Android to make phone calls function _android

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

The following are the steps to develop this instance:

One, 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

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android= 
 
"http://schemas.android.com/apk/" Res/android " 
 
android:orientation=" vertical " 
 
android:layout_width=" fill_parent " 
 
android:layout_" height= "Fill_parent" 
 
> 
 
<textview 
 
android:layout_width= "fill_parent" 
 
android:layout_ height= "Wrap_content" 
 
android:text= "please input the Phonenumer:" 
 
/> 
 
<edittext 
 
D= "@+id/et1" 
 
android:layout_width= "fill_parent" 
 
android:layout_height= "Wrap_content" 
 
android: Phonenumber= "true" 
 
/> 
 
<button android:id= @+id/bt1 "android:layout_width=" 
 
wrap_ Content " 
 
android:layout_height=" wrap_content " 
 
android:text=" call Phone " 
 
/> 
 

Third, increase the access to the telephone, open androidmanifest.xml, modify the code as follows:

xml/html Code

<?xml version= "1.0" encoding= "Utf-8"?> <manifest xmlns:android= 
 
"http://schemas.android.com/apk/res/" Android " 
 
package=" com.android.test " 
 
android:versioncode=" 1 " 
 
android:versionname=" 1.0 "> 
 
< Application android:icon= "@drawable/icon" android:label= "@string/app_name" > <activity android:name= 
 
". Phonecalldemo " 
 
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-sdk android:minsdkversion= "3"/ >  
 
<uses-permission android:name= "Android.permission.CALL_PHONE" > 
 
</uses-permission> 
 

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

 Package Com.android.test;import android.app.Activity; 
 
　　Import android.content.Intent; 
 
　　Import Android.net.Uri; 
 
　　Import Android.os.Bundle; 
 
　　Import Android.view.View; 
 
　　Import Android.widget.Button; 
 
　　Import Android.widget.EditText;
 
 Import Android.widget.Toast; 
 
　　public class Phonecalldemo extends activity {private Button BT; 
 
　　Private EditText et; 
 
　　public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); 
 
　　Setcontentview (R.layout.main); 
 
　　Obtain Resources BT = (Button) Findviewbyid (R.ID.BT1); 
 
　　ET = (edittext) Findviewbyid (R.ID.ET1); Add Event Response Bt.setonclicklistener (new Button.onclicklistener () {@Override public void OnClick (View v) {//Get input 
 
　　The phone number string inputstr = Et.gettext (). toString (); If the input is not empty create a call Intent if (Inputstr.trim (). Length ()!=0) {Intent phoneintent = new Intent ("Android.intent.act Ion. 
 
　　Call ", Uri.parse (" Tel: "+ inputstr)); Start StartactiviTy (phoneintent); 
 
　　//Otherwise Toast prompts else{toast.maketext (phonecalldemo.this, "cannot enter blank", Toast.length_long). Show (); 
 
　　} 　　} 　　});  }

Above is the Android development call Simple example, follow-up continue to supplement the relevant information, thank you for your support for this site!