HaOx HaOx - 1 day ago 5
Android Question

Android Call an method from another class

I know that this Question is repeated but I can't find the answer in Internet.

I want to call a method from another class.

I've Class1 and Class2.

In Class 2 I've that method:

public void UpdateEmployee(){
//some code
}


I want to call that method from Class1.

Thanks for any answer.

----EDIT----

final Button btnUpdate = (Button)findViewById(R.id.btnUpd);
btnUpdate.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Employee updEmple = new Employee();
updEmple.UpdateEmployee();

}
});


----LogCat---

05-28 16:30:44.030: E/AndroidRuntime(25198): FATAL EXCEPTION: main
05-28 16:30:44.030: E/AndroidRuntime(25198): java.lang.NullPointerException: println needs a message
05-28 16:30:44.030: E/AndroidRuntime(25198): at android.util.Log.println_native(Native Method)
05-28 16:30:44.030: E/AndroidRuntime(25198): at android.util.Log.v(Log.java:116)
05-28 16:30:44.030: E/AndroidRuntime(25198): at and.net.Employee.UpdateEmployee(Employee.java:77)
05-28 16:30:44.030: E/AndroidRuntime(25198): at and.net.AndActivity$2.onClick(AndActivity.java:51)
05-28 16:30:44.030: E/AndroidRuntime(25198): at android.view.View.performClick(View.java:2485)
05-28 16:30:44.030: E/AndroidRuntime(25198): at android.view.View$PerformClick.run(View.java:9080)
05-28 16:30:44.030: E/AndroidRuntime(25198): at android.os.Handler.handleCallback(Handler.java:587)
05-28 16:30:44.030: E/AndroidRuntime(25198): at android.os.Handler.dispatchMessage(Handler.java:92)
05-28 16:30:44.030: E/AndroidRuntime(25198): at android.os.Looper.loop(Looper.java:123)
05-28 16:30:44.030: E/AndroidRuntime(25198): at android.app.ActivityThread.main(ActivityThread.java:3683)
05-28 16:30:44.030: E/AndroidRuntime(25198): at java.lang.reflect.Method.invokeNative(Native Method)
05-28 16:30:44.030: E/AndroidRuntime(25198): at java.lang.reflect.Method.invoke(Method.java:507)
05-28 16:30:44.030: E/AndroidRuntime(25198): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
05-28 16:30:44.030: E/AndroidRuntime(25198): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
05-28 16:30:44.030: E/AndroidRuntime(25198): at dalvik.system.NativeStart.main(Native Method)

Answer

You should use the following code :

Class2  cls2= new Class2();
cls2.UpdateEmployee();

In case you don't want to create a new instance to call the method, you can decalre the method as static and then you can just call Class2.UpdateEmployee();

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