34 Androidシンプルバージョン情報パッケージ
1996 ワード
package com.example.android_apk_install;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
/**
*
* @author Administrator
*
*/
public class PackageUtils {
private Context context;
private PackageManager manager;
private PackageInfo info;
public PackageUtils(Context context) {
this.context = context;
init();
}
/**
*
*/
public void init() {
manager = context.getPackageManager();
try {
info = manager.getPackageInfo(context.getPackageName(),
PackageManager.GET_ACTIVITIES);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
public int getVersionCode()
{
return info.versionCode;
}
/**
*
* @return
*/
public String getVersionName()
{
return info.versionName;
}
/**
*
* @param oldVersion
* @param newVersion
* @return
*/
public boolean isUpgrada(int oldVersion,int newVersion)
{
boolean flag = false;
flag = newVersion > oldVersion ? true : false;
return flag;
}
}
テスト
package com.example.android_apk_install;
import android.os.Bundle;
import android.app.Activity;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.view.Menu;
import android.widget.Toast;
public class MainActivity extends Activity {
PackageUtils utils;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
utils=new PackageUtils(this);
int currVersionCode=utils.getVersionCode();
boolean flag=utils.isUpgrada(currVersionCode, 2);
if (flag) {
Toast.makeText(this, " ", 1).show();
}
}
@Override
public 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;
}
}