android下判断一个应用app是否是系统rom集成的方法

import android.app.Activity;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Bundle;
import android.widget.TextView;

public class AppTypeActivity extends Activity {
	
	//软件类型判断软件
	//未知软件类型
	public static final int UNKNOW_APP = 0;
	//用户软件类型
	public static final int USER_APP = 1;
	//系统软件
	public static final int SYSTEM_APP = 2;
	//系统升级软件
	public static final int SYSTEM_UPDATE_APP = 4;
	//系统+升级软件
	public static final int SYSTEM_REF_APP = SYSTEM_APP | SYSTEM_UPDATE_APP;
	
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        //要判断的包名
        String pname = "com.hiapk.marketpho";
        //在text输出的文字
        StringBuffer sb = new StringBuffer();
        sb.append(pname).append(" is: ");
        
        switch (checkAppType(pname)) {
		case SYSTEM_REF_APP:
			//是系统rom集成软件
			sb.append("SYSTEM_REF_APP");
			break;
			
		case USER_APP:
			//是用户安装软件
			sb.append("USER_APP");
			break;

		default:
			//未知软件
			sb.append("UNKNOW_APP");
			break;
		}
        
        TextView tv = (TextView)findViewById(R.id.textView);
        tv.setText(sb.toString());
        
    }
    
    /**
     * 检查app是否是系统rom集成的
     * @param pname
     * @return
     */
	private int checkAppType(String pname) {
		try {
			PackageInfo pInfo = getPackageManager().getPackageInfo(pname, 0);
			// 是系统软件或者是系统软件更新
			if (isSystemApp(pInfo) || isSystemUpdateApp(pInfo)) {
				return SYSTEM_REF_APP;
			} else {
				return USER_APP;
			}

		} catch (NameNotFoundException e) {
			e.printStackTrace();
		}
		return UNKNOW_APP;
	}
	
	/**
	 * 是否是系统软件或者是系统软件的更新软件
	 * @return
	 */
	public boolean isSystemApp(PackageInfo pInfo) {
		return ((pInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0);
	}

	public boolean isSystemUpdateApp(PackageInfo pInfo) {
		return ((pInfo.applicationInfo.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0);
	}

	public boolean isUserApp(PackageInfo pInfo) {
		return (!isSystemApp(pInfo) && !isSystemUpdateApp(pInfo));
	}
    
}

转自： http://blog.csdn.net/pilou5400/article/details/6414832