title: Get WCDMA Signal Strength
body: <p>Hello I'm developing an Android app to monitor RSCP and ECNO for WCDMA network, I tried with the below code and there is no error during build but I'm getting error when I run the app on my phone (Samsung Galaxcy Core Prime).</p>
  
  <p>The Code :</p>
  
  <pre><code>    public class SignalStrength extends ActionBarActivity {
  
      TelephonyManager tManager;
      PhoneStateListener pListener;
      public static String LOG_TAG = "PhoneStateListener";
      public TextView rs = (TextView) findViewById(R.id.rscp);
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_signal_strength);
          tManager = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
          tManager.listen(pListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
  
  
      }
  
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate the menu; this adds items to the action bar if it is present.
          getMenuInflater().inflate(R.menu.menu_signal_strength, menu);
          return true;
      }
  
      public void onSignalStrengthsChanged(CellSignalStrengthWcdma signalStrength) {
          //super.onSignalStrengthsChanged(signalStrength);
          Log.i(LOG_TAG, "onSignalStrengthsChanged" + signalStrength);
          Log.i(LOG_TAG, "onSignalStrengthsChanged: getRscp" + signalStrength.getDbm());
          int ttt = signalStrength.getDbm();
          rs.setText(String.valueOf(ttt));
      }
  
      @Override
      public boolean onOptionsItemSelected(MenuItem item) {
          // Handle action bar item clicks here. The action bar will
          // automatically handle clicks on the Home/Up button, so long
          // as you specify a parent activity in AndroidManifest.xml.
          int id = item.getItemId();
  
          //noinspection SimplifiableIfStatement
          if (id == R.id.action_settings) {
              return true;
          }
  
          return super.onOptionsItemSelected(item);
      }
  } 
  </code></pre>
  
  <p>Is there any errors in the code ??</p>
  
  <p>please help me to solve this issue, thanks in advance.</p>
  
  <p>The new code: </p>
  
  <pre><code>protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_signal_strength);
      TextView textView = (TextView) findViewById(R.id.textView);
      TelephonyManager telephonyManager = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVICE);
      GsmCellLocation cellLocation = (GsmCellLocation) telephonyManager.getCellLocation();
      CellInfoWcdma cellinfoWcdma = null;
      if(cellLocation!=null){
          cellinfoWcdma = (CellInfoWcdma)telephonyManager.getAllCellInfo().get(0);
          CellSignalStrengthWcdma cellSignalStrengthWcdma = cellinfoWcdma.getCellSignalStrength();
          if(Build.VERSION.SDK_INT&gt;=18){
              cellSignalStrengthWcdma.getDbm();
              int ttt = cellSignalStrengthWcdma.getDbm();
              //int cid = cellLocation.getPsc();
              textView.setText(String.valueOf(ttt));
          }
  
