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    <p>Google finally realized the need of generating unique IDs for programmatically created views...</p> <p>From API level 17 and above, you can call </p> <p><a href="http://developer.android.com/reference/android/view/View.html#generateViewId%28%29" rel="noreferrer">View.generateViewId()</a></p> <p>Then use <a href="http://developer.android.com/reference/android/view/View.html#setId(int)" rel="noreferrer">View.setId(int)</a>.</p> <p>In case you need it for targets lower than level 17, here is its internal implementation in View.java you can use directly in your project, put it in your util class or somewhere:</p> <pre><code>private static final AtomicInteger sNextGeneratedId = new AtomicInteger(1); /** * Generate a value suitable for use in {@link #setId(int)}. * This value will not collide with ID values generated at build time by aapt for R.id. * * @return a generated ID value */ public static int generateViewId() { for (;;) { final int result = sNextGeneratedId.get(); // aapt-generated IDs have the high byte nonzero; clamp to the range under that. int newValue = result + 1; if (newValue &gt; 0x00FFFFFF) newValue = 1; // Roll over to 1, not 0. if (sNextGeneratedId.compareAndSet(result, newValue)) { return result; } } } </code></pre> <p>ID number larger than 0x00FFFFFF is reserved for static views defined in the /res xml files. (Most likely 0x7f****** from the R.java in my projects.) </p> <p>In your code, you can do: </p> <pre><code> if (Build.VERSION.SDK_INT &lt; Build.VERSION_CODES.JELLY_BEAN_MR1) { myView.setId(Utils.generateViewId()); } else { myView.setId(View.generateViewId()); } </code></pre>
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    1. POAndroid: View.setID(int id) programmatically - how to avoid ID conflicts?
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    1. COI put it in my source code because we want to support lower API levels. It is working but the infinite loop is not a good practice.
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    2. CO@SimonXinCheng Infinite loops is a common pattern used in non blocking algorithms. For example have a look at `AtomicInteger` methods implementation.
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    3. COWorks great! One note: based on my experiments, you must call setId() BEFORE you add the view to an existing layout, or else OnClickListener won't work properly.
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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.

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