Android 自定义progressDialog实现

我们在项目中经常会遇到这样一个应用场景：执行某个耗时操作时,为了安抚用户等待的烦躁心情我们一般会使用进度条之类的空间,在android中让大家最 容易想到的就是progressbar或者progressDialog，区别在于前者是一个控件，后者是对话框。由于一些需求在弹出进度条时不希望用户 能够操作其他控件，所以只能使用progressDialog，这个时候有遇到了一个问题，我不想要progressDialog的黑色框框，感觉这样跟 应用的整体风格不协调，这个时候就考虑了写一个自定义的progressDialog。

         在网上搜过很多自定义progressDialog的例子，对着写了下，但是没有任何效果，不知道是自己使用的方法不对还是什么地方出错了。通过不断的查找资料，写了一个简单的自定义progressDialog。先上图看下效果：

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>  

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>  

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>  

CustomProgressDialog.java文件，这个是就是我们最终需要使用的progressDialog了

/*************************************************************************************** [Project]*       MyProgressDialog* [Package]*       com.lxd.widgets* [FileName]*       CustomProgressDialog.java* [Copyright]*       Copyright 2012 LXD All Rights Reserved.* [History]*       Version          Date              Author                        Record*--------------------------------------------------------------------------------------*       1.0.0           2012-4-27         lxd ([e-mail])        Create**************************************************************************************/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;    }}

接下来就是写一个测试activity调用我们的progressDialog了

package com.lxd.activity;import com.lxd.widgets.CustomProgressDialog;import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.view.Window;import android.view.WindowManager;public class MainFrame extends Activity {private MainFrameTask mMainFrameTask = null;private CustomProgressDialog progressDialog = null;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        this.requestWindowFeature(Window.FEATURE_NO_TITLE);        this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,        WindowManager.LayoutParams.FLAG_FULLSCREEN);                setContentView(R.layout.main);                mMainFrameTask = new MainFrameTask(this);        mMainFrameTask.execute();    }    @Overrideprotected void onDestroy() {stopProgressDialog();if (mMainFrameTask != null && !mMainFrameTask.isCancelled()){mMainFrameTask.cancel(true);}super.onDestroy();}private void startProgressDialog(){if (progressDialog == null){progressDialog = CustomProgressDialog.createDialog(this);    progressDialog.setMessage("正在加载中...");}    progressDialog.show();}private void stopProgressDialog(){if (progressDialog != null){progressDialog.dismiss();progressDialog = null;}}public class MainFrameTask extends AsyncTask<Integer, String, Integer>{private MainFrame mainFrame = null;public MainFrameTask(MainFrame mainFrame){this.mainFrame = mainFrame;}@Overrideprotected void onCancelled() {stopProgressDialog();super.onCancelled();}@Overrideprotected Integer doInBackground(Integer... params) {try {Thread.sleep(10 * 1000);} catch (InterruptedException e) {e.printStackTrace();}return null;}@Overrideprotected void onPreExecute() {startProgressDialog();}@Overrideprotected void onPostExecute(Integer result) {stopProgressDialog();}}}

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