安卓，谷歌地图v2应用

Question

i know this question been asked before but i didn't find the solution yet, i wrote an android app but it didn't work and i don't know what is the problem, i almost try any thing so please help !!

this is my code :

MainActivity java:-

package com.startPoint.gmap;

import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;



public class MainActivity extends FragmentActivity {

private GoogleMap map;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    map=((SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map)).getMap();

    map.setMapType(GoogleMap.MAP_TYPE_NORMAL);

 }
}

Manifest:-

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.startPoint.gmap"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="18"
    android:targetSdkVersion="18" />

<permission android:name="com.startPoint.gmap.MAPS_RECEIVE" android:protectionLevel="signature"></permission>
<uses-permission android:name="com.startPoint.gmap.permission.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="com.startPoint.gmap.providers.gsf.permissions.READ_GSEREVICES"/>

<uses-feature 
    android:glEsVersion="0x00020000"
    android:required="true"/>

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.startPoint.gmap.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="API KEY HERE"/>
</application>

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"
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="com.startPoint.gmap.MainActivity$PlaceholderFragment" >

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

</RelativeLayout>

and this is the error i get:-

03-24 03:25:13.935: D/AndroidRuntime(12021): Shutting down VM
03-24 03:25:13.935: W/dalvikvm(12021): threadid=1: thread exiting with uncaught exception (group=0x41cda700)
03-24 03:25:13.940: E/AndroidRuntime(12021): FATAL EXCEPTION: main
03-24 03:25:13.940: E/AndroidRuntime(12021): java.lang.RuntimeException: Unable to start  activity ComponentInfo{com.startPoint.gmap/com.startPoint.gmap.MainActivity}:  android.view.InflateException: Binary XML file line #11: Error inflating class fragment
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2295)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.app.ActivityThread.access$700(ActivityThread.java:159)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.os.Handler.dispatchMessage(Handler.java:99)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.os.Looper.loop(Looper.java:176)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.app.ActivityThread.main(ActivityThread.java:5419)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at java.lang.reflect.Method.invokeNative(Native Method)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at java.lang.reflect.Method.invoke(Method.java:525)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at dalvik.system.NativeStart.main(Native Method)
03-24 03:25:13.940: E/AndroidRuntime(12021): Caused by: android.view.InflateException: Binary XML file line #11: Error inflating class fragment
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:719)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.view.LayoutInflater.inflate(LayoutInflater.java:354)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:361)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.app.Activity.setContentView(Activity.java:1956)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.startPoint.gmap.MainActivity.onCreate(MainActivity.java:17)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.app.Activity.performCreate(Activity.java:5372)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2257)
03-24 03:25:13.940: E/AndroidRuntime(12021):    ... 11 more
03-24 03:25:13.940: E/AndroidRuntime(12021): Caused by: java.lang.IllegalStateException: The meta-data tag in your app's AndroidManifest.xml does not have the right value.  Expected  4030500 but found 0.  You must have the following declaration within the <application>  element:     <meta-data android:name="com.google.android.gms.version"  android:value="@integer/google_play_services_version" />
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.google.android.gms.common.GooglePlayServicesUtil.n(Unknown Source)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at  com.google.android.gms.common.GooglePlayServicesUtil.isGooglePlayServicesAvailable(Unknown Source)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.google.android.gms.maps.internal.q.v(Unknown Source)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.google.android.gms.maps.internal.q.u(Unknown Source)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.google.android.gms.maps.MapsInitializer.initialize(Unknown Source)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.google.android.gms.maps.SupportMapFragment$b.cE(Unknown Source)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.google.android.gms.maps.SupportMapFragment$b.a(Unknown Source)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.google.android.gms.dynamic.a.a(Unknown Source)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.google.android.gms.dynamic.a.onInflate(Unknown Source)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at com.google.android.gms.maps.SupportMapFragment.onInflate(Unknown Source)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:290)
03-24 03:25:13.940: E/AndroidRuntime(12021):    at     android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:691)
    03-24 03:25:13.940: E/AndroidRuntime(12021):    ... 21 more

i found in the CatLog that i should add the following permission in the manifiest

<meta-data android:name="com.google.android.gms.version"

so i did but i still have an error but the CatLog is different is it the same old problem or not ??

