title: Going to new android activity gets stuck on black screen
body: <p>I know this question has been asked many times before on here but I've tried all the solutions posted previously and none of them have worked for me. I have a very simple splash page, and I wanted onSplashPageClick to go to a new activity. In the emulator, it goes to a black screen and gets stuck indefinitely. I've checked that I have the activity I want to go to (ColorMatch.class) in the android manifests file as well as having setContentView under the onCreate.</p>
  
  <p>My Android Manifests:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="com.example.ali.colormatch"&gt;
  
  &lt;application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:supportsRtl="true"
      android:theme="@style/AppTheme"&gt;
      &lt;activity android:name=".MainActivity"&gt;
          &lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
  
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
      &lt;/activity&gt;
      &lt;activity android:name=".ColorMatch"&gt;&lt;/activity&gt;
  &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p>My MainActivity.java:</p>
  
  <pre><code>import android.content.Intent;
  import android.support.v7.app.AppCompatActivity;
  import android.os.Bundle;
  import android.view.View;
  
  public class MainActivity extends AppCompatActivity {
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.splash_page);
  }
  
  public void onSplashPageClick(View view){
      Intent intent = new Intent(this, ColorMatch.class);
      /* intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
      intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
      intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
      overridePendingTransition(0, 0); */
      startActivity(intent);
  }
  
  public void onQuitClick(View view){
      finish();
  }
  }
  </code></pre>
  
  <p>The activity I want to launch after splash page ColorMatch.java:</p>
  
  <pre><code>package com.example.ali.colormatch;
  
  import android.support.v7.app.AppCompatActivity;
  import android.os.Bundle;
  import android.view.View;
  import android.widget.Button;
  import android.widget.TextView;
  import android.os.Bundle;
  import android.app.Activity;
  import android.view.MotionEvent;
  import android.view.View;
  import android.view.View.OnTouchListener;
  import android.widget.ImageView;
  import android.widget.RelativeLayout;
  import android.widget.TextView;
  import java.util.Random;
  
  public class ColorMatch extends AppCompatActivity {
  
  int answer; //1 = red, 2 = blue, 3 = green, 4 = yellow
  TextView textView3, textView2;
  int count = 0;
  volatile boolean playing = true;
  private long timeThisFrame;
  private Button testButton;
  long fps;
  int score;
  int correctAnswer;
  boolean matchColor = true, matchText = false;
  long startFrameTime;
  boolean firstTime = true;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_color_match);
      textView3 = (TextView) findViewById(R.id.textView3);
      textView2 = (TextView) findViewById(R.id.textView2);
      /*testButton = (Button) findViewById(R.id.button);
  
      testButton.setOnClickListener(new View.OnTouchListener(){
          public void onClick(View v) {
             answer = 3;
          }
  
          });*/
      //run();
  }
  
  public void run() {
      while (playing) {
  
          startFrameTime = System.currentTimeMillis();
  
          if (firstTime){
              generateNewWord();
              firstTime = false;
          }
  
          if (answer == correctAnswer){
              score++;
              count++;
              generateNewWord();}
          else {
              quit();
          }
  
  
          if (count % 5 == 0){
                  if (matchColor) {
                      textView3.setText(getString(R.string.gameSetting2)); // might need to add context with this - check    http://stackoverflow.com/questions/10698945/reference-string-resource-from-code
                      matchColor = true;
                      matchText = false;
                  }
                  else if (matchText){
                      textView3.setText(getString(R.string.gameSetting1));
                      matchText = true;
                      matchColor = false;
                  }
              }
          }
  
          //draw();
          timeThisFrame = System.currentTimeMillis() - startFrameTime;
          if (timeThisFrame &gt; 0) {
              fps = 1000 / timeThisFrame;
          }
  
      }
  
  public void generateNewWord(){
  
      //randomly select between red, green, blue, yellow
      Random rand = new Random();
      int randomInt1 = rand.nextInt(4) + 1; // assigns randomInt a value between 1 - 4
      int randomInt2 = rand.nextInt(4) + 1;
  
      if (randomInt1 ==1){
          textView3.setText(R.string.Red);
      }
      else if (randomInt1 ==2){
          textView3.setText(R.string.Green);
      }
      else if (randomInt1 == 3){
          textView3.setText(R.string.Blue);
      }
      else if (randomInt1 == 4){
          textView3.setText(R.string.Yellow);
      }
  
