public class AppInfo {private String name ;//应用名称private String packageName ;//应用包名private Drawable icon ;//应用图标private long firstInstallTime ;//应用第一次安装的时间private String versionName ;//应用的版本名称public String getName() {return name;}public String getPackageName() {return packageName;}public Drawable getIcon() {return icon;}public long getFirstInstallTime() {return firstInstallTime;}public String getVersionName() {return versionName;}public AppInfo(String name, String packageName, Drawable icon, long firstInstallTime, String versionName) {this.name = name;this.packageName = packageName;this.icon = icon;this.firstInstallTime = firstInstallTime;this.versionName = versionName;}
}

public static List<AppInfo> getAppInfos(Context context){List<AppInfo> appInfoList = new ArrayList<>() ;//获取包管理器PackageManager pm = context.getPackageManager();//获取已安装的包信息List<PackageInfo> packageInfos = pm.getInstalledPackages(0);for(PackageInfo packageInfo : packageInfos){//获取包名String packageName = packageInfo.packageName;//获取应用图标Drawable icon = packageInfo.applicationInfo.loadIcon(pm);//获取应用的名称String name = packageInfo.applicationInfo.loadLabel(pm).toString();//获取第一次安装的时间long firstInstallTime = packageInfo.firstInstallTime;//获取版本号int versionCode = packageInfo.versionCode;//获取版本名称String versionName = packageInfo.versionName;AppInfo appInfo = new AppInfo(name,packageName,icon,firstInstallTime,versionName);appInfoList.add(appInfo);}return appInfoList ;}

public static void openApplication(Context context,String packageName) {Intent intent=isexit(context,packageName);if(intent==null){System.out.println("APP not found!....:"+packageName);}context.startActivity(intent);}/*** 通过packagename判断应用是否安装* @param context** @return 跳转的应用主activity Intent* */public static Intent isexit(Context context,String pk_name){//获取包管理器PackageManager packageManager = context.getPackageManager();//通过包名获取IntentIntent it= packageManager.getLaunchIntentForPackage(pk_name);return it;}

public static void showInstalledAppDetails(Context context, String packageName) {Intent intent = new Intent();final int apiLevel = Build.VERSION.SDK_INT;if (apiLevel >= 9) { // 2.3（ApiLevel 9）以上，使用SDK提供的接口
            intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);Uri uri = Uri.fromParts("package", packageName, null);intent.setData(uri);} else { // 2.3以下，使用非公开的接口（查看InstalledAppDetails源码）// 2.2和2.1中，InstalledAppDetails使用的APP_PKG_NAME不同。final String appPkgName = (apiLevel == 8 ? "pkg": "com.android.settings.ApplicationPkgName");intent.setAction(Intent.ACTION_VIEW);intent.setClassName("com.android.settings","com.android.settings.InstalledAppDetails");intent.putExtra(appPkgName, packageName);}context.startActivity(intent);}

public static void uninstallApplication(Context context,String packageName){Intent intent = new Intent() ;intent.setAction("android.intent.action.DELETE");intent.addCategory("android.intent.category.DEFAULT");intent.setData(Uri.parse("package:"+packageName));context.startActivity(intent);}