自定义对话框

dialog_background_style.xml

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

    <solid android:color="#33000000" />

    <corners android:radius="10dp" />

</shape>

anim_dialog.xml

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

    <rotate
        android:duration="1500"
        android:fromDegrees="0"
        android:interpolator="@android:anim/linear_interpolator"
        android:pivotX="50%"
        android:pivotY="50%"
        android:repeatCount="-1"
        android:repeatMode="restart"
        android:startOffset="-1"
        android:toDegrees="+360" />

</set>

在styles.xml中定义如下主题：

<style name="loading_dialog" 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:windowBackground">@drawable/dialog_background_style</item>
    </style>

代码实现：

package com.wangzhen.view;

import com.wangzhen.bottomwindow.R;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;

public class MyProgressDialog extends Dialog {
    private Context mContext;
    private LayoutInflater mInflater;    

    public MyProgressDialog(Context context) {
        super(context, R.style.loading_dialog);
        mContext = context;
        mInflater = LayoutInflater.from(mContext);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        View view = mInflater.inflate(R.layout.mydialog_layout, null);
        ImageView ImageView_Icon = (ImageView) view
                .findViewById(R.id.ImageView_Icon);
        // 为ImageView添加动画
        Animation animation = AnimationUtils.loadAnimation(mContext,
                R.anim.anim_dialog);
        ImageView_Icon.startAnimation(animation);        
        setContentView(view);
    }

}