Android 获取所有安装应用显示在listview上

先看效果图；



详细看代码；
[java]view plaincopypackage com.taskmanage.file;

import java.util.ArrayList;

import java.util.Collections;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import android.app.Activity;

import android.app.ProgressDialog;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.content.pm.ApplicationInfo;

import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.graphics.drawable.Drawable;

import android.net.Uri;

import android.os.Build;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.provider.Settings;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AbsListView;

import android.widget.AdapterView;

import android.widget.AbsListView.OnScrollListener;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.BaseAdapter;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.SimpleAdapter;

import android.widget.TextView;

publicclass SoftActivity extends Activity implements Runnable ,OnItemClickListener{

privatestaticfinal String SCHEME = "package";

privatestaticfinal String APP_PKG_NAME_21 = "com.android.settings.ApplicationPkgName";

privatestaticfinal String APP_PKG_NAME_22 = "pkg";

privatestaticfinal String APP_DETAILS_PACKAGE_NAME = "com.android.settings";

privatestaticfinal String APP_DETAILS_CLASS_NAME = "com.android.settings.InstalledAppDetails";

private List<Map<String, Object>> list = null;

private ListView softlist = null;

private ProgressDialog pd;

private Context mContext;

private PackageManager mPackageManager;

private List<ResolveInfo> mAllApps;

@Override

protectedvoid onCreate(Bundle savedInstanceState) {

setContentView(R.layout.software);

setTitle("文件管理器");

mContext = this;

mPackageManager = getPackageManager();

softlist = (ListView) findViewById(R.id.softlist);

pd = ProgressDialog.show(this, "请稍候..", "正在收集软件信息...", true,false);

Thread thread = new Thread(this);

thread.start();

super.onCreate(savedInstanceState);

}

/**

* 检查系统应用程序，添加到应用列表中

*/

privatevoid bindMsg(){

//应用过滤条件

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

mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);

mAllApps = mPackageManager.queryIntentActivities(mainIntent, 0);

softlist.setAdapter(new MyAdapter(mContext, mAllApps));

softlist.setOnItemClickListener(this);

//按报名排序

Collections.sort(mAllApps, new ResolveInfo.DisplayNameComparator(mPackageManager));

}

@Override

publicvoid run() {

bindMsg();

handler.sendEmptyMessage(0);

}

private Handler handler = new Handler() {

publicvoid handleMessage(Message msg) {

pd.dismiss();

}

};

class MyAdapter extends BaseAdapter{

private Context context;

private List<ResolveInfo> resInfo;

private ImageView app_icon=null;

private TextView app_tilte=null,app_des=null;

private ResolveInfo res;

private LayoutInflater infater=null;

public MyAdapter(Context context, List<ResolveInfo> resInfo) {

this.context = context;

this.resInfo = resInfo;

infater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

}

@Override

publicint getCount() {

return resInfo.size();

}

@Override

public Object getItem(int arg0) {

return arg0;

}

@Override

publiclong getItemId(int position) {

return position;

}

@Override

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

// View view = null;

ViewHolder holder = null;

if (convertView == null || convertView.getTag() == null) {

convertView = infater.inflate(R.layout.soft_row, null);

holder = new ViewHolder(convertView);

convertView.setTag(holder);

}

else{

// view = convertView ;

holder = (ViewHolder) convertView.getTag() ;

}

//获取应用程序包名，程序名称，程序图标

res = resInfo.get(position);

holder.appIcon.setImageDrawable(res.loadIcon(mPackageManager));

holder.tvAppLabel.setText(res.loadLabel(mPackageManager).toString());

holder.tvPkgName.setText(res.activityInfo.packageName+'\n'+res.activityInfo.name);

return convertView;

/*convertView = LayoutInflater.from(context).inflate(R.layout.soft_row, null);

app_icon = (ImageView)convertView.findViewById(R.id.img);

app_tilte = (TextView)convertView.findViewById(R.id.name);

app_des = (TextView)convertView.findViewById(R.id.desc);

res = resInfo.get(position);

app_icon.setImageDrawable(res.loadIcon(mPackageManager));

app_tilte.setText(res.loadLabel(mPackageManager).toString());

app_des.setText(res.activityInfo.packageName+'\n'+res.activityInfo.name);

return convertView;*/

}

}

//设定界面布局

class ViewHolder {

ImageView appIcon;

TextView tvAppLabel;

TextView tvPkgName;

public ViewHolder(View view) {

this.appIcon = (ImageView) view.findViewById(R.id.img);

this.tvAppLabel = (TextView) view.findViewById(R.id.name);

this.tvPkgName = (TextView) view.findViewById(R.id.desc);

}

}

/**

* 单击应用程序后进入系统应用管理界面

*/

@Override

publicvoid onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {

ResolveInfo res = mAllApps.get(position);

String pkg=res.activityInfo.packageName;

Intent intent = new Intent();

finalint apiLevel = Build.VERSION.SDK_INT;

if (apiLevel >= 9) {//2.2版本后

intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);

Uri uri = Uri.fromParts(SCHEME, pkg, null);

intent.setData(uri);

}else{//2.2之前

final String appPkgName = (apiLevel == 8 ? APP_PKG_NAME_22

: APP_PKG_NAME_21);

intent.setAction(Intent.ACTION_VIEW);

intent.setClassName(APP_DETAILS_PACKAGE_NAME,

APP_DETAILS_CLASS_NAME);

intent.putExtra(appPkgName, pkg);

}

startActivity(intent);

}

}

software.xml布局；

[java]view plaincopy<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical" android:layout_width="fill_parent"

android:layout_height="fill_parent">

<ListView

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:drawSelectorOnTop="false"

android:id="@+id/softlist" />

</LinearLayout>

soft_row.xml布局；

[java]view plaincopy<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

xmlns:android="http://schemas.android.com/apk/res/android"

android:id="@+id/vw1"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:orientation="horizontal">

<ImageView android:id="@+id/img"

android:layout_width="32dip"

android:layout_margin="4dip"

android:layout_height="32dip"/>

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:orientation="vertical">

<TextView android:id="@+id/name"

android:textSize="18sp"

android:textStyle="bold"

android:layout_width="fill_parent"

android:layout_height="wrap_content"/>

<TextView android:id="@+id/desc"

android:textSize="14sp"

android:layout_width="fill_parent"

android:paddingLeft="10dip"

android:layout_height="wrap_content"/>

</LinearLayout>

</LinearLayout>

最后别忘了加权限；
[html]view plaincopy<uses-permissionandroid:name="android.permission.READ_PHONE_STATE"/>

<uses-permissionandroid:name="android.permission.GET_TASKS"/>

【转】http://blog.csdn.net/yudajun/article/details/7956933