android - I can't change the textview text by pressing a button -


Hello all I get I 0 errors to change the dynamic TextView text in Android Studio but I am struggling when I program runs 'm testing but at that time I button crash program

CODE: 

  spreads public square MyFragment piece (Tekstwu TV button [] Bitian = new Button [30]; TextView TV; @Override Watch public onCreateView (LayoutInflater inflater, ViewGroup Tenor, bundled savedInstanceState) {// TODO Auto refer method stub myFragmentView = inflater.inflate (R.layout.fragmentlayout, container, false); Tv = (TextView) findViewById (R.id.textView1); (Int i = 0; i & lt; 30; i ++) {Bitian [i] = new button (getActivity ()); btn [i] .setText ( "1"); btn [i] .setLayoutParams (new LayoutParams ( Layoutpramskwrap_kantent, `Layoutpramskwrap_kantent)); 'button [e] Ksetvisibiliti (Wukvizibl) button [e] Ksetid (e); Linarlyutkadviav (button [e]) button [2] Ksetonkliklistener (BtnOnClickListener); Button.OnClickListener btnOnClickListener = new Button.OnClickListener () {@Override public void onClick (View v) {// TODO Auto-generated method stub if (v == btn [2]) {tv.setText (btn [2]. Gettext ()); }}}; It does not have all the parts of the code (it has 2 pieces which is one of them) but I can not share all the programs, but these are all about the parts. My problem. If you have something to say then please ask it. "Text" itemprop = "text"> 
 Advance   
 
 
 If textView1 is in your main activity again in your piece and not  (thanks to TextView) FindViewById (R.id.textView1);  will return to zero. If you want to set the text view to pieces in your main activity, then call it on a main activity by calling a public method. 
 
 Add a method like this to your main activity: 
 
  Public Zero Settypetext (String Text) {TextView TextView = (TextView) SearchVBIID (RIDTexView1 ); If (textview! = Null) textview.setText (text); }  
 
 Then call the method to change your piece: 
 
  button. Public Zero onClick (see v) {if (v == btn [2]) ((MainActivity) getActivity ()) setTextViewText (btn [2] .getText ()). }};  
 
 Change  main activity  on the name of your main activity class.

Comments

Post a Comment

Popular posts from this blog

python - Overriding the save method in Django ModelForm -

I'm having trouble overriding a ModelForm save method. I get this error I'm: Exception type: TypeErier Exception Value: Save () found an unexpected keyword argument 'committed' My intentions include a form 3 fields Submit several values ​​for, then create an object for each combination of those areas, and to save each object file models.py class collarsult type (models.Model): id = model. AutoField (db_column = 'icontact_result_code_type_id', primary_key = true) callResult = models.ForeignKey ( 'CallResult', db_column = 'icontact_result_code_id') campaign = models.ForeignKey ( 'campaign', db_column = 'icampaign_id') CALLTYPE = models.ForeignKey ( 'CALLTYPE', db_column = 'icall_type_id') agent = models.BooleanField (db_column = 'bagent', default = true) teamLeader = models.BooleanField (db_column = 'bTeamLeader', default = true) active = models.BooleanField (db_column = Django.form...
Read more

html - CSS autoheight, but fit content to height of div -

I have a div in which there are three children- div in the left and middle div: float: left while true: float: true because it is my layout Actually will spoil, I've used ClearFix Hack: .cf {zoom: 1; }. Cf: First,. Cf: {content: ""; Display: Table; }. Cf: After {clear: both; } It still works, but I want to be the right div an indicator. So it should fill 100% of the parent unit of height. How can I complete this? PS is the full code: & Lt; / Div & gt; & Lt; Div class = "mobile_content" & gt; & Lt; H5 & gt; {{Data.titel}} & lt; / H5> & Lt; Table & gt; & Lt; TR & gt; & Lt; Th & gt; Komponist: & lt; / Th & gt; & Lt; TD & gt; {{Data.komponist}} & lt; / TD & gt; & Lt; / TR & gt; & Lt; TR & gt; & Lt; Th & gt; Instrument: & lt; / Th & gt; & Lt; TD & gt; {{Data.instrumente}} & lt; / TD & gt; & Lt; / TR & gt;...
Read more

qt - How to prevent QAudioInput from automatically boosting the master volume to 100%? -

I have been trying to use Qt5 multimedia to record audio with QAudioInput, however, when I see If QAudioInput is started, it increases the master volume of my sound device to 100%. How can I prevent QAudioInput from changing the master volume? My current development platform is Linux with PalsAdio (with flat audio disabled). How can I use QAudioInput : QAudioDeviceInfo device_info = QAudioDeviceInfo :: defaultInputDevice (); QAudio format format; Format.setSampleRate (44100); Format.setChannelCount (1); Format.setSampleSize (16); Format.setCodec ("Audio / PCM"); Format.setSampleType (QAudioFormat :: SignedInt); Format.setByteOrder (QAudioFormat :: LittleEndian); Std :: cout & lt; & Lt; Device_info.deviceName (). ToUtf8 (). ConstData () & lt; & Lt; Std :: endl; QAudioInput * default_device = new QAudioInput (device_info, format); QIODevice * default_io_device = default_device-> Start (); a QAudioInput.setVolume () method is not you I ...
Read more