Populate ListPreference with installed applications

Question

我一直在开发一个应用程序，我想选择其中一个已安装的应用程序，然后只需要将其（“应用程序”程序包）存储在ListPreference中，但似乎找不到有效的解决方案，任何帮助都将非常有用。

Answer 1

You could use PackageManager.getInstalledApplications method to get a list of installed Applications.

And use:

1. PackageManager.getApplicationLabel(ApplicationInfo) to get the Labels for ListPreference.setEntries .

2. ApplicationInfo.packageName to get the package name for ListPreference.setEntryValues .

As shown here:

PackageManager pm = getPackageManager();
List<ApplicationInfo> appList = pm.getInstalledApplications(
        PackageManager.GET_META_DATA);

int count = appList.size();
String[] appLabels = new String[count];
String[] pkgNames = new String[count];

for (int i = 0; i < count ; i++) {
    ApplicationInfo app = appList.get(i);
    appLabels[i] = pm.getApplicationLabel(app).toString();
    pkgNames[i] = app.packageName;
}

prefList.setEntries(appLabels);
prefList.setEntryValues(pkgNames);

Then you can retrieve package name for any item and use PackageManager.getApplicationInfo to get ApplicationInfo object of that package.