionRationale(thisActivity, 
     Manifest.permission.READ_CONTACTS)) { 

    // Show an expanation to the user *asynchronously* -- don't block 
    // this thread waiting for the user's response! After the user 
    // sees the explanation, try again to request the permission. 

} else { 

    // No explanation needed, we can request the permission. 

    ActivityCompat.requestPermissions(thisActivity, 
      new String[]{Manifest.permission.READ_CONTACTS}, 
      MY_PERMISSIONS_REQUEST_READ_CONTACTS); 

    // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an 
    // app-defined int constant. The callback method gets the 
    // result of the request. 
} 

}