java

package loss.prevention;

import java.util.List;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.widget.TextView;

public class APP_Admin extends Activity{
 
 String pl;
 String pl2;
 
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
     setContentView(R.layout.app_admin);

     // PackageManager 검색
        PackageManager pm = this.getPackageManager();
       
     TextView textView1 = (TextView)findViewById(R.id.textView1);
    
        pl = "설치된 목록\n";
        // 설치된 프로그램 목록을 가져
        List <ApplicationInfo> list = pm.getInstalledApplications (0);
        for (ApplicationInfo ai : list) {
//            Toast.makeText(APP_Admin.this, "PackageManagerTest" + ai.packageName, Toast.LENGTH_SHORT).show();
            pl += ai.packageName+"\n";
        }
  textView1.setText(pl);
  
     TextView textView2 = (TextView)findViewById(R.id.textView2);
    
        // 특정 패키지가 설치되어 있는지 확인
        try {
            ApplicationInfo ai = pm.getApplicationInfo ("loss.prevention", 0);
//            Toast.makeText(APP_Admin.this, "PackageManagerTest" + "com.android.browser is found", Toast.LENGTH_SHORT).show();
            textView2.setText("loss.prevention is found");
        } catch (NameNotFoundException e) {
//            Toast.makeText(APP_Admin.this, "PackageManagerTest" + "com.android.browser is not found", Toast.LENGTH_SHORT).show();
            textView2.setText("loss.prevention is not found");
        }
        Intent intent = pm.getLaunchIntentForPackage("com.dgo.VitalPlayer");
        startActivity(intent);
 }
}
xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <ScrollView
        android:id="@+id/scrollView1"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >
        <LinearLayout
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   android:gravity="center"
      android:orientation="vertical" >
         <TextView
          android:id="@+id/textView1"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="" />
          <TextView
          android:id="@+id/textView2"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="" />
  </LinearLayout>
    </ScrollView>
</LinearLayout>