项目刚好需要用到这个，查询汇总了很多资料最后终于顺利解决，也积累了不少查资料的技巧，现在把思路整理一下，希望能对想做类似功能的朋友有帮,希望结交热爱移动开发的朋友。 下面切入正题！
之前自己写代码一个很坏的习惯就是类的互相解耦之间做的很差，一堆代码都是堆在一起的，从没考虑到规划接口，工具类。
这里首先创建一个保存一个APP所有信息的类，包括名字，图标，版本号等。
//AllAppInfo类
class AllAppInfo {
private int versionCode = 0; //版本号
private String appname = "";// 程序名称
private String packagename = ""; //包名称
private Drawable appicon ;//图标
private long lastInstal;//最后一次安装时间
private ProviderInfo[] provider;//供应商
private String InstalPath;//安装路径
private int flag ; //判断是不是系统应用
public int getVersionCode() {
return versionCode;
}
public void setAppicon(PackageManager packageManager) {
// TODO Auto-generated method stub
}
public void setVersionCode(int versionCode) {
this.versionCode = versionCode;
}
public String getAppname() {
return appname;
}
public void setAppname(String appname) {
this.appname = appname;
}
public String getPackagename() {
return packagename;
}
public void setPackagename(String packagename) {
this.packagename = packagename;
}
public Drawable getAppicon() {
return appicon;
}
public void setAppicon(Drawable appicon) {
this.appicon = appicon;
}
/**
* @return the lastInstal
*/
public long getLastInstal() {
return lastInstal;
}
/**
* @param firstInstallTime the lastInstal to set
*/
public void setLastInstal(long firstInstallTime) {
this.lastInstal = firstInstallTime;
}
/**
* @return the provider
*/
public ProviderInfo[] getProvider() {
return provider;
}
/**
* @param providers the provider to set
*/
public void setProvider(ProviderInfo[] providers) {
this.provider = providers;
}
/**
* @return the instalPath
*/
public String getInstalPath() {
return InstalPath;
}
/**
* @param instalPath the instalPath to set
*/
public void setInstalPath(String instalPath) {
InstalPath = instalPath;
}
public void setFlags(int flag)
{
this.flag = flag ;
}
public int getFlags()
{
return this.flag ;
}
}
写之前这个类看似写了很多多余的东西，但是程序的健壮性大大增加，将来需要深入开发这个APP列表的话一个setter加一个getter直接搞定，代码逻辑一目了然。继续。
这里继续创建一个Get函数，返回一个集合保存所有需要查询的内容
//Get函数
private ArrayList<AllAppInfo> Get(){
ArrayList<AllAppInfo> appList = new ArrayList<AllAppInfo>();
List<PackageInfo> packageInfos=getPackageManager().getInstalledPackages(0);
for (int i = 0; i < packageInfos.size(); i++) {
PackageInfo pInfo=packageInfos.get(i);
AllAppInfo allAppInfo=new AllAppInfo();
allAppInfo.setAppname(pInfo.applicationInfo.loadLabel(getPackageManager()).toString());//应用程序的名称
allAppInfo.setPackagename(pInfo.packageName);//应用程序的包
allAppInfo.setVersionCode(pInfo.versionCode);//版本号
allAppInfo.setFlags(pInfo.applicationInfo.flags); //uid号
allAppInfo.setLastInstal(pInfo.firstInstallTime);
//allAppInfo.setProvider(pInfo.providers);
allAppInfo.setAppicon( pInfo.applicationInfo.loadIcon(getPackageManager()) );
allAppInfo.setInstalPath(pInfo.applicationInfo.sourceDir);
appList.add(allAppInfo);
}
return appList;
}
以上两步做完之后整个模块基本就成了，剩下的就是配置一下界面适配器。
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ProviderInfo;
import android.content.pm.ResolveInfo;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.widget.Adapter;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.SimpleAdapter.ViewBinder;
public class AboutMore extends Activity {
private ListView listview ;
private List<Map<String, Object>> listitem ;
private String[] systemApp = {"设置","录音机","时钟"} ;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.aboutmore_layout);
listitem = new ArrayList<Map<String,Object>>();
