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POAccessing data/app fails despite granted su permissions
 

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  1. POAccessing data/app fails despite granted su permissions
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    <p>Currently I am trying to get a quick overview of all installed apps on my phone by creating a ListView based on a string array consisting of all files contained within the data/app &amp; system/app directories:</p> <p>My code is as follows:</p> <pre><code>public void onCreate(Bundle icicle) { super.onCreate(icicle); Process p; try { // Preform su to get root privledges p = Runtime.getRuntime().exec("su"); // Attempt to write a file to a root-only DataOutputStream os = new DataOutputStream(p.getOutputStream()); os.writeBytes("echo \"Do I have root?\" &gt;/system/sd/temporary.txt\n"); // Close the terminal os.writeBytes("exit\n"); os.flush(); try { p.waitFor(); if (p.exitValue() != 255) { File dir = new File("./system/app"); File dir2 = new File("./data/app"); String[] values = this.both(dir.list(), dir2.list()); ArrayAdapter&lt;String&gt; adapter = new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_list_item_1, values); setListAdapter(adapter); } else { Toast.makeText(this, "not root", Toast.LENGTH_LONG).show(); } } catch (InterruptedException e) { Toast.makeText(this, "not root", Toast.LENGTH_LONG).show(); } } catch (IOException e) { Toast.makeText(this, "not root", Toast.LENGTH_LONG).show(); } </code></pre> <p>}</p> <p>(taken from <a href="http://www.stealthcopter.com/blog/2010/01/android-requesting-root-access-in-your-app/" rel="nofollow">http://www.stealthcopter.com/blog/2010/01/android-requesting-root-access-in-your-app/</a>)</p> <p>The both method looks as follows:</p> <pre><code> private String[] both(String[] first, String[] second) { List&lt;String&gt; both = new ArrayList&lt;String&gt;(first.length + second.length); Collections.addAll(both, first); Collections.addAll(both, second); return both.toArray(new String[both.size()]); } </code></pre> <p>However, my application keeps crashing. By removing the respective part of the code I was able to find out the reason is indeed the "new File("./data/app");" part.</p>
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    1. COyou can easily get this info using packagemanager rather than listing the apps from directories
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    2. COThanks, I'll have a look at the respective API. Nevertheless I would like to have a solution to my problem.
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