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    <p>In API level 9 (Gingerbread) and above, there's the <a href="http://developer.android.com/reference/android/content/pm/PackageInfo.html#firstInstallTime">PackageInfo.firstInstallTime</a> field, holding milliseconds since the epoch:</p> <pre><code>packageManager.getPackageInfo(packageName, 0).firstInstallTime; </code></pre> <p>I have the following code to use it if available, and fall back to the apk modification time:</p> <pre><code>// return install time from package manager, or apk file modification time, // or null if not found public Date getInstallTime( PackageManager packageManager, String packageName) { return firstNonNull( installTimeFromPackageManager(packageManager, packageName), apkUpdateTime(packageManager, packageName)); } private Date apkUpdateTime( PackageManager packageManager, String packageName) { try { ApplicationInfo info = packageManager.getApplicationInfo(packageName, 0); File apkFile = new File(info.sourceDir); return apkFile.exists() ? new Date(apkFile.lastModified()) : null; } catch (NameNotFoundException e) { return null; // package not found } } private Date installTimeFromPackageManager( PackageManager packageManager, String packageName) { // API level 9 and above have the "firstInstallTime" field. // Check for it with reflection and return if present. try { PackageInfo info = packageManager.getPackageInfo(packageName, 0); Field field = PackageInfo.class.getField("firstInstallTime"); long timestamp = field.getLong(info); return new Date(timestamp); } catch (NameNotFoundException e) { return null; // package not found } catch (IllegalAccessException e) { } catch (NoSuchFieldException e) { } catch (IllegalArgumentException e) { } catch (SecurityException e) { } // field wasn't found return null; } private Date firstNonNull(Date... dates) { for (Date date : dates) if (date != null) return date; return null; } </code></pre>
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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.

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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