android 抛出异常,android - android Build.GetSerial（）抛出异常 - 堆栈内存溢出
您應(yīng)該面臨權(quán)限問題。 而且由于Android Marshmallow，您需要向用戶詢問權(quán)限。 除了在android清單文件中添加權(quán)限外，您還可以添加運(yùn)行時(shí)權(quán)限，如下所示：
static readonly int REQUEST_PHONE_STATE = 1;
public void checkPermission()
{
Log.Info(TAG, "Checking permission.");
// Check if the permission is already available.
if (ActivityCompat.CheckSelfPermission(this, Manifest.Permission.ReadPhoneState) != (int)Permission.Granted)
{
// permission has not been granted
RequestPhoneStatePermission();
}
else
{
// permissions is already available, show the camera preview.
Log.Info(TAG, " permission has already been granted.");
getInfo();
}
}
方法RequestPhoneStatePermission
private void RequestPhoneStatePermission()
{
Log.Info(TAG, "PhoneState permission has NOT been granted. Requesting permission.");
if (ActivityCompat.ShouldShowRequestPermissionRationale(this, Manifest.Permission.ReadPhoneState))
{
Log.Info(TAG, "Displaying PhoneState permission rationale to provide additional context.");
Snackbar.Make(layout, Resource.String.permission_phonestate_rationale,
Snackbar.LengthIndefinite).SetAction(Resource.String.ok, new Action(delegate (View obj) {
ActivityCompat.RequestPermissions(this, new String[] { Manifest.Permission.ReadPhoneState }, REQUEST_PHONE_STATE);
})).Show();
}
else
{
// PhoneState permission has not been granted yet. Request it directly.
ActivityCompat.RequestPermissions(this, new String[] { Manifest.Permission.ReadPhoneState }, REQUEST_PHONE_STATE);
}
}
方法OnRequestPermissionsResult
public override void OnRequestPermissionsResult(int requestCode, string[] permissions, Permission[] grantResults)
{
if (requestCode == REQUEST_PHONE_STATE)
{
// Received permission result for camera permission.
Log.Info(TAG, "Received response for phone state permission request.");
// Check if the only required permission has been granted
if (grantResults.Length == 1 && grantResults[0] == Permission.Granted)
{
// Camera permission has been granted, preview can be displayed
Log.Info(TAG, "phonestate permission has now been granted. Showing preview.");
Snackbar.Make(layout, Resource.String.permission_available_phonestate, Snackbar.LengthShort).Show();
getInfo();
}
else
{
Log.Info(TAG, "phonestate permission was NOT granted.");
Snackbar.Make(layout, Resource.String.permissions_not_granted, Snackbar.LengthShort).Show();
}
}
else
{
base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
方法getInfo
private void getInfo() {
string serial;
if (Build.VERSION.SdkInt >= BuildVersionCodes.O)
{
serial = Build.GetSerial();
}
else
{
serial = Build.Serial;
}
Log.Info(TAG, "serial = " + serial);
}
這是完整的演示，您可以檢查一下。
之后，您可以獲得效果：
總結(jié)
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