Android app Simple Phone Dialer

Implementation steps:

1. Drawing the UI

You can use drag-and-drop and text editing.

2. Write business logic according to UI in OnCreate in Mainactivity

Get EditText Contentet_number = (editText) Findviewbyid (R.ID.EDITTEXT1);//find zhe Buttonbutton btn_call = (Button) Findviewbyid (R.id.button);    

3. Set a click event inner class for the button

New　　MyListener ()); in//oncreate

  Private classMyListenerImplementsview.onclicklistener{ Public voidOnClick (View v) {String number=Et_number.gettext (). toString (). Trim (); if("". Equals (number)) {Toast.maketext (mainactivity). This, "Please enter the number you want to dial", Toast.length_short). Show (); return; } Intent Intent=NewIntent ();            Intent.setaction (Intent.action_call); Intent.setdata (Uri.parse ("Tel:" +Number ));        StartActivity (Intent); }    }

4. Set a click event Hide class for the button

Btn_call.setonclicklistener (NewView.onclicklistener () {@Override Public voidOnClick (View v) {String number=Et_number.gettext (). toString (). Trim (); if("". Equals (number)) {Toast.maketext (mainactivity). This, "Please enter the number you want to dial", Toast.length_short). Show (); return; } Intent Intent=NewIntent ();                Intent.setaction (Intent.action_call); Intent.setdata (Uri.parse ("Tel:" +Number ));            StartActivity (Intent); }        });

5. Set a click event for the button to implement the interface type in the current class

6. Set a click event for the button

7. Plus the right to call

<uses-permission android:name= "Android.permission.CALL_PHONE"/>

End

Android app Simple Phone Dialer