      }
  }
  </code></pre>
  
  <p>The new debug log:</p>
  
  <pre><code>&gt; 03-15 22:13:21.710  15005-15005/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ Late-enabling CheckJNI 03-15 22:13:21.770 
  &gt; 15005-15005/com.asiacell.signalstrength D/ActivityThread﹕
  &gt; handleBindApplication:com.asiacell.signalstrength 03-15 22:13:21.800 
  &gt; 15005-15005/com.asiacell.signalstrength W/ApplicationPackageManager﹕
  &gt; getCSCPackageItemText() 03-15 22:13:21.800 
  &gt; 15005-15005/com.asiacell.signalstrength D/DisplayManager﹕
  &gt; DisplayManager() 03-15 22:13:21.830 
  &gt; 15005-15005/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.view.ViewGroup.onNestedScrollAccepted, referenced from
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
  &gt; 03-15 22:13:21.830  15005-15005/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 11348:
  &gt; Landroid/view/ViewGroup;.onNestedScrollAccepted
  &gt; (Landroid/view/View;Landroid/view/View;I)V 03-15 22:13:21.830 
  &gt; 15005-15005/com.asiacell.signalstrength D/dalvikvm﹕ VFY: replacing
  &gt; opcode 0x6f at 0x0000 03-15 22:13:21.830 
  &gt; 15005-15005/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.view.ViewGroup.onStopNestedScroll, referenced from
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
  &gt; 03-15 22:13:21.830  15005-15005/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 11354:
  &gt; Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
  &gt; 03-15 22:13:21.830  15005-15005/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000 03-15 22:13:21.830 
  &gt; 15005-15005/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll,
  &gt; referenced from method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled 03-15 22:13:21.830  15005-15005/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 9039:
  &gt; Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll
  &gt; ()V 03-15 22:13:21.830  15005-15005/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x000e 03-15 22:13:21.840 
  &gt; 15005-15005/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.content.res.TypedArray.getChangingConfigurations,
  &gt; referenced from method
  &gt; android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
  &gt; 03-15 22:13:21.840  15005-15005/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 364:
  &gt; Landroid/content/res/TypedArray;.getChangingConfigurations ()I 03-15
  &gt; 22:13:21.840  15005-15005/com.asiacell.signalstrength D/dalvikvm﹕ VFY:
  &gt; replacing opcode 0x6e at 0x0002 03-15 22:13:21.840 
  &gt; 15005-15005/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.content.res.TypedArray.getType, referenced from method
  &gt; android.support.v7.internal.widget.TintTypedArray.getType 03-15
  &gt; 22:13:21.840  15005-15005/com.asiacell.signalstrength W/dalvikvm﹕ VFY:
  &gt; unable to resolve virtual method 386:
  &gt; Landroid/content/res/TypedArray;.getType (I)I 03-15 22:13:21.840 
  &gt; 15005-15005/com.asiacell.signalstrength D/dalvikvm﹕ VFY: replacing
  &gt; opcode 0x6e at 0x0002 03-15 22:13:21.940 
  &gt; 15005-15005/com.asiacell.signalstrength D/OpenGLRenderer﹕ Enabling
  &gt; debug mode 0 03-15 22:13:21.990 
  &gt; 15005-15005/com.asiacell.signalstrength I/Timeline﹕ Timeline:
  &gt; Activity_idle id: android.os.BinderProxy@41eedeb8 time:95899927 03-15
  &gt; 22:14:02.329  15081-15081/com.asiacell.signalstrength D/dalvikvm﹕
  &gt; Late-enabling CheckJNI 03-15 22:14:02.379 
  &gt; 15081-15081/com.asiacell.signalstrength D/ActivityThread﹕
  &gt; handleBindApplication:com.asiacell.signalstrength 03-15 22:14:02.409 
  &gt; 15081-15081/com.asiacell.signalstrength W/ApplicationPackageManager﹕
  &gt; getCSCPackageItemText() 03-15 22:14:02.409 
  &gt; 15081-15081/com.asiacell.signalstrength D/DisplayManager﹕
  &gt; DisplayManager() 03-15 22:14:02.439 
  &gt; 15081-15081/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.view.ViewGroup.onNestedScrollAccepted, referenced from
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
  &gt; 03-15 22:14:02.439  15081-15081/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 11350:
  &gt; Landroid/view/ViewGroup;.onNestedScrollAccepted
