android maps view blank - android-fragments

Question

I am following the steps in google but can't see my map in fragment. bellow is the code. if guys please help me?
I already added google-play-services_lib with my project. testing in real device. using Google APIs
Mainfest: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mymaps"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="12"
android:targetSdkVersion="17" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<permission
android:name="com.example.mymap.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<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="com.example.mymap.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.mymaps.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>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="MY KEY" />
<uses-library
android:name="com.google.android.maps"
android:required="true" />
</application>
</manifest>
UI 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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hello_world" />
<fragment
android:id="#+id/the_map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment"
/>
</RelativeLayout>
MainActivity:
package com.example.mymaps;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {
setContentView(R.layout.activity_main);
} catch (Exception e) {
System.out.print(e);
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}

Answer 1

Put these lines on the AndroidManifest.xml file after the meta-data tag::
<meta-data android:name="com.google.android.gms.version"
android:value="#integer/google_play_services_version" />
Google has made it mandatory for android phones to have the google play services installed in order to use the map. So the tag checks for google play services is installed on the phone or not. If no, then it automatically redirects the user to google play site to get the required software installed..
If the problem still exists, then use this tutorial by Ravi Tamada and do not forget to add the lines mentioned in this answer.
http://www.androidhive.info/2013/08/android-working-with-google-maps-v2/

Answer 2

dec variable as global private GoogleMap googleMap;
extends FragmentActivity not Activity
after setContentView add this code
FragmentManager fragmentManager = getSupportFragmentManager();
SupportMapFragment mapFragment = (SupportMapFragment) fragmentManager
.findFragmentById(R.id.map);
googleMap = mapFragment.getMap();
googleMap.getUiSettings().setCompassEnabled(true);
googleMap.getUiSettings().setZoomControlsEnabled(true);
googleMap.getUiSettings().setMyLocationButtonEnabled(true);
googleMap.setMyLocationEnabled(true);
googleMap.getUiSettings().setMyLocationButtonEnabled(true);
googleMap.getUiSettings().setRotateGesturesEnabled(true);
in xml
<fragment
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.SupportMapFragment" />
if you generate the googleMap api key with currect pakage name this will work