Question

android 判断应用是否安装

Answer 1

　　public static boolean checkApkExist(Context context, String packageName) {
if (TextUtils.isEmpty(packageName))
return false;
try {
ApplicationInfo info = context.getPackageManager()
.getApplicationInfo(packageName,
PackageManager.GET_UNINSTALLED_PACKAGES);
　　if (info == null) {
return false;
} else {
return true;
}
} catch (NameNotFoundException e) {
return false;
}
}