Friday 29 December 2017

Android Java.Lang.RuntimeException : Unable to start activity Component Info

itemprop="text">

I'm new in android programmer.
Recently, I trying to make project that using google map v2 in android app, but I'm
getting a lot of error (I have add google play services to my library and find similar
topic in here, but not solved my problem).Please see my log cat bellow
:




UPDATED





03-22
            13:52:29.331: E/AndroidRuntime(17708): FATAL EXCEPTION: main
03-22
            13:52:29.331: E/AndroidRuntime(17708): java.lang.RuntimeException: Unable to resume
            activity {com.yai.testmap/com.yai.testmap.MainActivity}:
            java.lang.NullPointerException
03-22 13:52:29.331: E/AndroidRuntime(17708): at
            android.app.ActivityThread.performResumeActivity(ActivityThread.java:2613)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2641)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2127)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            android.app.ActivityThread.access$600(ActivityThread.java:140)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            android.app.ActivityThread$H.handleMessage(ActivityThread.java:1228)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            android.os.Handler.dispatchMessage(Handler.java:99)
03-22 13:52:29.331:
            E/AndroidRuntime(17708): at android.os.Looper.loop(Looper.java:137)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            android.app.ActivityThread.main(ActivityThread.java:4895)

03-22
            13:52:29.331: E/AndroidRuntime(17708): at java.lang.reflect.Method.invokeNative(Native
            Method)
03-22 13:52:29.331: E/AndroidRuntime(17708): at
            java.lang.reflect.Method.invoke(Method.java:511)
03-22 13:52:29.331:
            E/AndroidRuntime(17708): at
            com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at dalvik.system.NativeStart.main(Native
            Method)
03-22 13:52:29.331: E/AndroidRuntime(17708): Caused by:
            java.lang.NullPointerException
03-22 13:52:29.331: E/AndroidRuntime(17708): at
            com.yai.testmap.MainActivity.setUpMapIfNeeded(MainActivity.java:93)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            com.yai.testmap.MainActivity.onResume(MainActivity.java:187)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1199)
03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            android.app.Activity.performResume(Activity.java:5237)

03-22
            13:52:29.331: E/AndroidRuntime(17708): at
            android.app.ActivityThread.performResumeActivity(ActivityThread.java:2603)
03-22
            13:52:29.331: E/AndroidRuntime(17708): ... 12
            more


UPDATE



my MainActivity.java
:




package
            com.yai.testmap;


import
            android.support.v7.app.ActionBarActivity;
import
            android.support.v4.app.Fragment;
import android.os.Bundle;
import
            android.view.LayoutInflater;
import android.view.Menu;
import
            android.view.MenuItem;
import android.view.View;
import
            android.view.ViewGroup;


/* FOR ERROR REPPORT
            */
import android.util.Log;

/* IMPORT FOR DROPDOWNLIST
            USED THIS PROJECT */
import android.widget.CheckBox;
import
            android.widget.Spinner;
import android.widget.Toast;
import
            android.widget.AdapterView;
import
            android.widget.ArrayAdapter;
import
            android.widget.AdapterView.OnItemSelectedListener;


/*
            IMPORT FOR GOOGLE MAP */
import
            com.google.android.gms.maps.GoogleMap;
import
            com.google.android.gms.maps.SupportMapFragment;

/* FOR GOOGLE MAP
            TYPE */
import static
            com.google.android.gms.maps.GoogleMap.MAP_TYPE_HYBRID;
import static
            com.google.android.gms.maps.GoogleMap.MAP_TYPE_NONE;
import static
            com.google.android.gms.maps.GoogleMap.MAP_TYPE_NORMAL;
import static
            com.google.android.gms.maps.GoogleMap.MAP_TYPE_SATELLITE;

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

class
            PlaceholderFragment extends Fragment implements OnItemSelectedListener{

            private GoogleMap mGoogleMap;
 private CheckBox mTrafficCheckbox,
            mLocationCheckbox, mBuildingCheckbox, mIndoorCheckbox;

 public
            PlaceholderFragment() {
 }


            @Override

 public View onCreateView(LayoutInflater inflater,
            ViewGroup container, Bundle savedInstanceState) {
 View rootView =
            inflater.inflate(R.layout.fragment_main, container, false);


            Spinner spinner = (Spinner) rootView.findViewById(R.id.spinnerOption);

            ArrayAdapter adapter = ArrayAdapter.createFromResource(getActivity(),
            R.array.spinner_option_string, android.R.layout.simple_spinner_item);

