Android dialing number judgment

Add the call permission to androidmanifest

<Uses-Permission Android: Name = "android. Permission. call_phone"/>

Public class Boda extends activity {/* declares the name of the button and edittext objects */private button mbutton1; private edittext medittext1;/** called when the activity is first created. * // @ override public void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. main);/* use the findviewbyid constructor to construct the edittext and button objects */medittext1 = (edittext) findviewbyid (R. id. myedittext1); mbutton1 = (Button) findviewbyid (R. id. mybutton1);/* set the onclicklistener of the button object to listen to The onclick event */mbutton1.setonclicklistener (New button. onclicklistener () {@ override public void onclick (view v) {try {/* Get the user input string in edittext */string strinput = medittext1.gettext (). tostring (); If (isphonenumbervalid (strinput) = true) {/* construct a new intent to run the action. the constant of call and the use of URI to bring the string into */intent myintentdial = new intent ("android. inte NT. action. call ", Uri. parse ("Tel:" + strinput);/* Add a custom intent object to the startactivity () method to run the call */startactivity (myintentdial ); medittext1.settext ("");} else {medittext1.settext (""); toast. maketext (BODA. this, "The entered phone format does not match", toast. length_long ). show () ;}} catch (exception e) {e. printstacktrace () ;}}) ;}/ * check whether the string is a telephone number and return the true or false value */public static Boolean isphonenumbervalid (string phone Number) {Boolean isvalid = false;/* acceptable phone numbers: * ^ \\(?: You can start with "(" * (\ D {3}): followed by three numbers *\\)?: You can use ")" to connect * [-]?: After the preceding format, you can select "-". * (\ D {4}): followed by three numbers * [-]?: You can choose "-" to connect the device. * (\ D {4}) $: ends with four digits. * The following numeric formats can be compared: * (123) 456-78900,123-4560-7890,123 45678900, (123)-4560-7890 */string expression = "^ \\(? (\ D {3 })\\)? [-]? (\ D {3}) [-]? (\ D {5}) $ "; string expression2 =" ^ \\(? (\ D {3 })\\)? [-]? (\ D {4}) [-]? (\ D {4}) $ "; charsequence inputstr = phonenumber;/* create pattern */pattern = pattern. compile (expression);/* pass pattern as a parameter to matcher for regular expression */matcher = pattern. matcher (inputstr);/* Create pattern2 */pattern pattern2 = pattern. compile (expression2);/* pass pattern2 as a parameter to matcher2 for regular expression */matcher matcher2 = pattern2.matcher (inputstr); If (matcher. matches () | matcher2.matches () {isvalid = true;} return isvalid ;}}

Go to the dialing page

Myimagebutton = (imagebutton) findviewbyid (R. id. myimagebutton); myimagebutton. setonclicklistener (New imagebutton. onclicklistener () {@ override public void onclick (view v) {/* Call dialing screen */intent myintentdial = new intent ("android. intent. action. call_button "); startactivity (myintentdial );}});