  &gt; (Landroid/view/View;Landroid/view/View;I)V 03-15 22:14:02.439 
  &gt; 15081-15081/com.asiacell.signalstrength D/dalvikvm﹕ VFY: replacing
  &gt; opcode 0x6f at 0x0000 03-15 22:14:02.439 
  &gt; 15081-15081/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.view.ViewGroup.onStopNestedScroll, referenced from
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
  &gt; 03-15 22:14:02.439  15081-15081/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 11356:
  &gt; Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
  &gt; 03-15 22:14:02.439  15081-15081/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000 03-15 22:14:02.449 
  &gt; 15081-15081/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll,
  &gt; referenced from method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled 03-15 22:14:02.449  15081-15081/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 9039:
  &gt; Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll
  &gt; ()V 03-15 22:14:02.449  15081-15081/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x000e 03-15 22:14:02.449 
  &gt; 15081-15081/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.content.res.TypedArray.getChangingConfigurations,
  &gt; referenced from method
  &gt; android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
  &gt; 03-15 22:14:02.449  15081-15081/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 364:
  &gt; Landroid/content/res/TypedArray;.getChangingConfigurations ()I 03-15
  &gt; 22:14:02.449  15081-15081/com.asiacell.signalstrength D/dalvikvm﹕ VFY:
  &gt; replacing opcode 0x6e at 0x0002 03-15 22:14:02.449 
  &gt; 15081-15081/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.content.res.TypedArray.getType, referenced from method
  &gt; android.support.v7.internal.widget.TintTypedArray.getType 03-15
  &gt; 22:14:02.449  15081-15081/com.asiacell.signalstrength W/dalvikvm﹕ VFY:
  &gt; unable to resolve virtual method 386:
  &gt; Landroid/content/res/TypedArray;.getType (I)I 03-15 22:14:02.449 
  &gt; 15081-15081/com.asiacell.signalstrength D/dalvikvm﹕ VFY: replacing
  &gt; opcode 0x6e at 0x0002 03-15 22:14:02.499 
  &gt; 15081-15081/com.asiacell.signalstrength D/AndroidRuntime﹕ Shutting
  &gt; down VM 03-15 22:14:02.499  15081-15081/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception
  &gt; (group=0x416ebbc0) 03-15 22:14:02.509 
  &gt; 15081-15081/com.asiacell.signalstrength E/AndroidRuntime﹕ FATAL
  &gt; EXCEPTION: main
  &gt;     Process: com.asiacell.signalstrength, PID: 15081
  &gt;     java.lang.RuntimeException: Unable to start activity ComponentInfo{com.asiacell.signalstrength/com.asiacell.signalstrength.SignalStrength}:
  &gt; java.lang.NullPointerException
  &gt;             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2327)
  &gt;             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2378)
  &gt;             at android.app.ActivityThread.access$800(ActivityThread.java:155)
  &gt;             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244)
  &gt;             at android.os.Handler.dispatchMessage(Handler.java:102)
  &gt;             at android.os.Looper.loop(Looper.java:136)
  &gt;             at android.app.ActivityThread.main(ActivityThread.java:5433)
  &gt;             at java.lang.reflect.Method.invokeNative(Native Method)
  &gt;             at java.lang.reflect.Method.invoke(Method.java:515)
  &gt;             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
  &gt;             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
  &gt;             at dalvik.system.NativeStart.main(Native Method)
  &gt;      Caused by: java.lang.NullPointerException
  &gt;             at com.asiacell.signalstrength.SignalStrength.onCreate(SignalStrength.java:32)
  &gt;             at android.app.Activity.performCreate(Activity.java:5301)
  &gt;             at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
  &gt;             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2291)
  &gt;             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2378)
  &gt;             at android.app.ActivityThread.access$800(ActivityThread.java:155)
  &gt;             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244)
