<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:layout_gravity="center"

    android:orientation="vertical" >

    <Button

        android:id="@+id/btnColor"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center"

        android:text="自定义颜色列表" />

    <Button

        android:id="@+id/btnLogin"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center"

        android:text="登陆框" />

    <TextView

        android:id="@+id/textView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:text="TextView" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <ImageView

        android:id="@+id/imageView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center"

        android:src="@drawable/ic_launcher" />

    <Button

        android:id="@+id/btnClose"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center"

        android:text="关闭" />

</LinearLayout>

package com.moon.hello2;

import java.util.ArrayList;

import java.util.Calendar;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.zip.Inflater;

import android.R.anim;

import android.R.bool;

import android.R.integer;

import android.animation.AnimatorSet.Builder;

import android.app.Activity;

import android.app.AlertDialog;

import android.app.Dialog;

import android.content.DialogInterface;

import android.content.res.TypedArray;

import android.database.DataSetObserver;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.Gravity;

import android.view.Menu;

import android.view.View;

import android.view.ViewGroup;

import android.view.View.OnClickListener;

import android.view.ViewGroup.LayoutParams;

import android.view.animation.AnimationUtils;

import android.widget.AbsListView;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.AdapterView.OnItemSelectedListener;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

import android.widget.BaseAdapter;

import android.widget.Button;

import android.widget.DatePicker;

import android.widget.ExpandableListAdapter;

import android.widget.ExpandableListView;

import android.widget.LinearLayout;

import android.widget.ListView;

import android.widget.PopupWindow;

import android.widget.ProgressBar;

import android.widget.RatingBar;

import android.widget.SimpleAdapter;

import android.widget.TableLayout;

import android.widget.RatingBar.OnRatingBarChangeListener;

import android.widget.SeekBar;

import android.widget.DatePicker.OnDateChangedListener;

import android.widget.SeekBar.OnSeekBarChangeListener;

import android.widget.TabHost;

import android.widget.TextView;

import android.widget.TimePicker;

import android.widget.TimePicker.OnTimeChangedListener;

import android.widget.ViewSwitcher.ViewFactory;

public class MainActivity extends Activity {

    private final String[] colorStrings = new String[]{"红色","绿色","黄色"};

    private static final int DIALOG_SC = 1;

    private final boolean[] checkStatus = new boolean[]{true, true, false};

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        this.setContentView(R.layout.activity_main);

        LinearLayout layout = (LinearLayout)getLayoutInflater().inflate(R.layout.popup, null);

        final PopupWindow window = new PopupWindow(layout, 280, 360);

        findViewById(R.id.btnLogin).setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                window.showAsDropDown(arg0);

                window.showAtLocation(findViewById(R.id.btnLogin), Gravity.CENTER, 20, 20);

            }

        });

        Button closeButton = (Button)layout.findViewById(R.id.btnClose);

        closeButton.setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View arg0) {

                // TODO Auto-generated method stub

                window.dismiss();

            }

        });

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        getMenuInflater().inflate(R.menu.main, menu);

        return true;

    }

}