Кнопка Android не работает в диалоговом окне действий

Question

Я создал действие с виджетами EditText и Button и сделал его для показа в виде диалогового окна. Его показ довольно хорошо, когда его открытым, но всякий раз, когда я установить onClickListener на кнопке внутри этой деятельности (диалог одного), активность обыкновению открыт на все и и приложении расправляется с ошибкой ниже:

05-05 12:33:26.717 2998-2998/org.ufiministries.app E/AndroidRuntime: FATAL EXCEPTION: main 
                   Process: org.ufiministries.app, PID: 2998 
                   java.lang.RuntimeException: Unable to start activity ComponentInfo{org.ufiministries.app/org.ufiministries.app.PostPrayerCommentActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference 
                    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416) 
                    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
                    at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
                    at android.os.Handler.dispatchMessage(Handler.java:102) 
                    at android.os.Looper.loop(Looper.java:148) 
                    at android.app.ActivityThread.main(ActivityThread.java:5417) 
                    at java.lang.reflect.Method.invoke(Native Method) 
                    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
                    Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListener(android.view.View$OnClickListener)' on a null object reference 
                    at org.ufiministries.app.PostPrayerCommentActivity.onCreate(PostPrayerCommentActivity.java:36) 
                    at android.app.Activity.performCreate(Activity.java:6237) 
                    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) 
                    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) 
                    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)  
                    at android.app.ActivityThread.-wrap11(ActivityThread.java)  
                    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)  
                    at android.os.Handler.dispatchMessage(Handler.java:102)  
                    at android.os.Looper.loop(Looper.java:148)  
                    at android.app.ActivityThread.main(ActivityThread.java:5417)  
                    at java.lang.reflect.Method.invoke(Native Method)  
                    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  
                    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)  

Пожалуйста, помогите , Если я удалить ТНТ button.setOnClickListener диалоговое окно откроется

Код Активность:

package org.ufiministries.app; 

import android.content.Intent; 
import android.support.v7.app.AppCompatActivity; 
import android.support.v7.widget.Toolbar; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Toast; 
import android.support.v7.app.AppCompatDialog; 

public class PostPrayerCommentActivity extends AppCompatActivity implements View.OnClickListener { 

private Toolbar toolbar; 
private Button btnComment; 
private EditText txtPrayer; 
private String objectId, requestor, userId; 
private String sendPrayerText; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_post_comment); 

    Intent prayerComment = getIntent(); 
    objectId = prayerComment.getStringExtra("objectId"); 
    requestor = prayerComment.getStringExtra("requestor"); 
    //userId = prayerComment.getStringExtra("userId"); 

    btnComment = (Button) findViewById(R.id.btnSendPrayer); 
    txtPrayer = (EditText) findViewById(R.id.prayerTxt); 
    this.btnComment.setOnClickListener(this); 
    toolbar = (Toolbar) findViewById(R.id.toolbar); 
    setSupportActionBar(toolbar); 
    setTitle("Prayer for: " + requestor); 

} 


@Override 
public void onClick(View v) { 
    switch (v.getId()) { 
     case R.id.btnSendPrayer: 
      sendPrayerText = txtPrayer.getText().toString(); 
      break; 
    } 
} 

}

XML код:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context=".PostPrayerCommentActivity" 
xmlns:app1="http://schemas.android.com/apk/res/org.ufiministries.app"> 

<LinearLayout 
    android:id="@+id/linear" 
    android:layout_height="wrap_content" 
    android:layout_width="match_parent" 
    android:orientation="vertical"> 

    <include 
     android:id="@+id/toolbar" 
     layout="@layout/tool_bar" /> 
</LinearLayout> 

<LinearLayout 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:padding="@dimen/activity_horizontal_margin" 
    android:layout_below="@+id/linear" 
    android:orientation="vertical"> 

    <TextView 
     android:id="@+id/prayer_request_article_content" 
     android:layout_width="wrap_content" 
     android:layout_centerHorizontal="true" 
     android:text="@string/testimonialText" 
     android:lines="3" 
     android:layout_height="wrap_content" /> 

    <android.support.design.widget.TextInputLayout 
     android:id="@+id/phoneLayout" 
     android:layout_below="@+id/headerTxtPrayerRequest" 
     android:layout_width="match_parent" 
     android:layout_marginTop="@dimen/text_large_padding" 
     app:counterEnabled="true" 
     app:counterMaxLength="140" 
     app:hintAnimationEnabled="true" 
     android:layout_height="wrap_content"> 

     <EditText 
      android:id="@+id/prayerTxt" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:layout_weight="1" 
      android:hint="Enter prayer" 
      android:minLines="5" 
      style="@style/Widget.AppCompat.EditText" 
      android:inputType="textMultiLine"> 

      <requestFocus /> 
     </EditText> 

    </android.support.design.widget.TextInputLayout> 

    <Button 
     android:id="@+id/prayer_comment_btn" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_below="@+id/prayer_request_article_date" 
     android:layout_gravity="center_horizontal" 
     android:paddingRight="48dp" 
     android:paddingLeft="48dp" 
     android:layout_marginTop="@dimen/text_large_padding" 
     android:background="@color/colorPrimary" 
     style="@style/ParseLoginUI.Button" 
     android:text="Send Prayer" /> 

</LinearLayout> 

Answer 1

Изменить этот

btnComment = (Button) findViewById(R.id.btnSendPrayer); 

Для

btnComment = (Button) findViewById(R.id.prayer_comment_btn);