  &gt;             at android.os.Handler.dispatchMessage(Handler.java:102)
  &gt;             at android.os.Looper.loop(Looper.java:136)
  &gt;             at android.app.ActivityThread.main(ActivityThread.java:5433)
  &gt;             at java.lang.reflect.Method.invokeNative(Native Method)
  &gt;             at java.lang.reflect.Method.invoke(Method.java:515)
  &gt;             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
  &gt;             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
  &gt;             at dalvik.system.NativeStart.main(Native Method) 03-15 22:17:02.385  15297-15297/com.asiacell.signalstrength
  &gt; D/ActivityThread﹕ handleBindApplication:com.asiacell.signalstrength
  &gt; 03-15 22:17:02.415  15297-15297/com.asiacell.signalstrength
  &gt; W/ApplicationPackageManager﹕ getCSCPackageItemText() 03-15
  &gt; 22:17:02.425  15297-15297/com.asiacell.signalstrength
  &gt; D/DisplayManager﹕ DisplayManager() 03-15 22:17:02.455 
  &gt; 15297-15297/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.view.ViewGroup.onNestedScrollAccepted, referenced from
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
  &gt; 03-15 22:17:02.455  15297-15297/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 11348:
  &gt; Landroid/view/ViewGroup;.onNestedScrollAccepted
  &gt; (Landroid/view/View;Landroid/view/View;I)V 03-15 22:17:02.455 
  &gt; 15297-15297/com.asiacell.signalstrength D/dalvikvm﹕ VFY: replacing
  &gt; opcode 0x6f at 0x0000 03-15 22:17:02.455 
  &gt; 15297-15297/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.view.ViewGroup.onStopNestedScroll, referenced from
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
  &gt; 03-15 22:17:02.455  15297-15297/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 11354:
  &gt; Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
  &gt; 03-15 22:17:02.455  15297-15297/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000 03-15 22:17:02.465 
  &gt; 15297-15297/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll,
  &gt; referenced from method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled 03-15 22:17:02.465  15297-15297/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 9039:
  &gt; Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll
  &gt; ()V 03-15 22:17:02.465  15297-15297/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x000e 03-15 22:17:02.465 
  &gt; 15297-15297/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.content.res.TypedArray.getChangingConfigurations,
  &gt; referenced from method
  &gt; android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
  &gt; 03-15 22:17:02.465  15297-15297/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 364:
  &gt; Landroid/content/res/TypedArray;.getChangingConfigurations ()I 03-15
  &gt; 22:17:02.465  15297-15297/com.asiacell.signalstrength D/dalvikvm﹕ VFY:
  &gt; replacing opcode 0x6e at 0x0002 03-15 22:17:02.465 
  &gt; 15297-15297/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.content.res.TypedArray.getType, referenced from method
  &gt; android.support.v7.internal.widget.TintTypedArray.getType 03-15
  &gt; 22:17:02.465  15297-15297/com.asiacell.signalstrength W/dalvikvm﹕ VFY:
  &gt; unable to resolve virtual method 386:
  &gt; Landroid/content/res/TypedArray;.getType (I)I 03-15 22:17:02.465 
  &gt; 15297-15297/com.asiacell.signalstrength D/dalvikvm﹕ VFY: replacing
  &gt; opcode 0x6e at 0x0002 03-15 22:17:02.585 
  &gt; 15297-15297/com.asiacell.signalstrength D/OpenGLRenderer﹕ Enabling
  &gt; debug mode 0 03-15 22:17:02.645 
  &gt; 15297-15297/com.asiacell.signalstrength I/Timeline﹕ Timeline:
  &gt; Activity_idle id: android.os.BinderProxy@41ef2ad8 time:96120583 03-15
  &gt; 22:17:54.546  15370-15370/com.asiacell.signalstrength
  &gt; D/ActivityThread﹕ handleBindApplication:com.asiacell.signalstrength
  &gt; 03-15 22:17:54.576  15370-15370/com.asiacell.signalstrength
  &gt; W/ApplicationPackageManager﹕ getCSCPackageItemText() 03-15
  &gt; 22:17:54.576  15370-15370/com.asiacell.signalstrength
  &gt; D/DisplayManager﹕ DisplayManager() 03-15 22:17:54.606 
  &gt; 15370-15370/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.view.ViewGroup.onNestedScrollAccepted, referenced from
