33 Android 获取版本等信息

public class MainActivity extends Activity {//获取当前已经装载在手机APK的信息private PackageManager manger;private PackageInfo info;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);manger=getPackageManager();try {info=manger.getPackageInfo(getPackageName(), PackageManager.GET_ACTIVITIES);Toast.makeText(MainActivity.this, "-->>"+info.versionCode, 1).show();} catch (Exception e) {// TODO: handle exceptione.printStackTrace();}}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}