Кнопка Android Click Click In Fragment (Crash)

Мое приложение падает при запуске, причиной сбоя является метод кнопки в следующем коде. Мне интересно, где мне нужно разместить метод, чтобы он успешно выполнялся.Кнопка Android Click Click In Fragment (Crash)

Fragment1.java

package ie.itsligo.medication; 

import android.os.Bundle; 
import android.support.v4.app.Fragment; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.Button; 
import android.widget.LinearLayout; 
import android.widget.Toast; 

public class Fragment1 extends Fragment { 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
      Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 


     if (container == null){ 

      return null; 
     } 

     Button btn = (Button) getView().findViewById(R.id.btnRespond); 

     btn.setOnClickListener(new View.OnClickListener() { 

       @Override 
       public void onClick(View v) { 
        Toast.makeText(getActivity(), "You Are Now Active! Swipe Left For Patient Details & Medical Information", Toast.LENGTH_LONG).show(); 
       } 
     }); 

     return (LinearLayout)inflater.inflate(R.layout.fragment1_layout, container, false); 
    } 
}

fragment1_layout.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:background="#D70B0D" 
    android:orientation="vertical" > 

    <TextView 
     android:id="@+id/textView6" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_gravity="center" 
     android:layout_marginTop="5dp" 
     android:text="Emergency GPS Location" 
     android:textAppearance="?android:attr/textAppearanceLarge" 
     android:textColor="#FFFFFF" 
     android:textStyle="bold" /> 

    <fragment 
     android:id="@+id/map" 
     android:name="com.google.android.gms.maps.MapFragment" 
     android:layout_width="match_parent" 
     android:layout_height="400dp" 
     android:layout_margin="5dp"/> 

    <Button 
     android:id="@+id/btnRespond" 
     android:layout_width="250dp" 
     android:layout_height="wrap_content" 
     android:text="Respond To Call" 
     android:layout_gravity="center" 
     android:layout_marginBottom="5dp" 
     android:layout_marginTop="5dp" 
     android:textColor="#FFFFFF" 
     android:textStyle="bold" 
     android:background="@drawable/button_animation" 
     android:padding="5dp"/> 


</LinearLayout>

LogCat

02-21 13:43:36.224: D/AndroidRuntime(9141): Shutting down VM 
02-21 13:43:36.224: W/dalvikvm(9141): threadid=1: thread exiting with uncaught exception (group=0x411072a0) 
02-21 13:43:36.364: E/AndroidRuntime(9141): FATAL EXCEPTION: main 
02-21 13:43:36.364: E/AndroidRuntime(9141): java.lang.NullPointerException 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at ie.itsligo.medication.Fragment1.onCreateView(Fragment1.java:25) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.support.v4.app.Fragment.performCreateView(Fragment.java:1786) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:947) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1126) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1489) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:486) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.support.v4.view.ViewPager.populate(ViewPager.java:1073) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.support.v4.view.ViewPager.populate(ViewPager.java:919) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.View.measure(View.java:15288) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4876) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1396) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:681) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:574) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.View.measure(View.java:15288) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4876) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.View.measure(View.java:15288) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4876) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1396) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:681) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:574) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.View.measure(View.java:15288) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4876) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2397) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.View.measure(View.java:15288) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1974) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1217) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1390) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1113) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4481) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.Choreographer.doCallbacks(Choreographer.java:555) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.Choreographer.doFrame(Choreographer.java:525) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.os.Handler.handleCallback(Handler.java:615) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.os.Handler.dispatchMessage(Handler.java:92) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.os.Looper.loop(Looper.java:137) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at android.app.ActivityThread.main(ActivityThread.java:4867) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at java.lang.reflect.Method.invokeNative(Native Method) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at java.lang.reflect.Method.invoke(Method.java:511) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1007) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:774) 
02-21 13:43:36.364: E/AndroidRuntime(9141):  at dalvik.system.NativeStart.main(Native Method) 
02-21 13:43:36.424: D/dalvikvm(9141): GC_CONCURRENT freed 256K, 13% free 9479K/10823K, paused 15ms+4ms, total 62ms 
02-21 13:43:48.536: I/Process(9141): Sending signal. PID: 9141 SIG: 9

источник

2015-02-21 Martin Hoban

Проблема заключается в том, что вы используете вид перед накачиванием его, так что вы получите NullPointerException действительно ,

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 

    View view = inflater.inflate(R.layout.fragment1_layout, container, false); 
    Button btn = (Button) view.findViewById(R.id.btnRespond); 

    btn.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      Toast.makeText(getActivity(), "You Are Now Active! Swipe Left For Patient Details & Medical Information", Toast.LENGTH_LONG).show(); 
     } 
    }); 

    return view; 
}

источник

2015-02-21 13:59:20

Кнопка Android Click Click In Fragment (Crash)

ответ

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