Android: September 2013

UI designs:

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" >

<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />

</RelativeLayout>

String.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

<string name="app_name">mapv2</string>
<string name="action_settings">Settings</string>
<string name="hello_world">Hello world!</string>

</resources>

MainActivity.java

package com.example.mapv2;

import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import com.google.android.gms.maps.CameraUpdateFactory;

import com.google.android.gms.maps.GoogleMap;

import com.google.android.gms.maps.MapFragment;

import com.google.android.gms.maps.model.BitmapDescriptorFactory;

import com.google.android.gms.maps.model.LatLng;

import com.google.android.gms.maps.model.Marker;

import com.google.android.gms.maps.model.MarkerOptions;

public class MainActivity extends Activity {

static final LatLng HAMBURG = new LatLng(53.558, 9.927);

static final LatLng KIEL = new LatLng(53.551, 9.993);

private GoogleMap map;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))

.getMap();

Marker hamburg = map.addMarker(new MarkerOptions().position(HAMBURG)

.title("Hamburg"));

Marker kiel = map.addMarker(new MarkerOptions()

.position(KIEL)

.title("Kiel")

.snippet("Kiel is cool")

.icon(BitmapDescriptorFactory

.fromResource(R.drawable.ic_launcher)));

// Move the camera instantly to hamburg with a zoom of 15.

map.moveCamera(CameraUpdateFactory.newLatLngZoom(HAMBURG, 15));

// Zoom in, animating the camera.

map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

how to get google api key for google maps:

To refers below links:

3rd is very usful for you..................

1.http://www.alperguc.com/en/web-apis/google-maps-api/google-maps-api-key.html

2.http://stackoverflow.com/questions/14440043/how-to-get-google-maps-api-key

3.http://docs.xamarin.com/guides/android/platform_features/maps_and_location/obtaining_a_google_maps_api_key

Androidmanifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.example.mapv2"

android:versionCode="1"

android:versionName="1.0" >

<uses-sdk

android:minSdkVersion="11"

android:targetSdkVersion="17" />

<uses-feature

android:glEsVersion="0x00020000"

android:required="true"/>

<uses-permission android:name="android.permission.INTERNET"/>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

<uses-permission android:name="com.example.mapv2.permission.MAPS_RECEIVE"/>

<permission

android:name="com.example.mapv2.permission.MAPS_RECEIVE"

android:protectionLevel="signature"/>

<application

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme" >

<activity

android:name="com.example.mapv2.MainActivity"

android:label="@string/app_name" >

<intent-filter>

</intent-filter>

</activity>

<meta-data

android:name="com.google.android.maps.v2.API_KEY"

android:value="AIzaSyAQMBQBnFU7SO8OHOhBlXr8AE0XEy9Xd8c" />

</application>

</manifest>

1 Android Layout Files:

<?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:orientation="vertical" >
 
    <Button
        android:id="@+id/buttonCall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="call 9876543210" />
 
</LinearLayout>

2. Activity

Use below code snippet to make a phone call in Android.

 Intent callIntent = new Intent(Intent.ACTION_CALL);
 callIntent.setData(Uri.parse("tel:9876543210"));
 startActivity(callIntent);


File : MainActivity.java – When the button is call, make a phone to 9876543210.


package com.example.android;
 
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;
 
public class MainActivity extends Activity {
 
 private Button button;
 
 public void onCreate(Bundle savedInstanceState) {
 
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
 
  button = (Button) findViewById(R.id.buttonCall);
 
  // add button listener
  button.setOnClickListener(new OnClickListener() {
 
   @Override
   public void onClick(View arg0) {
 
    Intent callIntent = new Intent(Intent.ACTION_CALL);
    callIntent.setData(Uri.parse("tel:9876543210"));
    startActivity(callIntent);
 
   }
 
  });
 
 }
 
}

3 Android Manifest

To make a phone call, Android need CALL_PHONE permission.


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



<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.android"
    android:versionCode="1"
    android:versionName="1.0" >
 
    <uses-sdk android:minSdkVersion="10" />
 
 <uses-permission android:name="android.permission.CALL_PHONE" />
 
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
 
        <activity
            android:label="@string/app_name"
            android:name=".MainActivity" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 
</manifest>



4. PhoneStateListener example

Ok, now we update the above activity, to monitor the phone call states, when a phone call is ended, come back to the original activity (actually, it just restart the activity). Read comment, it should be self-explanatory.

Note
Run it and refer to the logcat console to understand how PhoneStateListener works.

File : MainActivity.java


package com.example.android;
 
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
 
public class MainActivity extends Activity {
 
 final Context context = this;
 private Button button;
 
 public void onCreate(Bundle savedInstanceState) {
 
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
 
  button = (Button) findViewById(R.id.buttonCall);
 
  // add PhoneStateListener
  PhoneCallListener phoneListener = new PhoneCallListener();
  TelephonyManager telephonyManager = (TelephonyManager) this
   .getSystemService(Context.TELEPHONY_SERVICE);
  telephonyManager.listen(phoneListener,PhoneStateListener.LISTEN_CALL_STATE);
 
  // add button listener
  button.setOnClickListener(new OnClickListener() {
 
   @Override
   public void onClick(View arg0) {
 
    Intent callIntent = new Intent(Intent.ACTION_CALL);
    callIntent.setData(Uri.parse("tel:9876543210"));
    startActivity(callIntent);
 
   }
 
  });
 
 }
 
 //monitor phone call activities
 private class PhoneCallListener extends PhoneStateListener {
 
  private boolean isPhoneCalling = false;
 
  String LOG_TAG = "LOGGING 123";
 
  @Override
  public void onCallStateChanged(int state, String incomingNumber) {
 
   if (TelephonyManager.CALL_STATE_RINGING == state) {
    // phone ringing
    Log.i(LOG_TAG, "RINGING, number: " + incomingNumber);
   }
 
   if (TelephonyManager.CALL_STATE_OFFHOOK == state) {
    // active
    Log.i(LOG_TAG, "OFFHOOK");
 
    isPhoneCalling = true;
   }
 
   if (TelephonyManager.CALL_STATE_IDLE == state) {
    // run when class initial and phone call ended, 
    // need detect flag from CALL_STATE_OFFHOOK
    Log.i(LOG_TAG, "IDLE");
 
    if (isPhoneCalling) {
 
     Log.i(LOG_TAG, "restart app");
 
     // restart app
     Intent i = getBaseContext().getPackageManager()
      .getLaunchIntentForPackage(
       getBaseContext().getPackageName());
     i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
     startActivity(i);
 
     isPhoneCalling = false;
    }
 
   }
  }
 }
 
}



Update Android Manifest file again, PhoneStateListener need READ_PHONE_STATE permission.


<uses-permission android:name="android.permission.READ_PHONE_STATE" />



File : AndroidManifest.xml


<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.android"
    android:versionCode="1"
    android:versionName="1.0" >
 
    <uses-sdk android:minSdkVersion="10" />
 
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
 
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
 
        <activity
            android:label="@string/app_name"
            android:name=".MainActivity" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 
</manifest>

Android

Monday, 2 September 2013

Android Map v2 example code .

How To Make A Phone Call In Android

1 Android Layout Files:

2. Activity

3 Android Manifest

4. PhoneStateListener example

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