Android 自定义progressDialog实现

先上图看下效果：

1.String.xml 文件，progressDialog是继承与Dialog，先设置一下progressDialog的风格，设置背景透明色。

<style name="CustomDialog" parent="@android:style/Theme.Dialog"> 
    <item name="android:windowFrame">@null</item> 
        <item name="android:windowIsFloating">true</item> 
        <item name="android:windowContentOverlay">@null</item> 
        <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item> 
        <item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item> 
    </style> 
       
    <style name="CustomProgressDialog" parent="@style/CustomDialog"> 
        <item name="android:windowBackground">@android:color/transparent</item> 
        <item name="android:windowNoTitle">true</item> 
    </style>

2.customprogressdialog.xml文件，定义自己的布局，由于我的需求只需要一个进度条以及一串显示的内容，所以布局比较接单

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 
  xmlns:android="http://schemas.android.com/apk/res/android" 
  android:layout_width="fill_parent" 
  android:layout_height="fill_parent" 
  android:orientation="horizontal"> 
    <ImageView 
        android:id="@+id/loadingImageView" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:background="@anim/progress_round"/> 
    <TextView 
        android:id="@+id/id_tv_loadingmsg" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:layout_gravity="center_vertical" 
        android:textSize="20dp"/> 
</LinearLayout>

3.progress_round.xml文件.这个文件为了实现转动的效果，循环显示这些图片。

<?xml version="1.0" encoding="utf-8"?> 
<animation-list 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:oneshot="false"> 
    <item android:drawable="@drawable/progress_1" android:duration="200"/> 
    <item android:drawable="@drawable/progress_2" android:duration="200"/> 
    <item android:drawable="@drawable/progress_3" android:duration="200"/> 
    <item android:drawable="@drawable/progress_4" android:duration="200"/> 
    <item android:drawable="@drawable/progress_5" android:duration="200"/> 
    <item android:drawable="@drawable/progress_6" android:duration="200"/> 
    <item android:drawable="@drawable/progress_7" android:duration="200"/> 
    <item android:drawable="@drawable/progress_8" android:duration="200"/> 
</animation-list>

4.CustomProgressDialog.java文件

package com.lxd.widgets;
 
 
import com.lxd.activity.R;
 
import android.app.Dialog;
import android.content.Context;
import android.graphics.drawable.AnimationDrawable;
import android.view.Gravity;
import android.widget.ImageView;
import android.widget.TextView;
 
 
/********************************************************************
 * [Summary]
 *       TODO 请在此处简要描述此类所实现的功能。因为这项注释主要是为了在IDE环境中生成tip帮助，务必简明扼要
 * [Remarks]
 *       TODO 请在此处详细描述类的功能、调用方法、注意事项、以及与其它类的关系.
 *******************************************************************/
 
public class CustomProgressDialog extends Dialog {
    private Context context = null;
    private static CustomProgressDialog customProgressDialog = null;
     
    public CustomProgressDialog(Context context){
        super(context);
        this.context = context;
    }
     
    public CustomProgressDialog(Context context, int theme) {
        super(context, theme);
    }
     
    public static CustomProgressDialog createDialog(Context context){
        customProgressDialog = new CustomProgressDialog(context,R.style.CustomProgressDialog);
        customProgressDialog.setContentView(R.layout.customprogressdialog);
        customProgressDialog.getWindow().getAttributes().gravity = Gravity.CENTER;
         
        return customProgressDialog;
    }
  
    public void onWindowFocusChanged(boolean hasFocus){
         
        if (customProgressDialog == null){
            return;
        }
         
        ImageView imageView = (ImageView) customProgressDialog.findViewById(R.id.loadingImageView);
        AnimationDrawable animationDrawable = (AnimationDrawable) imageView.getBackground();
        animationDrawable.start();
    }
  
    /**
     *
     * [Summary]
     *       setTitile 标题
     * @param strTitle
     * @return
     *
     */
    public CustomProgressDialog setTitile(String strTitle){
        return customProgressDialog;
    }
     
    /**
     *
     * [Summary]
     *       setMessage 提示内容
     * @param strMessage
     * @return
     *
     */
    public CustomProgressDialog setMessage(String strMessage){
        TextView tvMsg = (TextView)customProgressDialog.findViewById(R.id.id_tv_loadingmsg);
         
        if (tvMsg != null){
            tvMsg.setText(strMessage);
        }
         
        return customProgressDialog;
    }
}

5.调用

 CustomProgressDialog progressDialog = CustomProgressDialog.createDialog(this);