title: unable to start activity componentinfo java.lang.nullpointerexception?
body: <p>I get these errors when i try to run my app on my phone.But does anyone know why im getting these errors? Thanks in advance!
  Here are the logcat errors what can be causing these errors?: </p>
  
  <pre><code>    01-12 12:35:06.299: D/dalvikvm(12107): GC_EXTERNAL_ALLOC freed 51K, 49% free 2793K/5379K, external 1596K/2108K, paused 42ms
      01-12 12:35:06.342: D/dalvikvm(12107): GC_EXTERNAL_ALLOC freed 1K, 49% free 2792K/5379K, external 2115K/2641K, paused 33ms
      01-12 12:35:09.792: D/dalvikvm(12107): GC_EXTERNAL_ALLOC freed 10K, 48% free 2826K/5379K, external 2449K/2722K, paused 37ms
      01-12 12:38:46.940: W/KeyCharacterMap(12107): Can't open keycharmap file
      01-12 12:38:46.944: W/KeyCharacterMap(12107): Error loading keycharmap file '/system/usr/keychars/cypress-touchkey.kcm.bin'. hw.keyboards.65537.devname='cypress-touchkey'
      01-12 12:38:46.944: W/KeyCharacterMap(12107): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
      01-12 12:38:58.823: D/dalvikvm(12206): GC_EXTERNAL_ALLOC freed 48K, 49% free 2793K/5379K, external 1596K/2108K, paused 67ms
      01-12 12:38:58.866: D/dalvikvm(12206): GC_EXTERNAL_ALLOC freed 1K, 49% free 2792K/5379K, external 2115K/2641K, paused 32ms
      01-12 12:39:00.679: D/AndroidRuntime(12206): Shutting down VM
      01-12 12:39:00.679: W/dalvikvm(12206): threadid=1: thread exiting with uncaught exception (group=0x40015578)
      01-12 12:39:00.706: E/AndroidRuntime(12206): FATAL EXCEPTION: main
      01-12 12:39:00.706: E/AndroidRuntime(12206): android.content.ActivityNotFoundException: Unable to find explicit activity class {android.app/android.app.activity3}; have you declared this activity in your AndroidManifest.xml?
  </code></pre>