超级简单的launcher，显示安装的所有apk

1.manifest.xml属性：

<category android:name = "android.intent,category.HOME"/>

<category android:name = "android.intent.category.DEFAULT"/>

2.

获取系统apk列表：

private void loadApps() {

Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);

mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);

mApps = getPackageManager().queryIntentActivities(mainIntent, 0);

}

adapter代码：

package com.xt.launcher;

import java.util.List;

import android.content.Context;

import android.content.pm.ResolveInfo;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.GridView;

import android.widget.ImageView;

import android.widget.TextView;

public class AppsAdapter extends BaseAdapter{

Context context; 

List mmApps;

public AppsAdapter(Context paramContext, List paramList) {

this.context = paramContext;

this.mmApps = paramList;

}

public View getView(int position, View convertView, ViewGroup parent) {

ViewHolder viewHolder ;

if (convertView == null) {

viewHolder =  new ViewHolder();

convertView = LayoutInflater.from(this.context).inflate(R.layout.grid_item, parent,false);

viewHolder.iv = ((ImageView)convertView.findViewById(R.id.image_item));

viewHolder.tv = ((TextView)convertView.findViewById(R.id.text_item));

convertView.setTag(viewHolder);

} else{

viewHolder = (ViewHolder)convertView.getTag();

}

ResolveInfo localResolveInfo = (ResolveInfo)this.mmApps.get(position);

viewHolder.iv.setImageDrawable(localResolveInfo.activityInfo.loadIcon(this.context.getPackageManager()));

viewHolder.tv.setText(localResolveInfo.loadLabel(this.context.getPackageManager()));

return convertView;

}

class ViewHolder

{

ImageView iv;

TextView tv;

ViewHolder() {}

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return this.mmApps.size();

}

@Override

public Object getItem(int position) {

// TODO Auto-generated method stub

return this.mmApps.get(position);

}

@Override

public long getItemId(int position) {

// TODO Auto-generated method stub

return position;

}

}