0
note the error message!
2020-01-03 16:37:48.091 27513-27513/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.resource.listfragment, PID: 27513
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.resource.listfragment/com.resource.listfragment.MainActivity}: android.view.InflateException: Binary XML file line #9 in com.resource.listfragment:layout/activity_main: Binary XML file line #9 in com.resource.listfragment:layout/activity_main: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3270)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Caused by: android.view.InflateException: Binary XML file line #9 in com.resource.listfragment:layout/activity_main: Binary XML file line #9 in com.resource.listfragment:layout/activity_main: Error inflating class fragment
Caused by: android.view.InflateException: Binary XML file line #9 in com.resource.listfragment:layout/activity_main: Error inflating class fragment
Caused by: android.app.Fragment$InstantiationException: Trying to instantiate a class com.resource.listfragment.ListProdutosFragments that is not a Fragment
at android.app.Fragment.instantiate(Fragment.java:538)
at android.app.FragmentContainer.instantiate(FragmentContainer.java:53)
at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3553)
at android.app.FragmentController.onCreateView(FragmentController.java:104)
at android.app.Activity.onCreateView(Activity.java:6948)
at android.view.LayoutInflater.tryCreateView(LayoutInflater.java:1069)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:997)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:961)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:1123)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:1084)
at android.view.LayoutInflater.inflate(LayoutInflater.java:682)
at android.view.LayoutInflater.inflate(LayoutInflater.java:534)
at android.view.LayoutInflater.inflate(LayoutInflater.java:481)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:438)
at android.app.Activity.setContentView(Activity.java:3324)
at com.resource.listfragment.MainActivity.onCreate(MainActivity.java:19)
at android.app.Activity.performCreate(Activity.java:7802)
at android.app.Activity.performCreate(Activity.java:7791)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
2020-01-03 16:37:48.091 27513-27513/? E/AndroidRuntime: Caused by: java.lang.ClassCastException
... 31 more
2020-01-03 16:37:48.110 27513-27513/? I/Process: Sending signal. PID: 27513 SIG: 9
Informs that the error is in this class.
package com.resource.listfragment;
import android.app.Activity;
import android.os.Bundle;
import java.text.NumberFormat;
import java.util.Locale;
public class MainActivity extends Activity implements ListProdutosFragments.OnItemClick {
private static final NumberFormat nf = NumberFormat.getCurrencyInstance(new Locale("pt", "BR"));
private DescProdutosFragments textFrag;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textFrag = (DescProdutosFragments) getFragmentManager().findFragmentById(R.id.frag_text);
}
@Override
public void onClick(Alimento alimento) {
textFrag.setText(String.format("O preço do %s é %s", alimento.getNome(), nf.format(alimento.getPreco())));
}
}
More precisely on that line.
setContentView(R.layout.activity_main);
This is my XML file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
android:padding="16dp" >
<fragment
android:id="@+id/frag_list"
android:name="com.resource.listfragment.ListProdutosFragments"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="3"
tools:layout="@android:layout/simple_list_item_1" />
<fragment
android:id="@+id/frag_text"
android:name="com.resource.listfragment.DescProdutosFragments"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
tools:layout="@layout/fragment_test" />
</LinearLayout>
What would be the suggestion to correct the problem?
Activity xml is poorly formed.
– DaviAragao
I just posted my xml @Daviaragao could take a look at?
– wladyband
Trying to instantiate a class com.resource.listfragment.ListProdutosFragments that is not a Fragment-- The error is stating that the classListProdutosFragmentsis not aFragment– André Ribeiro
Our guy, you managed to help me, thank you very much, I put the wrong import. thanks even @Andréribeiro
– wladyband
i had put this androidx.fragment.app.Listfragment import and it was actually supposed to be this android.app.Listfragment import;
– wladyband
Don’t forget to add an answer explaining what the problem was and how you solved it. That way whoever falls here with the same mistake will know what it is and how to solve (it is clearer than leaving in the comments).
– André Ribeiro