PlaceAutoCompleteFragment не может начать работу java.lang.NullPointerException

Question

Каждый раз, когда я пытаюсь запустить свое приложение, он сбой или остановка.

Будет ли какое-либо решение или альтернативный вариант? Я пытаюсь реализовать PlaceAutocompleteFragment в моей деятельности

Мой код:

import android.content.Intent; 
import android.os.Bundle; 
import android.support.v4.app.FragmentActivity; 
import android.view.View; 
import android.view.Window; 
import android.widget.AutoCompleteTextView; 
import android.widget.Button; 

import com.google.android.gms.common.api.Status; 
import com.google.android.gms.location.places.AutocompleteFilter; 
import com.google.android.gms.location.places.Place; 
import com.google.android.gms.location.places.ui.PlaceAutocompleteFragment; 
import com.google.android.gms.location.places.ui.PlaceSelectionListener; 

public class Home extends FragmentActivity { 
    PlaceAutocompleteFragment autocompleteFragment,froms,tos; 

    protected static final int RESULT_CODE = 123; 
    private AutoCompleteTextView from; 
    private AutoCompleteTextView to; 

    @Override 
    protected void onCreate(Bundle arg0) { 
     super.onCreate(arg0); 
     requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); 
     setContentView(R.layout.directions_input); 

     //to = (EditText) findViewById(R.id.to); 
     Button btnLoadDirections = (Button) findViewById(R.id.load_directions); 


     btnLoadDirections.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       Intent data = new Intent(Home.this, DirectionsApi.class); 
       data.putExtra("from", froms.getText(0).toString()); 
       data.putExtra("to", tos.getText(0).toString()); 
       startActivity(data); 
      } 
     }); 



     froms = (PlaceAutocompleteFragment)getFragmentManager().findFragmentById(R.id.froms); 
     AutocompleteFilter typeFilter = new AutocompleteFilter.Builder() 
       .setTypeFilter(AutocompleteFilter.TYPE_FILTER_ESTABLISHMENT) 
       .build(); 
     autocompleteFragment.setFilter(typeFilter); 
     autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() { 
      @Override 
      public void onPlaceSelected(Place place) { 
      froms.setText((CharSequence) place); 
      } 

      @Override 
      public void onError(Status status) { 

      } 
     }); 


     tos = (PlaceAutocompleteFragment)getFragmentManager().findFragmentById(R.id.tos); 
     typeFilter = new AutocompleteFilter.Builder() 
       .setTypeFilter(AutocompleteFilter.TYPE_FILTER_ESTABLISHMENT) 
       .build(); 
     autocompleteFragment.setFilter(typeFilter); 
     autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() { 
      @Override 
      public void onPlaceSelected(Place place) { 
       tos.setText((CharSequence) place); 
      } 

      @Override 
      public void onError(Status status) { 

      } 
     }); 
} 

Мой XML:

<LinearLayout android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    android:gravity="center" 
    android:padding="16dp" 
    android:orientation="vertical" 
    xmlns:android="http://schemas.android.com/apk/res/android"> 

    <TextView 
     android:id="@+id/from_label" 
     android:layout_gravity="fill_horizontal" 
     android:text="@string/from" 
     android:textColor="?android:textColorSecondary" 
     android:layout_width="wrap_content" 
     android:layout_height="match_parent" /> 

<!-- <AutoCompleteTextView 
     android:id="@+id/from" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_gravity="fill_horizontal"/>--> 
    <fragment 
     android:id="@+id/froms" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:background="#87E886" 

     android:name="com.google.android.gms.location.places.ui.PlaceAutocompleteFragment" 
     /> 

    <TextView 
     android:id="@+id/to_label" 
     android:layout_gravity="fill_horizontal" 
     android:text="@string/to" 
     android:textColor="?android:textColorSecondary" 
     android:layout_width="wrap_content" 
     android:layout_height="match_parent" /> 

<!-- <AutoCompleteTextView 
     android:id="@+id/to" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:layout_gravity="fill_horizontal" />--> 
    <fragment 
     android:id="@+id/tos" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:background="#87E886" 

     android:name="com.google.android.gms.location.places.ui.PlaceAutocompleteFragment" 
     /> 

    <Button 
     android:id="@+id/load_directions" 
     android:layout_gravity="fill_horizontal" 
     android:text="@string/load_directions" 
     android:layout_width="wrap_content" 
     android:layout_height="match_parent" /> 

</LinearLayout> 

ошибки LogCat:

at com.test.test.onCreate(Home.java:81) 
FATAL EXCEPTION: main 
    Process: com.test.test, PID: 21545 


    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test.test/com.test.test.Home}: 
java.lang.NullPointerException 

Answer 1

Изменить

froms = (PlaceAutocompleteFragment)getFragmentManager().findFragment‌​ById(R.id.froms); 

в

froms = (PlaceAutocompleteFragment)getSupportFragmentManager().findF‌​ragmentById(R.id.fro‌​ms); 

Поскольку вы используете android.support.v4.app.FragmentActivity;