Question

我想以编程方式获取Android Studio中的电话号码。我试过这个:(并且它导致崩溃）

TelephonyManager tMgr =          
      (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE); 


String mPhoneNumber = tMgr.getLine1Number();

有什么问题？获取电话号码的其他任何方式？

Answer 1

我认为你需要<uses-permission android:name="android.permission.READ_PHONE_STATE"/>

private String getMyPhoneNO() {
    TelephonyManager tMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
    String mPhoneNumber = tMgr.getLine1Number();
    return mPhoneNumber;
}

与

    if (ContextCompat.checkSelfPermission(this,
        Manifest.permission.READ_PHONE_STATE)
                != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this,
                new String[]{Manifest.permission.READ_PHONE_STATE},
                MY_PERMISSIONS_REQUEST_READ_PHONE_STATE);
    } else {
        String phoneNumber = getMyPhoneNO();
    }

在Activity / Fragment中

@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
    if (requestCode == MY_PERMISSIONS_REQUEST_READ_PHONE_STATE) {
        if (grantResults.length > 0
                && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            String phoneNumber = getMyPhoneNO();
        }
    }
}

Answer 2

您需要添加 <uses-permission android:name="android.permission.READ_PHONE_STATE" /> 为新的Android版本显示+请求运行时权限。 https://developer.android.com/training/permissions/requesting.html

if (ContextCompat.checkSelfPermission(thisActivity,
    Manifest.permission.READ_PHONE_STATE)
            != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(thisActivity,
            new String[]{Manifest.permission.READ_PHONE_STATE},
            MY_PERMISSIONS_REQUEST_READ_PHONE_STATE);
}

否则你可以在stacktrace中看到解释错误。

如何以编程方式获取电话号码？

2 个答案: