一个典型的从下部弹上来的Dialog

典型的看图

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import cn.tangdada.tangbang.R;

public class SimpleBottomDialog extends Dialog
{

    private Context context;

    public SimpleBottomDialog(Context context)
    {
        this(context, R.style.Theme_Dialog_From_Bottom);
        // TODO Auto-generated constructor stub
    }

    public SimpleBottomDialog(Context context, int theme)
    {
        super(context, theme);
        // TODO Auto-generated constructor stub
        this.context = context;
        init();
    }

    private void init()
    {
        this.setCanceledOnTouchOutside(true);
        this.setCancelable(true);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.dialog_simple_bottom);

        initViews();
        initValues();
    }

    private void initViews()
    {
        findViewById(R.id.btn_0).setOnClickListener(clickListener);
        findViewById(R.id.btn_1).setOnClickListener(clickListener);

    }

    private void initValues()
    {
        // 不能写在init()中
        Window window = getWindow();
        WindowManager.LayoutParams lp = window.getAttributes();
        DisplayMetrics dm = context.getResources().getDisplayMetrics();
        lp.width = dm.widthPixels;//让dialog的宽占满屏幕的宽
        lp.gravity = Gravity.BOTTOM;//出现在底部
        window.setAttributes(lp);

    }

    View.OnClickListener clickListener = new View.OnClickListener()
    {

        @Override
        public void onClick(View v)
        {
            // TODO Auto-generated method stub
            switch (v.getId())
            {
                case R.id.btn_0:
                    if (onOKClickListener != null)
                    {
                        onOKClickListener.onOKClick(v);
                    }
                    dismiss();
                    break;
                case R.id.btn_1:
                    dismiss();
                    break;

                default:
                    break;
            }
        }

    };

    private OnOKClickListener onOKClickListener;

    public interface OnOKClickListener
    {
        public void onOKClick(View v);
    }

    public void setOnOKClickListener(OnOKClickListener onOKClickListener)
    {
        this.onOKClickListener = onOKClickListener;
    }
}

布局：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_vertical"
    android:orientation="vertical"
    android:padding="@dimen/padding" >

    <Button
        android:id="@+id/btn_0"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="@dimen/margin"
        android:background="@drawable/bg_btn_white_blue_with_corner"
        android:padding="@dimen/padding"
        android:text="@string/send" />

    <Button
        android:id="@+id/btn_1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/bg_btn_white_blue_with_corner"
        android:padding="@dimen/padding"
        android:text="@string/cancel" />

</LinearLayout>

样式：

<style name="Theme_Dialog_From_Bottom" parent="@android:style/Theme.Dialog">
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowAnimationStyle">@style/dialog_animation</item>
        <item name="android:backgroundDimEnabled">true</item>
        <item name="android:windowBackground">@android:color/transparent</item>
    </style>

    <style name="dialog_animation" parent="@android:style/Animation.Dialog">
        <item name="android:windowEnterAnimation">@anim/push_bottom_in</item>
        <item name="android:windowExitAnimation">@anim/push_bottom_out</item>
    </style>

两个动画文件：

push_bottom_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="400"
        android:fromYDelta="100%p"
        android:toYDelta="0" />

    <alpha
        android:duration="400"
        android:fromAlpha="0.0"
        android:toAlpha="1.0" />

</set>

push_bottom_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="400"
        android:fromYDelta="0"
        android:toYDelta="50%p" />

    <alpha
        android:duration="400"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" />

</set>

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