new LogCat

04-07 20:05:37.830: I/Google Maps Android API(26532): Google Play services client version: 4030500
04-07 20:05:37.880: I/Google Maps Android API(26532): Google Play services package version: 4324036
04-07 20:05:38.825: D/dalvikvm(26532): GC_FOR_ALLOC freed 554K, 15% free 9888K/11632K, paused 42ms, total 43ms
04-07 20:05:38.930: D/dalvikvm(26532): GC_FOR_ALLOC freed 191K, 15% free 9944K/11632K, paused 17ms, total 17ms
04-07 20:05:38.930: I/dalvikvm-heap(26532): Grow heap (frag case) to 10.884MB for 18832-byte allocation
04-07 20:05:38.950: D/dalvikvm(26532): GC_FOR_ALLOC freed 0K, 15% free 9962K/11652K, paused 18ms, total 18ms
04-07 20:05:39.170: D/dalvikvm(26532): GC_FOR_ALLOC freed 69K, 14% free 10238K/11880K, paused 30ms, total 30ms
04-07 20:05:39.720: D/AbsListView(26532): Get MotionRecognitionManager
04-07 20:05:39.755: D/AbsListView(26532): onVisibilityChanged() is called, visibility :  8
04-07 20:05:39.755: D/AbsListView(26532): unregisterIRListener() is called 
04-07 20:05:39.760: D/AbsListView(26532): onVisibilityChanged() is called, visibility : 8
04-07 20:05:39.760: D/AbsListView(26532): unregisterIRListener() is called 
04-07 20:05:39.760: D/AbsListView(26532): onVisibilityChanged() is called, visibility : 0
04-07 20:05:39.760: D/AbsListView(26532): unregisterIRListener() is called 
04-07 20:05:39.970: D/AndroidRuntime(26532): Shutting down VM
04-07 20:05:39.970: W/dalvikvm(26532): threadid=1: thread exiting with uncaught exception (group=0x41c21700)
04-07 20:05:40.000: E/AndroidRuntime(26532): FATAL EXCEPTION: main
04-07 20:05:40.000: E/AndroidRuntime(26532): java.lang.RuntimeException: Unable to start  activity ComponentInfo{com.startPoint.gmap/com.startPoint.gmap.MainActivity}: java.lang.NullPointerException
04-07 20:05:40.000: E/AndroidRuntime(26532):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2295)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2349)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at android.app.ActivityThread.access$700(ActivityThread.java:159)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1316)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at android.os.Handler.dispatchMessage(Handler.java:99)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at android.os.Looper.loop(Looper.java:176)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at android.app.ActivityThread.main(ActivityThread.java:5419)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at java.lang.reflect.Method.invokeNative(Native Method)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at java.lang.reflect.Method.invoke(Method.java:525)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at dalvik.system.NativeStart.main(Native Method)
04-07 20:05:40.000: E/AndroidRuntime(26532): Caused by: java.lang.NullPointerException
04-07 20:05:40.000: E/AndroidRuntime(26532):    at com.startPoint.gmap.MainActivity.onCreate(MainActivity.java:20)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at android.app.Activity.performCreate(Activity.java:5372)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1104)
04-07 20:05:40.000: E/AndroidRuntime(26532):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2257)
04-07 20:05:40.000: E/AndroidRuntime(26532):    ... 11 more

Answer 1

You need to add the following to your manifest file under your <application> tag:

<meta-data
    android:name="com.google.android.gms.version"
    android:value="@integer/google_play_services_version" />

Edit Assuming that you have your Google Play Services correctly set up, you could run a check when your activity is loaded to see that it is accessibe.

int errorCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
        if (errorCode == ConnectionResult.SUCCESS) {

            // ** GO TO YOUR MAP HERE

            FragmentTransaction transaction = getFragmentManager().beginTransaction();
            MyFragment myMapFragment = new MyFragment();
            transaction.replace(R.id.your_fragment_holder, myMapFragment, "MAP").commit();

        } else {
            Dialog theDialog = GooglePlayServicesUtil.getErrorDialog(errorCode, this, 1);
            theDialog.setTitle("Map update required");
            theDialog.setCancelable(true);
            theDialog.setOnCancelListener(new OnCancelListener() {
                @Override
                public void onCancel(DialogInterface dialog) {

                    //** HANDLE WHEN USER HAS NO MAPS AVAILABLE

                    FragmentTransaction transaction = getFragmentManager().beginTransaction();
                    NonMapFragment myNonMapFragment =  new NonMapFragment();
                    transaction.replace(R.id.my_fragment_manager, myNonMapFragment, "NOTAMAP").commit();
                }
            });
            theDialog.show();
        }

This will at least check whether the device is able to work with Maps.

Answer 2

Here your minimum SDK version is 18. So you need to use

android:name="com.google.android.gms.maps.MapFragment"

instead of

android:name="com.google.android.gms.maps.SupportMapFragment"

in your xml file for fragment.

After that your logcat clearly says that you haven't set google_play_services_version between < application> tag. So you need to use this.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.startPoint.gmap"
 android:versionCode="1"
 android:versionName="1.0" >

<uses-sdk
 android:minSdkVersion="18"
 android:targetSdkVersion="18" />

<permission android:name="com.startPoint.gmap.MAPS_RECEIVE"  android:protectionLevel="signature"></permission>
<uses-permission android:name="com.startPoint.gmap.permission.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="com.startPoint.gmap.providers.gsf.permissions.READ_GSEREVICES"/>

<uses-feature 
  android:glEsVersion="0x00020000"
  android:required="true"/>

<application
 android:allowBackup="true"
 android:icon="@drawable/ic_launcher"
 android:label="@string/app_name"
 android:theme="@style/AppTheme" >
 <activity
    android:name="com.startPoint.gmap.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="API KEY HERE"/>

 <meta-data
  android:name="com.google.android.gms.version"
  android:value="@integer/google_play_services_version" />
</application>

Also change here from

  map=((SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map)).getMap();

to

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