在開發過程中  我們經常需要獲取程式名稱， 包名 版本號等相關資訊，只需要用到下面這個工具類，即可：

/跟App相關的輔助類
public class AppUtils {
 
    /**
     * 獲取應用程式名稱
     */
    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;
    }
 
    /**
     * [獲取應用程式版本名稱資訊]
     * @param context
     * @return 當前應用的版本名稱
     */
    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;
    }
 
 
    /**
     * [獲取應用程式版本名稱資訊]
     * @param context
     * @return 當前應用的版本名稱
     */
    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;
    }
 
 
    /**
     * [獲取應用程式版本名稱資訊]
     * @param context
     * @return 當前應用的版本名稱
     */
    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;
    }
 
 
    /**
     * 獲取圖示 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根據自己的情況獲取drawable
        BitmapDrawable bd = (BitmapDrawable) d;
        Bitmap bm = bd.getBitmap();
        return bm;
    }
 
}