            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

            spinner.setAdapter(adapter);

            spinner.setOnItemSelectedListener((OnItemSelectedListener)
            getActivity());

 mTrafficCheckbox = (CheckBox)
            rootView.findViewById(R.id.checkbox_traffic);

 mLocationCheckbox =
            (CheckBox) rootView.findViewById(R.id.checkbox_location);
 mBuildingCheckbox =
            (CheckBox) rootView.findViewById(R.id.checkbox_building);
 mIndoorCheckbox =
            (CheckBox) rootView.findViewById(R.id.checkbox_indoor);

 return
            rootView;
 }

 @Override
 public void
            onItemSelected(AdapterView parent, View view, int position,
 long id)
            {

 // TODO Auto-generated method stub


            }
 @Override
 public void onNothingSelected(AdapterView parent)
            {
 // TODO Auto-generated method stub


            }
}



public class MainActivity
            extends ActionBarActivity implements OnItemSelectedListener {
 private
            GoogleMap mGoogleMap;
 private CheckBox mTrafficCheckbox, mLocationCheckbox,
            mBuildingCheckbox, mIndoorCheckbox;

 @Override
 protected
            void onCreate(Bundle savedInstanceState) { 

            super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
            


 if (savedInstanceState == null) {

            getSupportFragmentManager().beginTransaction()
 .add(R.id.container, new
            PlaceholderFragment()).commit();
 } 
 } 


            private void setUpMapIfNeeded(){
 if(mGoogleMap == null){

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

            }

 }

 private boolean checkReady(){

            if(mGoogleMap == null){
 Toast.makeText(this, R.string.map_not_ready,
            Toast.LENGTH_SHORT).show();
 return false;
 }
 return
            true;
 }


 private void
            updateTraffic(){
 if(!checkReady()){
 return;

            }
 mGoogleMap.setTrafficEnabled(mTrafficCheckbox.isChecked());

            }

 public void onTrafficToggled(View view){

            updateTraffic();
 }


 private void
            updateLocation(){
 if(!checkReady()){
 return;

            }
 mGoogleMap.setMyLocationEnabled(mLocationCheckbox.isChecked());

            }

 public void onLocationToggled(View view){

            updateLocation();

 }

 private void
            updateBuilding(){
 if(!checkReady()){
 return;

            }
 mGoogleMap.setBuildingsEnabled(mBuildingCheckbox.isChecked());

            }

 public void onBuildingToggled(View view){


            updateBuilding();
 }

 private void
            updateIndoor(){
 if(!checkReady()){
 return;
 }

            mGoogleMap.setIndoorEnabled(mIndoorCheckbox.isChecked());

            }


 public void onIndoorToggled(View view){

            updateIndoor();
 }

 @Override
 public void
            onItemSelected(AdapterView parent, View view, int position, long id){

            setLayer((String) parent.getItemAtPosition(position));

            }

 private void setLayer(String layerName){


            if(!checkReady()){
 return;
 }


            if(layerName.equals(getString(R.string.normal))){

            mGoogleMap.setMapType(MAP_TYPE_NORMAL);
 }
 else
            if(layerName.equals(getString(R.string.hybrid))){

            mGoogleMap.setMapType(MAP_TYPE_HYBRID);
 }

 else
            if(layerName.equals(getString(R.string.satellite))){

            mGoogleMap.setMapType(MAP_TYPE_SATELLITE);
 }
 else
            if(layerName.equals(getString(R.string.terrain))){

            mGoogleMap.setMapType(MAP_TYPE_TERRAIN);
 }
 else
            if(layerName.equals(getString(R.string.none_map))){

            mGoogleMap.setMapType(MAP_TYPE_NONE);
 }

            else{

 Log.i("LDA", "Error setting layer with name " +
            layerName);
 }
 }

 @Override
 public
            void onNothingSelected(AdapterView parent){


            }

 @Override

 protected void onResume()
            {
 super.onResume();
 setUpMapIfNeeded();
 if (mGoogleMap
            != null) {
 updateTraffic();
 updateLocation();

            updateBuilding();
 updateIndoor();
 }

            }




 @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;

            }


 @Override
 public boolean
            onOptionsItemSelected(MenuItem item) {
 // Handle action bar item clicks here.
            The action bar will
 // automatically handle clicks on the Home/Up button, so
            long
 // as you specify a parent activity in AndroidManifest.xml.

