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POButton and Button + CheckBox
 

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  1. POButton and Button + CheckBox
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    <p>Hello I do have a question about the Android CheckBox =)</p> <p>I do want to accomplish that if i press my reset button a TextView will clear its content. This TextView also writes the content into a file. </p> <p>If i tick my CheckBox and then press the Button the same thing happends but it should also delete the content from the file or just delete the file. -> to eliminate entries of older sessions which will be loaded otherwise.</p> <pre><code>//global CheckBox mCheckFileDelete; //setupWidgets() which is called by onCreate() mCheckFileDelete = (CheckBox)findViewById(R.id.cBdeleteFile); //onClick (View view) if (view.getId()==R.id.btn2reset &amp;&amp; mCheckFileDelete.isChecked()) { mMypoints.setText(null); mErgebnis.setText(null); setImage(5); mNotenHistory.setText(""); //Delete File File f = new File(getFilesDir(), FILENAME); f.delete(); } else { mMypoints.setText(null); mErgebnis.setText(null); setImage(5); mNotenHistory.setText("0"); } </code></pre> <p>Hope someone can give me hint. Is it really necessary to asign a seperate method to handle the whole isChecked() thing like the developer.android article shows? Besides that i do not now how to implement this in my case.</p> <p>Kind regards</p> <p>//EDIT regarding a Question MainActivity.onClick(View view)</p> <pre><code>Button berechne = (Button) findViewById(R.id.btn1calc); Button reset = (Button) findViewById(R.id.btn2reset); berechne.setOnClickListener(this); reset.setOnClickListener(this); @Override public void onClick(View view) { if (view.getId()==R.id.btn1calc) { //int ka_counter = 1; double mypoints = Double.valueOf(String.valueOf(mMypoints.getText())); String spinner_maxpoints_string = mMaxPoints_spin.getSelectedItem().toString(); double spinner_maxToDouble = Double.valueOf(String.valueOf(spinner_maxpoints_string)); double note = (6-(5*(mypoints/spinner_maxToDouble))); double note_rounded = Math.round(note*100)/100.0; String string_note = String.valueOf(note_rounded); mErgebnis.setText(string_note); if (string_note == null) { setImage(0); } else { if(note_rounded &gt;= 1.0 &amp;&amp; note_rounded &lt;= 1.4) { setImage(1); } else { if (note_rounded &gt;= 1.5 &amp;&amp; note_rounded &lt;= 1.9 ) { setImage(2); } else { if (note_rounded &gt;= 2.0 &amp;&amp; note_rounded &lt;= 2.5) { setImage(3); } else { if (note_rounded &gt;= 2.6 &amp;&amp; note_rounded &lt;= 3.2) { setImage(4); } else { if(note_rounded &gt;= 3.3 &amp;&amp; note_rounded &lt;= 4.0) { setImage(5); } else { if(note_rounded &gt;= 4.1 &amp;&amp; note_rounded &lt;= 4.9) { setImage(6); } else { if(note_rounded &gt;= 5.0 &amp;&amp; note_rounded &lt;= 6.0) { setImage(7); } } } } } } } } //ka_counter = ka_counter +1; //mNotenHistory.setText("KA " + ka_counter +": " + string_note + "\n" + mNotenHistory.getText().toString()); mNotenHistory.setText(string_note + "\n" + mNotenHistory.getText().toString()); try { FileOutputStream fo = openFileOutput(FILENAME, Context.MODE_APPEND); fo.write(string_note.getBytes()); fo.write("\n".getBytes()); fo.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } if (view.getId()==R.id.btn2reset) { if(mCheckFileDelete.isChecked()) { mMypoints.setText(null); mErgebnis.setText(null); setImage(0); mNotenHistory.setText(""); //Delete File File f = new File(getFilesDir(), FILENAME); f.delete(); } else { mMypoints.setText(null); mErgebnis.setText(null); setImage(0); mNotenHistory.setText("0"); } } } </code></pre>
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    1. PO
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    1. COI don't understand the problem. What is/isn't working about your code? If by " Is it really necessary to asign a seperate method to handle the whole isChecked() ..." you mean the `checkChagedListener` then no. That is only needed if you want something to happen when the state of the `CheckBox` changes
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      1. POButton and Button + CheckBox
      1. UScodeMagic
 

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