获取程序的版本名，版本名，应用名称

package functionitegretion.customfunction;

import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;

/**
* 获取程序的版本名,版本号，程序名
*
* @author TA
*
*/
public class CustomUtils {
/** 获取VersionName */
public static String getVersionName(Context context) {
try {
PackageInfo pi =
context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
return pi.versionName;
} catch (NameNotFoundException e) {
e.printStackTrace();
return context.getString(R.string.NotFindVersionName);
}
}
/**
* 获取VersionCode 版本号
*/
public static int getVersionCode(Context context) {
try {
PackageInfo pi = context.getPackageManager().getPackageInfo(
context.getPackageName(), 0);
return pi.versionCode;
} catch (NameNotFoundException e) {
e.printStackTrace();
return 0;
}
}

/**
* 获取应用程序名称
*/
public static String getApplicationName(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;
}
String applicationName = (String) packageManager
.getApplicationLabel(applicationInfo);
return applicationName;
}
}