Question

我试图找到我的IMEI没有，但无法从我的设备到达这里是代码。我已经在我的Android清单提供了我的perssion但我仍然找不到。任何帮助将不胜感激。

Context context;
TextView imei_number;
Button get_imei;
String IMEI_Number_Holder;
TelephonyManager telephonyManager;



   @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        int permissionCheck = ContextCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE);
        imei_number = (TextView) findViewById(R.id.textView1);
        get_imei = (Button) findViewById(R.id.button1);
        if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_PHONE_STATE}, 0);
        } else {
            //TODO
        }
        telephonyManager = (TelephonyManager) this.getSystemService(Context.TELEPHONY_SERVICE);
        get_imei.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                if (ActivityCompat.checkSelfPermission(context, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
                    ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.READ_PHONE_STATE},1);
                    IMEI_Number_Holder = telephonyManager.getDeviceId();
                    // TODO: Consider calling
                    //    ActivityCompat#requestPermissions
                    // here to request the missing permissions, and then overriding
                    //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
                    //                                          int[] grantResults)
                    // to handle the case where the user grants the permission. See the documentation
                    // for ActivityCompat#requestPermissions for more details.
                    return;
                }


                imei_number.setText(IMEI_Number_Holder);
            }
        });

    }

}

我尝试了很多方法，但无法得到请帮助我。这是另一个代码，我尝试过这段代码但得到的错误就像

引起：java.lang.SecurityException：getDeviceId：用户10183和当前进程都没有android.permission.READ_PHONE_STATE。

我应该怎么做请指导我在谷歌尝试了很多方法，但帮助不大。我的设备是OS是Nougat

TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
    // TODO: Consider calling
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
        String imeiNumber1 = tm.getDeviceId(1); //(API level 23)
        String imeiNumber2 = tm.getDeviceId(2);

    }

    //    ActivityCompat#requestPermissions
    // here to request the missing permissions, and then overriding
    //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
    //                                          int[] grantResults)
    // to handle the case where the user grants the permission. See the documentation
    // for ActivityCompat#requestPermissions for more details.
    return;
}

Answer 1

我已更新您的onClick方法：

get_imei.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {

        if (ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_PHONE_STATE}, READ_PHONE_STATE_REQUEST);

        } else {

            IMEI_Number_Holder = telephonyManager.getDeviceId();
            imei_number.setText(IMEI_Number_Holder);
        }
    }
});

问题在于您的行动顺序。系统会检查您permission != PackageManager.PERMISSION_GRANTED是否意味着未授予，而是在调用getDeviceId()之后。

我无法从我的设备获取IMEI我的API级别为24且操作系统是牛轧糖

1 个答案: