Android mobile phone Call Development example

Source: Internet
Author: User

The most common function of a mobile phone is to call and send text messages, how do we make calls through the program in Android development? This article gives a simple example of making a phone call using an Android phone.

Here are the specific steps to develop this instance:

First, a new Android project, named Phonecalldemo.

Second, design the interface of the program, open main.xml to modify the content as follows:

xml/html Code
  1. <? XML version= "1.0" encoding="Utf-8"?>
  2.   <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.   android:orientation="Vertical"
  4.   Android:layout_width="Fill_parent"
  5.   android:layout_height="Fill_parent"
  6.   >
  7.   <TextView
  8.   Android:layout_width="Fill_parent"
  9.   android:layout_height="Wrap_content"
  10.   android:text="Please input the Phonenumer:"
  11.   />
  12.   <EditText
  13.   android:id="@+id/et1"
  14.   Android:layout_width="Fill_parent"
  15.   android:layout_height="Wrap_content"
  16.   android:phonenumber="true"
  17.   />
  18.   <Button
  19.   android:id="@+id/bt1"
  20.   Android:layout_width="Wrap_content"
  21.   android:layout_height="Wrap_content"
  22.   android:text="Call Phone"
  23.   />
  24.   </linearlayout>

Third, increase the access to call, open Androidmanifest.xml, modify the code as follows:

xml/html Code
  1.  <? XML version= "1.0" encoding="Utf-8"?>
  2.   <manifest xmlns:android="http://schemas.android.com/apk/res/android"
  3.   package="Com.android.test"
  4.   android:versioncode="1"
  5.   Android:versionname="1.0">
  6.   <application android:icon="@drawable/icon" android:label="@string/app_name">
  7.   <activity android:name=". Phonecalldemo "
  8.   Android:label="@string/app_name">
  9.   <intent-filter>
  10.   <action android:name="Android.intent.action.MAIN" />
  11.   <category android:name="Android.intent.category.LAUNCHER" />
  12.   </intent-filter>
  13.   </activity> </application>
  14.   <uses-sdk android:minsdkversion="3" />
  15.   <uses-permission android:name="Android.permission.CALL_PHONE">
  16.   </uses-permission>
  17.   </manifest>

Four, the main program Phonecalldemo.java code is as follows:

Java code
  1. Package com.android.test;   import android.app.Activity;
  2.   Import android.content.Intent;
  3.   Import Android.net.Uri;
  4.   Import Android.os.Bundle;
  5.   Import Android.view.View;
  6.   Import Android.widget.Button;
  7.   Import Android.widget.EditText;
  8.   Import Android.widget.Toast;
  9. public class Phonecalldemo extends Activity {
  10.   Private Button BT;
  11.   Private EditText et;
  12.   Public void OnCreate (Bundle savedinstancestate) {
  13.   Super.oncreate (savedinstancestate);
  14. Setcontentview (R.layout.main);
  15.   Access to resources
  16. BT = (Button) Findviewbyid (R.ID.BT1);
  17. ET = (EditText) Findviewbyid (R.ID.ET1);
  18.   Increase incident Response
  19. Bt.setonclicklistener (new Button.onclicklistener () { @Override
  20.   Public void OnClick (View v) {
  21.   Get the input phone string
  22. String inputstr = Et.gettext (). toString ();
  23.   If the input is not empty create a call intent
  24.   if (Inputstr.trim (). Length ()! =0)
  25. {
  26. Intent phoneintent = new Intent ("Android.intent.action.CALL",
  27. Uri.parse ("Tel:" + inputstr));
  28.   Start
  29. StartActivity (phoneintent);
  30. }
  31.   Otherwise, Toast prompts
  32.   else{
  33. Toast.maketext (Phonecalldemo.   This, "cannot be entered as empty", Toast.length_long). Show ();
  34. }
  35. }
  36. });
  37. }

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