取得Android系统全部app

PackageManager pm = ctx.getApplicationContext().getPackageManager();

appList = pm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES);

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

mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);

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

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//下面是android2.2 Launcher源代码的LauncherModel用到的代码

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

mainIntent.addCategory( Intent.CATEGORY_LAUNCHER );

final PackageManager packageManager = mContext.getPackageManager();

List<ResolveInfo> apps = null;

//获取系统全部的应用程序

//在指定的intent中获取所有可能执行的activity列表

apps = packageManager.queryIntentActivities( mainIntent, 0 );

//APP总数

int N = apps.size();

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‍ 在Activity里操作:



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

mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);



PackageManager mPackageManager = getPackageManager();

//符合上面条件的全部查出来,并且排序

List<ResolveInfo> mAllApps = mPackageManager.queryIntentActivities(mainIntent, 0);

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

#android学习笔记