Activity causing Android Studio to crash on open

Whenever I try to open one of the activities in my app it causes a crash, it is only one of the four activities and this is whether I try to open it as the defaul or to open it via another activity.

Here is the XML for the activity in question

<?xml version="1.0" encoding="utf-8"?>  <RelativeLayout 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"      tools:context=".WelcomeScreen">        <TextView          android:id="@+id/textview"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_alignParentTop="true"          android:layout_centerHorizontal="true"          android:text="@string/my_medicare"          android:textSize="35dp" />        <TextView          android:id="@+id/textview2"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_below="@+id/textview"          android:layout_alignParentTop="true"          android:layout_centerHorizontal="true"          android:layout_marginTop="90dp"          android:text="@string/welcome"          android:textSize="25dp" />        <Button          android:id="@+id/b2"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_below="@+id/textview2"          android:layout_alignParentLeft="true"          android:layout_marginStart="50dp"          android:layout_marginLeft="50dp"          android:layout_marginTop="250dp"          android:text="@string/details" />        <Button          android:id="@+id/b3"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_below="@+id/textview2"          android:layout_alignParentRight="true"          android:layout_marginTop="250dp"          android:layout_marginRight="50dp"          android:text="@string/readings" />    </RelativeLayout>  

Here is the Java for it

package com.example.mymedicare;    import android.app.Activity;  import android.os.Bundle;  import android.content.Intent;  import android.view.View;  import android.widget.Button;        public class WelcomeScreen extends Activity {        Button b2, b3;        @Override      protected void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.activity_welcome_screen);            b2 = (Button) findViewById(R.id.button);          b2.setOnClickListener(new View.OnClickListener() {              @Override              public void onClick(View v) {                  openDetails();                }              });          setContentView(R.layout.activity_welcome_screen);            b3 = (Button) findViewById(R.id.button);          b3.setOnClickListener(new View.OnClickListener() {              @Override              public void onClick(View v) {                  openReadings();              }          });          }          public void openDetails() {          Intent intent = new Intent(this, Details.class);          startActivity(intent);      }        public void openReadings() {          Intent intent = new Intent(this, Readings.class);          startActivity(intent);      }  }  

And here is the manifest

<?xml version="1.0" encoding="utf-8"?>  <manifest xmlns:android="http://schemas.android.com/apk/res/android"      package="com.example.mymedicare">        <application          android:allowBackup="true"          android:icon="@mipmap/ic_launcher"          android:label="@string/app_name"          android:roundIcon="@mipmap/ic_launcher_round"          android:supportsRtl="true"          android:theme="@style/Theme.MyMediCare">          <activity android:name=".Readings"/>          <activity android:name=".Details"/>          <activity android:name=".WelcomeScreen"/>          <activity android:name=".MainActivity">              <intent-filter>                  <action android:name = "android.intent.action.MAIN" />                  <category android:name="android.intent.category.LAUNCHER" />              </intent-filter>          </activity>      </application>  </manifest>  

I'm still relatively new to android development and this is my first time posting here so please let me know if I missed out anything I'd need to include

https://stackoverflow.com/questions/67410932/activity-causing-android-studio-to-crash-on-open May 06, 2021 at 10:08AM