package com.liunan.myfirstapp.util;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
/**
* Created by 劉楠 on 2016-03-22.
*/
public class PackageUtils {

/**
* 獲取版本名稱
* @param context 上下文
* @return 版本名稱
*/
public static String getVersionName(Context context){
//獲取包管理器
PackageManager pm = context.getPackageManager();
//獲取包信息
try {
PackageInfo packageInfo = pm.getPackageInfo(context.getPackageName(),0);
//返回版本號(hào)
return packageInfo.versionName;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return null;
} /**
* 獲取版本號(hào)
* @param context 上下文
* @return 版本號(hào)
*/
public static int getVersionCode(Context context){
//獲取包管理器
PackageManager pm = context.getPackageManager();
//獲取包信息
try {
PackageInfo packageInfo = pm.getPackageInfo(context.getPackageName(),0);
//返回版本號(hào)
return packageInfo.versionCode;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return 0;
}
/**
* 獲取App的名稱
* @param context 上下文
* @return 名稱
*/
public static String getAppName(Context context){
PackageManager pm = context.getPackageManager();
//獲取包信息
try {
PackageInfo packageInfo = pm.getPackageInfo(context.getPackageName(),0);
//獲取應(yīng)用 信息
ApplicationInfo applicationInfo = packageInfo.applicationInfo;
//獲取albelRes
int labelRes = applicationInfo.labelRes;
//返回App的名稱
return context.getResources().getString(labelRes);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return null;
}
}

//版本名
public static String getVersionName(Context context) {
return getPackageInfo(context).versionName;
}
//版本號(hào)
public static int getVersionCode(Context context) {
return getPackageInfo(context).versionCode;
}
private static PackageInfo getPackageInfo(Context context) {
PackageInfo pi = null;
try {
PackageManager pm = context.getPackageManager();
pi = pm.getPackageInfo(context.getPackageName(),
PackageManager.GET_CONFIGURATIONS);
return pi;
} catch (Exception e) {
e.printStackTrace();
}
return pi;
}