android 如何新建activity,安卓中创建空白Activity

package com.ltsdk.union.platform;

import android.app.Activity;

import android.os.Bundle;

import com.ltsdk.union.common.DefaultCallback;

import com.skymobi.moposnsplatsdk.plugins.account.SnsAccountServerSupport;

import com.skymobi.snssdknetwork.outfunction.keeplibs.IObjectResultListener;

import com.skymobi.snssdknetwork.outfunction.keeplibs.UserParam;

/**

* LoginActivity.java: 在新的activity中调用登录逻辑

* -----

* 2016-5-10 上午10:06:45

* wangzhongyuan

*/

public class LoginActivity extends Activity

{

protected void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

//setContentView(null);

SnsAccountServerSupport.getInstance().login(this, new IObjectResultListener()

{

@Override

public void onResult(int result, Object arg1)

{

if (result == 1)

{

UserParam params = SnsAccountServerSupport.getInstance().getparam();

if (params != null)

{

LtsdkMopo.mAccountName = params.getAccountName();

LtsdkMopo.mToken = params.getToken();

LtsdkMopo.mIndex = params.getIndex();

if(LtsdkMopo.loginCallback != null) LtsdkMopo.loginCallback.onCallback(DefaultCallback.SUCCESS, "登陆成功", null);

}

else

{

if(LtsdkMopo.loginCallback != null) LtsdkMopo.loginCallback.onCallback(DefaultCallback.FAIL, "登陆失败", null);

}

}

else

{

if(LtsdkMopo.loginCallback != null) LtsdkMopo.loginCallback.onCallback(DefaultCallback.CANCEL, "登陆取消", null);

}

finish();// 关闭登录界面

}

});

}

}

在Manifest.XML中的声明：

android:name="com.ltsdk.union.platform.LoginActivity"

android:configChanges="orientation|keyboardHidden|screenSize"

android:screenOrientation="landscape"

android:theme="@android:style/Theme.Translucent.NoTitleBar.Fullscreen" />

调用空白Acitivity:

Intent intent = new Intent();

intent.setClass(getActivity(), LoginActivity.class); //调用登录activity，进行登录

getActivity().startActivity(intent); 此示例是将登录逻辑直接在一个新的背景透明的Activity中进行调用，逻辑执行完成后，退出Activity.