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
  &gt; 03-15 22:17:54.606  15370-15370/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 11348:
  &gt; Landroid/view/ViewGroup;.onNestedScrollAccepted
  &gt; (Landroid/view/View;Landroid/view/View;I)V 03-15 22:17:54.606 
  &gt; 15370-15370/com.asiacell.signalstrength D/dalvikvm﹕ VFY: replacing
  &gt; opcode 0x6f at 0x0000 03-15 22:17:54.606 
  &gt; 15370-15370/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.view.ViewGroup.onStopNestedScroll, referenced from
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
  &gt; 03-15 22:17:54.606  15370-15370/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 11354:
  &gt; Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
  &gt; 03-15 22:17:54.606  15370-15370/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000 03-15 22:17:54.606 
  &gt; 15370-15370/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll,
  &gt; referenced from method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled 03-15 22:17:54.606  15370-15370/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 9039:
  &gt; Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll
  &gt; ()V 03-15 22:17:54.606  15370-15370/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x000e 03-15 22:17:54.616 
  &gt; 15370-15370/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.content.res.TypedArray.getChangingConfigurations,
  &gt; referenced from method
  &gt; android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
  &gt; 03-15 22:17:54.616  15370-15370/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 364:
  &gt; Landroid/content/res/TypedArray;.getChangingConfigurations ()I 03-15
  &gt; 22:17:54.616  15370-15370/com.asiacell.signalstrength D/dalvikvm﹕ VFY:
  &gt; replacing opcode 0x6e at 0x0002 03-15 22:17:54.616 
  &gt; 15370-15370/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.content.res.TypedArray.getType, referenced from method
  &gt; android.support.v7.internal.widget.TintTypedArray.getType 03-15
  &gt; 22:17:54.616  15370-15370/com.asiacell.signalstrength W/dalvikvm﹕ VFY:
  &gt; unable to resolve virtual method 386:
  &gt; Landroid/content/res/TypedArray;.getType (I)I 03-15 22:17:54.616 
  &gt; 15370-15370/com.asiacell.signalstrength D/dalvikvm﹕ VFY: replacing
  &gt; opcode 0x6e at 0x0002 03-15 22:17:54.716 
  &gt; 15370-15370/com.asiacell.signalstrength D/OpenGLRenderer﹕ Enabling
  &gt; debug mode 0 03-15 22:17:54.766 
  &gt; 15370-15370/com.asiacell.signalstrength I/Timeline﹕ Timeline:
  &gt; Activity_idle id: android.os.BinderProxy@41ee7198 time:96172707 03-15
  &gt; 22:24:10.483  15519-15519/com.asiacell.signalstrength
  &gt; D/ActivityThread﹕ handleBindApplication:com.asiacell.signalstrength
  &gt; 03-15 22:24:10.513  15519-15519/com.asiacell.signalstrength
  &gt; W/ApplicationPackageManager﹕ getCSCPackageItemText() 03-15
  &gt; 22:24:10.513  15519-15519/com.asiacell.signalstrength
  &gt; D/DisplayManager﹕ DisplayManager() 03-15 22:24:10.543 
  &gt; 15519-15519/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.view.ViewGroup.onNestedScrollAccepted, referenced from
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
  &gt; 03-15 22:24:10.543  15519-15519/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 11350:
  &gt; Landroid/view/ViewGroup;.onNestedScrollAccepted
  &gt; (Landroid/view/View;Landroid/view/View;I)V 03-15 22:24:10.543 
  &gt; 15519-15519/com.asiacell.signalstrength D/dalvikvm﹕ VFY: replacing
  &gt; opcode 0x6f at 0x0000 03-15 22:24:10.543 
  &gt; 15519-15519/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.view.ViewGroup.onStopNestedScroll, referenced from
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
  &gt; 03-15 22:24:10.543  15519-15519/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 11356:
  &gt; Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
  &gt; 03-15 22:24:10.543  15519-15519/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ VFY: replacing opcode 0x6f at 0x0000 03-15 22:24:10.553 
  &gt; 15519-15519/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll,
  &gt; referenced from method