            int id = item.getItemId();
 if (id == R.id.action_settings) {

            return true;
 }

 return
            super.onOptionsItemSelected(item);
 }

 /**
 * A
            placeholder fragment containing a simple view.
 */
 public static
            class PlaceholderFragment extends Fragment {

 public
            PlaceholderFragment() {
 }



            @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup
            container,
 Bundle savedInstanceState) {
 View rootView =
            inflater.inflate(R.layout.fragment_main, container,
 false);
 return
            rootView;
 }

            }


}



I'm
using fragment here, so here is fragment_main.xml
:



            encoding="utf-8"
            ?>










             android:id="@+id/spinnerOption"

            android:layout_width="match_parent"
 android:layout_height="wrap_content"
            />


 
            android:id="@+id/checkbox_traffic"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:onClick="onTrafficToggled"
 android:text="@string/traffic"
            />

 
            android:id="@+id/checkbox_location"

            android:layout_width="wrap_content"


            android:layout_height="wrap_content"

            android:onClick="onLocationToggled"
 android:text="@string/location"
            />

 
            android:id="@+id/checkbox_building"

            android:layout_width="wrap_content"
 android:layout_height="wrap_content"
            
 android:onClick="onBuildingsToggled"

            android:checked="true"

 android:text="@string/building"
            />

 
            android:id="@+id/checkbox_indoor"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:onClick="onIndoorToggled"
 android:checked="true"

            android:text="@string/indoor"
            />


and my
manifest



            encoding="utf-8"?>
            xmlns:android="http://schemas.android.com/apk/res/android"
package="com.yai.testmap"
android:versionCode="1"
android:versionName="1.0"
            >



            android:minSdkVersion="9"
 android:targetSdkVersion="17"
            />

            android:name="android.permission.INTERNET" />
            android:name="android.permission.ACCESS_NETWORK_STATE"
            />
            android:name="android.permission.WRITE_EXTERNAL_STORAGE"
            />
            android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"
            />
            android:name="android.permission.ACCESS_COARSE_LOCATION"
            />

            android:name="android.permission.ACCESS_FINE_LOCATION"
            />


            android:glEsVersion="0x00020000"

            android:required="true"
/>


            android:allowBackup="true"

            android:icon="@drawable/ic_launcher"


            android:label="@string/app_name"
 android:theme="@style/AppTheme"
            >

 
            android:name="com.google.android.gms.version"

            android:value="@integer/google_play_services_version" 

            />

 
            android:name="com.yai.testmap.MainActivity"


            android:label="@string/app_name" >
 

            


            

            
 

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


            android:value="SUPER SCREET CODE"

            />





here
my activity_main.xml
:



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

xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.yai.testmap.MainActivity"
tools:ignore="MergeRootFrame"
            />


I'm curious for
my Spinner and function setUpMapIfNeeded(), because when I'm commenting that parts of
code, my app work. What I miss? Any idea? many thanks.



Answer





Try
this..



Remove Spinner
and all CheckBox from MainActivity to
PlaceholderFragment like below



public static class
            PlaceholderFragment extends Fragment implements
            OnItemSelectedListener{

 public PlaceholderFragment() {

            }

 @Override

 public View
            onCreateView(LayoutInflater inflater, ViewGroup container,
 Bundle
            savedInstanceState) {
 View rootView =
            inflater.inflate(R.layout.fragment_main, container,

            false);

 Spinner spinner = (Spinner)
            rootView.findViewById(R.id.spinnerOption);
 ArrayAdapter adapter =
            ArrayAdapter.createFromResource(getActivity(), R.array.spinner_option_string,
            android.R.layout.simple_spinner_item);

            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

            spinner.setAdapter(adapter);

            spinner.setOnItemSelectedListener(getActivity());



            mTrafficCheckbox = (CheckBox) rootView.findViewById(R.id.checkbox_traffic);

            mLocationCheckbox = (CheckBox) rootView.findViewById(R.id.checkbox_location);

            mBuildingCheckbox = (CheckBox) rootView.findViewById(R.id.checkbox_building);

            mIndoorCheckbox = (CheckBox)
            rootView.findViewById(R.id.checkbox_indoor);

 return
            rootView;

            }
}



and



@Override
protected
            void onCreate(Bundle savedInstanceState) { 
 /* CREATE OPTION FOR DROPDOWN
            LIST*/
 super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);

 if (savedInstanceState ==
            null) {

 getSupportFragmentManager().beginTransaction()

            .add(R.id.container, new PlaceholderFragment()).commit();
 }
            
}

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