ERROR findViewById ListView fragment

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ERROR findViewById ListView fragment

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#1 by (1 votes)

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Hello, I have a problem that I can

08-04 19:59:25.765: D/skia(23307): 08-04 19:59:25.775: D/skia(23307): 08-04 19:59:25.805: I/PersonaManager(23307): 08-04 19:59:25.845: I/PersonaManager(23307): 08-04 19:59:25.855: D/skia(23307): 08-04 19:59:25.875: E/MoreInfoHPW_ViewGroup(23307): 08-04 19:59:25.895: D/skia(23307): 08-04 19:59:25.895: I/PersonaManager(23307): 08-04 19:59:26.125: D/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307): 08-04 19:59:26.145: E/AndroidRuntime(23307):

This is Java: not solve, I created a list view but when I call it in Java (it has an arrow below) it results in an error when testing the application, this is the error: GFXPNG PNG bitmap created width:72 height:72 bitmap id is 270 GFXPNG PNG bitmap created width:144 height:144 bitmap id is 271 getPersonaService() name persona_policy getPersonaService() name persona_policy GFXPNG PNG bitmap created width:48 height:48 bitmap id is 272 Parent view is not a TextView GFXPNG PNG bitmap created width:144 height:144 bitmap id is 273 getPersonaService() name persona_policy Shutting down VM FATAL EXCEPTION: main Process: com.sapires.Pizza, PID: 23307 java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference at com.sapires.Joes.Ementa.onCreateView(Ementa.java:46) at android.support.v4.app.Fragment.performCreateView(Fragment.java:1504) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:942) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1121) at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682) at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1484) at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:482) at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141) at android.support.v4.view.ViewPager.populate(ViewPager.java:1073) at android.support.v4.view.ViewPager.populate(ViewPager.java:919) at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1441) at android.view.View.measure(View.java:17478) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5364) at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) at android.view.View.measure(View.java:17478) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5364) at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:412) at android.view.View.measure(View.java:17478) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5364) at android.widget.FrameLayout.onMeasure(FrameLayout.java:310) at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2548) at android.view.View.measure(View.java:17478) at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2262) at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1391) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1590) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1249) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6585) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:803) at android.view.Choreographer.doCallbacks(Choreographer.java:603) at android.view.Choreographer.doFrame(Choreographer.java:573) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:789) at android.os.Handler.handleCallback(Handler.java:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5579) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)

    package com.sapires.Joes;

import android.support.v4.app.Fragment;
import com.sapires.Pizza.R;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.content.res.Resources;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class Ementa extends Fragment {

    String[] titulos;
    String[] descricoes;
    int[] images = { R.drawable.um, R.drawable.dois, R.drawable.tres,
            R.drawable.quatro };

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

        View android = inflater.inflate(R.layout.ementa_2, container, false);

        Resources res = getResources();
        titulos = res.getStringArray(R.array.titulos);
        descricoes = res.getStringArray(R.array.descricoes);

    ->  ListView list = (ListView) getView().findViewById(R.id.listView1);

        return android;
    }

}

class VivzAdapter extends ArrayAdapter<String>{

    VivzAdapter(Context c, String[] titulos){
        super(c,R.layout.ementa_2, R.id.textView1, titulos);
    }

}

This is the layout:

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#5B92E5" >

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="130dp"
        android:layout_height="96dp"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_margin="10dp"
        android:src="@drawable/um" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignTop="@+id/imageView"
        android:layout_margin="10dp"
        android:layout_toRightOf="@+id/imageView"
        android:text="Large Text"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:layout_margin="10dp"
        android:layout_toRightOf="@+id/imageView"
        android:text="Medium Text"
        android:textAppearance="?android:attr/textAppearanceMedium" />

</RelativeLayout>

android eclipse listview android-fragment

asked by anonymous 04.08.2014 / 21:05

1 answer

Importing the contents of a div from a site into my application Show a div and hide another in Hover

score 1 · Accepted Answer

You've already inflated your view in onCreateView , but the method has not yet returned the inflated view. Then the getView() method will return null because there is still no view to return. This is why NullPointerException occurs. You, instead, can directly use the instance of your inflated view in onCreateView .

Replace the line:

ListView list = (ListView) getView().findViewById(R.id.listView1);

by:

ListView list = (ListView) android.findViewById(R.id.listView1);

Or you can use the onViewCreated method for this:

@Override
public void onViewCreated(View view, Bundle savedInstanceState){
     ListView list = (ListView) view.findViewById(R.id.listView1);
}

I hope this solves the problem!