如何獲取並顯示android apk的版本號？

Question

在Xcode中我這樣做：

NSString *temp; 
temp = [@"© 2011 Robert Schoenburg "stringByAppendingString:@"Version "]; 
temp = [temp stringByAppendingString:[[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"]]; 
myLabel.text = temp; 

我怎樣才能做到同樣的事情在一個Android應用程序？

Answer 1

使用getPackageInfo方法PackageManager（可以通過任何Context的getPackageManager方法獲得）。在生成的PackageInfo中，有versionCode和versionName字段可供讀取。它們對應於AndroidManifest.xml中<manifest>標記中設置的值。

編輯：添加例如獲得自己的.apk文件的版本代碼/名稱：

PackageManager pm = context.getPackageManager(); 
try { 
    PackageInfo pi = pm.getPackageInfo(context.getPackageName(), 0); 
    Log.d("Version " + pi.versionName + "(" + pi.versionCode + ")"); 
} catch (NameNotFoundException e) { 
    // impossible here as we refer to our own package 
} 

Answer 2

 
PackageManager m = getPackageManager(); 
PackageInfo info = m.getPackageInfo("com.mypackage.name", 0); 
Log.i("Version Code",info.versionCode+"");