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    <p>launcher can only clear its own prefered settings for security issue.</p> <p>here is a work around:</p> <p>register a mockup activity in Manifest.xml:</p> <pre><code> &lt;activity android:name="MockupLauncher" android:enabled="false" android:exported="false" android:excludeFromRecents="true" android:launchMode="singleTask" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN"/&gt; &lt;category android:name="android.intent.category.HOME"/&gt; &lt;category android:name="android.intent.category.DEFAULT"/&gt; &lt;/intent-filter&gt; &lt;/activity&gt; </code></pre> <p>use "PackageManager.setComponentEnabledSetting" to trigger OS clear current prefered launcher:</p> <pre><code> private void resetPreferedLauncher() { PackageManager pm = mContext.getPackageManager(); ComponentName mockupComponent = new ComponentName(MockupLauncher.class.getPackage().getName(), MockupLauncher.class.getName()); pm.setComponentEnabledSetting(mockupComponent, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP); Intent startMain = new Intent(Intent.ACTION_MAIN); startMain.addCategory(Intent.CATEGORY_HOME); startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); mContext.startActivity(startMain); pm.setComponentEnabledSetting(mockupComponent, PackageManager.COMPONENT_ENABLED_STATE_DEFAULT, PackageManager.DONT_KILL_APP); // or //pm.setComponentEnabledSetting(mockupComponent, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP); } </code></pre> <p>that is how I make it! enjoy!</p>
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