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PONot passing text through activites in android
 

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  1. PONot passing text through activites in android
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    <p>I am trying to get the text from one activity (Second.class) and pass it to another activity(Third.class). The string im trying to get is a TextView of an airport code.</p> <p>This is the piece of code i think that is causing the problem </p> <pre><code> this.btnD.setOnClickListener(new OnClickListener() { public void onClick(View v) { Intent intent = new Intent(context, Thrid.class); tvTemp = (TextView)findViewById(R.id.tvReturn); Bundle tb = new Bundle(); String d = tvTemp.getText().toString(); tb.putString("destenation", d); intent.putExtra("basket", tb); startActivity(intent); } }); </code></pre> <p>And my third class </p> <pre><code> destenationV=(TextView)findViewById(R.id.tvDes); Intent i = getIntent();//MAking an intent called i Bundle basket = i.getBundleExtra("basket"); String desTv = basket.getString("destenation"); if(desTv.toString() == "SNN (IRL)"){ desTv = "IRELAND"; destenationV.append(desTv); } else if(desTv.toString()=="EWR (USA)"){ desTv = "UNITED STATES"; destenationV.append(desTv); } else if(desTv.toString()=="LHR (GRB))"){ desTv ="UNITED KINGDOM"; destenationV.append(desTv); } </code></pre> <p>This is my Log Cat when i run my app</p> <pre><code>04-30 18:19:02.222: E/Trace(1102): error opening trace file: No such file or directory (2) 04-30 18:19:03.082: D/gralloc_goldfish(1102): Emulator without GPU emulation detected. 04-30 18:19:28.912: D/dalvikvm(1102): GC_CONCURRENT freed 123K, 3% free 8295K/8519K, paused 79ms+100ms, total 290ms 04-30 18:19:31.622: D/AndroidRuntime(1102): Shutting down VM 04-30 18:19:31.642: W/dalvikvm(1102): threadid=1: thread exiting with uncaught exception (group=0x40a13300) 04-30 18:19:31.652: E/AndroidRuntime(1102): FATAL EXCEPTION: main 04-30 18:19:31.652: E/AndroidRuntime(1102): java.lang.NullPointerException 04-30 18:19:31.652: E/AndroidRuntime(1102): at com.example.assignment2.Second$3.onClick(Second.java:115) 04-30 18:19:31.652: E/AndroidRuntime(1102): at android.view.View.performClick(View.java:4084) 04-30 18:19:31.652: E/AndroidRuntime(1102): at android.view.View$PerformClick.run(View.java:16966) 04-30 18:19:31.652: E/AndroidRuntime(1102): at android.os.Handler.handleCallback(Handler.java:615) 04-30 18:19:31.652: E/AndroidRuntime(1102): at android.os.Handler.dispatchMessage(Handler.java:92) 04-30 18:19:31.652: E/AndroidRuntime(1102): at android.os.Looper.loop(Looper.java:137) 04-30 18:19:31.652: E/AndroidRuntime(1102): at android.app.ActivityThread.main(ActivityThread.java:4745) 04-30 18:19:31.652: E/AndroidRuntime(1102): at java.lang.reflect.Method.invokeNative(Native Method) 04-30 18:19:31.652: E/AndroidRuntime(1102): at java.lang.reflect.Method.invoke(Method.java:511) 04-30 18:19:31.652: E/AndroidRuntime(1102): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 04-30 18:19:31.652: E/AndroidRuntime(1102): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 04-30 18:19:31.652: E/AndroidRuntime(1102): at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>Eclipse shows no errors(other then in logCat). Thanks in advance</p> <p>My complete Second class</p> <pre><code> public class Second extends Activity { private TextView typeTv, departureTv,returnTv,departureDateTv,returnDateTv,noOfPassengersTv,tvReturnDateLbl, tvTemp; private RadioButton buttonR = null; private CheckBox cCB; private Button btnD, btnB; final Context context = this; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.second); typeTv = (TextView)findViewById(R.id.typeTv); departureTv = (TextView)findViewById(R.id.departureTv); returnTv = (TextView)findViewById(R.id.returnTv); departureDateTv= (TextView)findViewById(R.id.departureDateTv); returnDateTv= (TextView)findViewById(R.id.returneDateTv); noOfPassengersTv = (TextView)findViewById(R.id.noOfPassengersTv); buttonR = (RadioButton) findViewById(R.id.radioR); tvReturnDateLbl = (TextView)findViewById(R.id.tvReturnDateLbl); cCB = (CheckBox)findViewById(R.id.correctCB); btnD= (Button)findViewById(R.id.btnDecsion); btnB= (Button)findViewById(R.id.btnBack); Intent i = getIntent();//MAking an intent called i Bundle basket = i.getBundleExtra("basket"); String tTv = basket.getString("type"); String dTv = basket.getString("departureAir"); String rTv = basket.getString("destenationAir"); String dDTv = basket.getString("depDate"); int nOPTv = basket.getInt("numOfPass"); String rDTv = basket.getString("returnDate"); if(rDTv == ""||rDTv==null){ returnDateTv.setVisibility(View.GONE); tvReturnDateLbl.setVisibility(View.GONE); } else{ returnDateTv.setText(rDTv); } cCB.setOnCheckedChangeListener(new OnCheckedChangeListener() { public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if(isChecked){ btnD.setEnabled(true); } else{ btnD.setEnabled(false); } } }); typeTv.setText(tTv); departureTv.setText(dTv); returnTv.setText(rTv); departureDateTv.setText(dDTv); noOfPassengersTv.setText(""+nOPTv); this.btnB.setOnClickListener(new OnClickListener() { public void onClick(View v) { Intent intent = new Intent(context, MainActivity.class); startActivity(intent); } }); this.btnD.setOnClickListener(new OnClickListener() { public void onClick(View v) { Intent intent = new Intent(context, Thrid.class); tvTemp = (TextView)findViewById(R.id.tvReturn); Bundle tb = new Bundle(); String d = tvTemp.getText().toString(); tb.putString("destenation", d); intent.putExtra("basket", tb); startActivity(intent); } }); } </code></pre> <p>}</p>
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    1. USSean O'Riordan
    1. USSean O'Riordan
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    1. COWhat is line 115 of `Second.java`? You are accessing a null object on that line. My hunch is that `tvTemp` is null when you access it.
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      1. PONot passing text through activites in android
      1. USSteven Byle
    2. COline 115 of Second.java = String d = tvTemp.getText().toString();
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      1. PONot passing text through activites in android
      1. USSean O'Riordan
    3. COStill cant get it to work
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      1. PONot passing text through activites in android
      1. USSean O'Riordan
 

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