I am new to android.I am getting the following error. I have looked into the same questions and have applied the answers to my code. But I am still getting the same error.
05-28 09:30:12.800 2016-2016/com.example.yatisawhney.fragmentdemo E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.yatisawhney.fragmentdemo, PID: 2016 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.yatisawhney.fragmentdemo/com.example.yatisawhney.fragmentdemo.MainActivity}: android.view.InflateException: Binary XML file line #21: Error inflating class fragment at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) at android.app.ActivityThread.access$800(ActivityThread.java:135) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5017) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) at dalvik.system.NativeStart.main(Native Method) Caused by: android.view.InflateException: Binary XML file line #21: Error inflating class fragment at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:714) at android.view.LayoutInflater.rInflate(LayoutInflater.java:756) at android.view.LayoutInflater.inflate(LayoutInflater.java:492) at android.view.LayoutInflater.inflate(LayoutInflater.java:397) at android.view.LayoutInflater.inflate(LayoutInflater.java:353) at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:276) at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:136) at com.example.yatisawhney.fragmentdemo.MainActivity.onCreate(MainActivity.java:13) at android.app.Activity.performCreate(Activity.java:5231) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) at android.app.ActivityThread.access$800(ActivityThread.java:135) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5017) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) at dalvik.system.NativeStart.main(Native Method) Caused by: java.lang.IllegalStateException: Fragment com.example.yatisawhney.fragmentdemo.BottomFragment did not create a view. at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2319) at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:120) at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:357) at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31) at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:80) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:690) at android.view.LayoutInflater.rInflate(LayoutInflater.java:756) at android.view.LayoutInflater.inflate(LayoutInflater.java:492) at android.view.LayoutInflater.inflate(LayoutInflater.java:397) at android.view.LayoutInflater.inflate(LayoutInflater.java:353) at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:276) at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:136) at com.example.yatisawhney.fragmentdemo.MainActivity.onCreate(MainActivity.java:13) at android.app.Activity.performCreate(Activity.java:5231) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) at android.app.ActivityThread.access$800(ActivityThread.java:135) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:136) at android.app.ActivityThread.main(ActivityThread.java:5017) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) at dalvik.system.NativeStart.main(Native Method)
The following are my java 3 files
MainActivity.java
package com.example.yatisawhney.fragmentdemo;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity implements TopFragment.ActivityCommunicator {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public void changeText(String a, String b) {
BottomFragment bf = (BottomFragment)getSupportFragmentManager().findFragmentById(R.id.fragment2);
bf.setMeme(a,b);
}
}
Bottom Fragment
package com.example.yatisawhney.fragmentdemo;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
/**
* Created by yatisawhney on 28/05/16.
*/
public class BottomFragment extends Fragment {
private static TextView top ;
private static TextView bottom;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View bottom = inflater.inflate(R.layout.bottom_section ,container, false);
top = (TextView)bottom.findViewById(R.id.textView);
bottom=(TextView)bottom.findViewById(R.id.textView2);
return bottom;
}
public void setMeme(String a , String b){
top.setText(a);
bottom.setText(b);
}
}
Top Fragment
package com.example.yatisawhney.fragmentdemo;
import android.app.Activity;
import android.os.Bundle;
import android.support.annotation.Nullable;
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.EditText;
/**
* Created by yatisawhney on 28/05/16.
*/
public class TopFragment extends Fragment{
private static EditText top;
private static EditText bottom;
ActivityCommunicator communicator;
public interface ActivityCommunicator{
public void changeText(String a , String b);
}
private void changeText(){
communicator.changeText(top.getText().toString() , bottom.getText().toString());
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
communicator = (ActivityCommunicator) activity;
}catch(Exception e){
e.printStackTrace();
}
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View top_view = inflater.inflate(R.layout.top_section , container , false);
top=(EditText)top_view.findViewById(R.id.yates_text);
bottom=(EditText)top_view.findViewById(R.id.yates_another_text);
Button button = (Button)top_view.findViewById(R.id.yates_button);
button.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
changeText();
}
}
);
return top_view;
}
}
activity_main.xml
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.yatisawhney.fragmentdemo.MainActivity">
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:name="com.example.yatisawhney.fragmentdemo.TopFragment"
android:id="@+id/fragment"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
tools:layout="@layout/top_section" />
android:layout_height="300dp"
android:name="com.example.yatisawhney.fragmentdemo.BottomFragment"
android:id="@+id/fragment2"
tools:layout="@layout/bottom_section"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
Answer
Finally I got the answer to my question.
onCreate of the Fragment life cycle might be called during the onCreate of the Activity life cycle. But this not the case all the times
Therefore, just to be on safer side if you wish to access the views in fragment do it inside onActivityCreated() method. This gives you the confirmation that the activity has been created and View hierarchy has been loaded into the memory. :)
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