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PO
 

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  1. PO
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    <p><strong>there are two mistakes in your code</strong></p> <p><strong>1.</strong> this <code>setButtonClickListener();</code> called once in your activity i.e. in <code>onCreate()</code> ! so you r button <code>OnClickListener()</code> will work once !</p> <p><strong>2.</strong> inside <code>toggleUi()</code> don't use <code>setContentView(R.layout.linear);</code></p> <p><strong>Solution for 1.</strong> </p> <p><strong>use following code in your</strong> <code>onCreate()</code></p> <pre><code>Button toggleButton = (Button) findViewById(R.id.toggleButton); toggleButton.setOnClickListener( new View.OnClickListener() { public void onClick(View v) { if (mPhoneIsSilent) { mAudioManager .setRingerMode(AudioManager.RINGER_MODE_NORMAL); mPhoneIsSilent = false; toggleUi(); } else { mAudioManager .setRingerMode(AudioManager.RINGER_MODE_SILENT); mPhoneIsSilent = true; toggleUi(); } } }); </code></pre> <p>and remove these two lines code from <code>onCreat()</code> </p> <pre><code>setButtonClickListener(); toggleUi(); </code></pre> <p>also remove your <code>private void setButtonClickListener()</code> completely !</p> <hr> <p><strong>Solution for 2.</strong></p> <p>your <code>toggleUi()</code> <strong>should be:</strong></p> <pre><code>private void toggleUi() { ImageView imageView = (ImageView) findViewById(R.id.phone_icon); Drawable newPhoneImage; if (mPhoneIsSilent) newPhoneImage = getResources().getDrawable(R.drawable.edit_btn); else newPhoneImage = getResources().getDrawable(R.drawable.ic_launcher); imageView.setImageDrawable(newPhoneImage); } </code></pre>
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    1. POHow do I change an image when clicking a button?
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    1. PTAnswer
    1. USTarsem Singh
    1. USTarsem Singh
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    1. COtarsem Thanks for responding. I tried it, unfortunately ... no difference. The app works but images dont change !!!!! Do you think its just the emulator?
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    2. CO@user2613577 try my updated answer which will surely help you !
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      1. USTarsem Singh
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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