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POHow to use getPackageManager?
 

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  1. POHow to use getPackageManager?
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    <p>In order to show installed applications on the Android emulator, I tried this code. It compiles successfully but doesn't work. What's wrong?</p> <pre><code>package pack.GetAllInstalledApplications; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.content.pm.PackageInfo; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.widget.ArrayAdapter; import android.widget.ListView; import android.widget.Toast; public class GetAllInstalledApplicationsExample extends Activity { public ArrayList &lt;PackageInfoStruct&gt; res = new ArrayList &lt;PackageInfoStruct&gt;(); public ListView list; public String app_labels[]; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); getPackages(); list = (ListView)findViewById(R.id.ListView01); try{ list.setAdapter(new ArrayAdapter&lt;String&gt; (this,android.R.layout.simple_dropdown_item_1line,app_labels)); }catch(Exception e){ System.out.println("Err ++&gt; " + e.getMessage()); Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show(); } } private ArrayList &lt;PackageInfoStruct&gt; getPackages() { ArrayList &lt;PackageInfoStruct&gt; apps = getInstalledApps(false); final int max = apps.size(); for (int i=0; i &lt; max; i++) { apps.get(i); } return apps; } private ArrayList &lt;PackageInfoStruct&gt; getInstalledApps(boolean getSysPackages) { List &lt;PackageInfo&gt; packs = getPackageManager().getInstalledPackages(0); try{ app_labels = new String[packs.size()]; }catch(Exception e){ Toast.makeText(getApplicationContext(),e.getMessage(),Toast.LENGTH_SHORT).show(); } for(int i=0;i &lt; packs.size();i++) { PackageInfo p = packs.get(i); if ((!getSysPackages) &amp;&amp; (p.versionName == null)) { continue ; } PackageInfoStruct newInfo = new PackageInfoStruct(); newInfo.appname = p.applicationInfo.loadLabel(getPackageManager()).toString(); newInfo.pname = p.packageName; newInfo.versionName = p.versionName; newInfo.versionCode = p.versionCode; newInfo.icon = p.applicationInfo.loadIcon(getPackageManager()); res.add(newInfo); app_labels[i] = newInfo.appname; } return res; } } class PackageInfoStruct { String appname = ""; String pname = ""; String versionName = ""; int versionCode = 0; Drawable icon; } </code></pre>
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    1. USMichael Mrozek
    1. USAngelika
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    1. COYou have to give us a little more info as to how it doesn't work. Does it just not display the packages? Does it crash? If so can you post the error log?
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      1. POHow to use getPackageManager?
      1. USJack
    2. COit was compiled correctly , but I did not find the app icon
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      1. POHow to use getPackageManager?
      1. USAngelika
 

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