Here we will learn the steps / code to make a call from your android application .
What are we going to do ?
-> We will make a button and when we press the button we will be able to call on the desired number
What we need ?
The code for the above layout is given below :
activity_main.xml
Step 2 : Make changes in the MainActivity.java file in the src folder .
MainActivity.java
You can change the number (marked in green) to the number you desire to call
Step 3 : Add CALL permission in AndroidManifest.xml file .
AndroidManifest.xml
Step 4 : Run the project
When you click the button you see a keypad with the number we used in our code . You can call the number pressing the call button .
NOTE :If you want to directly call the desired number without letting the keypad to be seen , just change the word ACTION_DIAL with DIAL in your java file (MainActivity.java) .
What are we going to do ?
-> We will make a button and when we press the button we will be able to call on the desired number
- A Relative layout
- A Button
- The number you desire to call
The code for the above layout is given below :
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" android:background="#FF0000" > <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:background="#F0F0FF" android:padding="10dp" android:textSize="30dp" android:text="Make a Call to 0000" /> </RelativeLayout>
Step 2 : Make changes in the MainActivity.java file in the src folder .
MainActivity.java
package com.mia.makecall;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.app.Activity;
import android.content.Intent;
public class MainActivity extends Activity {
Button callbutton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
callbutton = (Button) findViewById(R.id.button1);
callbutton.setOnClickListener(new OnClickListener(){
public void onClick(View arg0){
Intent i1 = new Intent(android.content.Intent.ACTION_DIAL,Uri.parse("tel:0000"));
startActivity(i1);
}
});
}
}
You can change the number (marked in green) to the number you desire to call
Step 3 : Add CALL permission in AndroidManifest.xml file .
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.mia.makecall" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="16" /> <uses-permission android:name="android.permission.CALL_PHONE"/> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name="com.mia.makecall.MainActivity" 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> </manifest>
Step 4 : Run the project
When you click the button you see a keypad with the number we used in our code . You can call the number pressing the call button .
NOTE :If you want to directly call the desired number without letting the keypad to be seen , just change the word ACTION_DIAL with DIAL in your java file (MainActivity.java) .
- In the xml file (activity_main.xml) we just made a button with id button1 which when clicked performs an action of calling a particular number .
Button callbutton;
- In the java file MainActivity.java we made an instance of a Button ,then we linked it with the button in activity_main.xml .
callbutton = (Button) findViewById(R.id.button1);
- By call the setOnClickListener() with the instance of our button we provide an action of our choice to the button .
callbutton.setOnClickListener(new OnClickListener(){
public void onClick(View arg0){
- Intent is an used to perform a specialized function . A Uri is used to take input from its parameters and display it to the specific place . The Uri takes the number as the input and displays it on the dialpad using tel function .
Intent i1 = new Intent(android.content.Intent.ACTION_DIAL,Uri.parse("tel:0000"));
startActivity(i1
- We have to include CALL_PHONE permission in AndroidManifest.xml which gives us access to the components in the phone (call opertion inbuild in the phone)
<uses-permission android:name="android.permission.CALL_PHONE"/>
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