获取手机安装程序的包列表

1.首先建立一个ListActivity:
  getPackageInfo.java

package cn.com;

import java.util.List;
import android.app.ListActivity;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;

public class getPackageInfo extends ListActivity {
	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		getInfo();
	}
	AppInstalledAdapter adapter;

	public void getInfo() {
		PackageManager pm = getPackageManager();
		final List<PackageInfo> appinstalled = pm
				.getInstalledPackages(PackageManager.GET_PERMISSIONS);
		
		adapter = new AppInstalledAdapter(this, appinstalled);
		
		setListAdapter(adapter);
		ListView lv = getListView();
		lv.setTextFilterEnabled(true);
		lv.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> parent, View view,
					int position, long id) {
				PackageInfo p = appinstalled.get(position);
				String result = null;
				String[] packagePermissions = p.requestedPermissions;
				Log.d("AppList", p.packageName);
				if (packagePermissions != null) {
					for (int j = 0; j < packagePermissions.length; j++) {
						result = result + "\n" + packagePermissions[j];
					}

				}else {
					Log.d("AppList", p.packageName + ": no permissions");
				}
				Toast.makeText(getApplicationContext(), result,
						Toast.LENGTH_LONG).show();
			}
		});
	}
}

2.然后就是适配器类:

package cn.com;

import java.util.List;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

public class AppInstalledAdapter extends BaseAdapter {
	Context mContext;
	List<PackageInfo> appinstalled;

	public AppInstalledAdapter(Context context,
			final List<PackageInfo> appinstalled) {
		mContext = context;
		this.appinstalled = appinstalled;
	}

	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return appinstalled.size();
	}

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return position;
	}

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		TextView sv;
		sv = new TextView(mContext);
		sv.setText(appinstalled.get(position).toString());

		return sv;
	}

}