//跟App相关的辅助类
public class AppUtils {
 /**
  * 获取应用程序名称
  */
 public static synchronized String getAppName(Context context) {
  try {
   PackageManager packageManager = context.getPackageManager();
   PackageInfo packageInfo = packageManager.getPackageInfo(
     context.getPackageName(), 0);
   int labelRes = packageInfo.applicationInfo.labelRes;
   return context.getResources().getString(labelRes);
  } catch (Exception e) {
   e.printStackTrace();
  }
  return null;
 }
 /**
  * [获取应用程序版本名称信息]
  * @param context
  * @return 当前应用的版本名称
  */
 public static synchronized String getVersionName(Context context) {
  try {
   PackageManager packageManager = context.getPackageManager();
   PackageInfo packageInfo = packageManager.getPackageInfo(
     context.getPackageName(), 0);
   return packageInfo.versionName;
  } catch (Exception e) {
   e.printStackTrace();
  }
  return null;
 }
 /**
  * [获取应用程序版本名称信息]
  * @param context
  * @return 当前应用的版本名称
  */
 public static synchronized int getVersionCode(Context context) {
  try {
   PackageManager packageManager = context.getPackageManager();
   PackageInfo packageInfo = packageManager.getPackageInfo(
     context.getPackageName(), 0);
   return packageInfo.versionCode;
  } catch (Exception e) {
   e.printStackTrace();
  }
  return 0;
 }
 /**
  * [获取应用程序版本名称信息]
  * @param context
  * @return 当前应用的版本名称
  */
 public static synchronized String getPackageName(Context context) {
  try {
   PackageManager packageManager = context.getPackageManager();
   PackageInfo packageInfo = packageManager.getPackageInfo(
     context.getPackageName(), 0);
   return packageInfo.packageName;
  } catch (Exception e) {
   e.printStackTrace();
  }
  return null;
 }
 /**
  * 获取图标 bitmap
  * @param context
  */
 public static synchronized Bitmap getBitmap(Context context) {
  PackageManager packageManager = null;
  ApplicationInfo applicationInfo = null;
  try {
   packageManager = context.getApplicationContext()
     .getPackageManager();
   applicationInfo = packageManager.getApplicationInfo(
     context.getPackageName(), 0);
  } catch (PackageManager.NameNotFoundException e) {
   applicationInfo = null;
  }
  Drawable d = packageManager.getApplicationIcon(applicationInfo); //xxx根据自己的情况获取drawable
  BitmapDrawable bd = (BitmapDrawable) d;
  Bitmap bm = bd.getBitmap();
  return bm;
 }
}