Android dial Phone Function Example detailed _android

An example of this article is an analysis of the Android dial phone function. Share to everyone for your reference, specific as follows:

The phone is one of the most basic features of mobile phones, and now Android smartphones are very popular, with a variety of wonderful phone features, but how does the Android phone achieve the basic function of calling? Examples are presented below. First, the program:

Import Java.util.regex.Matcher;
Import Java.util.regex.Pattern;
Import android.app.Activity;
Import android.content.Intent;
Import Android.net.Uri;
Import Android.os.Bundle;
Import Android.view.View;
Import Android.view.View.OnClickListener;
Import Android.widget.Button;
Import Android.widget.EditText;
Import Android.widget.Toast;
 public class A01activity extends activity {private Button B;
  Private EditText et; /** called the activity is a.
    * * @Override public void onCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
    Setcontentview (R.layout.main);
    b= (Button) Findviewbyid (R.id.button);
    et= (EditText) Findviewbyid (r.id.et); B.setonclicklistener (New Onclicklistener () {@Override public void OnClick (View v) {//TODO auto-generated Method St
    UB String S=et.gettext (). toString ();
     if (Isphonenumbervalid (s) ==true) {Intent i=new Intent ("Android.intent.action.CALL", Uri.parse ("Tel:" +s));
     StartActivity (i); ET.settext ("");
     } else{Et.settext (""); Toast.maketext (A01activity.this, "The phone number you entered is malformed, please re-enter!")
    ", Toast.length_long). Show ();
  }
  }
    }); The//Method Isphonenumbervalid (String phonenumber) is used to determine whether the phone number is in the correct format public static Boolean Isphonenumbervalid (String phonenumb ER) {boolean isvalid=false;/** * The following string is used to specify the phone format as follows: * ^\\ (?) indicates that it can be used (as the opening * (\\d{3}) to indicate that immediately after 3 digits * \)? to continue * [-]? The stated format can be used with selective "-" continuation * (\\d{4}) to denote the following 4 digits * [-]? Indicates that the available selective "-" continuation * (\\d{4}) $ representation ends with 4 digits * can be compared to the following number format: * (123) 456-78900 123-4567-8900 12345678900 (123) -456-78900*/St Ring expression01= "^\\ ( \\D{3}) \)? [- ]? (\\d{4}) [- ]?
   (\\d{4}) $ "; String expression02= "^\\ ( \\D{3}) \)? [- ]? (\\d{3}) [- ]?
   (\\d{5}) $ "; Pattern P01=pattern.compile (EXPRESSION01);//To pass the phone format to the Matcher M01=p01.matcher (PhoneNumber)
   Check the format of the phone number correctly pattern P02=pattern.compile (EXPRESSION02);
   Matcher M02=p02.matcher (PhoneNumber); if (m01.matches () | |
   M02.matches ()) {isvalid=true;
  return isValid;
}}

 

Res/layout/main.xml is as follows:

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android=
"http://schemas.android.com/apk/" Res/android "
  android:layout_width=" fill_parent "
  android:layout_height=" fill_parent "
  android:o" rientation= "vertical" >
  <textview
    android:layout_width= "Fill_parent"
    Wrap_content "
    android:text=" @string/hello/>
  <button android:id=
    "@+id/button"
    android: Layout_width= "Fill_parent"
    android:layout_height= "wrap_content"
    />
  <edittext
    android : id= "@+id/et"
    android:layout_width= "fill_parent" android:layout_height= "wrap_content
    "
    />
</LinearLayout>

Androidmanifest.xml is as follows:

<?xml version= "1.0" encoding= "Utf-8"?> <manifest xmlns:android=
"http://schemas.android.com/apk/res/" Android "
  package=" com.my.a01 "
  android:versioncode=" 1 "
  android:versionname=" 1.0 ">
  < USES-SDK android:minsdkversion= "Ten"/>
  <application
    android:icon= "@drawable/ic_launcher"
    Android:label= "@string/app_name" >
    <activity
      android:name= ". A01activity "
      android:label=" @string/app_name ">
      <intent-filter>
        <action android:name= "Android.intent.action.MAIN"/>
        <category android:name= "Android.intent.category.LAUNCHER"/>
      </intent-filter>
    </activity>
  </application>
  <uses-permission android:name= " Android.permission.CALL_PHONE ">
  </uses-permission>
</manifest>

Through the button to make the call, in the OnClick () method, customize a intent, incoming Action_call and Uri.parse (), the incoming URI data in the prefix of the phone is "tel:".

Note To add the right to call Android.permission.CALL_PHONE

You can use the Android.Action.Dialer method Android.intent.action.DIAL to invoke the virtual keyboard to dial the phone.

There is a simpler way to verify that the phone number format you entered is correct: in a EditText object in Main.xml, add

Android:phonenumber= "true"

You can restrict the data entered must be a numeric symbol.

For more information on Android-related content readers can view the site topics: "Android Resource Operation tips Summary", "Android Development introduction and Advanced Course", "Android Control Usage Summary", "Android SMS and telephone operating skills summary" and " Android Multimedia How-to Summary (audio, video, recording, etc.)

I hope this article will help you with the Android program.