我米非常新的Andr​​oid开发。 我想找到手机并使用的IMEI号android.telephony.TelephonyManager;

I m very new to Android Development. I want to find the IMEI number of the phone and using "android.telephony.TelephonyManager;".

TelephonyManager telephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
telephonyManager.getDeviceId();

现在的编译器说。 背景不能被解析为一个变量。 任何人能帮助我吗？什么步骤我米失踪 我也包括在XML的用户权限。

Now the compiler says. Context cannot be resolved to a variable. Any one can help me ? What step I m missing I have also included user permission in XML.

推荐答案

确认你的进口，你应该导入： android.content.Context ，

Verify your Imports , you should import : android.content.Context ,

然后用这个code：

TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
// get IMEI
String imei = tm.getDeviceId();
//get The Phone Number
String phone = tm.getLine1Number();

或者直接：用这样的：

Or directly : use this :

TelephonyManager tm = (TelephonyManager) getSystemService(android.content.Context.TELEPHONY_SERVICE);

编辑： *的你应该通过上下文到新类的构造函数：的*

public class YourClass {
    private Context context;

    //the constructor 
    public YourClass( Context _context){

        this.context = _context;
        //other initialisations .....

    }

   //here is your method to get the IMEI Number by using the Context that you passed to your class
   public String getIMEINumber(){
       //...... place your code here 
   }

}

而在你的活动，实例化类和上下文传递给它这样的：

And in your Activity , instanciate your class and pass the context to it like this :

YourClass instance = new YourClass(this);
String IMEI = instance.getIMEINumber();