Databases
StackOverflow2013
Postsdbo
PONullPointerException and app crashes when using .getInt (Android)
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PONullPointerException and app crashes when using .getInt (Android)
    text
    copied!<p>I'm using an intent and getIntent on my Android app but it crashes in the emulator. Logcat indicates that my problem it's a NullPointerException but since yesterday I just can't find the solution for this problem.</p> <p>Here is my Logcat:</p> <pre><code>10-05 20:27:12.053: E/AndroidRuntime(246): Uncaught handler: thread main exiting due to uncaught exception 10-05 20:27:12.063: E/AndroidRuntime(246): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.Tonos/com.example.Tonos.TonosSet}: java.lang.NullPointerException 10-05 20:27:12.063: E/AndroidRuntime(246): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496) 10-05 20:27:12.063: E/AndroidRuntime(246): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512) 10-05 20:27:12.063: E/AndroidRuntime(246): at android.app.ActivityThread.access$2200(ActivityThread.java:119) 10-05 20:27:12.063: E/AndroidRuntime(246): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863) 10-05 20:27:12.063: E/AndroidRuntime(246): at android.os.Handler.dispatchMessage(Handler.java:99) 10-05 20:27:12.063: E/AndroidRuntime(246): at android.os.Looper.loop(Looper.java:123) 10-05 20:27:12.063: E/AndroidRuntime(246): at android.app.ActivityThread.main(ActivityThread.java:4363) 10-05 20:27:12.063: E/AndroidRuntime(246): at java.lang.reflect.Method.invokeNative(Native Method) 10-05 20:27:12.063: E/AndroidRuntime(246): at java.lang.reflect.Method.invoke(Method.java:521) 10-05 20:27:12.063: E/AndroidRuntime(246): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) 10-05 20:27:12.063: E/AndroidRuntime(246): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) 10-05 20:27:12.063: E/AndroidRuntime(246): at dalvik.system.NativeStart.main(Native Method) 10-05 20:27:12.063: E/AndroidRuntime(246): Caused by: java.lang.NullPointerException 10-05 20:27:12.063: E/AndroidRuntime(246): at com.example.Tonos.TonosSet.onCreate(TonosSet.java:21) 10-05 20:27:12.063: E/AndroidRuntime(246): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 10-05 20:27:12.063: E/AndroidRuntime(246): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459) 10-05 20:27:12.063: E/AndroidRuntime(246): ... 11 more </code></pre> <p>This is my "TonosSet.java":</p> <pre><code>package com.example.Tonos; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.widget.ImageView; import android.widget.TextView; public class TonosSet extends Activity { /** * @see android.app.Activity#onCreate(Bundle) */ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.tonos_set); Intent i = getIntent(); int position = i.getExtras().getInt("id"); ImageView imageView = (ImageView) findViewById(R.id.full_image_view2); TextView textView1 = (TextView)findViewById(R.id.namesong); TextView textView2 = (TextView)findViewById(R.id.artist); switch (position){ case 0: imageView.setImageResource(R.drawable.pico); textView1.setText("Tone1"); textView2.setText("Someone"); break; case 1: imageView.setImageResource(R.drawable.pict); textView1.setText("Tone2"); textView2.setText("Someone"); break; } } } </code></pre> <p>And here is the part of code that creates the Intent "i" (Tonos.java):</p> <pre><code>.... maListViewPerso.setAdapter(mSchedule); maListViewPerso.setOnItemClickListener(new OnItemClickListener() { @Override @SuppressWarnings("unchecked") public void onItemClick(AdapterView&lt;?&gt; a, View v, int position, long id){ HashMap&lt;String, String&gt; map = (HashMap&lt;String, String&gt;) maListViewPerso.getItemAtPosition(position); Toast.makeText(Tonos.this, "" + position, Toast.LENGTH_SHORT).show(); Intent tonosset = new Intent(Tonos.this, TonosSet.class); startActivity(tonosset); Intent i = new Intent(getApplicationContext(), TonosSet.class); i.putExtra("id", position); startActivity(i); } }); } } </code></pre> <p>Thanks a lot guys! =)</p>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload