Failure retrieving icon in package
W/PackageManager(14947): Failure retrieving icon 0x7f020004 in package com.a.project
W/PackageManager(14947): java.lang.NullPointerException
W/PackageManager(14947):    at android.app.ActivityThread$ResourcesKey.<init>(ActivityThread.java:1138)
W/PackageManager(14947):    at android.app.ActivityThread.getTopLevelResources(ActivityThread.java:1207)
W/PackageManager(14947):    at android.app.ActivityThread.getTopLevelResources(ActivityThread.java:1266)
W/PackageManager(14947):    at android.app.ContextImpl$ApplicationPackageManager.getResourcesForApplication(ContextImpl.java:2439)
W/PackageManager(14947):    at android.app.ContextImpl$ApplicationPackageManager.getDrawable(ContextImpl.java:2332)
W/PackageManager(14947):    at android.content.pm.PackageItemInfo.loadIcon(PackageItemInfo.java:140)
W/PackageManager(14947):    at android.app.ContextImpl$ApplicationPackageManager.getApplicationIcon(ContextImpl.java:2387)
W/PackageManager(14947):    at com.motorola.filemanager.utils.IconifiedText.buildIconItem(IconifiedText.java:287)
W/PackageManager(14947):    at com.motorola.filemanager.local.DirectoryScanner.run(DirectoryScanner.java:83)

android.permission.WRITE_EXTERNAL_STORAGE

try {
    PackageManager manager = context.getPackageManager();
    return manager.getPackageInfo(context.getPackageName(), 0).versionCode;
} catch (Exception e) {
    e.printStackTrace();
}