  &gt; android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled 03-15 22:24:10.553  15519-15519/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 9039:
  &gt; Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll
  &gt; ()V 03-15 22:24:10.553  15519-15519/com.asiacell.signalstrength
  &gt; D/dalvikvm﹕ VFY: replacing opcode 0x6e at 0x000e 03-15 22:24:10.553 
  &gt; 15519-15519/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.content.res.TypedArray.getChangingConfigurations,
  &gt; referenced from method
  &gt; android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
  &gt; 03-15 22:24:10.553  15519-15519/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ VFY: unable to resolve virtual method 364:
  &gt; Landroid/content/res/TypedArray;.getChangingConfigurations ()I 03-15
  &gt; 22:24:10.553  15519-15519/com.asiacell.signalstrength D/dalvikvm﹕ VFY:
  &gt; replacing opcode 0x6e at 0x0002 03-15 22:24:10.553 
  &gt; 15519-15519/com.asiacell.signalstrength I/dalvikvm﹕ Could not find
  &gt; method android.content.res.TypedArray.getType, referenced from method
  &gt; android.support.v7.internal.widget.TintTypedArray.getType 03-15
  &gt; 22:24:10.553  15519-15519/com.asiacell.signalstrength W/dalvikvm﹕ VFY:
  &gt; unable to resolve virtual method 386:
  &gt; Landroid/content/res/TypedArray;.getType (I)I 03-15 22:24:10.553 
  &gt; 15519-15519/com.asiacell.signalstrength D/dalvikvm﹕ VFY: replacing
  &gt; opcode 0x6e at 0x0002 03-15 22:24:10.613 
  &gt; 15519-15519/com.asiacell.signalstrength D/AndroidRuntime﹕ Shutting
  &gt; down VM 03-15 22:24:10.613  15519-15519/com.asiacell.signalstrength
  &gt; W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception
  &gt; (group=0x416ebbc0) 03-15 22:24:10.613 
  &gt; 15519-15519/com.asiacell.signalstrength E/AndroidRuntime﹕ FATAL
  &gt; EXCEPTION: main
  &gt;     Process: com.asiacell.signalstrength, PID: 15519
  &gt;     java.lang.RuntimeException: Unable to start activity ComponentInfo{com.asiacell.signalstrength/com.asiacell.signalstrength.SignalStrength}:
  &gt; java.lang.NullPointerException
  &gt;             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2327)
  &gt;             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2378)
  &gt;             at android.app.ActivityThread.access$800(ActivityThread.java:155)
  &gt;             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244)
  &gt;             at android.os.Handler.dispatchMessage(Handler.java:102)
  &gt;             at android.os.Looper.loop(Looper.java:136)
  &gt;             at android.app.ActivityThread.main(ActivityThread.java:5433)
  &gt;             at java.lang.reflect.Method.invokeNative(Native Method)
  &gt;             at java.lang.reflect.Method.invoke(Method.java:515)
  &gt;             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
  &gt;             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
  &gt;             at dalvik.system.NativeStart.main(Native Method)
  &gt;      Caused by: java.lang.NullPointerException
  &gt;             at com.asiacell.signalstrength.SignalStrength.onCreate(SignalStrength.java:32)
  &gt;             at android.app.Activity.performCreate(Activity.java:5301)
  &gt;             at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
  &gt;             at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2291)
  &gt;             at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2378)
  &gt;             at android.app.ActivityThread.access$800(ActivityThread.java:155)
  &gt;             at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244)
  &gt;             at android.os.Handler.dispatchMessage(Handler.java:102)
  &gt;             at android.os.Looper.loop(Looper.java:136)
  &gt;             at android.app.ActivityThread.main(ActivityThread.java:5433)
  &gt;             at java.lang.reflect.Method.invokeNative(Native Method)
  &gt;             at java.lang.reflect.Method.invoke(Method.java:515)
  &gt;             at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
  &gt;             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
  &gt;             at dalvik.system.NativeStart.main(Native Method)
  </code></pre>