google maps apiv2 failed to load map

Question

I try to show google maps on my aplication but i can´t this is the errors

01-17 03:54:14.312: E/AndroidRuntime(1355): FATAL EXCEPTION: main
01-17 03:54:14.312: E/AndroidRuntime(1355): java.lang.NullPointerException
01-17 03:54:14.312: E/AndroidRuntime(1355):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1374)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at android.app.Activity.startActivityForResult(Activity.java:2827)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:839)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at android.app.Activity.startActivity(Activity.java:2933)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at com.google.android.gms.dynamic.a$5.onClick(Unknown Source)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at android.view.View.performClick(View.java:2485)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at android.view.View$PerformClick.run(View.java:9080)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at android.os.Handler.handleCallback(Handler.java:587)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at android.os.Handler.dispatchMessage(Handler.java:92)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at android.os.Looper.loop(Looper.java:130)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at android.app.ActivityThread.main(ActivityThread.java:3683)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at java.lang.reflect.Method.invokeNative(Native Method)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at java.lang.reflect.Method.invoke(Method.java:507)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
01-17 03:54:14.312: E/AndroidRuntime(1355):     at dalvik.system.NativeStart.main(Native Method)

manifest.xml I add all permisions that i found in internet and i thing that the problem its not here

    <?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.example.flow"
        android:versionCode="1"
        android:versionName="1.0" >
        <uses-sdk
            android:minSdkVersion="4"
            android:targetSdkVersion="18" />
            <permission
                android:name="com.example.flow.permission.MAPS_RECEIVE"
                android:protectionLevel="signature" />
        <uses-feature
                android:glEsVersion="0x00020000"
                android:required="true"/> 
            <uses-permission android:name="com.example.flow.permission.MAPS_RECEIVE" />
            <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
            <uses-permission android:name="android.permission.INTERNET"/>
            <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
            <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
            <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
            <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
 <application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.flow.Flow"
        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="AIzaSyDNIkpmmuFyj2vpTfAPtnqWpf-EX94bRl0"/>
    <meta-data
          android:name="com.google.android.gms.version"
          android:value="@integer/google_play_services_version" />
</application>

activity_flow.xml add fragment and SupportMapFragment

<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=".Flow" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

<fragment 
          android:id="@+id/map1"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:name="com.google.android.gms.maps.SupportMapFragment"/>
</RelativeLayout>

flow.java

 package com.example.flow;
import com.google.android.gms.maps.GoogleMap;
import android.os.Bundle;
import android.content.Intent;
import android.support.v4.app.FragmentActivity;

public class Flow extends FragmentActivity {
    GoogleMap map;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_flow);    
    }
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {    
    }
}

@user3159679 where is activity declared in manifest file. where is the start of application tag? — Raghunandan, Jan 17 '14 at 05:10
Raghunandan sorry man i dont copy all manifest.xml because stockoverflow dont let me but now i post — user3159679, Jan 17 '14 at 05:33
Once go through [this](https://stackoverflow.com/questions/21007987/why-im-getting-a-white-screen-in-map-app/21011784#21011784) link which I answered in another post.. May it helps you. If you have any queries let me know. — Shailendra Madda, Jan 17 '14 at 05:10
this point i tried to do, but when i load the proyect send me warning in the icon -to copy directory ANDROID_SDK_DIR/extras/google/google_play_services/libproject/google-play-services_lib to root of your project — user3159679, Jan 17 '14 at 05:31
Did you add Google play services lib to your project? and make sure your project and library project should be present in same work space. — Shailendra Madda, Jan 17 '14 at 05:34
yes i do, but of this directory extras\google\google_play_services\libproject\google-play-services_lib — user3159679, Jan 17 '14 at 05:36
You need to move that project in to your project's work space. — Shailendra Madda, Jan 17 '14 at 05:37
i tried like you said copy google-play-servic‌es_lib to my proyect root but send me warning in the icon aplication and dont let me run, send that i have errors — user3159679, Jan 17 '14 at 05:39
this is the error google-play-services_lib] Project has no target set. Edit the project properties to set one — user3159679, Jan 17 '14 at 05:50
You need to add target to your google play service lib project goto project-->right click-->properties-->Android-->select target-->apply..>OK thats it. — Shailendra Madda, Jan 17 '14 at 05:54

score 0 · Answer 1 · answered Jan 17 '14 at 04:36

0

I guess from this line at android.app.Activity.startActivityForResult(Activity.java:2827) you might have forget to implement onActivityResult method in your class. Make sure if you are starting activity as startActivityForResult() then you must have to implement this method.

answered Jan 17 '14 at 04:36

GrIsHu

29,068
10
64
102

thanks but i implemet you say this public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.flow, menu); return true; } – user3159679 Jan 17 '14 at 04:44
@user3159679 Please post your java code. This posted code is not sufficient. – GrIsHu Jan 17 '14 at 06:24
@user3159679 In your `Flow` you have not started any activity which returns the result back to your `Flow` activity that is why its throwing nullpointer exception. – GrIsHu Jan 18 '14 at 04:53

score 0 · Answer 2 · answered Jan 17 '14 at 04:36

0

Make sure your manifest has

<permission
        android:name="com.example.flow.permission.MAPS_RECEIVE"
        android:protectionLevel="signature"/>
<uses-permission android:name="com.example.flow.permission.MAPS_RECEIVE"/>

Also make sure that you have your key (debug or release) set in the maps api console.

answered Jan 17 '14 at 04:36

vinay Maneti

1,447
1
23
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these permissions are not required. https://developers.google.com/maps/documentation/android/start#getting_the_google_maps_android_api_v2 – Raghunandan Jan 17 '14 at 04:44
@user3159679 these two are no longer required you can check the docs – Raghunandan Jan 17 '14 at 04:48
Raghunandan thans bro i got it, some other idea i was try with some 10 tutorials i read the documentation of google maps apiv2 and i can´t show the map – user3159679 Jan 17 '14 at 05:01

google maps apiv2 failed to load map

2 Answers2