// Get();
ArrayList<AllAppInfo> list=this.Get();
for (Iterator<AllAppInfo> iterator = list.iterator(); iterator.hasNext();)
{
AllAppInfo allAppInfo = (AllAppInfo) iterator.next();
System.out.println(allAppInfo.getAppname()+" |"+allAppInfo.getPackagename()+"| "+allAppInfo.getVersionCode()+"|"+allAppInfo.getLastInstal()+"|"+allAppInfo.getInstalPath());
if((allAppInfo.getFlags() & ApplicationInfo.FLAG_SYSTEM)>0) //如果判定为系统应用
{
int flag = 0 ;
for(int i = 0 ;i<systemApp.length ;i++)
{
if( systemApp[i].equals(allAppInfo.getAppname()) )
{
flag = 1 ;
}
}
if(flag == 0)
continue ;
}
// System.out.println(allAppInfo.getAppname()+" |"+allAppInfo.getPackagename()+"| "+allAppInfo.getVersionCode()+"|"+allAppInfo.getLastInstal()+"|"+allAppInfo.getInstalPath());
Map<String, Object> showitem = new HashMap<String, Object>();
showitem.put("logo",allAppInfo.getAppicon() );
showitem.put("appName",allAppInfo.getAppname());
showitem.put("packagename",allAppInfo.getPackagename() ) ;
listitem.add(showitem);
}
SimpleAdapter myAdapter = new SimpleAdapter(getApplicationContext(), listitem, R.layout.aboutmore_item_layout, new String[]{"logo","appName"}, new int[]{R.id.logo,R.id.app_name});
myAdapter.setViewBinder(new ViewBinder()
{
public boolean setViewValue(View view,Object data,String textRepresentation)
{
if(view instanceof ImageView && data instanceof Drawable)
{
ImageView iv=(ImageView)view;
iv.setImageDrawable((Drawable)data);
return true;
}
else return false;
}
} );
listview = (ListView) findViewById(R.id.listview) ; //实例化listview
listview.setAdapter(myAdapter); //为listview添加适配器
//下面开始添加列表的事件监听
listview.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
String packagename = listitem.get(position).get("packagename").toString() ;
doStartApplicationWithPackageName(packagename);
}
});
}
}
这里在上面代码的最后调用了一个方法，通过程序的包开启调用，以下的代码转自一篇博客。博客地址http://blog.csdn.net/mad1989/article/details/38090513，写的很棒。
*
* 通过包的名字调用其他程序
* 来自：http://blog.csdn.net/mad1989/article/details/38090513
*/
private void doStartApplicationWithPackageName(String packagename) {
// 通过包名获取此APP详细信息，包括Activities、services、versioncode、name等等
PackageInfo packageinfo = null;
try {
packageinfo = getPackageManager().getPackageInfo(packagename, 0);
} catch (NameNotFoundException e) {
e.printStackTrace();
}
if (packageinfo == null) {
return;
}
// 创建一个类别为CATEGORY_LAUNCHER的该包名的Intent
Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
resolveIntent.setPackage(packageinfo.packageName);
// 通过getPackageManager()的queryIntentActivities方法遍历
List<ResolveInfo> resolveinfoList = getPackageManager()
.queryIntentActivities(resolveIntent, 0);
ResolveInfo resolveinfo = resolveinfoList.iterator().next();
if (resolveinfo != null) {
// packagename = 参数packname
String packageName = resolveinfo.activityInfo.packageName;
// 这个就是我们要找的该APP的LAUNCHER的Activity[组织形式：packagename.mainActivityname]
String className = resolveinfo.activityInfo.name;
// LAUNCHER Intent
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
// 设置ComponentName参数1:packagename参数2:MainActivity路径
ComponentName cn = new ComponentName(packageName, className);
intent.setComponent(cn);
startActivity(intent);
}
最后晒上一张效果图。 PS:自己在获取APP图标的代码上花费了很多时间，现在特别说明一下。如下这样完成AllAppInfo类的setAppicon方法就可以顺利在需要的时候取出来用了
allAppInfo.setAppicon( pInfo.applicationInfo.loadIcon(getPackageManager()) ); //通过getPackageManager
时间： 2024-12-29 02:31:41