  
      //randomly select hex codes between rgby
      if (randomInt2 ==1){
          textView3.setTextColor(0xffcc0000);
      }
      else if (randomInt2 ==2){
          textView3.setTextColor(0xff669900);
      }
      else if (randomInt2 == 3){
          textView3.setTextColor(0xff000080);
      }
      else if (randomInt2 == 4){
          textView3.setTextColor(0xffffff00);
      }
  
  
     if (matchColor) {
          correctAnswer = randomInt2;
      }
      else if(matchText){
          correctAnswer = randomInt1;
      }
  
  }
  public void quit(){
  
  }
  
  
  public void sendBlue(View view){
      answer = 2;
  }
  public void sendRed(View view){
      answer = 1;
  }
  public void sendYellow(View view){
      answer = 4;
  }
  public void sendGreen(View view){
      answer = 3;
  }
  </code></pre>
  
  <p>}</p>
  
  <p>My splash page xml file, which opens with MainActivity: </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="fill_parent"
  android:layout_height="fill_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"
  android:gravity="center"
  android:background="#d0cbd1"
  tools:context="com.example.ali.colormatch.MainActivity"
  android:weightSum="1"
  android:onClick="onSplashPageClick"
  
  android:baselineAligned="false"&gt;
  
  &lt;TextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:fontFamily="sans-serif-thin"
      android:text="Color Match"
      android:gravity="center"
      android:textColor="#440027"
      android:textSize="75dp"
      android:id="@+id/textView" /&gt;
  
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>XML file for ColorMatch.java - activity_color_match.xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  
  xmlns:tools="http://schemas.android.com/tools"
  android:id="@+id/activity_color_match"
  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.ali.colormatch.ColorMatch"&gt;
  
  &lt;TextView
  
      android:text="@string/matchText"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/textView3"
      android:textAppearance="@style/TextAppearance.AppCompat.Body2"
      android:layout_alignParentTop="true"
      android:layout_centerHorizontal="true" /&gt;
  
  &lt;TextView
      android:text="@string/mainColor"
      android:id="@+id/textView2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:gravity="center_horizontal"
      android:textColor="@android:color/background_dark"
      android:textSize="100dp"
      android:layout_marginBottom="104dp"
      android:textAppearance="@style/TextAppearance.AppCompat.Display3"
      android:layout_above="@+id/button3"
      android:layout_centerHorizontal="true" /&gt;
  
  &lt;Button
      android:layout_width="150dp"
      android:layout_height="60dp"
      android:id="@+id/button"
      android:background="#000080"
      android:onClick="sendBlue"
      android:layout_alignParentBottom="true"
      android:layout_alignParentLeft="true"
      android:layout_alignParentStart="true" /&gt;
  
  &lt;Button
      android:layout_height="60dp"
      android:id="@+id/button2"
      android:background="@color/yellow"
      android:elevation="0dp"
      android:layout_width="150dp"
      android:onClick="sendYellow"
      android:layout_alignParentBottom="true"
      android:layout_alignParentRight="true"
      android:layout_alignParentEnd="true" /&gt;
  
  &lt;Button
      android:layout_width="150dp"
      android:layout_height="60dp"
      android:id="@+id/button3"
      android:background="@android:color/holo_red_dark"
      android:onClick="sendRed"
      android:layout_above="@+id/button"
      android:layout_alignParentLeft="true"
      android:layout_alignParentStart="true"
      android:layout_marginBottom="19dp" /&gt;
  
  &lt;Button
      android:layout_width="150dp"
      android:layout_height="60dp"
      android:id="@+id/button4"
      android:background="@android:color/holo_green_dark"
      android:onClick="sendGreen"
      android:layout_alignParentRight="true"
      android:layout_alignParentEnd="true"
      android:layout_alignBottom="@+id/button3" /&gt;
  
  
  &lt;/RelativeLayout&gt;
  </code></pre>