//AppInfoProvider.javapackage com.xh.ui;import java.util.ArrayList;import java.util.List;import android.content.Context;import android.content.pm.ApplicationInfo;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.graphics.drawable.Drawable;/** * 類名稱：AppInfoProvider  * 類描述：獲取應用程序的相關信息 * 創建人：LXH  */public class AppInfoProvider { private PackageManager packageManager; //獲取一個包管理器 public AppInfoProvider(Context context){ packageManager = context.getPackageManager(); } /** *獲取系統中所有應用信息， *并將應用軟件信息保存到list列表中。 **/  public List<AppInfo> getAllApps(){ List<AppInfo> list = new ArrayList<AppInfo>(); AppInfo myAppInfo;  //獲取到所有安裝了的應用程序的信息，包括那些卸載了的，但沒有清除數據的應用程序  List<PackageInfo> packageInfos = packageManager.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES); for(PackageInfo info:packageInfos){  myAppInfo = new AppInfo();  //拿到包名  String packageName = info.packageName;  //拿到應用程序的信息   ApplicationInfo appInfo = info.applicationInfo;  //拿到應用程序的圖標  Drawable icon = appInfo.loadIcon(packageManager);  //拿到應用程序的大小  //long codesize = packageStats.codeSize;  //Log.i("info", "-->"+codesize);  //拿到應用程序的程序名  String appName = appInfo.loadLabel(packageManager).toString();  myAppInfo.setPackageName(packageName);  myAppInfo.setAppName(appName);  myAppInfo.setIcon(icon);    if(filterApp(appInfo)){  myAppInfo.setSystemApp(false);  }else{  myAppInfo.setSystemApp(true);  }  list.add(myAppInfo); } return list; } /** *判斷某一個應用程序是不是系統的應用程序， *如果是返回true，否則返回false。 */  public boolean filterApp(ApplicationInfo info){ //有些系統應用是可以更新的，如果用戶自己下載了一個系統的應用來更新了原來的，它還是系統應用，這個就是判斷這種情況的 if((info.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0){  return true; }else if((info.flags & ApplicationInfo.FLAG_SYSTEM) == 0){//判斷是不是系統應用  return true; } return false; }}

//AppInfo.javapackage com.xh.ui;import android.graphics.drawable.Drawable;/** * 類名稱：AppInfo  * 類描述：應用程序類，包括了程序相關屬性 * 創建人：LXH  */public class AppInfo { private Drawable icon; private String appName; private String packageName; private boolean isSystemApp; private long codesize; public long getCodesize() { return codesize; } public void setCodesize(long codesize) { this.codesize = codesize; } public Drawable getIcon() { return icon; } public void setIcon(Drawable icon) { this.icon = icon; } 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 boolean isSystemApp() { return isSystemApp; } public void setSystemApp(boolean isSystemApp) { this.isSystemApp = isSystemApp; }}