Android phone call Program Implementation

 

Today, we use Android to write a small program that enables calls. First, create an Android project Phone and modify the String. xml in Values in Layout. The Code is as follows:

<? Xml version = "1.0" encoding = "UTF-8"?>

<Resources>

<String name = "hello"> Hello World, PhoneActivity! </String>

<String name = "app_name"> Phone </string>

 

<String name = "input_into"> enter the number you want to call. </string>

<String name = "dial_caption"> call </string>

</Resources>

Then add several attributes to main. xml. The Code is as follows: www.2cto.com

<TextView

Android: layout_width = "fill_parent"

Android: layout_height = "wrap_content"

Android: text = "@ string/input_into"/>

<EditText

Android: layout_width = "fill_parent"

Android: layout_height = "wrap_content"

Android: id = "@ + id/phone_number"/>

<Button

Android: layout_width = "fill_parent"

Android: layout_height = "wrap_content"

Android: text = "@ string/dial_caption"

Android: id = "@ + id/dial_btn"/> t

Layout is the layout. After modifying the code of Main. xml, the following results will be displayed:

 

The following code is automatically generated in R. Java:

Public static final class drawable {

Public static final int ic_launcher = 0x7f020000;

}

Public static final class id {

Public static final int dial_btn = 0x7f050001;

Public static final int phone_number = 0x7f050000;

}

Public static final class string {

Public static final int app_name = 0x7f040001;

Public static final int dial_caption = 0x7f040003;

Public static final int hello = 0x7f040000;

Public static final int input_into = 0x7f040002;

}

The following code is available in the PhoneActivity. java file:

Package cn. class3g. activity;

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;

Public class PhoneActivity extends Activity {

 

EditText numberEt;

Button dialBtn;

 

@ Override

Public void onCreate (Bundle savedInstanceState ){

Super. onCreate (savedInstanceState );

SetContentView (R. layout. main );

FindViews ();

DialBtn. setOnClickListener (myListener );

}

 

Public void findViews (){

NumberEt = (EditText) this. findViewById (R. id. phone_number );

DialBtn = (Button) this. findViewById (R. id. dial_btn );

}

 

Private OnClickListener myListener = new Button. OnClickListener (){

Public void onClick (View v ){

String phone_number = numberEt. getText (). toString ();

Phone_number = phone_number.trim ();

If (phone_number! = Null &&! Phone_number.equals ("")){

Intent intent = new Intent (Intent. ACTION_CALL, Uri. parse ("tel:" + phone_number ));

PhoneActivity. this. startActivity (intent );

}

}

};

}

In AndroidManifest. xml, add:

<Uses-sdk android: minSdkVersion = "10"/>

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

Save, the program like a phone call is finished, open the mobile phone, and right-click the project name, select Run As...-> Android Application to Run, you can call.

Note: The program needs to start two virtual phones to implement mutual dialing.

The effect after running is as follows:

 

From column LLLAZY520