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PONullpointer Exceptions
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copied!<p>I have been following some android tutorials on the web. I tried copying his code to the best of my ability but whenever I run the application it crashes. I looked through the console and found it was a Nullpointer exception that caused it. The application is meant to play a sound and then close and then go to another layout. Here is my code, please tell me what I did wrong.</p> <pre><code> package com.greg.hello; import android.app.Activity; import android.content.Intent; import android.media.MediaPlayer; import android.os.Bundle; public class MainActivity extends Activity { MediaPlayer mpSplash; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.splash); MediaPlayer mpSplash = MediaPlayer.create(this, R.raw.explosion); mpSplash.start(); Thread logoTimer = new Thread(){ public void run(){ try{ int logoTimer=0; while(logoTimer<8000){ sleep(100); logoTimer=logoTimer+100; } startActivity(new Intent("com.greg.hello.CLEARSCREEN")); } catch (InterruptedException e) { // TODO Auto-generated catch block setContentView(R.layout.tutorial1); e.printStackTrace(); } finally{ finish(); } } }; logoTimer.start(); finish(); } @Override protected void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); mpSplash.release(); startActivity(new Intent("com.greg.hello.TUTORIALONE")); setContentView(R.layout.activity_main); } @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); mpSplash.pause(); setContentView(R.layout.activity_main); } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); mpSplash.start(); setContentView(R.layout.activity_main); } @Override protected void onStart() { // TODO Auto-generated method stub super.onStart(); setContentView(R.layout.activity_main); } @Override protected void onStop() { // TODO Auto-generated method stub super.onStop(); setContentView(R.layout.activity_main); } } </code></pre>

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